TWI869967B - Binocular with bridge locking assembly - Google Patents

Abstract

A pair of binoculars having a first barrel comprising a first eyepiece optic, a first objective optic and a first bridge portion, a second barrel comprising a second eyepiece optic, a second objective optic and a second bridge portion, angularly pivotable for adjusting an interpupillary distance (IPD) between the first eyepiece optic and the second eyepiece optic; and a locking assembly comprising: an adjustable member defining a surface movable between a first position spaced apart from the first contact surface and the second contact surface, and a second position engaged with the first contact surface and the second contact surface to prevent relative pivotable movement of the first barrel with respect to the second barrel.

Description

Binoculars with bridge locking assembly

The field of the present disclosure relates to binoculars, and in particular, the binoculars involved in the present disclosure have a pair of lens barrels and a locking mechanism thereof, and the pair of lens barrels have an adjustable interpupillary distance (IPD).

For binoculars having a pair of lens barrels (each lens barrel includes an eyepiece), in order to approach the user's eye distance, the distance between the eyepieces needs to be changed. In order to achieve this adjustment of the eye distance, the first lens barrel and the second lens barrel include one or more bridge parts that are pivotally mounted.

Although adjusting the interocular distance is helpful, it is best to maintain the interocular distance while using binoculars.

In one embodiment, a pair of binoculars is provided, comprising a first barrel having a first eyepiece optical component, a first objective optical component, and a first bridge portion, the first barrel defining a first longitudinal axis extending from the first eyepiece optical component to the first objective optical component; a second barrel having a second eyepiece optical component, a second objective optical component, and a first bridge portion. The optical component and a second bridge portion, the second barrel defines a second longitudinal axis, the second longitudinal axis is substantially parallel to the first longitudinal axis, and the second longitudinal axis extends from the second eyepiece optical component to the second objective optical component; wherein the first bridge portion and the second bridge portion are angularly pivoted around a third longitudinal axis substantially parallel to the first longitudinal axis and the second longitudinal axis The invention relates to a method for adjusting the eye distance between the first eyepiece optical element and the second eyepiece optical element; and a locking assembly, comprising a pivot member fixed to the first bridge portion; a sleeve fixed to the second bridge portion and defining a first engagement surface; and a locking member limiting the relative angular movement between the locking member, the pivot member and the first bridge portion, the locking member defining a second engagement surface and being longitudinally movable along the third longitudinal axis at least between a first position spaced from the first engagement surface and a second position engaged with the first engagement surface, so that when the first engagement surface is engaged with the second engagement surface, the first bridge portion is immobile relative to the second bridge portion.

In some embodiments, the first engagement surface comprises gear teeth, and the second engagement surface comprises gear teeth. In some embodiments, the first engagement surface and the second engagement surface comprise mating tapered surfaces.

In some embodiments, the pivot member defines a longitudinal hole therethrough, and the locking member includes a longitudinal member that can slide longitudinally within the longitudinal hole. In some embodiments, the longitudinal hole of the pivot member defines a shoulder that engages with a head of the longitudinal member to limit longitudinal movement of the longitudinal member relative to the pivot member. In some embodiments, the locking member further includes a disk that is coupled to the longitudinal member and defines a protrusion having a pair of surfaces.

In some embodiments, the pivot member is a split screw comprising a first member and a second member spaced apart from the first member, and wherein the pair of surfaces of the protrusion cooperate with the first member and the second member to limit relative angular movement between the locking member, the pivot member, and the first bridge portion.

In some embodiments, the locking member comprises a ring, and wherein the second engagement surface comprises teeth on the ring, and the first engagement surface comprises teeth on the bushing.

In some embodiments, the bushing supports an O-ring thereon, and the annular ring defines a first annular recess and a second annular recess for mating with the O-ring when the locking member is in the first position and the second position. In some embodiments, the annular ring includes an outer textured surface.

In another aspect, a pair of binoculars is provided, comprising a first barrel, comprising a first eyepiece optical component, a first objective optical component, and a first contact surface, the first barrel defining a first longitudinal axis, the first longitudinal axis extending from the first eyepiece optical component to the first objective optical component; a second barrel, comprising a second eyepiece optical component, a second objective optical component, and a second contact surface, the second barrel defining a second longitudinal axis, the second longitudinal axis substantially parallel to the first longitudinal axis, the second longitudinal axis extending from the second eyepiece optical component to the second objective optical component; wherein the first The contact surface and the second contact surface pivot angularly about a third longitudinal axis substantially parallel to the first longitudinal axis and the second longitudinal axis and capable of adjusting an eye distance between the first eyepiece optic and the second eyepiece optic; and an adjustable member defining a surface movable between a first position spaced apart from the first contact surface and the second contact surface and a second position engaged with the first contact surface and the second contact surface to prevent relative pivotal movement of the first barrel relative to the second barrel.

In some embodiments, the adjustable member is a flexible sleeve, and the locking assembly includes a first disk and a second disk, wherein when the first disk and the second disk are close, the flexible sleeve expands to the second position to contact the first contact surface and the second contact surface, and when the first disk and the second disk are spaced apart, the flexible sleeve is in a relaxed configuration spaced apart from the first contact surface and the second contact surface.

In some embodiments, the adjustable member includes a button having a pair of first bolt grooves, and the first contact surface and the second contact surface include second bolt grooves disposed on the first barrel and the second barrel, wherein the first configuration includes the first bolt grooves on the button and the second bolt grooves on the first barrel and the second barrel being spaced apart, and the second configuration includes the first bolt grooves on the button and the second bolt grooves on the first barrel and the second barrel being close together.

In some embodiments, the adjustable member includes a wedge-shaped member that is movable longitudinally, and the first contact surface and the second contact surface include angled side walls, the angled side walls are disposed on the first barrel and the second barrel, the first configuration includes the wedge-shaped member being longitudinally spaced apart from the angled side walls, and the second configuration includes the wedge-shaped member being longitudinally positioned to engage the angled side walls.

In some embodiments, the adjustable member includes an angularly rotatable member, the angularly rotatable member including a pivotable lever defining a cam surface, wherein the cam surface is spaced apart from the first contact surface and the second contact surface when the pivotable lever is in a first position, and then the cam surface is engaged with the first contact surface and the second contact surface when the pivotable lever is in a second position.

In some embodiments, the adjustable member includes a handle fixed to one of the first bridge portion and the second bridge portion, the handle defining a spiral cam surface; a body defining a body contact surface and an angled slot; and a rod and sleeve angularly disposed about the handle and located within the angled body so that the rod moves longitudinally with the body, and an end of the rod is disposed within the spiral cam so that when the rod is angularly rotated relative to the handle, the rod is longitudinally disposed, the first configuration includes the body contact surface being spaced apart from the first contact surface and the second contact surface, and the second configuration includes the body contact surface contacting the first contact surface and the second contact surface.

100: Binoculars

110: Right lens

120: Left lens

130: Eyepiece optics

140:Objective optics

160, 162, 170, 172: Bridge part

173, 174, 175: Kong

176: Threaded holes

180: Eye distance locking device

190: Focus knob

200: Open end screws

201: Shaft part

202: flange

203: Center hole

204: Concave part

206: Shoulder

207: Thread

208: First component

209: Second component

210: Positioning pin

220: lining

221: Hole

222: Noodles

223: Hole

224: External annular recess

225:Joint surface

226: Outer gear teeth

230: Screws

234:O-ring

240: Gasket

250: Locking nut

260: Sliding screw

262:Head

264: Thread end

270: Tapered nut

280: disc

281: disc protrusion

282:Threaded hole

283: External thread

284: First protruding surface

285: Second protruding surface

290: Lock knob

293: Internal thread

295: Internal gear teeth

296: First annular recess

298: Second annular recess

299: External texture surface

300: First cover plate

302: Second cover plate

400: Binoculars

410: Right lens

420: Left lens

421: External spline feature

430:Button

432: Matching external flower key

500: Binoculars

510: Right lens

520: Left lens

530: Wedge-shaped component

532: Part 1

534: Part 2

536a, 536b: Joining surface

538a, 538b: contact surface

600: Binoculars

610: Right lens

620: Left lens

630: Eyepiece optics

640:Objective optics

650: Eye distance locking assembly

660, 662, 670, 672: Bridge part

671: Disc 1

673: Screws

674: Flexible sleeve

675: Screw head

676: Hexagonal hole

677: Second Disc

680: Hole

690: Focus knob

700: Binoculars

710: Right lens

720: Left lens

730: Eyepiece optics

740:Objective optics

750: Eye distance locking assembly

760, 762, 770, 772: Bridge part

773: Subject

774: Surface

775: Channel

776: handle

778: Rod

779: End

780: Control sleeve

782:Spiral cam profile

784: Threaded end

790: Focus knob

800: Binoculars

810: Right lens

820:Left lens

830: Eyepiece optics

840:Objective optics

850: Eye distance locking assembly

851: Rod

852: Resale of the hub

853: Cam profile

860, 862, 870, 872: Bridge part

890: Focus knob

900: Binoculars

910: Right lens

920: Left lens

930: Eyepiece optics

940:Objective optics

950: Eye distance locking assembly

960, 962, 970, 972: Bridge part

974: lining

976: Inner cone

980: Locking knob

982: Outer cone

984: Screws

986: Internal thread

1000: Binoculars

1110: Right lens

1120: Left lens

1130: Eyepiece optics

1140:Objective optics

1160, 1162, 1170, 1172: Bridge part

1173, 1174, 1175: Kong

1176: Threaded holes

1190: Focus knob

1200: shaft components

1201: Shaft part

1202: flange

1203: Center hole

1204: Kong

1205: External surface

1207: Thread end

1210: Positioning pin

1220: lining

1221: Kong

1221a, 1221b: lining components

1223: Hole

1225:Pad

1226: Rod part

1227: Radial hole

1228:Joint part

1229:Joint surface

1230: Screws

1260: Sliding screw

1262:Head

1264: Thread end

1270: Nut

1280: Coil spring

1281: End

1282: Second end

1290: Cap

1302: External texture or knurling

1304: External surface

1308: Inner surface

1310: Protrusion

1312a, 1312b, 1312c, 1312d: concave portion

1314a, 1314b, 1314c, 1314d: Restricted surface

1316a, 1316b, 1316c, 1316d: inclined cam surface

1318a, 1318b, 1318c, 1318d: Flat part

1320a, 1320b, 1320c, 1320d: Shoulders

B: Direction

D1: First eye distance

D2: Second eye distance

D3: Eye distance

D6, D7: Distance

E: Eyepiece end

L: longitudinal axis

O:Object end

R, S: Direction

RI, RO: arrow

The disclosed aspects will be described below in conjunction with the drawings, which are used to illustrate rather than limit the disclosed aspects, wherein similar symbols represent similar elements.

FIG. 1 is an isometric view of a pair of binoculars according to one exemplary embodiment of the disclosed subject matter.

FIG. 2 is an end view of the eyepiece of the binoculars shown in FIG. 1 in a first configuration, showing a first interocular distance.

FIG. 3 is an end view of the eyepieces of the binoculars shown in FIG. 1 in a second configuration, showing a second interocular distance.

Figure 4 is an isometric view of the binoculars shown in Figure 1 with the binoculars partially separated.

Figure 5 is a partially separated isometric view of the binoculars shown in Figure 1 as viewed from the eyepiece side.

Figure 6 is a partially separated isometric view of the binoculars shown in Figure 1 viewed from the objective side.

Figure 7 is a partially separated isometric view of the binoculars shown in Figure 1 viewed from the objective side.

Figure 8A is a partially separated isometric view of the binoculars shown in Figure 1 as viewed from the eyepiece side.

Figure 8B is a partially separated isometric view of the binoculars shown in Figure 1 as viewed from the objective side.

FIG. 9 is a longitudinal cross-sectional view taken along line 9-9 of the binoculars shown in FIG. 1, with the locking assembly in the locked configuration.

FIG. 10 is a longitudinal cross-sectional view taken along line 9-9 of the binoculars shown in FIG. 1, with the locking assembly in the unlocked configuration.

Figure 11 is an isometric view of the components of the binoculars shown in Figure 1.

Figure 12 is an isometric view of the components of the binoculars shown in Figure 1.

Figure 13 is a longitudinal cross-sectional view of the components of the binoculars shown in Figure 1.

Figure 14 is a longitudinal cross-sectional view of the components of the binoculars shown in Figure 1.

FIG. 15 is a simplified eyepiece end view of a binocular according to an exemplary embodiment of another disclosed subject matter.

FIG. 16 is a simplified top view of binoculars according to an exemplary embodiment of another disclosed subject matter.

FIG. 17 is an isometric view of binoculars according to an exemplary embodiment of another disclosed subject matter.

FIG. 18 is an enlarged view of the components of the binoculars shown in FIG. 17 in the locked configuration.

FIG. 19 is an enlarged view of the components of the binoculars shown in FIG. 17 in the unlocked configuration.

FIG. 20 is an isometric view of binoculars according to an exemplary embodiment of another disclosed subject matter.

FIG. 21 is an enlarged view of the components of the binoculars shown in FIG. 20 in the locked configuration.

Figure 22 is a longitudinal cross-sectional view of the components of the binoculars shown in Figure 20.

Figure 23 is an enlarged isometric view of the components of the binoculars shown in Figure 20.

Figure 24 is a longitudinal cross-sectional view of the components of the binoculars shown in Figure 20.

FIG. 25 is an isometric view of binoculars according to one exemplary embodiment of another disclosed subject matter.

Figure 26 is a longitudinal view of a partial cross section of the binoculars shown in Figure 25 in the locked configuration.

Figure 27 is a longitudinal view of a partial cross section of the binoculars shown in Figure 25 in the unlocked configuration.

FIG. 28 is an isometric view of binoculars according to one exemplary embodiment of another disclosed subject matter.

Figure 29 is a longitudinal section of the binoculars shown in Figure 28 in the locked position.

Figure 30 is a longitudinal cross-section of the binoculars shown in Figure 28 in the unlocked position.

FIG. 31 is an isometric view of a pair of binoculars according to another exemplary embodiment of the disclosed subject matter.

Figure 32 is a partially separated isometric view of the binoculars shown in Figure 31 as viewed from the eyepiece side.

Figure 33 is a partially separated isometric view of the binoculars shown in Figure 31 viewed from the objective side.

Figure 34 is a partially separated isometric view of the binoculars shown in Figure 31 as viewed from the eyepiece side.

FIG. 35 is a side view of selected components of the binoculars shown in FIG. 31.

FIG. 36 is an isometric view of selected components of the binoculars shown in FIG. 31 as viewed from the objective side.

FIG. 37 is an objective end view of selected components of the binoculars shown in FIG. 31 as viewed from the objective side.

Figure 38 is an enlarged isometric view of the components of the binoculars shown in Figure 31.

Figure 39 is an enlarged isometric view of the components of the binoculars shown in Figure 31 as viewed from the eyepiece side.

Figure 40 is an enlarged isometric view of the component shown in Figure 39 viewed from the eyepiece side.

The following will refer to the drawings to more fully describe various aspects of the devices and methods disclosed herein. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function presented throughout the disclosure.

As shown in FIG. 1 , binoculars 100 include a right barrel 110 and a left barrel 120, a set of eyepiece optics 130, an objective optics 140, and a focus knob 190. A longitudinal axis L extends from the eyepiece end E to the objective end O. It is desirable that the use of binoculars can adjust the interpupillary distance (IPD) between the eyepiece optics 130 to match the user's eye distance. To achieve this purpose, binoculars 100 provide a set of pivotable bridge portions 160, 162 and pivotable bridge portions 170, 172 that allow the user to adjust the distance between the left barrel 120 and the right barrel 110. As shown in FIG. 2 , the rear bridge portions 160 and 162 and the front bridge portions 170 and 172 (not shown in FIG. 2 ) are configured to provide a first interocular distance D1. In FIG. 3 , the rear bridge portions 160 and 162 and the front bridge portions 170 and 172 (not shown in FIG. 3 ) are configured to provide a second interocular distance D2. The right lens barrel 110 defines a first longitudinal axis extending from the first eyepiece optical component 130 to the first objective lens optical component 140. The left lens barrel 120 defines a second longitudinal axis substantially parallel to the first longitudinal axis, the second longitudinal axis extending from the second eyepiece optical component 130 to the second objective lens optical component 140. The bridge portions 160, 162 and the bridge portions 170, 172 are angularly pivoted about a third longitudinal axis substantially parallel to the first longitudinal axis and the second longitudinal axis and are capable of adjusting the interocular distance between the first eyepiece optical component and the second eyepiece optical component.

According to the disclosed subject matter, binoculars 100 provide an eye distance locking assembly. The eye distance locking assembly maintains the relative position of the right lens barrel 110 and the left lens barrel 120 at a desired eye distance. In addition, when there is a need to adjust the binoculars 100 to a new eye distance, the locking assembly allows the right lens barrel 110 and the left lens barrel 120 to pivot relative to each other to the new eye distance.

FIG. 4 shows partially separated components of binoculars 100. FIGs. 5-7 show specific subassemblies of the eye relief lock 180. As shown in FIG. 5, a pivot member (e.g., a split screw 200) is coupled to the left front bridge portion 170 of the left barrel 120. FIG. 11 shows the split screw 200 in more detail. The split screw 200 includes a main shaft portion 201 and a flange 202, the main shaft portion 201 having a center hole (bore) 203 extending therethrough. The shaft portion 201 extends through the aperture (aperture) 173 in the left front bridge portion 170. The flange 202 contacts the left front bridge portion 170 and stabilizes the split screw 200 relative to the left front bridge portion 170. A dowel pin 210 passes through the recess 204 in the flange 202 of the split screw 200 and through the aperture 174 in the left front bridge portion 170 to prevent the split screw 200 from rotating within the aperture 173 of the left front bridge portion 170.

As shown in FIG. 6, a sleeve 220 is coupled to the right front bridge portion 172 of the right lens barrel 110. FIG. 13 shows the sleeve 220 in more detail. The sleeve 220 is configured so that the bore 221 of the sleeve 220 is aligned with the aperture 175 in the right front bridge portion 172. One or more screws 230 pass through the hole 223 in the sleeve 220 and enter the threaded hole 176 in the right front bridge portion 172 to fix the sleeve 220 to the right front bridge portion 172. It should be understood that the sleeve 220 can be fixed to the right front bridge portion 172 by other means known in the art to which the present invention belongs (e.g., adhesive).

FIG. 7 shows an approximate view of the assembly shown in FIG. 5 and FIG. 6. Specifically, the shaft portion 201 of the split screw 200 passes through the hole 175 and the hole 221 of the right front bridge portion 172. The washer 240 is disposed on the shaft portion 201 of the split screw 200 and on the surface 222 of the bushing 220. A locking nut 250 is disposed on the washer 240 and the shaft portion 201. The locking nut 250 having an internal thread is tightened on the thread 207 of the split screw 200. When the lock nut 250 is fixed to the open screw 200, the left lens barrel 120 and the right lens barrel 110 can freely pivot around the open screw 200 to adjust the eye distance of the eyepiece optical component 130.

Figures 8A-8B show further steps in the assembly of the device. A longitudinal member (e.g., a sliding screw 260) is slidably inserted into the central hole 203 of a pivot member (e.g., a split screw 200). The movement limit of the sliding screw 260 is confirmed by the contact of its head 262 with a shoulder 206 defined in the central hole 203 of the split screw 200 (see Figures 9-10 discussed in more detail herein). The disc 280 is threadedly coupled to the locking knob 290 via an external thread 283 on the disc 280 and an internal thread 293 on the locking knob 290. FIG. 12 and FIG. 14 show the features of the disc 280 and the locking knob 290 in more detail, respectively. The locking knob 290 is a ring having additional features and an outer textured surface 299 to assist the user in adjusting the locking mechanism. The threaded end 264 of the sliding screw 260 is received in the threaded hole 282 of the disc 280. When the sliding screw 260 is coupled to the disc 280, the sliding screw 260, the disc 280 and the locking knob 290 are able to slide longitudinally together. The tapered nut 270 is disposed on the sliding screw 260 and the open screw 200 and provides additional stability to the mechanism. The disc 280 includes a disc protrusion 281 having a first protruding surface 284 and a second protruding surface 285 (see FIG. 12). The open screw 200 includes a first member 208 and a second member 209 (see FIG. 11). The size and structure of the first member 208 and the second member 209 are made to cooperate with the first protruding surface 284 and the second protruding surface 285, so that the first member 208 can slide on the first protruding surface 284 and the second member 209 can slide on the second protruding surface 285. This configuration allows the disc 280, the locking knob 290 and the sliding screw 260 to move longitudinally relative to the open screw 200, but prevents the disc 280, the locking knob 290 and the sliding screw 260 from rotationally moving relative to the open screw 200.

FIG. 9 shows binoculars 100 in a locked configuration. When locked, the left front bridge portion 170 and the right front bridge portion 172 are immovable relative to each other, thereby locking the left and right barrels 120, 110, and locking the eyepiece optics 130 to a fixed eye relief. In the locked configuration, the locking knob 290, the plate 280, and the slide screw 260 are moved to a position closest to the eyepiece. The locking knob 290 includes an engagement surface (e.g., inner gear teeth 295) that mates with an engagement surface 225 (e.g., outer gear teeth 226) on the bushing 220 (see also FIGS. 13-14). As described above, the bushing 220 is coupled to the right barrel 110 via the right front bridge portion 172. The locking knob 290 is coupled to the left barrel 120 via the interaction of the dish protrusion 281 and the open screw 200. Therefore, when the outer gear teeth 226 of the bushing 220 are coupled to the inner gear teeth 295 of the locking knob 290, the left barrel 120 and the right barrel 110 are locked. When the locking knob 290 is in the locked position, the head 262 of the sliding screw 260 is spaced apart from the shoulder 206 of the center hole 203 of the open screw 200.

The locking knob 290 interacts with an O-ring 234 disposed on the bushing 220 to reduce accidental movement of the locking knob 290. The O-ring 234 is assembled on the outer annular recess 224 of the bushing (see FIG. 13). The locking knob 290 provides two inner annular recesses, namely a first annular recess 296 and a second annular recess 298 (see FIG. 14), which cooperate with the O-ring 234. When the locking knob 290 is in the locked configuration, the O-ring 234 is received in the first annular recess 296 (see FIG. 9), which provides resistance to accidental relative movement of the locking knob 290, but the resistance can be overcome by the user. A first cover plate 300 and a second cover plate 302 can be coupled to the eye relief locking device 180 to protect its internal components.

FIG. 10 shows binoculars 100 in an unlocked configuration. When unlocked, the left front bridge portion 170 and the right front bridge portion 172 can pivot relative to each other, thereby allowing the left and right barrels 120, 110 and the eyepiece optical components 130 to adjust the eye distance. In the unlocked configuration, the locking knob 290, the plate 280 and the sliding screw 260 are moved to the position farthest from the eyepiece. The inner gear teeth 295 of the locking knob 290 are spaced apart from the outer gear teeth 226 on the bushing 220. When the outer gear teeth 226 of the bushing 220 are spaced apart from the inner gear teeth 295 of the locking knob 290, the left barrel 120 and the right barrel 110 can pivot freely. When the locking knob 290 is in the unlocked configuration, the O-ring 234 is removed from the first annular recess 296 and is received in the second annular recess 298 (see FIG. 10 ).

An exemplary embodiment of binoculars 400 is shown in FIG. 15. Binoculars 400 are substantially the same as binoculars 100 described above, but with the differences described herein. Binoculars 400 include a pair of bridge elements (not shown) that can adjust the eye relief distance D3 between left and right barrels 420, 410 (see FIGS. 2-3). Binoculars 400 include an adjustable member, such as button 430. A first contact surface (e.g., external spline feature 421) is formed on the right lens barrel 410, and a second contact surface (e.g., external spline feature 421) is formed on the left lens barrel 420, and when the button 430 with the mating external spline 432 is fully pressed into the splines of the two binocular barrels (i.e., the two external spline features 421) along direction B, it fixes the right lens barrel 410 and the left lens barrel 420 together. In some embodiments, the button 430 is mounted to a housing to allow the button 430 to move toward and away from the mating external spline 432. This causes the right lens barrel 410 and the left lens barrel 420 to be locked together. FIG. 15 shows binoculars 400 in a locked position. In some embodiments, a biasing member such as a spring may be provided to bias button 430 into a position engaging mating external spline 432.

An exemplary embodiment of binoculars 500 is shown in FIG. 16. Binoculars 500 are substantially the same as binoculars 100 described above, but with the differences described herein. Binoculars 500 include a pair of bridge elements (not shown) that can adjust the eye relief distance between left barrel 520 and right barrel 510. Binoculars 500 include an adjustable member, such as a wedge member 530, that translates axially (parallel to longitudinal axis L) between right barrel 510 and left barrel 520. The wedge member includes a first portion 532 having a first size and a second portion 534 having a second size, wherein the first size is greater than the second size. The wedge-shaped member 530 also includes a pair of engagement surfaces 536a and 536b, which are configured to slidably engage a pair of contact surfaces 538a and 538b on the right lens barrel 510 and the left lens barrel 520, respectively. In use, the user can adjust the binoculars to the desired eye distance (see Figures 2-3), and then slide the wedge-shaped member 530 axially until the engagement surfaces 536a and 536b engage with the contact surfaces 538a and 538b on the right lens barrel 510 and the left lens barrel 520. When the engagement surfaces 536a and 536b engage with the contact surfaces 538a and 538b, the right lens barrel 510 and the left lens barrel 520 will stop at the desired eye distance when the user rotates the lens barrels inward.

An exemplary embodiment of binoculars 600 is shown in FIGS. 17-19. Binoculars 600 are substantially the same as binoculars 100 described above, but with the differences described herein. Binoculars 600 include a right barrel 610 and a left barrel 620, a set of eyepiece optics 630, objective optics 640, and a focus knob 690. In order to adjust the eye distance between the eyepiece optical parts 630 to match the eye distance of the user, the binoculars 600 provide a set of bridge portions 660, 662 and bridge portions 670, 672, which allow the user to adjust the distance between the left barrel 620 and the right barrel 610. According to the disclosed subject matter, the binoculars 600 provide an eye distance locking assembly 650. As shown in FIG. 17, the eye distance locking assembly 650 is accommodated in a hole 680 formed by the bridge portions 660, 662. A portion of the wall of the hole 680 includes the bridge portion 660 defining a first contact surface, and a portion of the wall of the hole 680 includes the bridge portion 662 defining a second contact surface. The eye spacing lock assembly 650 includes a first disc 671 and a second disc 677 placed on a screw 673, wherein the screw 673 has a screw head 675. The first disc 671 includes a threaded hole that is screwed through the threads of the screw 673. An adjustable member (e.g., a flexible sleeve 674) is mounted on the screw 673 and located between the first disc 671 and the second disc 677. As shown in FIG. 19, when the flexible sleeve 674 is in a first position, a distance D7 is defined between the first disc 671 and the second disc 677. When the screw head 675 is rotated, the first disc 671 is retained to prevent longitudinal movement within the hole 680. Therefore, the distance D7 (FIG. 19) between the first disc 671 and the second disc 677 is reduced to the distance D6 (FIG. 18). As the distance between the first disc 671 and the second disc 677 is reduced, the flexible sleeve 674 is compressed and expanded to a wider diameter and engages the first and second contact surfaces (e.g., the walls of the hole 680), including the bridge portions 660, 662, to fix the relative positions of the right barrel 610 and the left barrel 620. FIG. 18 and FIG. 19 show a hexagonal hole 676 that can be adjusted by an appropriate tool. In some embodiments, an adjustment knob (not shown) is provided to allow the user to manually rotate the screw head 675.

An exemplary embodiment of binoculars 700 is shown in FIGS. 20-24. Binoculars 700 are substantially the same as binoculars 100 described above, but with the differences described herein. Binoculars 700 include a right barrel 710 and a left barrel 720, a set of eyepiece optics 730, objective optics 740, and a focus knob 790. In order to adjust the eye distance between the eyepiece optical components 730 to match the user's eye distance, the binoculars 700 provide a set of bridge portions 760, 762 and bridge portions 770, 772, which allow the user to adjust the distance between the left lens barrel 720 and the right lens barrel 710. According to the disclosed subject matter, the binoculars 700 provide an eye distance locking assembly 750. As shown in Figures 21-22, the eye distance locking assembly 750 includes a handle 776, a main body 773, a control sleeve 780 and a rod 778. When the rod 778 is rotated (see direction R of Figure 21), it forces the main body 773 to abut against the first and second contact surfaces of the bridge portions 760, 762 to maintain the eye distance in a proper position. As shown in FIG. 22 , the rod 778 is coupled to the control sleeve 780. The control sleeve 780 is assembled around the handle 776. The rod 778 includes an end 779 that is placed within the spiral cam profile 782 of the handle 776. As shown in FIG. 23 , the spiral cam profile 782 of the handle 776 extends spirally around the handle. The rod 778 is constrained to move in an angular direction R (see FIG. 21 ) within the channel 775 of the body 773. When the rod 778 is angularly rotated (direction R), the spiral cam profile 782 carries the rod axially (parallel to the longitudinal axis L). Because the channel 775 constrains the body 773 from axial movement relative to the rod 778, the body 773 and the rod 778 move axially together. When the body 773 is moved axially toward the first and second contact surfaces of the bridge portions 760, 762, the surface 774 engages the bridge portions 760, 762 to maintain the eye distance in the proper position (FIG. 24). The handle 776 includes a threaded end 784 for attaching the handle 776 to the binoculars 700.

An exemplary embodiment of binoculars 800 is shown in FIGS. 25-27. Binoculars 800 are substantially the same as binoculars 100 described above, but with the differences described herein. Binoculars 800 include a right barrel 810 and a left barrel 820, a set of eyepiece optics 830, objective optics 840, and a focus knob 890. In order to adjust the eye distance between the eyepiece optics 830 to match the eye distance of the user, binoculars 800 provide a set of bridge portions 860, 862 and bridge portions 870, 872 that allow the user to adjust the distance between the left barrel 820 and the right barrel 810. According to the disclosed subject matter, binoculars 800 provide an eye distance locking assembly 850. As shown in FIGS. 26-27, eye distance locking assembly 850 includes an adjustable member, such as a rod 851, a pivot pin 852, and a cam profile 853. Rod 851 can pivot about pivot pin 852 in a direction S (see FIGS. 26-27). When rod 851 is in a first position (see FIG. 27), cam profile 853 is spaced apart from the first and second contact surfaces of bridge portions 860, 862, allowing right lens barrel 810 and left lens barrel 820 to freely pivot to allow adjustment of eye distance. When the rod 851 rotates around the pivot pin 852 to the second position (Fig. 26), the cam profile 853 is set against the contact surfaces of the two bridge parts 860, 862, thereby maintaining the eye distance in the proper position.

An exemplary embodiment of binoculars 900 is shown in FIGS. 28-30. Binoculars 900 are substantially the same as binoculars 100 described above, but with the differences described herein. Binoculars 900 include a right barrel 910 and a left barrel 920, a set of eyepiece optics 930, and an objective lens optics 940. In order to adjust the eye distance between the eyepiece optics 930 to match the eye distance of the user, binoculars 900 provide a set of bridge portions 960, 962 and bridge portions 970, 972 that allow the user to adjust the distance between the left barrel 920 and the right barrel 910. According to the disclosed subject matter, binoculars 900 provide an eye-distance lock assembly 950. As shown in FIGS. 29-30, eye-distance lock assembly 950 includes a screw 984 fixed to the left front bridge portion 970. Bushing 974 is fixed to the right front bridge portion 972 (e.g., using screws). Bushing 974 includes an inner cone 976. Locking knob 980 has inner threads 986 and can be threadedly moved together with the threads on screw 984. Locking knob 980 further includes an outer cone 982. FIG. 29 shows a locked configuration in which the inner cone 976 of the bushing 974 is frictionally engaged with the outer cone 982 of the locking knob 980, thereby locking the right barrel 910 and the left barrel 920. FIG. 30 shows an unlocked configuration in which the inner cone 976 of the bushing 974 is spaced apart from the outer cone 982 of the locking knob 980, thereby allowing free movement between the right barrel 910 and the left barrel 920.

An exemplary embodiment of binoculars 1000 is shown in FIGS. 31-40. Binoculars 1000 are substantially the same as binoculars 100 described above, but with the differences described herein. Binoculars 1000 include a right barrel 1110 and a left barrel 1120, a set of eyepiece optics 1130, objective optics 1140, and a focus knob 1190. A longitudinal axis L extends from the eyepiece end E to the objective end O. Binoculars 1000 provide a set of pivotable bridge portions 1160, 1162 and pivotable bridge portions 1170, 1172 that allow a user to adjust the distance between left barrel 1120 and right barrel 1110. Right barrel 1110 defines a first longitudinal axis extending from first eyepiece optics 1130 to first objective optics 1140. Left barrel 1120 defines a second longitudinal axis substantially parallel to the first longitudinal axis, extending from second eyepiece optics 1130 to second objective optics 1140. The bridge portions 1160, 1162 and the bridge portions 1170, 1172 are angularly pivoted about a third longitudinal axis substantially parallel to the first longitudinal axis and the second longitudinal axis, and are capable of adjusting an eye distance between the first eyepiece optical component and the second eyepiece optical component.

According to the disclosed subject matter, binoculars 1000 provide an eye distance locking assembly. The eye distance locking assembly maintains the relative position of the right lens barrel 1110 and the left lens barrel 1120 at a desired eye distance. In addition, when there is a need to adjust the binoculars 1000 to a new eye distance, the locking assembly allows the right lens barrel 1110 and the left lens barrel 1120 to pivot relative to each other to the new eye distance.

Figures 32-34 illustrate elements of binoculars 1000, partially separated. As shown in Figure 32, a pivot member (e.g., shaft member 1200) is coupled to the left front bridge portion 1170 of the left barrel 1120. The shaft member 1200 includes a main shaft portion 1201 and a flange 1202, and the main shaft portion 1201 has a central hole 1203 extending therethrough. The shaft portion 1201 includes a rough outer surface 1205 and a threaded end 1207. In some embodiments, the rough outer surface 1205 is a series of raised ridges, surface details or notches, or applied sandy material. The shaft portion 1201 extends through an aperture 1173 in the left front bridge portion 1170. The flange 1202 contacts the left front bridge portion 1170 and stabilizes the shaft member 1200 relative to the left front bridge portion 1170. A positioning pin 1210 passes through the hole 1204 in the flange 1202 of the shaft member 1200 and through the aperture 1174 in the left front bridge portion 1170 to prevent the shaft member 1200 from rotating within the aperture 1173 of the left front bridge portion 1170.

As shown in FIG. 33 , a sleeve 1220 is coupled to the right front bridge portion 1172 of the right barrel 1110. FIGS. 36-37 show the sleeve 1220 in more detail. The sleeve 1220 is configured so that the hole 1221 of the sleeve 1220 is aligned with the aperture 1175 in the right front bridge portion 1172. One or more screws 1230 pass through the hole 1223 in the sleeve 1220 and enter the threaded hole 1176 in the right front bridge portion 1172 to secure the sleeve 1220 to the right front bridge portion 1172. It should be understood that the sleeve 1220 can be fixed to the right front bridge portion 1172 by other means known in the art to which the present invention belongs (e.g., adhesive).

FIG. 34 shows a combination of the elements shown in FIGS. 32-33. Specifically, the shaft portion 1201 of the shaft member 1200 passes through the hole 1175 of the right front bridge portion 1172 and the hole 1221 of the bushing 1220. The nut 1270 is fixed to the threaded end 1207 of the shaft member 1200 through threads. The left lens barrel 1120 and the right lens barrel 1110 can freely pivot around the shaft member 1200 to adjust the eye distance of the eyepiece optical member 1130.

Continuing with reference to FIG. 34, a longitudinal member (e.g., a sliding screw 1260) is slidably inserted into a central hole 1203 of a pivot member (e.g., a shaft member 1200). The longitudinal movement limitation of the sliding screw 1260 is confirmed by the contact of its head 1262 with a shoulder (not shown) defined in the central hole 1203 of the shaft member 1200 (see also FIGS. 9-10, which more specifically depict similarly configured sliding screws 260 and split screws 200). A biasing member (e.g., a coil spring 1280) is disposed around a nut 1270, and one end 1281 of the nut 1270 contacts the bushing 1220. The cap 1290 is threadably coupled to the complementary threaded end 1264 of the slide screw 1260. When the slide screw 1260 is coupled to the cap 1290, the slide screw 1260 can slide longitudinally with the cap 1290. The coil spring 1280 includes a second end 1282 that contacts the inner surface 1308 of the cap 1290, thereby biasing the cap 1290 away from the bushing 1220.

FIGS. 35-37 show further details of the eye relief locking mechanism of binoculars 1000. FIG. 35 shows shaft member 1200, sleeve 1220, and cap 1290. For the purpose of illustration, bridge portions 1170 and 1172 are not shown. In FIG. 36, cap 1290 is removed for the purpose of illustration. In some embodiments, sleeve 1220 includes two sleeve elements 1221a, 1221b. Pad 1225 can slide radially within a radial hole 1227 (shown in phantom in FIG. 37) in sleeve 1220. Bushing elements 1221a, 1221b and gasket 1225 are fixed together as an assembly to bridge portion 1172 via screws 1230, as shown in FIG. 33. As shown in FIG. 35, nut 1270 is fixed to threaded end 1207 of shaft portion 1201.

FIG. 37 shows an end view of the sleeve 1220 and the pad 1225, with the nut 1270 removed for illustration purposes. The pad 1225 can slide radially (in a radially outward direction as indicated by arrow RO and in a radially inward direction as indicated by arrow RI) within the sleeve 1220. When the pad 1225 is pushed radially inward as indicated by arrow RI, the pad 1225 frictionally engages the shaft member 1200 to prevent the bridge portion 1170 from rotating relative to the bridge portion 1172, thereby locking the binoculars 1000 at eye relief. As shown in FIG. 38 , each pad 1225 includes a cylindrical rod portion 1226 and a coupling portion 1228 having an arcuate coupling surface 1229. The rod portion 1226 can slide in the radial hole 1227 of the bushing 1220. The coupling surface 1229 has an arcuate curvature to conform to the outer surface 1205 of the shaft portion 1201. In some embodiments, the pad 1225 including the rod portion 1226 and the coupling portion 1228 is made of metal (e.g., steel). The arcuate coupling surface 1229 is coated with a softer material (e.g., a rubber or polymer coating) to grip the outer surface 1205 of the shaft portion 1201 of the shaft member 1200.

The cap 1290 is shown in more detail in FIGS. 39-40 . The cap 1290 is secured to the threaded end 1264 of the slide screw 1260. The cap 1290 includes an exterior texture or knurling 1302 to improve a user's grip on the cap 1290. A projection 1310 extends longitudinally outward from an interior surface 1308 of the cap 1290 and includes a threaded bore that receives the threaded end 1264 of the slide screw 1260. The second end 1282 of the coil spring 1280 engages the interior surface 1308 of the cap 1290 and biases the cap 1290 away from the bushing 1220. The outer surface 1304 of the cap 1290 includes a plurality of recesses 1312a, 1312b, 1312c, 1312d for accommodating the rod portion 1226 of the pad 1225.

Each recess 1312a, 1312b, 1312c, 1312d extends into a limiting surface 1314a, 1314b, 1314c, 1314d, which limits longitudinal movement of the cap 1290 toward the sleeve 1220. The recesses 1312a, 1312b, 1312c, 1312d extend to angled inclined cam surfaces 1316a, 1316b, 1316c, 1316d. At the end of the angle range of the inclined cam surfaces 1316a, 1316b, 1316c, 1316d are flat portions 1318a, 1318b, 1318c, 1318d. Shoulders 1320a, 1320b, 1320c, 1320d are disposed adjacent to flat portions 1318a, 1318b, 1318c, 1318d. FIG. 39 shows elements 1314a, 1316a, 1318a, and 1320a corresponding to recess 1312a. It should be understood that the elements corresponding to recesses 1312b, 1312c, and 1312d are identical, although not shown in FIG. 39.

To lock the binoculars 1000 using the eye relief locking mechanism, the cap 1290 moves in the direction of the eyepiece end E and approaches the sleeve 1220 against the bias of the coil spring 1280. In some embodiments, the cap 1290 is made of metal (e.g., steel). When the cap 1290 moves toward the sleeve 1220, the rod portion 1226 of each pad 1225 is received in the corresponding recess 1312a, 1312b, 1312c, 1312d of the cap 1290 until the pad 1225 engages the limiting surface 1314a, 1314b, 1314d. At this point, the user rotates the cap 1290 so that each rod portion 1226 is pushed radially inward (arrow RI in FIG. 40 ) by the corresponding inclined cam surface 1316a, 1316b, 1316c, 1316d. Upon further rotation, each rod portion 1226 is received in the corresponding flat portion 1318a, 1318b, 1318c, 1318d. In this configuration, the arcuate engagement surface 1229 of the pad 1225 is firmly frictionally engaged with the outer surface 1205 of the shaft portion 1201, so that the pad 1225 is immobile relative to the shaft member 1200, thereby placing the binoculars 1000 in a locked configuration. When locked, the left front bridge portion 1170 and the right front bridge portion 1172 are immovable relative to each other, thereby locking the left and right barrels 1120, 1110 and the eyepiece optics 1130 to a fixed eye relief.

In the unlocked configuration, the left front bridge portion 1170 and the right front bridge portion 1172 can pivot relative to each other, thereby allowing the left and right barrels 1120, 1110 and the eyepiece optics 1130 to adjust the eye relief. To unlock the binoculars 1000, the locking process described herein is essentially reversed. The cap 1290 is rotated in the opposite direction, causing the rod portion 1226 of the pad 1225 to move from the corresponding flat portion 1318a, 1318b, 1318c, 1318d to the corresponding inclined cam surface 1316a, 1316b, 1316c, 1316d. As a result, the rod portion 1226 moves radially outward (arrow RO in FIG. 40 ), thereby releasing the arcuate engagement surface 1229 from engagement with the outer surface 1205 of the shaft portion 1201. As the cap 1290 rotates, an additional, optional force is applied to the pads 1225 to move them radially outward (as indicated by arrow RO). In some embodiments, a coil spring is disposed around the rod portion 1226 to bias the pads 1225 radially outward as the cap 1290 rotates. In some embodiments, one or more magnetic attractors are applied to the cap 1290 and/or the pad 1225 to move the pad 1225 radially outward when the cap 1290 is rotated. In some embodiments, the recesses 1312a, 1312b, 1312c, 1312d and the inclined cam surfaces 1316a, 1316b, 1316c, 1316d are mechanically connected to move the pad 1225 radially outward when the cap 1290 is rotated, for example, by providing an increased diameter on the rod portion 1226 within the cap.

In an exemplary embodiment, a pair of binoculars is provided, including a first barrel having a first eyepiece optical component, a first objective optical component, and a first bridge portion, the first barrel defining a first longitudinal axis extending from the first eyepiece optical component to the first objective optical component; a second barrel having a second eyepiece optical component, a second objective optical component, and a second bridge portion, the second barrel defining a second longitudinal axis extending from the first eyepiece optical component to the first objective optical component. The invention relates to a method for manufacturing a 3D optical microscope having a plurality of eyepieces and a plurality of objective lens optics. The method comprises: providing a first eyepiece optic having a plurality of eyepieces and a plurality of objective lens optics; a second eyepiece optic having a plurality of eyepieces and a plurality of objective lens optics; a second eyepiece optic having a plurality of eyepieces and a plurality of objective lens optics; a second eyepiece optic having a plurality of eyepieces and a plurality of objective lens optics; a second eyepiece optic having a plurality of eyepieces and a plurality of objective lens optics; a second eyepiece optic having a plurality of eyepieces and a plurality of objective lens optics; a second eyepiece optic having a plurality of eyepieces and a plurality of objective lens optics; a second eyepiece optic having a plurality of eyepieces and a plurality of objective lens optics; a first ... The locking assembly includes a pivot member fixedly connected to the first bridge portion; a sleeve fixedly connected to the second bridge portion and including one or more movable pads, each movable pad defining an engagement surface for contacting the pivot member; and a rotatable cap defining an inclined cam surface for engaging one or more pads. When the cap rotates in a first direction, the inclined cam surface pushes one or more pads to frictionally engage with the pivot member, so that the first bridge portion is immobile relative to the second bridge portion, and when the cap rotates in a second direction, the inner inclined cam surface can separate one or more pads from the pivot member, so that the first bridge portion can move relative to the second bridge portion.

This section describes specific embodiments and their detailed construction and operation with reference to the drawings. The embodiments described herein are described by way of illustration only and not limitation. The features, structures, characteristics, and methods of operation described may be combined in any suitable manner in one or more embodiments. In view of the disclosure herein, a person of ordinary skill in the art to which the invention pertains will recognize that various embodiments may be practiced without one or more of the specific details or with other methods, components, materials, etc. In other cases, well-known structures, materials, or methods of operation are not shown or described in detail to avoid obscuring more relevant aspects of the embodiments.

100: Binoculars

110: Right lens

120: Left lens

130: Eyepiece optics

140:Objective optics

160, 162, 170, 172: Bridge part

190: Focus knob

E: Eyepiece end

L: longitudinal axis

O:Object end

Claims (16)

A pair of binoculars, comprising: a first lens barrel, comprising a first eyepiece optical component, a first objective lens optical component and a first bridge portion, the first lens barrel defining a first longitudinal axis, the first longitudinal axis extending from the first eyepiece optical component to the first objective lens optical component; A second lens barrel, comprising a second eyepiece optical component, a second objective lens optical component and a second bridge portion, the second lens barrel defining a second longitudinal axis, the second longitudinal axis substantially parallel to the first longitudinal axis, the second longitudinal axis extending from the second eyepiece optical component to the second objective lens optical component; wherein the first bridge portion and the second bridge portion pivot at an angle around a third longitudinal axis substantially parallel to the first longitudinal axis and the second longitudinal axis, and are capable of adjusting an interpupillary distance (IPD) between the first eyepiece optical component and the second eyepiece optical component; and a locking assembly, comprising: a pivot member fixed to the first bridge portion; a bushing fixedly connected to the second bridge portion and defining a first engagement surface; and a locking member limiting the relative angular movement between the locking member, the pivot member and the first bridge portion, the locking member defining a second engagement surface and being longitudinally movable along the third longitudinal axis at least between a first position spaced apart from the first engagement surface and a second position engaged with the first engagement surface, so that when the first engagement surface is engaged with the second engagement surface, the first bridge portion is immobile relative to the second bridge portion. A binocular as described in claim 1, wherein the first engaging surface includes gear teeth and the second engaging surface includes gear teeth. A binoculars as described in claim 1, wherein the first bonding surface and the second bonding surface comprise mating tapered surfaces. A binoculars as described in claim 1, wherein the pivot member defines a longitudinal hole passing therethrough, and the locking member includes a longitudinal member that can slide longitudinally in the longitudinal hole. A binocular as described in claim 4, wherein the longitudinal hole of the pivot member defines a shoulder that engages with a head of the longitudinal member to limit the longitudinal movement of the longitudinal member relative to the pivot member. A binoculars as described in claim 5, wherein the locking member further includes a disk coupled to the longitudinal member and defining a protrusion having a pair of surfaces. A binocular telescope as described in claim 6, wherein the pivot member is a split screw, the split screw includes a first member and a second member spaced apart from the first member, and wherein the pair of surfaces of the protrusion cooperate with the first member and the second member to limit the relative angular movement between the locking member, the pivot member and the first bridge portion. A binocular as described in claim 5, wherein the locking member comprises a ring, and wherein the second engagement surface comprises teeth on the ring, and wherein the first engagement surface comprises teeth on the bushing. A binoculars as described in claim 8, wherein the bushing supports an O-ring thereon, and the annular ring defines a first annular recess and a second annular recess for mating with the O-ring when the locking member is in the first position and the second position. A binocular as described in claim 8, wherein the ring includes an outer textured surface. A pair of binoculars, comprising: a first lens barrel, comprising a first eyepiece optical component, a first objective optical component and a first contact surface, the first lens barrel defining a first longitudinal axis, the first longitudinal axis extending from the first eyepiece optical component to the first objective optical component; A second lens barrel, comprising a second eyepiece optical component, a second objective lens optical component and a second contact surface, the second lens barrel defining a second longitudinal axis, the second longitudinal axis substantially parallel to the first longitudinal axis, the second longitudinal axis extending from the second eyepiece optical component to the second objective lens optical component; wherein the first contact surface and the second contact surface pivot at an angle around a third longitudinal axis substantially parallel to the first longitudinal axis and the second longitudinal axis, and are capable of adjusting an interpupillary distance (IPD) between the first eyepiece optical component and the second eyepiece optical component; and a locking assembly, comprising: An adjustable member defines a surface that is movable between a first position and a second position, the first position being spaced apart from the first contact surface and the second contact surface, the second position being engaged with the first contact surface and the second contact surface to prevent relative pivotal movement of the first lens barrel relative to the second lens barrel. A binocular as claimed in claim 11, wherein the adjustable member comprises a flexible sleeve, and the locking assembly further comprises a first disc and a second disc, and wherein the first contact surface is disposed on a first bridge portion of the first barrel, and the second contact surface is disposed on a second bridge portion of the second barrel, wherein when the first disc and the second disc are close, the flexible sleeve expands to the second position to contact the first contact surface and the second contact surface, and when the first disc and the second disc are spaced apart, the flexible sleeve is in a relaxed configuration spaced apart from the first contact surface and the second contact surface. A binocular telescope as described in claim 11, wherein the adjustable member includes a button having a pair of first bolt grooves, and the first contact surface and the second contact surface each include second bolt grooves respectively disposed on the first lens barrel and the second lens barrel, wherein a first configuration includes the first bolt grooves on the button and the second bolt grooves on the first lens barrel and the second lens barrel being spaced apart, and a second configuration includes the first bolt grooves on the button and the second bolt grooves on the first lens barrel and the second lens barrel being close together. A binocular as claimed in claim 11, wherein the adjustable member comprises a wedge member movable longitudinally, and the first contact surface and the second contact surface comprise angled side walls disposed on the first barrel and the second barrel, wherein a first configuration comprises the wedge member being longitudinally spaced apart from the angled side walls, and a second configuration comprises the wedge member being longitudinally positioned to engage the angled side walls. A binocular as claimed in claim 11, wherein the adjustable member comprises an angle-rotatable member, the angle-rotatable member comprises a pivotable lever defining a cam surface, and wherein the first contact surface is disposed on a first bridge portion of the first lens barrel, and the second contact surface is disposed on a second bridge portion of the second lens barrel, wherein when the pivotable lever is in a first position, the cam surface is spaced apart from the first contact surface and the second contact surface, and then when the pivotable lever is in a second position, the cam surface engages with the first contact surface and the second contact surface. A binocular as claimed in claim 11, wherein the first contact surface is disposed on a first bridge portion of the first lens barrel, the second contact surface is disposed on a second bridge portion of the second lens barrel, and wherein the adjustable member comprises: a handle fixedly connected to one of the first bridge portion and the second bridge portion, the handle defining a spiral cam surface; a body defining a body contact surface and a narrow groove disposed at an angle; and A rod and sleeve are arranged around the handle at an angle and are located in the angled body so that the rod moves longitudinally with the body, and one end of the rod is arranged in the spiral cam so that when the rod is rotated at an angle relative to the handle, the rod is arranged longitudinally, a first configuration includes the body contact surface being spaced apart from the first contact surface and the second contact surface, and a second configuration includes the body contact surface contacting the first contact surface and the second contact surface.