SU67841A1 - Wide-angle eye - Google Patents

Description

The proposed wide-angle eyepiece consists of two main two-lens components, between which a simple lens is located, which makes it possible to increase its field of view while improving the correction of aberrations.

Improvement in the work of the ocular is achieved by replacing the two-lens glued collective with the three-lens glued collective with an IB in which the first lens is negative from the heavy flint, the second lens is positive from the light crown and the third lens is positive from the heavy crown.

By replacing a simple lens in the middle of the eyepiece, located between the two main components, it is possible with a component glued together from two lenses to somewhat improve the correction of chromatic aberration.

The use of a glued three-lens collective also allows, while maintaining a sufficiently large eye field, remove from the structure an average simple lens and, by reducing the number of lens surfaces that are in contact with air, reduce the loss of light caused by reflection from these surfaces.

Approximate form of implementation

The invention is illustrated in FIG. 1-3.

The okulr (fig. 1) consists of three components. The first component is a three-lens glued collective consisting of: a negative flat-concave lens, a curved side facing the eye, and made of a heavy flint with a refractive index Pg 1.7398; from a positive meniscus covered with a concave side to the eye and made from a light crown with a refractive index of 1.516, and from a two-convex lens from a heavy crown with a refractive index of PP 1.6126.

The second component is a positive two-lens glued lens made of a heavy crown with a refractive index, 6126. The third component is a positive two-lens glued lens, consisting of a two-convex positive lens made of heavy with a refractive index of 1.6126 and a negative lens of heavy flint with a growth rate of 15 1.6475.

The ocular field of view is 83 ° 45, residual aberrations of the ocular are quite acceptable and

327

As an example, the following ocular structural elements are presented:

focal distance. . 25 MJA field of vision .... exit pupil diameter Q, mm exit pupil removal

from the last surface

the eyelid . . .16,2 mm

diaphragm diameter floor

vision .... 43.4 mm

1 ./ о 7 и 40,4

„I OR OO (il Z.I4: I

 + F, 66,. „„ I. „„

G +453 75 (

h - TtiJO,; iJ, Q co

r. 45.28 ° -

i- - 45,28 j n 07 i r, + 51,

42.2

r, -276.00 J- 9.59

r, + 26.35 J 2 r. 41 4.H 7-l-S./U

34.3

41.43

 2.06

r, .- + 62.93 26.0

The absolute values of the radii of curvature of the ocular tube exceed the value of its focal length.

The eyepiece may also consist of three components. The first component, which is a collective, is glued together from three lenses (Fig. 2), and it is zlobmenno: from a negative flat-concave lens, facing the concavity to the eye and made of a heavy flux with a refractive index Poison 1,7398; from a positive flat-junction lens, facing a flat surface to the eye and made of a crown with a refractive index of 1.5163, and, finally, of a positive flat-convex lens, facing a convexity of the eye and made of a heavy crown with a refractive index of about 1, 6126.

The second and third components of the ocular are positive two-lens glued lenses, each consisting of a positive two-convex lens made of a heavy crown with: index, 6126, and a negative double-concave lens made of a heavy flint with a refractive index Yal 1.6475.

Absolute values, the radii of curvature of the ocular are greater than 328

its focal length.

The following structural elements are given as an example:

focal distance. . 25 mm field of vision .... 80 ° 30 exit pupil diameter 5.9 mm

removal of the exit pupil from the last surface

the eye is ra13.0 mm

diaphragm diameter floor

view 38.3 mm

-4- Inq99.n, 06

39.3

-119.22

d,

2.95 - f 325.34 in d, 0.29 + 26.14

- 40:86 12,52 I 30,3

"9 Z, 2l

0.6

+ 61.86

The absolute values of the radii of curvature of the ocular tube exceed the value of its focal length.

FIG. 3 shows a third possible embodiment of the invention.

This design refers to the case when the team is combined with a medium simple lens into one three-liter 1-component component.

The three-lens component consists of: a negative meniscus, obschenchennogo concave side to the eye and made of heavy fli-nta with a refractive index, 6475; from a positive meniscus with a concavity facing the eye and made from a light crown with a refractive index of 5163, and from a two-convex lens made from a heavy crown with a refractive index of 6126.

In the eye lens of the proposed ocular, the radii of curvature of the lenses and the refractive indices of the glasses are changed, and for the kroon lens a yellow crowns with an indicator

I, 1.612b, and for the flint lease, a heavy flint with a refractive index of 1.6475. The proposed ocular p is well corrected with respect to the chromatic difference of magnifications and has a slight loss of reflection light. With respect to other residual aberrations, both oculars have approximately the same values - The greatest curvature of the radii is 0.93 /, where the focal length of the ocular is.

The following ocular structural elements are cited as an example:

focal distance. .25 mm ocular field of view. . 66 °, 40 exit pupil diameter 0.25 mm exit pupil removal from the last one

eye length 17.0 mm

diaphragm diameter. . 31.8. "Well

g, + 76.86, 7 about 651

f - L 94 k;

GU - t o, oo J 7 P7I 41 and t

 H RR - G 1, O1

Гз + й6, Ь // 7 95 g, - 45.95

G. + 23.95 d, 0.18 V / -, - 23.95, 37 28.28 g, +618.42 d, 2.21 j

The eyepieces of the proposed design, with a large field of view, can be used for many optical devices, including binocular tubes, binoculars, etc.

Subject invention

Claims (4)

1. A wide-angle eye made of two or three optical components, characterized in that its first component is made up of three interdisciptive lenses, of which the first lens is negative of heavy flint, the second is positive of light crown and the third is positive from the heavy crown. 2. Form of execution. eye pop pop 1, characterized in that the first negative lens of the first component is flat-concave, facing the concavity towards the eye, the second lens as a positive meniscus facing the concavity towards the eye, and a third positive lens of the double convex, 3. The form of execution of the oculra pop. 1, characterized in that the first lens of the first component is flat-curved, facing by concavity towards the eye, the second lens is flat-pointed and facing flat with the flat surface, and the third lens is flat (convex, with the convex side facing the eye. 4. The form of making the ocular according to claim 1, such that the first lens of the first component is made in the form of a negative meniscus facing the concavity to the eye, the second lens is in the form of a positive meniscus facing the concavity of the eye, the third lens is double convex. Fig, 1 .0 1: 3,6 of, 2.7 (fj / ff, 9fi, 59 ds3, s3 (, 27 tii13,70 0 (3-2,06, .4,2 2 fi80 ° 30 HS .. V palf cS 0 43, 7 1 (7.43 TF1, 1.739828.21 / Ce r, 5 "3MJ y rw (, 6 / 2658.31 ", 85 6.59 Wfi ff6 / 2S J8.3l 42.27 44.95 I: SI2S 58.3 36.32 34.26 f, 6475 33; 2BM 28.03 SF3, Z5 Sf t2, iB FIG 2 Full f / 7358 2S, 2 38.3 /; /, 5 / fi3 6, “/,“; DG, 6; 26 58.3 Ipzg ,, 58.3 1.6 / 26 33.9 ;, 647j 32.56 30.35, /, 6/26 58.3 22,84 20,53; 1, 33.9 , 87 Sf 9.20 a, -2,65 Tfn ci2 - ian KB dy-i.ss ruf, .K dj 12.37 TK61.8126 58.3 rf "- TF1.6" Z5 33.9 Z7 -ere.v  J 33.58 8, gv zo, b5 S - 25.0 S / --- / 4.9 S; --- M, 3J