TWI747523B - Head mounted display - Google Patents

Abstract

A head mounted display including a first optical system, a second optical system, a first display, a second display, a first driver and a first adjusting system. The first display is assembled to an object side of the first optical system. The second display is assembled to an object side of the second optical system. The first adjusting system is connected to the first driver, the first optical system, the first display and the second display. The first driver drives the first adjusting system to adjust a distance between the first display and the second display in a first mode. The first driver drives the first adjusting system to adjust a distance between the first display and the first optical system in a second mode.

Description

Head-mounted display device

The present invention relates to a display device, and more particularly to a head-mounted display device.

With the increasing development of the technology industry, there are many types of head-mounted display devices. Take the head-mounted display devices such as eye masks as an example. After wearing such display devices, users can see in addition to stereoscopic images. It will also change with the rotation of the user's head, which can provide the user with a more immersive experience. Even, it can also be applied to the field of Mixed Reality (MR).

However, the eyesight conditions of each user are not the same, and even the degree of myopia of the left and right eyes of the same user is also different. In addition, the distance between each user's eyes is also different. In order to allow the same head-mounted display device to provide different users with the same better experience, some current head-mounted display devices have the functions of adjusting the degree of binocular myopia and adjusting the distance between the eyes. However, every time a distance adjustment function is provided, a driver must be matched, which makes it difficult to reduce the cost, volume, and weight of the head-mounted display device.

The present invention provides a head-mounted display device to solve the problems encountered when adjusting optical parameters.

The head-mounted display device of the present invention includes a first optical system, a second optical system, a first display, a second display, a first driver, and a first adjustment system. The first display is assembled to the object side of the first optical system. The second display is assembled to the object side of the second optical system. The first adjustment system is connected to the first driver, the first optical system, the first display and the second display. The first driver drives the first adjustment system to adjust the distance between the first display and the second display in a first mode. The first driver drives the first adjustment system to adjust the distance between the first display and the first optical system in a second mode.

In an embodiment of the present invention, the head-mounted display device further includes a second driver and a second adjustment system. The second adjustment system is connected to the second driver, the second optical system and the second display. The second driver drives the second adjustment system to adjust the distance between the second display and the second optical system in a third mode.

In an embodiment of the present invention, the second driver is a motor. The second adjustment system is a gear system. The second driver drives the second display to reciprocate through the second adjustment system.

In an embodiment of the present invention, the first adjustment system includes a first system and a second system. When the first driver rotates forward, the first system is driven to adjust the distance between the first display and the second display in the first mode. When the first driver is reversed, the second system is driven to adjust the distance between the first display and the first optical system in the second mode.

In an embodiment of the present invention, the first driver is a motor. The first system and the second system are respectively a gear system. The first driver drives the first display and the second display to reciprocate in the first mode through the first system, and the first driver drives the first display to reciprocate in the second mode through the second system.

In an embodiment of the present invention, the head-mounted display device further includes an inner shell. The first system includes a reciprocating gear and a driven gear. The first driver is fixed to the first display. When the first driver drives the reciprocating gear, the reciprocating gear drives the first display to reciprocate relative to the inner housing via the first driver. The first display drives the second display to reciprocate relative to the first display via the driven gear.

In an embodiment of the present invention, the first adjustment system is further connected to the second optical system. The first driver drives the first adjustment system to adjust the distance between the second display and the second optical system in a third mode.

In an embodiment of the present invention, the first adjustment system includes a switching system, a first system, a second system, and a third system. In the first mode, the switching system connects the first system and disconnects the second system and the third system. In the second mode, the switching system connects the second system and disconnects the first system and the third system. In the third mode, the switching system connects the third system and disconnects the second system from the first system.

In an embodiment of the present invention, the first driver is a motor. The switching system, the first system, the second system and the third system are respectively a gear system. The first driver drives the first display and the second display to reciprocate in the first mode through the switching system and the first system. The first driver drives the first display to reciprocate in the second mode via the second system. The first driver drives the second display to reciprocate in the third mode through the first adjustment system and the third system.

In an embodiment of the present invention, the switching system includes a shift system and a transmission system. When the first driver is reversed, the indexing system is driven so that a transmission member of the driving system is indexed to contact the first system, the second system or the third system. When the first driver rotates forward, the transmission member of the transmission system is driven to drive the first system, the second system or the third system in contact with it.

Based on the above, in the head-mounted display device of the present invention, the distance between two displays and the distance between one display and the optical system can be adjusted with only one driver. Therefore, the usage of the driver can be reduced, and the cost, volume and weight can be reduced.

FIG. 1 is a schematic diagram of a head-mounted display device according to a first embodiment of the present invention. FIG. 2 is a schematic diagram of the head-mounted display device of FIG. 1 with an outer shell and an inner shell removed. 1 and 2, the head-mounted display device 100 of this embodiment includes a first optical system 110, a second optical system 120, a first display 130, a second display 140, and a first driver 150 And a first adjustment system 160. Based on aesthetic requirements, the head-mounted display device 100 of this embodiment may further include a housing 102. Among the aforementioned components, for example, only the first optical system 110 and the second optical system 120 are partially exposed outside the housing 102, so that the user can view the first display 130 and the second display 130 through the first optical system 110 and the second optical system 120. The image displayed on the display 140. The first display 130, the second display 140, the first driver 150 and the first adjustment system 160 are all installed in the housing 102.

The first display 130 is assembled to the object side 112 of the first optical system 110. The side of the first optical system 110 opposite to the object side 112 is the image side. In other words, the image displayed by the first display 130 on the object side 112 passes through the first optical system 110 for the user to view from the image side, where the first optical system 110 is, for example, composed of one or more lenses. The second display 140 is assembled to the object side 122 of the second optical system 120. In other words, the image displayed by the second display 140 on the object side 122 passes through the second optical system 120 for the user to view from the image side, where the second optical system 120 is, for example, composed of one or more lenses. The first adjustment system 160 is connected to the first driver 150, the first optical system 110, the first display 130 and the second display 140. The first driver 150 drives the first adjustment system 160 to adjust the distance between the first display 130 and the second display 140 in a first mode. In other words, in the first mode, the first driver 150 adjusts the distance between the first display 130 and the second display 140 through the first adjustment system 160 to meet the requirements of users with different interpupillary distance (IPD). The first driver 150 drives the first adjustment system 160 to adjust the distance between the first display 130 and the first optical system 110 in a second mode. In other words, in the second mode, the first driver 150 adjusts the distance between the first optical system 110 and the first display 130 through the first adjustment system 160 to meet the needs of users with different vision conditions.

It can be seen from the above that in the head-mounted display device 100 of this embodiment, through the combination of the first driver 150 and the first adjustment system 160, not only the distance between the first display 130 and the second display 140 can be adjusted, but also the distance between the first display 130 and the second display 140 can be adjusted. The distance between the first display 130 and the first optical system 110 is adjusted. Compared with the conventional technology that uses one driver to adjust only one distance, the head-mounted display device 100 of this embodiment can save the number of drivers used, thereby reducing cost, volume, and weight.

3A and 3B are schematic diagrams of the head-mounted display device of FIG. 1 after the outer shell is removed, and FIG. 3C is a schematic diagram of the inner shell of FIG. 3A being changed to show solid lines and shield the lower components. 2 and 3A, the head-mounted display device 100 (marked in FIG. 1) of this embodiment further includes an inner shell 104 covering the first display 130, the second display 140, the first driver 150, and the first adjustment System 160. The inner shell 104 has an inner gear hole 104A. The first adjustment system 160 of this embodiment includes, for example, a first system 160A and a second system 160B. The first driver 150 is, for example, a motor. The first system 160A and the second system 160B are, for example, a gear system respectively, that is, each is composed of one or more gears. The first system 160A includes, for example, a reciprocating gear 160A1 and a driven gear 160A2. The first driver 150 is, for example, fixed to the first display 130, that is, the first driver 150 moves with the first display 130. For example, the first driver 150 drives the reciprocating gear 160A1 when rotating forward. For example, the reciprocating gear 160A1 is a ratchet. Only when the first driver 150 rotates forward, the reciprocating gear 160A1 will transmit the rotation to its output end which is in contact with the inner gear hole 104A of the inner casing 104.

Fig. 3C is a schematic diagram showing the inner shell in Fig. 3A with a solid line and shielding the components below. 3A and 3C, due to the cooperation of the output end of the reciprocating gear 160A1 with the inner gear hole 104A of the inner housing 104, the reciprocating gear 160A1 will reciprocate relative to the inner housing 104 when rotating. When the reciprocating gear 160A1 reciprocates relative to the inner shell 104, it also drives the first driver 150 and the first display 130 to reciprocate on the X axis relative to the inner shell 104 at the same time. Therefore, the relative position of the first display 130 and the inner casing 104 will change between the two states shown in FIG. 3A and FIG. 3B.

In addition, when the first display 130 reciprocates relative to the inner housing 104, a rack 132 of the first display 130 drives the driven gear 160A2 of the first system 160A to rotate. When the driven gear 160A2 rotates, it will drive a rack 142 of the second display 140 to reciprocate on the X axis relative to the inner housing 104, and then drive the entire second display 140 to reciprocate on the X axis relative to the inner housing 104. For example, in the state of FIG. 3A, the first driver 150 drives the reciprocating gear 160A1 to rotate, and the cooperation of the reciprocating gear 160A1 and the inner gear hole 104A causes the first display 130 to move in the middle of the X axis relative to the inner housing 104. At the same time, the rack 132 of the first display 130 will drive the driven gear 160A2 to rotate clockwise, and the driven gear 160A2 will drive the rack 142 to move to the right on the X axis, thereby driving the second display 140 on the X axis relative to the inner housing 104 Move up to the middle. Eventually, it transitions from the state of FIG. 3A to the state of FIG. 3B.

In this way, the first driver 150 can adjust the distance between the first display 130 and the second display 140 when rotating forward. In this embodiment, the rack 142 is fixed on a housing 144 of the second display 140, and the rack 132 is fixed on a housing 138 of the first display 130. Because the housing 138 of the first display 130 is fixed to the first optical system 110, and the housing 144 of the second display 140 is fixed to the second optical system 120, the two will drive the first optical system 110 and the second optical system 120 to X The on-axis movement allows the head-mounted display device 100 to meet the needs of users with different interpupillary distances (IPD).

4 is a schematic diagram of FIG. 3A after removing the inner shell of the head-mounted display device and the outer shell of the display. 4, when the first driver 150 is reversed, the second system 160B is driven to adjust the distance on the Y axis between the first display 130 and the first optical system 110 in the second mode. For example, the second system 160B is a ratchet. When only the first driver 150 reverses, the second system 160B transmits the rotation. The forward rotation and the reverse rotation described here are only used to distinguish the two rotations in opposite directions, but it does not limit which direction of rotation is forward rotation or reverse rotation. When the rotation of the first driver 150 is indeed transmitted to the output end of the second system 160B (not shown, for example, a protruding rod), the output end of the second system 160B performs circular motion. Since the output end of the second system 160B is inserted into a sliding groove 136 of a display element 134 of the first display 130, the output end of the second system 160B performing circular motion will drive the display element 134 to be perpendicular to the sliding groove 136. Reciprocating movement on the Y axis in the extension direction. Specifically, the display element 134 reciprocates on the Y axis to move closer to and away from the first optical system 110. Although the housing 138 (shown in FIG. 3A) of the first display 130 is fixed to the first optical system 110, the display element 134 of the first display 130 can move relative to the housing 138 of the first display 130. Therefore, the distance between the first optical system 110 of the head-mounted display device 100 and the display element 134 can be adjusted to meet the needs of users with different vision conditions.

2 and 4, the head-mounted display device 100 of this embodiment may further include a second driver 170 and a second adjustment system 180. The second adjustment system 180 is connected to the second driver 170, the second optical system 120 and the second display 140. The second driver 170 drives the second adjustment system 180 to adjust the distance on the Y axis between the second display 140 and the second optical system 120 in a third mode. Therefore, the distance between the second optical system 120 of the head-mounted display device 100 and a display element 146 of the second display 140 can meet the requirements of users with different vision conditions. For example, the second driver 170 is a motor. The second adjustment system 180 is a gear system, that is, is composed of one or more gears. The second driver 170 and the second adjustment system 180 are fixed on the housing 144 of the second display 140. When the second driver 170 rotates, the output end (not shown, for example, a protruding rod) of the second adjustment system 180 performs a circular motion. Since the output end of the second adjustment system 180 is inserted into a chute 148 of the display element 146 of the second display 140, the output end of the second system 160B performing a circular motion will drive the display element 146 in a vertical position to the chute 148. Reciprocating movement on the Y axis in the extension direction. Specifically, the display element 146 reciprocates on the Y axis to move closer to and away from the second optical system 120.

FIG. 5 is a schematic diagram of the head-mounted display device according to the second embodiment of the present invention with the outer casing, the optical system and the inner casing removed. The head-mounted display device 200 of this embodiment is substantially the same as the head-mounted display device 100 of this embodiment in FIG. 1, and only the differences between the two are described here. In the head-mounted display device 200 of this embodiment, the first adjustment system 260 is connected to the first driver 250, the first optical system 110, the second optical system 120, the first display 130, and the second display 140. The first driver 250 drives the first adjustment system 260 to adjust the distance on the X axis between the first display 130 and the second display 140 in a first mode. In other words, in the first mode, the first driver 250 adjusts the distance between the first display 130 and the second display 140 via the first adjustment system 260 to meet the needs of users with different interpupillary distances. The first driver 250 drives the first adjustment system 260 to adjust the distance on the Y axis between the first display 130 and the first optical system 110 in a second mode. In other words, in the second mode, the first driver 250 adjusts the distance between the first optical system 110 and the first display 130 through the first adjustment system 260 to meet the needs of users with different vision conditions. The first driver 250 drives the first adjustment system 260 to adjust the distance on the Y axis between the second display 140 and the second optical system 120 in a third mode. In other words, in the third mode, the first driver 250 adjusts the distance between the second optical system 120 and the second display 140 via the first adjustment system 260 to meet the needs of users with different vision conditions.

It can be seen from the above that in the head-mounted display device 200 of this embodiment, the distance between the first display 130 and the second display 140 on the X axis can be adjusted through the combination of the first driver 250 and the first adjustment system 260 , The distance between the first display 130 and the first optical system 110 on the Y axis, and the distance between the second display 140 and the second optical system 120 on the Y axis. Compared with the conventional technology that uses one driver to adjust only one distance, the head-mounted display device 100 of this embodiment uses one driver to adjust three distances, which can save the number of drivers used, thereby reducing cost, volume, and weight.

The first adjustment system 260 of this embodiment includes a switching system 262, a first system 264, a second system 266, and a third system 268. In the first mode, the switching system 262 connects the first system 264 and disconnects the second system 266 and the third system 268. In the second mode, the switching system 262 connects the second system 266 and disconnects the first system 264 and the third system 268. In the third mode, the switching system 262 connects to the third system 268 and disconnects the first system 264 and the second system 266. In other words, because the switching system 262 is provided, the first driver 250 can adjust three distances via three sub-systems. Of course, in other embodiments, the number of sub-systems can also be increased so that the first driver 250 can adjust more kinds of distances.

The first driver 250 in this embodiment is, for example, a motor. The switching system 262, the first system 264, the second system 266, and the third system 268 are, for example, a gear system, that is, each is composed of one or more gears. Although each gear system may include multiple gears, only the actions of key gears are described here, and only the actions of gears such as transmission and steering are omitted.

FIG. 6 is a schematic diagram of the first driver and the switching system of the head-mounted display device of FIG. 5. 5 and 6, the switching system 262 includes a shift system 262A and a transmission system 262B. When the first driver 250 is reversed, for example, the shifting system 262A is driven to shift a transmission member 262B1 of the transmission system 262B to contact the first system 264, the second system 266, or the third system 268. In other words, when the first driver 250 is reversed, the transmission member 262B1 can be moved between the three positions via the shift system 262A, and the transmission member 262B1 can only contact the first system 264 and the second system at each position. 266 and one of the third system 268.

For example, the gear 262A1 of the shifting system 262A in contact with the first driver 150 is a ratchet, and the gear 262B2 of the transmission system 262B in contact with the first driver 150 is a ratchet. The first driver 150 drives the gear 274 via the gear 272, and the gear 274 is used to drive the gear 262A1 and the gear 262B2. By design, when the first driver 150 rotates in reverse, only the gear 262A1 of the transposition system 262A will transmit the rotation, and when the first driver 150 rotates in the forward direction, only the gear 262B2 of the transmission system 262B will transmit the rotation.

Fig. 7 is an elevation perspective view of a gear of the transmission system of Fig. 5. 6 and 7, the gear 262B2 is taken as an example to illustrate the action mode of the ratchet, but the specific design of the ratchet is not limited to this. In addition, the gear 262A1, the second system 160B and the reciprocating gear 160A1 of FIG. 2 can all adopt similar designs. In addition to the viewing angle of FIG. 6 that the upper side of the gear 262B2 has teeth for contacting the gear 274, the viewing angle of FIG. 7 shows that the lower side of the gear 262B2 also has teeth for contacting the transmission member 262B1.

Fig. 8 is an exploded view of the depression angle of the gear of Fig. 7. Specifically, the gear 262B2 includes an upper gear 262B21, a plurality of balls 262B22, and a lower gear 262B23. The ball 262B22 is sandwiched between the upper gear 262B21 and the lower gear 262B23.

9 and 10 are cross-sectional views of the gear of FIG. 7 in two states. 6 and 9, when the upper gear 262B21 is driven by the gear 274 and rotates counterclockwise, the ball 262B22 will be pushed to a position closer to the center, so that the upper gear 262B21 cannot drive the lower gear 262B23 by the ball 262B22. In other words, when the first driver 250 drives the gear 272 to rotate counterclockwise, it will drive the gear 274 to rotate clockwise and drive the upper gear 262B21 to rotate counterclockwise, but it cannot drive the lower gear 262B23 to rotate. 6 and 10, when the upper gear 262B21 is driven by the gear 274 to rotate clockwise, the ball 262B22 will be pushed to a position farther from the center, so that the upper gear 262B21 can drive the lower gear 262B23 by the ball 262B22. In other words, when the first driver 250 drives the gear 272 to rotate clockwise, it will drive the gear 274 to rotate counterclockwise and drive the upper gear 262B21 to rotate clockwise. At this time, the lower gear 262B23 can be driven to rotate clockwise.

The operation mode of the gear 262B2 as the ratchet can be understood from the above description. Similarly, the operation modes of the gear 262A1 as the ratchet wheel and the second system 160B and the reciprocating gear 160A1 in FIG. 2 are omitted here. Fig. 11 is a schematic diagram of Fig. 6 with part of the gears and the first driver removed. 6 and 11, when the first driver 250 reverses (here, rotates counterclockwise), the lower gear 262B23 of the gear 262B2 will not be driven. At the same time, when the first driver 250 reverses, the driven gear 262A1 of the shifting system 262A can drive the gear 262A2, which in turn drives the gear 262A3. When the gear 262A3 rotates, the position of the transmission member 262B1 of the transmission system 262B mounted on the gear 262A3 can be changed. Therefore, when the first driver 250 is reversed, the transmission member 262B1 can be moved between the three positions, and the transmission member 262B1 can only contact the first system indicated in FIG. 5 when the transmission member 262B1 is in each of the three positions. 264. One of the second system 266 and the third system 268. After the transmission member 262B1 is moved to the desired position, the transmission member 262B1 will be responsible for driving the first system 264, the second system 266, or the third system 268 that it contacts. In order to avoid being unable to contact the first system 264, the second system 266, or the third system 268 due to displacement during the driving process of the transmission member 262B1, a hook 276 may be provided. The hook 276 can prevent the gear 262A3 from rotating clockwise to fix the position of the transmission member 262B1.

Fig. 12 is a schematic diagram of a part of the gear of Fig. 6. 12, in order to determine the position of the transmission member 262B1, to confirm that the transmission member 262B1 reaches the position and can drive which of the first system 264, the second system 266, and the third system 268 indicated in FIG. 5 Three switches 280 can be provided under the gear 262A3, and the lower side of the gear 262A3 has, for example, a rib 262A31. When the gear 262A3 rotates, the rib 262A31 can switch the switch 280 it is in contact with. According to the signal sent when the switch 280 is switched, the position of the transmission member 262B1 can be determined. In this embodiment, the switch 280 is fixed to the inner shell (not shown) of the head-mounted display device 200 (marked in FIG. 5), but the invention is not limited to this. The inner shell of the head-mounted display device 200 described herein is basically the same as the inner shell 104 of FIG. 3A.

Fig. 13 is a bottom view of Fig. 5. 5 and 13, after the gear 262A1 of the shifting system 262A enables the transmission member 262B1 to contact the first system 264, the first driver 250 changes to forward rotation. In FIG. 5, the first driver 250 rotates clockwise , And the first driver 250 in FIG. 13 rotates counterclockwise. At this time, the rotation of the first driver 250 can be transmitted by the gear 262B2 and the transmission member 262B1 of the transmission system 262B to the first system 264 in contact therewith. Fig. 14 is an elevation perspective view of Fig. 11 with part of the gear removed. 13 and 14, when the first driver 250 rotates forward (counterclockwise in FIG. 14) and the driving gear 272 rotates counterclockwise, it will drive the gear 274 to rotate clockwise and the upper gear 262B21 to rotate counterclockwise. At this time, the lower gear 262B23 can be driven to rotate counterclockwise. At the same time, the lower gear 262B23 can drive the reciprocating gear 264A to rotate clockwise.

The teeth 264A1 of the reciprocating gear 264A of the first system 264 fit with the inner gear hole 144A of the housing 144 of the second display 140 (marked in FIG. 5), and the teeth 264A2 of the reciprocating gear 264A and the first display 130 (marked in FIG. 5) ) The inner gear hole 138A of the housing 138 fits. Therefore, when the reciprocating gear 264A rotates clockwise, the first display 130 and the second display 140 are driven to reciprocate on the X axis to adjust the distance between the first display 130 and the second display 140. Therefore, the housing 144 and the housing 138 can be moved closer to each other as shown in FIG. 15 from keeping a relatively long distance from each other as shown in FIG. In addition, the teeth 264A1 of the reciprocating gear 264A only contact one side of the internal gear hole 144A of the housing 144, and the teeth 264A2 of the reciprocating gear 264A only contact one side of the internal gear hole 138A of the housing 138. Therefore, after changing from the state shown in FIG. 13 to the state shown in FIG. 15, the first driver 250 can continue to rotate forward to change from the state shown in FIG. 15 to the state shown in FIG. 13 again.

FIG. 16 is a schematic diagram of the head-mounted display device of FIG. 5 after the housing of the display is removed. Fig. 17 is a schematic diagram of Fig. 16 after removing part of the components and adding the housing of the first display. 16 and 17, when the first driver 250 reverses (rotating counterclockwise in FIG. 16) and the gear 262A1 of the shifting system 262A enables the transmission member 262B1 to contact the second system 266, the first driver 250 is changed to forward rotation (clockwise rotation in Figure 16). When the first driver 250 rotates forward and the driving gear 272 rotates clockwise, it will drive the gear 274 to rotate counterclockwise and drive the upper gear 262B21 to rotate clockwise. At this time, it can drive the lower gear 262B23 (marked in FIG. 14) to rotate clockwise. At the same time, the lower gear 262B23 can drive the transmission member 262B1 to rotate counterclockwise, which in turn drives the gear 266B of the second system 266 in contact with it to rotate clockwise. When the rotation of the first driver 250 is indeed transmitted to the output terminal 266A of the second system 266, the output terminal 266A of the second system 266 will drive the display element 134 through a sliding slot 136 of the display element 134 of the first display 130 Perform reciprocating motion on the Y axis. Specifically, the display element 134 reciprocates in a direction close to and away from the first optical system 110 (as shown in FIG. 2). Although the housing 138 of the first display 130 is fixed to the first optical system 110, the display element 134 of the first display 130 can move relative to the housing 138 of the first display 130. Therefore, the distance between the first optical system 110 of the head-mounted display device 200 and the display element 134 can be adjusted to meet the requirements of users with different vision conditions.

18 is a schematic diagram of another state of the head-mounted display device of FIG. 5 after the housing of the display is removed. Please refer to FIG. 18, when the first driver 250 reverses (rotating counterclockwise in FIG. 18) and the gear 262A1 of the shifting system 262A enables the transmission member 262B1 to contact the third system 268, the first driver 250 is changed to Forward rotation (clockwise rotation in Figure 18). When the first driver 250 rotates forward and the driving gear 272 rotates clockwise, it will drive the gear 274 to rotate counterclockwise and drive the upper gear 262B21 to rotate clockwise. At this time, it can drive the lower gear 262B23 (marked in FIG. 14) to rotate clockwise. At the same time, the lower gear 262B23 can drive the transmission member 262B1 to rotate counterclockwise, which in turn drives the gear 268B of the third system 268 in contact with it to rotate clockwise. When the rotation of the first driver 250 is indeed transmitted to the output terminal 268A of the third system 268, the output terminal 268A of the third system 268 will drive the display element 146 through the sliding groove 148 of the display element 146 of the second display 140. Reciprocating movement is performed on the Y axis. Specifically, the display element 146 reciprocates in a direction close to and away from the second optical system 120 (as shown in FIG. 2). Although the housing 144 (as shown in FIG. 2) of the second display 140 is fixed to the second optical system 120, the display element 146 of the second display 140 can move relative to the housing 144 of the second display 140. Therefore, the distance between the second optical system 120 of the head-mounted display device 200 and the display element 146 can be adjusted to meet the needs of users with different vision conditions.

In summary, in the head-mounted display device of the present invention, because of the cooperation of the adjustment system and the driver, the distance between two displays and the distance between one display and the optical system can be adjusted with only one driver. Therefore, fewer drivers can be configured in the head-mounted display device. In addition, if the adjustment system is properly designed, the distance between the two displays, the distance between the first display and the first optical system, and the distance between the second display and the second optical system can be further reduced with only one driver. The number of drives.

100, 200: Head-mounted display device 102,138,144: shell 104: inner shell 104A, 138A, 144A: internal gear hole 110: The first optical system 112, 122: Object side 120: second optical system 130: The first display 132,142: rack 134,146: display components 136,148: Chute 140: second display 150, 250: first drive 160: The first adjustment system 160A, 264: first system 160B, 266: the second system 160A1, 264A: Reciprocating gear 160A2: driven gear 170: second drive 180, 260: second adjustment system 262: Switch System 262A: Transposition system 262A1, 262A2, 262A3, 262B2, 266B, 268B, 272, 274: Gear 262B: Transmission system 262B1: Transmission parts 262B21: Upper gear 262B22: Ball 262B23: Lower gear 264A1, 264A2: tooth 266A, 268A: output terminal 276: Card Hook 280: Switch 262A31: Rib

FIG. 1 is a schematic diagram of a head-mounted display device according to a first embodiment of the present invention. FIG. 2 is a schematic diagram of the head-mounted display device of FIG. 1 with an outer shell and an inner shell removed. 3A and 3B are schematic diagrams of two states of the head-mounted display device of FIG. 1 after the housing is removed. Fig. 3C is a schematic diagram showing the inner shell in Fig. 3A with a solid line and shielding the components below. 4 is a schematic diagram of FIG. 3A after removing the inner shell of the head-mounted display device and the outer shell of the display. FIG. 5 is a schematic diagram of the head-mounted display device according to the second embodiment of the present invention with the outer casing, the optical system and the inner casing removed. FIG. 6 is a schematic diagram of the first driver and the switching system of the head-mounted display device of FIG. 5. Fig. 7 is an elevation perspective view of a gear of the transmission system of Fig. 5. Fig. 8 is an exploded view of the depression angle of the gear of Fig. 7. 9 and 10 are cross-sectional views of the gear of FIG. 7 in two states. Fig. 11 is a schematic diagram of Fig. 6 with part of the gears and the first driver removed. Fig. 12 is a schematic diagram of a part of the gear of Fig. 6. Fig. 13 is a bottom view of Fig. 5. Fig. 14 is an elevation perspective view of Fig. 11 with part of the gear removed. Fig. 15 is a bottom view of Fig. 5. FIG. 16 is a schematic diagram of the head-mounted display device of FIG. 5 after the housing of the display is removed. Fig. 17 is a schematic diagram of Fig. 16 after removing part of the components and adding the housing of the first display. 18 is a schematic diagram of another state of the head-mounted display device of FIG. 5 after the housing of the display is removed.

110: The first optical system

112, 122: Object side

120: second optical system

130: The first display

132,142: rack

134: display components

136: Chute

140: second display

144: Shell

150: first drive

160: The first adjustment system

160A: First time system

160B: second system

160A1: Reciprocating gear

160A2: driven gear

170: second drive

180: Second adjustment system

Claims (10)

A head-mounted display device includes: A first optical system; A second optical system; A first display assembled to the object side of the first optical system; A second display assembled to the object side of the second optical system; A first drive; and A first adjustment system connected to the first driver, the first optical system, the first display and the second display, wherein the first driver drives the first adjustment system to adjust the first in a first mode The distance between the display and the second display, and the first driver drives the first adjustment system to adjust the distance between the first display and the first optical system in a second mode. The head-mounted display device according to claim 1, further comprising a second driver and a second adjustment system, wherein the second adjustment system is connected to the second driver, the second optical system, and the second display, and The second driver drives the second adjustment system to adjust the distance between the second display and the second optical system in a third mode. The head-mounted display device according to claim 1, wherein the second driver is a motor, the second adjustment system is a gear system, and the second driver drives the second display through the second adjustment system Reciprocating motion. The head-mounted display device according to claim 1, wherein the first adjustment system includes a first-time system and a second-time system, and when the first driver rotates forward, the first-time system is driven so that the In the second mode, the distance between the first display and the second display is adjusted, and when the first driver is inverted, the second system is driven to adjust the difference between the first display and the first optical system in the second mode. The distance between. The head-mounted display device according to claim 4, wherein the first driver is a motor, the first system and the second system are respectively a gear system, and the first driver is driven by the first system The first display and the second display are driven to reciprocate in the first mode, and the first driver drives the first display to reciprocate in the second mode through the second system. The head-mounted display device according to claim 4, further comprising an inner casing, wherein the first system includes a reciprocating gear and a driven gear, the first driver is fixed to the first display, and the first driver When the reciprocating gear is driven, the reciprocating gear drives the first display to reciprocate relative to the inner housing via the first driver, and the first display drives the second display to the first display via the driven gear Reciprocating motion. The head-mounted display device according to claim 1, wherein the first adjustment system is further connected to the second optical system, and the first driver drives the first adjustment system to adjust the second display in a third mode The distance from the second optical system. The head-mounted display device according to claim 7, wherein the first adjustment system includes a switching system, a first system, a second system, and a third system, In the first mode, the switching system connects the first system and disconnects the second system from the third system, In the second mode, the switching system connects the second system and disconnects the first system and the third system, and In the third mode, the switching system connects the third system and disconnects the second system from the first system. The head-mounted display device according to claim 8, wherein the first driver is a motor, the switching system, the first system, the second system, and the third system are respectively a gear system, and the The first driver drives the first display and the second display to reciprocate in the first mode through the switching system and the first system, and the first driver is in the second mode through the second system In the third mode, the first display is driven to reciprocate, and the first driver drives the second display to reciprocate in the third mode through the first adjustment system and the third system. The head-mounted display device according to claim 8, wherein the switching system includes a shifting system and a transmission system, and when the first driver is reversed, the shifting system is driven to shift a transmission member of the transmission system While contacting the first system, the second system, or the third system, and when the first driver rotates forward, the transmission member of the transmission system is driven to drive the first system and the second system in contact with it. The secondary system or the third system.

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