CN114252995A - Head-mounted display device - Google Patents
Head-mounted display device Download PDFInfo
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- CN114252995A CN114252995A CN202011020969.7A CN202011020969A CN114252995A CN 114252995 A CN114252995 A CN 114252995A CN 202011020969 A CN202011020969 A CN 202011020969A CN 114252995 A CN114252995 A CN 114252995A
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- 230000003287 optical effect Effects 0.000 claims abstract description 79
- 230000005540 biological transmission Effects 0.000 claims description 30
- 238000010586 diagram Methods 0.000 description 11
- 230000004438 eyesight Effects 0.000 description 7
- 230000017105 transposition Effects 0.000 description 4
- 230000004379 myopia Effects 0.000 description 2
- 208000001491 myopia Diseases 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0176—Head mounted characterised by mechanical features
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Abstract
The invention discloses a head-mounted display device, which comprises 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 the object side of the first optical system. The second display is assembled to the object side of the second optical system. The first adjusting system is connected with the first driver, the first optical system, the first display and the second display. The first driver drives the first adjusting system to adjust the 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
Technical Field
The present invention relates to a display device, and more particularly, to a head-mounted display device.
Background
As the technology industry has been developed, the types of head-mounted display devices are quite large, for example, the eye-mask type head-mounted display devices, and after a user wears the head-mounted display devices, the user can see the stereoscopic images and the images can be changed along with the rotation of the head of the user, so that the user can feel more personally on the scene. Even, it is also applicable to the Mixed Reality (MR) field.
However, the visual conditions of each user are different, and even the degrees of myopia of the left and right eyes of the same user are different. In addition, the distance between both eyes of each user also varies. In order to provide the same and better use experience for different users with the same head-mounted display device, some current head-mounted display devices have the functions of adjusting the myopia degrees of both eyes and adjusting the distance between both eyes. However, each time a distance adjustment function is provided, a driver must be provided, which makes it difficult to reduce the cost, volume and weight of the head-mounted display device.
Disclosure of Invention
The invention provides a head-mounted display device, which is used for solving the problems encountered when optical parameters are adjusted.
The head-mounted display device of the invention comprises 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 the object side of the first optical system. The second display is assembled to the object side of the second optical system. The first adjusting system is connected with the first driver, the first optical system, the first display and the second display. The first driver drives the first adjusting system to adjust the 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.
In an embodiment of the invention, the head-mounted display device further includes a second driver and a second adjustment system. The second adjusting system is connected with the second driver, the second optical system and the second display. The second driver drives the second adjusting system to adjust the distance between the second display and the second optical system in a third mode.
In an embodiment of the 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 adjusting system.
In an embodiment of the invention, the first adjusting system includes a first subsystem and a second subsystem. The first driver is positively rotated to drive the first subsystem to adjust the distance between the first display and the second display in the first mode. The first driver drives the second subsystem when inverted to adjust a 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 subsystem and the second subsystem are gear systems respectively. The first driver drives the first display and the second display to reciprocate in a first mode through the first subsystem, and the first driver drives the first display to reciprocate in a second mode through the second subsystem.
In an embodiment of the invention, the head-mounted display device further includes an inner shell. The first subsystem includes a reciprocating gear and a driven gear. The first driver is fixed on the first display. When the first driver drives the reciprocating gear, the reciprocating gear drives the first display to reciprocate relative to the inner shell through the first driver. The first display drives the second display to reciprocate relative to the first display through the driven gear.
In an embodiment of the invention, the first adjusting system is further connected to the second optical system. The first driver drives the first adjusting 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 adjusting system includes a switching system, a first subsystem, a second subsystem and a third subsystem. In the first mode, the switching system connects the first subsystem and disconnects the second subsystem from the third subsystem. In the second mode, the switching system connects the second subsystem and disconnects the first subsystem and the third subsystem. In a third mode, the switching system connects the third secondary system and disconnects the second secondary system from the first secondary system.
In an embodiment of the present invention, the first driver is a motor. The switching system, the first subsystem, the second subsystem and the third subsystem are gear systems respectively. The first driver drives the first display and the second display to reciprocate in the first mode through the switching system and the first subsystem. The first driver drives the first display to reciprocate in the second mode via the second subsystem. The first driver drives the second display to reciprocate in a third mode through the first adjusting system and the third subsystem.
In an embodiment of the present invention, the switching system includes a transposition system and a transmission system. When the first driver rotates reversely, the transposition system is driven to enable a transmission piece of the transmission system to be transposed and contact with the first secondary system, the second secondary system or the third secondary system. When the first driver rotates forwards, the driving part of the transmission system is driven to drive the first subsystem, the second subsystem or the third subsystem which is in contact with the first driver.
In view of the above, in the head-mounted display device of the present invention, the distance between the two displays and the distance between one display and the optical system can be adjusted with only one driver. Therefore, the use amount of the driver can be reduced, and the cost, the volume and the weight are reduced.
Drawings
Fig. 1 is a schematic view of a head-mounted display device according to a first embodiment of the invention.
Fig. 2 is a schematic diagram of the head-mounted display device of fig. 1 with the outer shell and the inner shell removed.
Fig. 3A and 3B are schematic views of the head-mounted display device of fig. 1 in two states after the housing is removed.
Fig. 3C is a schematic view of the inner housing of fig. 3A shown in solid lines and shielding the lower elements.
Fig. 4 is a schematic diagram of fig. 3A with an inner case of the head-mounted display device and an outer case of the display removed.
Fig. 5 is a schematic diagram of a head-mounted display device according to a second embodiment of the invention with an outer shell, an optical system and an inner shell removed.
FIG. 6 is a diagram of a first driver and a switching system of the head mounted display device of FIG. 5.
FIG. 7 is an elevational perspective view of one gear of the transmission system of FIG. 5.
Fig. 8 is an exploded view of the depression angle of the gear of fig. 7.
Fig. 9 and 10 are cross-sectional views of the gear of fig. 7 in two states.
Fig. 11 is a schematic view of fig. 6 with a portion of the gear and the first driver removed.
Fig. 12 is a schematic view of a portion of the gear of fig. 6.
Fig. 13 is a bottom view of fig. 5.
Fig. 14 is an elevational perspective view of fig. 11 with a portion of the gears removed.
Fig. 15 is a bottom view of fig. 5.
Fig. 16 is a schematic view of the head-mounted display device in fig. 5 with a housing of a display removed.
Fig. 17 is a schematic view of fig. 16 with some elements removed and a housing of the first display attached.
Fig. 18 is a schematic view of the head-mounted display device in fig. 5 in another state after a housing of a display is removed.
Description of the symbols
100,200 head-mounted display device
102,138,144 casing
104 inner shell
104A,138A,144A internal gear hole
110 first optical system
112,122 object side
120 second optical system
130 first display
132,142 rack
134,146 display element
136,148 sliding groove
140 second display
150,250 first driver
160 first adjustment System
160A,264 first time system
160B,266 second subsystem
160A1,264A reciprocating gear
160A2 driven gear
170 second driver
180,260 second adjustment system
262 switching system
262A transposition system
262A1,262A2,262A3,262B2,266B,268B,272,274 gears
262B drive train
262B1 driving member
262B21 upper gear
262B22 balls
262B23 lower gear
264A1,264A2 tooth
266A,268A, output terminal
276 hook
280: switch
262A31 Ribs
Detailed Description
Fig. 1 is a schematic diagram of a head-mounted display device according to a first embodiment of the invention. Fig. 2 is a schematic diagram of the head-mounted display device of fig. 1 with the outer shell and the inner shell removed. Referring to fig. 1 and fig. 2, the head-mounted display device 100 of the present embodiment includes a first optical system 110, a second optical system 120, a first display 130, a second display 140, a first driver 150, and a first adjusting system 160. The head-mounted display device 100 of the present embodiment may further include a housing 102 based on aesthetic requirements. For example, only the first optical system 110 and the second optical system 120 of the aforementioned components are partially exposed outside the housing 102, so that the user can view the images displayed by the first display 130 and the second display 140 through the first optical system 110 and the second optical system 120. The first display 130, the second display 140, the first driver 150, and the first adjustment system 160 are all mounted within the housing 102.
As can be seen from the above description, in the head-mounted display device 100 of the present embodiment, through the cooperation of the first driver 150 and the first adjusting system 160, not only the distance between the first display 130 and the second display 140, but also the distance between the first display 130 and the first optical system 110 can be adjusted. Compared with the prior art that only one distance can be adjusted by using one driver, the head-mounted display device 100 of the embodiment can save the number of drivers, thereby reducing the cost, the volume and the weight.
Fig. 3A and 3B are schematic diagrams of the head-mounted display device of fig. 1 with the outer shell removed, and fig. 3C is a schematic diagram of the inner shell of fig. 3A shown in solid lines instead of shielding the lower elements. Referring to fig. 2 and fig. 3A, the head-mounted display device 100 (shown in fig. 1) of the present embodiment further includes an inner casing 104 covering the first display 130, the second display 140, the first driver 150 and the first adjustment system 160. The inner housing 104 has an internal gear aperture 104A. The first adjustment system 160 of the present embodiment includes, for example, a first subsystem 160A and a second subsystem 160B. The first driver 150 is, for example, a motor. The first subsystem 160A and the second subsystem 160B are, for example, gear systems, which are respectively composed of one or more gears. The first subsystem 160A includes, for example, a reciprocating gear 160A1 and a driven gear 160A 2. The first driver 150 is fixed to the first display 130, for example, that is, the first driver 150 moves with the first display 130. The first driver 150 drives the reciprocating gear 160a1, for example, in the forward direction. For example, the reciprocating gear 160a1 is a ratchet gear. When only the first driver 150 rotates forward, the reciprocating gear 160a1 transmits the rotation to its output end contacting the internal gear hole 104A of the inner case 104.
Fig. 3C is a schematic view of the inner housing of fig. 3A shown in solid lines and shielding the underlying components. Referring to fig. 3A and 3C, due to the matching of the output end of the reciprocating gear 160a1 and the internal gear hole 104A of the inner housing 104, the reciprocating gear 160a1 reciprocates relative to the inner housing 104 during rotation. When the reciprocating gear 160a1 reciprocates relative to the inner housing 104, the first driver 150 and the first display 130 are also driven to reciprocate on the X-axis relative to the inner housing 104. Therefore, the relative position of the first display 130 and the inner casing 104 can be changed between the two states of fig. 3A and 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 subsystem 160A to rotate. When the driven gear 160a2 rotates, a rack 142 of the second display 140 is driven to reciprocate on the X-axis relative to the inner housing 104, and the entire second display 140 is driven 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 between the reciprocating gear 160a1 and the internal gear hole 104A causes the first display 130 to move in the middle of the X-axis relative to the inner housing 104. Meanwhile, the rack 132 of the first display 130 drives the driven gear 160a2 to rotate clockwise, and the driven gear 160a2 drives the rack 142 to move to the right on the X axis, so as to drive the second display 140 to move to the middle on the X axis relative to the inner shell 104. Finally, the state of fig. 3A is changed 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 to a housing 144 of the second display 140, and the rack 132 is fixed to a housing 138 of the first display 130. Since 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 first optical system 110 and the second optical system 120 are respectively driven by the two to move on the X-axis, so that the head-mounted display device 100 can meet the requirements of users with different interpupillary distances (IPDs).
Fig. 4 is a schematic diagram of fig. 3A with an inner housing of the head-mounted display device and an outer housing of the display removed. Referring to fig. 4, the first driver 150 drives the second subsystem 160B in the reverse direction to adjust the distance between the first display 130 and the first optical system 110 on the Y-axis in the second mode. For example, the second subsystem 160B is a ratchet. Only when the first actuator 150 is reversed will the second subsystem 160B transmit the rotation. The forward rotation and the reverse rotation described herein are merely used to distinguish between the two rotations and are opposite directions, but are not limited to which direction the rotation is in the forward rotation or the reverse rotation. When the rotation of the first driver 150 is actually transmitted to the output end (not shown, such as a protruding rod) of the second subsystem 160B, the output end of the second subsystem 160B performs a circular motion. Since the output end of the second subsystem 160B is inserted into a sliding slot 136 of a display element 134 of the first display 130, the output end of the second subsystem 160B performing circular motion drives the display element 134 to perform reciprocating motion on the Y-axis perpendicular to the extending direction of the sliding slot 136. Specifically, the display element 134 reciprocates on the Y axis to be close to and far 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 requirements of users with different vision conditions.
Referring to fig. 2 and fig. 4, the head-mounted display device 100 of the present embodiment may further include a second driver 170 and a second adjustment system 180. The second adjustment system 180 connects 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 between the second display 140 and the second optical system 120 on the Y-axis 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 be adapted to users with different vision conditions. For example, the second driver 170 is a motor. The second adjustment system 180 is a gear system, i.e., each of one or more gears. The second driver 170 and the second adjustment system 180 are secured to the housing 144 of the second display 140. When the second driver 170 rotates, the output end (not shown, such as a protruding rod) of the second adjustment system 180 performs a circular motion. Since the output end of the second adjusting system 180 is inserted into a sliding slot 148 of the display element 146 of the second display 140, the output end of the second subsystem 160B performing circular motion drives the display element 146 to perform reciprocating motion on the Y axis perpendicular to the extending direction of the sliding slot 148. Specifically, the display element 146 reciprocates on the Y axis to be close to and away from the second optical system 120.
Fig. 5 is a schematic diagram of a head-mounted display device according to a second embodiment of the invention with an outer shell, an optical system and an inner shell removed. The head-mounted display device 200 of the present embodiment is substantially the same as the head-mounted display device 100 of the present embodiment shown in fig. 1, and only the difference between the two will be described. In the head-mounted display apparatus 200 of the 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 between the first display 130 and the second display 140 on the X-axis 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 between the first display 130 and the first optical system 110 on the Y-axis 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 via the first adjusting system 260 to meet the requirements of users with different vision conditions. The first driver 250 drives the first adjustment system 260 to adjust the distance between the second display 140 and the second optical system 120 on the Y-axis 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 adjusting system 260 to meet the requirements of users with different vision conditions.
As can be seen from the above description, in the head-mounted display device 200 of the present embodiment, the first driver 250 and the first adjusting system 260 are matched to adjust the distance between the first display 130 and the second display 140 on the X-axis, 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 prior art that only one distance can be adjusted by using one driver, the head-mounted display device 100 of the embodiment adjusts three distances by using one driver, so that the number of drivers can be reduced, and the cost, the volume and the weight are further reduced.
The first adjustment system 260 of the present embodiment includes a switching system 262, a first subsystem 264, a second subsystem 266, and a third subsystem 268. In the first mode, switching system 262 connects first secondary system 264 and disconnects second secondary system 266 from third secondary system 268. In the second mode, switching system 262 connects second subsystem 266 and disconnects first subsystem 264 from third subsystem 268. In the third mode, switching system 262 connects third subsystem 268 and disconnects first subsystem 264 and second subsystem 266. In other words, because the switching system 262 is provided, the first driver 250 can adjust three distances via three subsystems. Of course, in other embodiments, the number of subsystems may be increased to allow the first actuator 250 to adjust more distances.
The first driver 250 of the present embodiment is, for example, a motor. The switching system 262, the first subsystem 264, the second subsystem 266 and the third subsystem 268 are, for example, gear systems, respectively, that is, one or more gears. Although each gear system may include a plurality of gears, only the actuation of the critical gears is described herein and the actuation of the gears, which are only transmission, steering, and the like, is omitted.
FIG. 6 is a schematic diagram of a first driver and a switching system of the head mounted display device of FIG. 5. Referring to fig. 5 and fig. 6, the switching system 262 includes a transposition system 262A and a transmission system 262B. In reverse rotation of the first actuator 250, for example, the indexing system 262A is actuated to index a transmission 262B1 of the transmission 262B into contact with the first, second or third subsystem 264, 266 or 268. In other words, first drive 250, when reversed, may move transfer member 262B1 between the three positions via indexing system 262A, and transfer member 262B1 may only contact one of first secondary system 264, second secondary system 266, and third secondary system 268 in each position.
For example, the gear 262A1 of the indexing system 262A in contact with the first driver 150 is a ratchet and the gear 262B2 of the drive train 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 for driving the gears 262A1 and 262B 2. It is contemplated that only gear 262A1 of the indexing system 262A will transmit rotation when the first actuator 150 is rotating in the reverse direction, and only gear 262B2 of the drive train 262B will transmit rotation when the first actuator 150 is rotating in the forward direction.
FIG. 7 is an elevational perspective view of one gear of the transmission system of FIG. 5. Referring to fig. 6 and 7, the gear 262B2 is taken as an example to illustrate the operation of the ratchet, but the specific design of the ratchet is not limited thereto. Also, the gear 262A1 and the second subsystem 160B of FIG. 2 and the reciprocating gear 160A1 may be of similar design. In addition to the upper side of the gear 262B2 being seen from the perspective of FIG. 6 having teeth for contacting the gear 274, the lower side of the gear 262B2 being seen from the perspective of FIG. 7 also has teeth for contacting the drive member 262B 1.
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 262B 23. The ball 262B22 is sandwiched between the upper gear 262B21 and the lower gear 262B 23.
Fig. 9 and 10 are cross-sectional views of the gear of fig. 7 in two states. Referring to fig. 6 and 9, when the upper gear 262B21 is driven by the gear 274 to rotate counterclockwise, the ball 262B22 is pushed to a position closer to the center, so that the upper gear 262B21 cannot drive the lower gear 262B23 through the ball 262B 22. 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 will not drive the lower gear 262B23 to rotate. Referring to fig. 6 and 10, when the upper gear 262B21 is driven by the gear 274 to rotate clockwise, the balls 262B22 are pushed to a position farther away from the center, so that the upper gear 262B21 can drive the lower gear 262B23 through the balls 262B 22. 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, which will drive the lower gear 262B23 to rotate clockwise.
The operation of the gear 262B2 as a ratchet can be understood from the above description. Similarly, the operation of the gear 262A1 as a ratchet and the second subsystem 160B and the reciprocating gear 160A1 of FIG. 2 is omitted. FIG. 11 is a schematic view of FIG. 6 with a portion of the gear and the first driver removed. Referring to fig. 6 and 11, when the first driver 250 rotates reversely (i.e., counterclockwise), the lower gear 262B23 of the gear 262B2 will not be driven. Meanwhile, when the first actuator 250 rotates reversely, the gear 262A1 of the shift system 262A can drive the gear 262A2, and thus the gear 262A 3. As the gear 262A3 rotates, the position of the transmission member 262B1 of the transmission system 262B mounted on the gear 262A3 may be changed. Thus, when the first actuator 250 is reversed, the transmission member 262B1 is allowed to move between the three positions, and the transmission member 262B1 is only able to contact one of the first secondary system 264, the second secondary system 266, and the third secondary system 268 identified in fig. 5 in each of the three positions. When actuator 262B1 is moved to the desired position, actuator 262B1 will be responsible for driving the contacted first secondary system 264, second secondary system 266, or third secondary system 268. To avoid displacement during actuation of the actuator 262B1, which would result in failure to contact the first secondary system 264, the second secondary system 266, or the third secondary system 268, a catch 276 may be provided. The catch 276 may inhibit the clockwise rotation of the gear 262A3 to fix the position of the transmission 262B 1.
Fig. 12 is a schematic view of a portion of the gears of fig. 6. Referring to fig. 12, to determine the position of the transmission member 262B1 to confirm that the transmission member 262B1 is positioned and can drive one of the first subsystem 264, the second subsystem 266 and the third subsystem 268, which are indicated in fig. 5, three switches 280 can be disposed under the gear 262A3, and the lower side of the gear 262A3 has a rib 262a31, for example. As the gear 262A3 rotates, the ribs 262A31 may switch the switch 280 that is contacted. The position of the transmission member 262B1 can be determined according to the signal sent when the switch 280 is switched. In the present embodiment, the switch 280 is fixed to an inner housing (not shown) of the head-mounted display device 200 (shown in fig. 5), but the present invention is not limited thereto. The inner shell of the head mounted display device 200 described herein is substantially the same as the inner shell 104 of fig. 3A.
Fig. 13 is a bottom view of fig. 5. Referring to fig. 5 and 13, after the gear 262A1 of the shift system 262A allows the transmission member 262B1 to contact the first subsystem 264, the first driver 250 is rotated in the forward direction, in fig. 5, the first driver 250 is rotated in the clockwise direction, and in fig. 13, the first driver 250 is rotated in the counterclockwise direction. At this time, the rotation of the first driver 250 can be transmitted from the gear 262B2 and the transmission member 262B1 of the transmission system 262B to the first subsystem 264 in contact therewith. Fig. 14 is an elevational perspective view of fig. 11 with a portion of the gears removed. Referring to fig. 13 and 14, when the first driver 250 rotates forward (counterclockwise in fig. 14) and the driving gear 272 rotates counterclockwise, the driving gear 274 rotates clockwise, and the upper gear 262B21 rotates counterclockwise, and at this time, the lower gear 262B23 rotates counterclockwise. At the same time, the lower gear 262B23 drives the reciprocating gear 264A to rotate clockwise.
The teeth 264A1 of the reciprocating gear 264A of the first subsystem 264 mate with the internal gear aperture 144A of the housing 144 of the second display 140 (identified in FIG. 5), while the teeth 264A2 of the reciprocating gear 264A mate with the internal gear aperture 138A of the housing 138 of the first display 130 (identified in FIG. 5). 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, so as to adjust the distance between the first display 130 and the second display 140. Thus, housing 144 and housing 138 may be moved from being held at a greater distance from each other as shown in FIG. 13 to being held closer to each other as shown in FIG. 15. Also, the teeth 264A1 of the shuttle gear 264A contact only one side of the internal gear hole 144A of the housing 144, and the teeth 264A2 of the shuttle gear 264A contact only one side of the internal gear hole 138A of the housing 138. Therefore, when the state of fig. 13 is changed to the state of fig. 15, the first driver 250 continues to rotate forward, so that the state of fig. 15 can be changed to the state of fig. 13 again.
Fig. 16 is a schematic view of the head-mounted display device of fig. 5 with a housing of a display removed. Fig. 17 is a schematic view of fig. 16 with some elements removed and a housing for a first display attached. Referring to fig. 16 and 17, after the first driver 250 rotates in the reverse direction (counterclockwise in fig. 16) to allow the transmission member 262B1 to contact the second subsystem 266 via the gear 262A1 of the shift system 262A, the first driver 250 rotates in the forward direction (clockwise in fig. 16). When the first driver 250 rotates clockwise and the driving gear 272 rotates clockwise, the driving gear 274 rotates counterclockwise and the upper gear 262B21 rotates clockwise, which in turn drives the lower gear 262B23 (shown in fig. 14) to rotate clockwise. Meanwhile, the lower gear 262B23 drives the transmission member 262B1 to rotate counterclockwise, and further drives the gear 266B of the second subsystem 266 contacting therewith to rotate clockwise. When the rotation of the first driver 250 is actually transmitted to the output end 266A of the second subsystem 266, the output end 266A of the second subsystem 266 drives the display element 134 to reciprocate on the Y-axis via a sliding slot 136 of the display element 134 of the first display 130. Specifically, the display element 134 reciprocates in directions close to and away from the first optical system 110 (shown in fig. 2). Although the housing 138 of the first display 130 is fixed with the first optical system 110, the display element 134 of the first display 130 is movable 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.
Fig. 18 is a schematic view of another state of the head-mounted display device of fig. 5 with a housing of a display removed. Referring to FIG. 18, when the first actuator 250 rotates in a reverse direction (counterclockwise in FIG. 18) to allow the transmission member 262B1 to contact the third subsystem 268 via the gear 262A1 of the indexing system 262A, the first actuator 250 rotates in a forward direction (clockwise in FIG. 18). When the first driver 250 rotates clockwise and the driving gear 272 rotates clockwise, the driving gear 274 rotates counterclockwise and the upper gear 262B21 rotates clockwise, which in turn drives the lower gear 262B23 (shown in fig. 14) to rotate clockwise. Meanwhile, the lower gear 262B23 drives the transmission member 262B1 to rotate counterclockwise, and further drives the gear 268B of the third subsystem 268 contacting therewith to rotate clockwise. When the rotation of the first driver 250 is actually transmitted to the output 268A of the third subsystem 268, the output 268A of the third subsystem 268 drives the display element 146 of the second display 140 to reciprocate on the Y-axis via the sliding slot 148 of the display element 146. Specifically, the display element 146 is reciprocated in directions toward and away from the second optical system 120 (shown in FIG. 2). Although housing 144 (shown in FIG. 2) of second display 140 is fixed with second optical system 120, display element 146 of second display 140 is movable relative to housing 144 of 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 requirements of users with different vision conditions.
In summary, in the head-mounted display device of the present invention, because the adjustment system is matched with the driver, the distance between two displays and the distance between one display and the optical system can be adjusted by only one driver. Thus, fewer drivers may be configured in the head mounted display device. In addition, if the adjusting 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 adjusted by only one driver, so that the number of drivers can be further reduced.
Claims (10)
1. A head-mounted display device, comprising:
a first optical system;
a second optical system;
a first display assembled to an object side of the first optical system;
a second display assembled to the object side of the second optical system;
a first driver; and
and the first driver drives the first adjusting system to adjust the distance between the first display and the second display in a first mode, and the first driver drives the first adjusting system to adjust the distance between the first display and the first optical system in a second mode.
2. The head-mounted display device of claim 1, further comprising a second driver and a second adjustment system, wherein the second adjustment system connects the second driver, the second optical system and the second display, and the second driver drives the second adjustment system to adjust a distance between the second display and the second optical system in a third mode.
3. The head-mounted display device of 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 to reciprocate via the second adjustment system.
4. The head-mounted display device of claim 1, wherein the first adjustment system comprises a first subsystem and a second subsystem, the first driver driving the first subsystem in forward rotation to adjust the distance between the first display and the second display in the first mode, and the first driver driving the second subsystem in reverse rotation to adjust the distance between the first display and the first optical system in the second mode.
5. The head-mounted display device as recited in claim 4, wherein the first driver is a motor, the first subsystem and the second subsystem are gear systems, respectively, the first driver drives the first display and the second display to reciprocate in the first mode via the first subsystem, and the first driver drives the first display to reciprocate in the second mode via the second subsystem.
6. The head-mounted display device of claim 4, further comprising an inner housing, wherein the first subsystem comprises 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, and the first display drives the second display to reciprocate relative to the first display via the driven gear.
7. The head-mounted display device of 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 a distance between the second display and the second optical system in a third mode.
8. The head-mounted display device of claim 7, wherein the first adjusting system comprises a switching system, a first subsystem, a second subsystem and a third subsystem,
in the first mode, the switching system connects the first subsystem and disconnects the second subsystem and the third subsystem,
in the second mode, the switching system connects the second subsystem and disconnects the first subsystem and the third subsystem, and
in the third mode, the switching system connects the third subsystem and disconnects the second subsystem from the first subsystem.
9. The head-mounted display device as recited in claim 8, wherein the first driver is a motor, the switching system, the first subsystem, the second subsystem and the third subsystem are gear systems, respectively, the first driver drives the first display and the second display to reciprocate in the first mode via the switching system and the first subsystem, the first driver drives the first display to reciprocate in the second mode via the second subsystem, and the first driver drives the second display to reciprocate in the third mode via the first adjusting system and the third subsystem.
10. The head-mounted display device of claim 8, wherein the switching system comprises a shift system and a transmission system, the first driver drives the shift system to shift a transmission member of the transmission system to contact the first subsystem, the second subsystem or the third subsystem when rotating reversely, and the first driver drives the transmission member of the transmission system to drive the first subsystem, the second subsystem or the third subsystem contacting therewith when rotating normally.
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