WO2022151731A1 - 一种用于头戴式显示设备的光机装置以及光机模组 - Google Patents

一种用于头戴式显示设备的光机装置以及光机模组 Download PDF

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Publication number
WO2022151731A1
WO2022151731A1 PCT/CN2021/112795 CN2021112795W WO2022151731A1 WO 2022151731 A1 WO2022151731 A1 WO 2022151731A1 CN 2021112795 W CN2021112795 W CN 2021112795W WO 2022151731 A1 WO2022151731 A1 WO 2022151731A1
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WIPO (PCT)
Prior art keywords
lens
optical lens
light
opto
optical
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Application number
PCT/CN2021/112795
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English (en)
French (fr)
Inventor
李莉
Original Assignee
广州视享科技有限公司
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Publication date
Application filed by 广州视享科技有限公司 filed Critical 广州视享科技有限公司
Priority to US17/926,606 priority Critical patent/US20230350151A1/en
Priority to EP21918923.0A priority patent/EP4116758A4/en
Publication of WO2022151731A1 publication Critical patent/WO2022151731A1/zh

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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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses

Definitions

  • the present application relates to the field of head-mounted display devices, and in particular, to an opto-mechanical device for head-mounted display devices and an opto-mechanical module for head-mounted display devices.
  • Head-mounted display devices can achieve different effects such as virtual reality (VR), augmented reality (AR), and mixed reality (MR) by using optical-mechanical devices to transmit image information to the user's eyes.
  • VR virtual reality
  • AR augmented reality
  • MR mixed reality
  • the opto-mechanical device of the related art generally includes a display screen, a lens, an optical lens and a mounting bracket.
  • the display screen, the lens and the optical lens are all mounted on the mounting bracket, wherein the lens is usually installed in the hole position of the mounting bracket, and is connected with the hole position. the side walls are in close contact.
  • the image transmission process of the opto-mechanical device is as follows: the image light emitted by the display screen passes through the lens and then hits the optical lens, and is reflected and transmitted by the optical lens to the human eye. However, in this process, since the lens is in close contact with the hole of the mounting bracket, part of the image light will hit the side wall of the hole after passing through the lens, and this position will be illuminated by the image light and generate stray light.
  • the purpose of the present application is to provide an opto-mechanical device for a head-mounted display device to solve the shortcomings and deficiencies in the prior art.
  • An opto-mechanical device for a head-mounted display device of the present application includes: an optical lens assembly, a display unit, a lens, and a mount for mounting the optical lens assembly, the display unit and the lens;
  • the mounting seat is provided with a lens mounting hole, and the side wall of the lens mounting hole includes an opposite first side and a second side, and an opposite third side and a fourth side;
  • the lens is installed in the lens mounting hole, the first side surface and the second side surface are respectively clamped on two sides of the lens, a gap is formed between the third side surface and the lens, and the fourth side surface is A gap is formed between the side surface and the lens;
  • the display unit is arranged above the lens, and is used for emitting image light to the lens; the optical lens assembly is arranged below the lens, and is used for transmitting the image light transmitted through the lens to people Eye.
  • the lens mounting hole of the present application is clamped to the lens through the first side and the second side, and while the lens is firmly installed, there is a gap between the third side and the fourth side and the lens, which can reduce the amount of time after passing through the lens.
  • the image light emitted to the side of the lens mounting hole reduces the generation of stray light, thereby reducing the impact of stray light on the human eye.
  • the third side surface is inclined upward
  • the fourth side surface is inclined upward. In this case, part of the stray light can be reflected above the lens by the third side surface or the fourth side surface and then eliminated.
  • the third side surface is inclined downward, and the fourth side surface is inclined downward. At this time, part of the stray light can be reflected by the third side or the fourth side to the bottom of the lens and away from the optical lens assembly
  • the optical lens assembly includes a first optical lens and a second optical lens
  • the mounting seat includes a base plate and two side plates extending downward from left and right sides of the base plate, respectively;
  • the front sides of the base plate and the two side plates form a first lens mounting portion for mounting the first optical lens, and the rear sides of the base plate and the two side plates form a mounting portion for mounting the second optical lens.
  • the second lens mounting part ;
  • the display unit is mounted on the substrate, and the lens mounting hole is arranged on the substrate; the image light emitted by the display unit passes through the lens and is projected to the second optical lens at a first angle and Reflected by the second optical lens to the first optical lens, the first optical lens reflects the image light to the second optical lens, and the image light is projected to the second optical lens at a second angle lens, and transmits the second optical lens.
  • the front and rear sides of the two side plates form a certain angle with each other, so that the first optical lens and the second optical lens form a certain angle after installation, so that the image light emitted by the display unit can enter the human through a certain optical path.
  • Eyes are enough, so that the image light emitted by the display unit can be projected to the second optical lens at a first angle after passing through the lens, and reflected by the second optical lens to the first optical lens, and the first optical lens can reflect the image light to the second optical lens.
  • the optical lens the image light is projected to the second optical lens at a second angle, and is transmitted through the second optical lens.
  • the base plate further includes a protruding portion extending downward from the rear side of the base plate, and the rear sides of the two side plates and the protruding portion form the second lens mounting portion , the structure is convenient to fix the second optical lens.
  • a concave structure for eliminating stray light is provided on the side of the convex portion facing the lens, so as to prevent image light from irradiating the convex portion, thereby causing stray light to be emitted to the optical lens assembly.
  • a light-absorbing layer or a light-absorbing structure is provided on the surfaces of the third side and the fourth side.
  • the light-absorbing layer or the light-absorbing structure can absorb light, which can further reduce the reflection of image light and eliminate the third side. and stray light on the fourth side.
  • the light absorbing structure is a microstructure distributed in an array, and the microstructure includes at least one of a triangle, a parallelogram, a trapezoid, and a rectangle.
  • the microstructures distributed in the array can reflect light multiple times, and can absorb once during each reflection process, and can basically eliminate or even completely eliminate the light after multiple reflections.
  • the light absorbing layer comprises a light absorbing black coating or a light absorbing fluff layer.
  • the light-absorbing black coating or the light-absorbing fluff layer can absorb light, reduce the reflection of light, and reduce the influence of stray light.
  • the display unit includes a display screen and a fixing frame; the display screen is wrapped by the fixing frame; one end of the fixing frame covers the gap between the third side surface and the lens, and the other end covers
  • the gap between the fourth side surface and the lens can prevent the remaining light from entering the optical lens assembly from the gap between the third side surface and the lens, or from the gap between the fourth side surface and the lens, to interfere with imaging.
  • the top of the housing is provided with an installation opening
  • the installation opening cover is provided with a sealing cover.
  • the sealing cover can be installed in cooperation with the installation port through screws to play a dust-proof role.
  • the first side surface is provided with a first part and a second part that are connected to each other, the first part and the lens are fitted and connected to each other, and the second part is provided with a concave structure for eliminating stray light , play a role in eliminating stray light.
  • the present application also provides an opto-mechanical module for a head-mounted display device, comprising two opto-mechanical devices of the present application, and a connecting portion;
  • the two opto-mechanical devices are symmetrically arranged along the connecting portion and are connected through the connecting portion.
  • the optomechanical module can realize the effect of binocular augmented reality or binocular virtual reality, has a firm structure, and can effectively reduce the generation of stray light.
  • FIG. 1 is a schematic side structure diagram of an opto-mechanical device provided by an embodiment of the present application.
  • FIG. 2 is a schematic top-view structural schematic diagram of a mounting seat provided by an embodiment of the present application.
  • FIG. 3 is a schematic top-view structure diagram of a mounting seat provided by an embodiment of the present application after a lens is installed;
  • FIG. 4 is a schematic front view of an optomechanical device in the related art
  • FIG. 5 is a schematic front view structure of an opto-mechanical device according to an embodiment of the present application.
  • FIG. 6 is a schematic top-view structure diagram of another mounting seat provided by an embodiment of the present application.
  • FIG. 7 is a schematic top-view structure diagram of another mounting seat provided by an embodiment of the present application after the lens is installed;
  • FIG. 8 is a schematic side view of the structure of an optomechanical device in the related art.
  • FIG. 9 is a schematic side view structure diagram of another opto-mechanical device provided by an embodiment of the present application.
  • FIG. 10 is a schematic front view of a structure of an opto-mechanical device provided by an embodiment of the application.
  • FIG. 11 is a schematic front view structural diagram of an opto-mechanical device according to an embodiment of the application.
  • FIG. 12 is a schematic structural diagram of a light absorbing structure provided by an embodiment of the present application.
  • FIG. 13 is a schematic front view structure of a mounting seat provided by an embodiment of the application.
  • FIG. 16 is a schematic side view structure diagram of an opto-mechanical device provided by an embodiment of the application.
  • FIG. 17 is a perspective view of an opto-mechanical module provided by an embodiment of the present application.
  • this embodiment provides an optical-mechanical device for a head-mounted display device, including an optical lens assembly 10 , a display unit 20 , a lens 40 , and an optical lens assembly 10 , a display unit 20 and a lens 40 for installing the optical lens assembly 10 , the display unit 20 and the lens 40 the mount 30.
  • the display unit 20 is disposed above the lens 40 to emit image light to the lens 40 ; the optical lens assembly 10 is disposed below the lens 40 to transmit the image light transmitted by the lens 40 to the human eye.
  • the opto-mechanical device used for the head-mounted display device in this embodiment is mainly used for the head-mounted display device of augmented reality, for example, AR glasses.
  • the optical lens assembly 10 includes a first optical lens 13 and a second optical lens 12 .
  • the first optical mirror 13 is a concave mirror
  • the second optical mirror 12 is a flat mirror.
  • the first optical mirror 13 can be a curved mirror to reflect part of the light while Part of the light is transmitted;
  • the second optical lens 12 can be a beam splitter, which can reflect part of the light and transmit part of the light at the same time.
  • the image light emitted by the display unit 20 passes through the lens 40 and then projects to the second optical lens 12 at a first angle and is reflected by the second optical lens 12 to the first optical lens 13, and the first optical lens 13 reflects the image light to make it at the first angle.
  • the two angles are projected onto the second optical lens 12 , and transmit through the second optical lens 12 , and finally enter the human eye.
  • the mounting seat 30 is provided with a lens mounting hole 312, and the lens mounting hole 312 is used to mount the lens 40.
  • the present application reduces the generation of stray light by setting the lens mounting hole 312, thereby reducing the interference of the stray light on the image and the impact on the human eye. Impact.
  • the side walls of the lens mounting hole 312 include opposite first side surfaces 312a and second side surfaces 312b, and opposite third side surfaces 312c and fourth side surfaces 312d.
  • the two side surfaces 312b, the third side surface 312c and the fourth side surface 312d enclose the lens mounting hole 312.
  • the first side 312 a and the second side 312 b are respectively clamped to two sides of the lens 40 , and the first side 312 a and the second side 312 b face the side of the lens 40 .
  • the upper surface can be provided with a slot structure, so that the lens 40 is firmly clamped by the first side surface 312a and the second side surface 312b.
  • the third side surface 312c forms a gap with one of the other two sides of the lens 40
  • the fourth side surface 312d forms a gap with the other side of the other two sides of the lens 40 .
  • a gap is formed, that is, a certain distance exists between the lens 40 and a part of the side surface of the lens mounting hole 312 .
  • the first side surface 312a and the second side surface 312b of the lens mounting hole 312 are front and rear side surfaces
  • the third side surface 312c and the fourth side surface of the lens mounting hole 312 are the front and rear side surfaces.
  • the side surfaces 312d are left and right side surfaces.
  • the first side 312a is the front side, which is the front side of the lens 40;
  • the second side 312b is the rear side, which is the rear side of the lens 40;
  • the third side 312c is the left side , which forms a gap with the left side of the lens 40, that is, there is a gap between the third side 312c of the lens mounting hole 312 and the lens 40;
  • the fourth side 312d is the right side, which forms a gap with the right side of the lens 40, that is, the lens There is also a gap between the fourth side surface 312d of the mounting hole 312 and the lens 40 .
  • the opto-mechanical device also includes a lens 40 ′, a display unit 20 ′, an optical lens assembly 10 ′ and a lens 40 for installing the lens 40 ′.
  • the mounting seat 30' of the display unit 20' and the optical lens assembly 10' the mounting seat 30' is provided with a lens mounting hole 312', wherein the lens mounting hole 312' is close to the lens 40', which will lead to more display units
  • the image light emitted by 20' is directed to the side of the lens mounting hole 312', thereby causing more stray light to be generated. Please refer to FIG. 5 , and compare with FIG.
  • the straight line with the arrow in the drawing is the image light.
  • the straight line with the arrow in the drawing is the image light. It can be understood that when there is a gap between the third side 312c and the fourth side 312d of the lens mounting hole 312 and the lens 40 , Part of the image light that would otherwise be irradiated on the third side 312c and the fourth side 312d can be directly transmitted to the optical lens assembly 10, and this part of the image light will not generate stray light on the third side 312c and the fourth side 312d, so that it can effectively Therefore, the reflection of the image light irradiated on the third side surface 312c and the fourth side surface 312d is reduced, and the generation of stray light on the left and right sides of the lens mounting hole 312 is reduced, thereby reducing the interference of the stray light on the image and the influence on the human eye.
  • the first side 312a and the second side 312b of the lens mounting hole 312 are left and right side surfaces
  • the third side surface 312c and the fourth side surface 312d of the lens mounting hole 312 are front and rear side surfaces.
  • the first side 312a is the left side, which is the left side of the lens 40; the second side 312b is the right side, which is the right side of the lens 40; the third side 312c is the front
  • the side surface forms a gap with the front side of the lens 40, that is, there is a gap between the third side surface 312c and the lens 40;
  • the fourth side surface 312d is the rear side surface, which forms a gap with the rear side of the lens 40, that is, the fourth side surface 312d There is a gap with the lens 40 .
  • the opto-mechanical device also includes a lens 40 ′, a display unit 20 ′, an optical lens assembly 10 ′ and a lens 40 for installing the lens 40 ′.
  • the display unit 20', the mounting seat 30' of the optical lens assembly 10', the mounting seat 30' is provided with a lens mounting hole 312', wherein the lens mounting hole 312' is close to the lens 40', which will lead to more display units
  • the image light emitted by 20' is directed to the side of the lens mounting hole 312', thereby causing more stray light to be generated. Please refer to Fig. 9 and compare Fig. 8.
  • the straight line with the arrow in the drawing is the image light.
  • the second setting method can also achieve the effect of reducing stray light.
  • the difference is that in the second arrangement, the first side 312a is the left side, the second side 312b is the right side, the third side 312c is the front side, and the fourth side 312d is the rear side, which can effectively reduce the reflection of image light. , which can reduce the generation of stray light on the front and rear sides of the lens mounting hole 312 .
  • both the lens mounting hole 312 of the first setting method and the lens mounting hole 312 of the second setting method can reduce the generation of stray light on the lens mounting hole 312.
  • the optical-mechanical device in this embodiment uses the first setting method. the lens mounting hole 312.
  • the lens mounting hole 312 of the present application is clamped to the lens 40 through the first side surface 312a and the second side surface 312b. While the lens 40 is securely mounted, there is a gap between the third side surface 312c and the fourth side surface 312d and the lens 40, which can reduce the penetration of the lens 40.
  • the image light emitted to the side of the lens mounting hole 312 after passing through the lens 40 reduces the reflection of the image light from the side of the lens mounting hole 312, thereby reducing the generation of stray light, thereby reducing the influence of stray light on the human eye.
  • the third side surface 312c and the fourth side surface 312d can be arranged obliquely, so that the irradiation to the third side surface 312c or the fourth side surface 312d can be changed.
  • the reflection direction of the image light (equivalent to changing the propagation direction of the stray light), so that the stray light is emitted to other positions, without affecting the human eye to observe the image.
  • the straight line with the solid arrow in the figure is the image light
  • the straight line with the hollow arrow is the stray light.
  • part of the stray light can be reflected to the top of the lens 40 by the third side surface 312c or the fourth side surface 312d and then eliminated.
  • the straight line with the solid arrow in the figure is the image light
  • the straight line with the hollow arrow is the stray light.
  • the bottom is in the direction from the lens 40 to the optical lens assembly 10 .
  • part of the stray light can be reflected by the third side surface 312c or the fourth side surface 312d to the bottom of the lens 40 and away from the display on the optical lens assembly 10 that can be seen by the human eye.
  • Area 60, and the third side 312c is inclined downward, and the fourth side 312d is inclined downward. This arrangement also minimizes the reflection of image light, thereby eliminating the interference of stray light on the image and the impact on human eyes.
  • the surfaces of the third side 312c and the fourth side 312d are provided with a light absorbing layer or a light absorbing structure, and the light absorbing layer or the light absorbing structure can absorb light, which can further reduce the reflection of the image light, and eliminate the third side 312c and the light absorbing structure. Stray light on the fourth side 312d.
  • the light absorbing structures may be microstructures distributed in an array, and two microstructures are formed with depressions.
  • the microstructures include at least one of a triangle, a parallelogram, a trapezoid, and a rectangle. Please refer to Fig. 12, the microstructure shown in Fig. 12(1) is a triangle, the microstructure shown in Fig.
  • the microstructure shown in Fig. 12(3) is a parallelogram
  • the microstructure shown in Fig. 12(3) is a trapezoid
  • the microstructure shown in (4) is rectangular.
  • the array distribution of the microstructures can also be specified, and the array distribution of different microstructures can be different.
  • the array distribution of the triangular structures is 10 micrometers apart, that is, the distance between two adjacent triangular structures is 10 micrometers.
  • the array distribution of parallelograms is 20 micrometers apart, that is, two adjacent parallelogram structures are separated by 20 micrometers.
  • the microstructures distributed in the array can reflect light multiple times, and can absorb once during each reflection process, and can basically eliminate or even completely eliminate the light after multiple reflections.
  • the light-absorbing layer in this embodiment includes a light-absorbing black coating layer or a light-absorbing fluff layer.
  • the light-absorbing black coating or the light-absorbing fluff layer can absorb light, reduce the reflection of light, and reduce the influence of stray light.
  • the mounting seat 30 includes a base plate 31 and two side plates 32 extending downward from the left and right sides of the base plate 31 respectively.
  • the front sides of the base plate 31 and the two side plates 32 form a first lens mounting portion for mounting the first optical lens 13
  • the rear sides of the base plate 31 and the two side plates 32 form a second lens for mounting the second optical lens 12 .
  • the lens mounting portion, the first lens mounting portion and the second lens mounting portion may be grooves or other structures for mounting lenses.
  • the mounting seat 30 further includes a beam 33, the beam 33 connects the bottoms of the two side plates 32, the bottoms of the two side plates 32 are the ends of the two side plates 32 away from the base plate 31.
  • the two side plates 32 are connected by a beam 33 in this embodiment.
  • the base plate 31, the two side plates 32 and the beam 33 together form a frame.
  • the strength of the two side plates 32 can be increased, so that the strength of the entire mounting seat 30 can be higher, and the lens can be fixed better.
  • the opto-mechanical device in this embodiment needs to be installed in the mirror frame of the head-mounted display device. Therefore, connecting ears may also be provided on the substrate 31 to be connected with the mirror frame.
  • the display unit 20 is mounted on the substrate 31 , and the lens mounting holes 312 are provided on the substrate 31 .
  • the first optical lens 13 is mounted on the first lens mounting portion
  • the second optical lens 12 is mounted on the second lens mounting portion
  • the front and rear sides of the two side plates 32 form a certain angle with each other, so that the first optical lens 13 and the second lens
  • the optical lens 12 forms a certain angle after installation, and the two can realize that the image light emitted by the display unit 20 can enter the human eye through a certain optical path, so that the image light emitted by the display unit 20 can pass through the lens 40 and enter the human eye.
  • An angle is projected to the second optical lens 12 and reflected by the second optical lens 12 to the first optical lens 13, the first optical lens 13 reflects the image light to the second optical lens 12, and the image light is projected to the second optical lens at a second angle lens 12 and transmits the second optical lens 12 .
  • the human eye is located on the side of the second optical lens 12 away from the first optical lens 13 , the image light transmitted through the second optical lens 12 will enter the human eye and be seen by the human eye.
  • the first lens mounting portion is a first groove 35 provided on the front side of the base plate 31 and the front sides of the two side plates 32 .
  • the second lens mounting portion is a second groove 34 provided on the rear side of the base plate 31 and the rear sides of the two side plates 32 .
  • the first optical lens 13 is inserted into the first groove 35
  • the second optical lens 12 is inserted into the second groove 34 .
  • the first groove 35 and the second groove 34 are respectively provided on the base plate 31 and the two side plates 32 , and the first optical lens 13 can be positioned at three points through three parts (the base plate 31 and the two side plates 32 ). It is stable, and the same is true for the second optical lens 12 .
  • the two sides of the first optical lens 13 are inserted into the first grooves 35 of the two side plates 32 respectively, and the top edge of the first optical lens 13 is inserted into the first grooves 35 of the base plate 31; the second The two sides of the optical lens 12 are inserted into the second grooves 34 of the two side plates 32 respectively, and the top edge of the optical lens 12 is inserted into the second grooves 34 of the base plate 31 .
  • the mounting seat 30 of the present application is easy to assemble and disassemble, and also ensures the stability of the assembly of each component, and can reduce the weight of the opto-mechanical device.
  • the beam 33 of the mounting seat 30 connects the two side plates 32, so that the overall structure of the mounting seat 30 is more stable, the two side plates 32 are not easily deformed, and the lens mounted on the mounting seat 30 will not cause deviation of its optical path.
  • the ends of the first optical lens 13 and the second optical lens 12 abut against the base plate 31, so that the two optical lenses and the base plate 31 together form a structure similar to a triangle, and the two optical lenses can withstand greater impact .
  • the first optical lens 13 can be inserted into the first grooves 35 of the base plate 31 and the two side plates 32 first, and then the second optical lens 12 can be inserted into the base plate 31 At the same time, the ends of the first optical lens 13 and the second optical lens 12 that are far away from the base plate 31 are in contact with each other in the second grooves 34 of the two side plates 32 to realize stable installation of the optical lenses.
  • sealant is filled at the abutting position of the first optical lens 13 and the second optical lens 12 .
  • the base plate 31 further includes a housing 311 extending from the upper side of the base plate 31 and having an accommodating cavity.
  • the bottom of the accommodating cavity of the housing 311 communicates with the lens mounting hole 312 , and the display unit 20 is installed on the in the accommodating cavity of the housing 311 .
  • the display unit 20 includes a display screen 21 and a fixing frame 22 ; the display screen 21 is used for emitting image light, and the fixing frame 22 is used for fixing the display screen 21 .
  • the display screen 21 is wrapped by the fixing frame 22, and the user can lock the fixing frame 22 in the accommodating cavity by screws.
  • one end of the fixing frame 22 covers the gap between the third side 312c and the lens 40, and the other end covers the gap between the fourth side 312d and the lens 40, which can prevent the remaining light from passing through the gap between the third side 312c and the lens 40, or from the gap between the third side 312c and the lens 40.
  • the gap between the fourth side surface 312d and the lens 40 enters the optical lens assembly 10 and interferes with imaging.
  • the top of the casing 311 is provided with an installation opening, which facilitates the installation of the display unit 20 through the installation opening of the casing 311 .
  • the installation opening cover is provided with a sealing cover 313 .
  • the sealing cover 313 can be installed in cooperation with the installation opening through screws, so as to play a role of dustproof.
  • a cable opening 315 is provided on the side wall of the casing 311 . After the display unit 20 is installed into the accommodating cavity, its cables are led out through the cable opening 315 to be connected with other electronic components.
  • the substrate 31 in this embodiment may further include a protruding portion 316 extending downward from the rear side of the substrate 31 , and the rear sides of the two side plates 32 and the protruding portion 316 form a second lens In the mounting portion, the second groove 34 of the base plate 31 is located on the protruding portion 316 , and this structure is convenient for fixing the second optical lens 12 .
  • the side of the convex portion 316 facing the lens 40 in this embodiment is provided with a concave for eliminating stray light.
  • the concave structure includes at least one light-proof surface 316a, and the light-proof surface 316a is inclined upward to prevent the image light from being reflected into the human eye, thereby eliminating the interference of the stray light on the image and the influence on the human eye.
  • the light-proof surface 316a may also be provided with the above-mentioned light-absorbing layer or light-absorbing structure to further eliminate stray light.
  • the first side 312a of the lens mounting hole 312 is provided with a first part and a second part that are connected to each other, the first side 312a is the rear side, the first part and the lens are installed and connected to each other, the second Parts are provided with recessed structures for eliminating stray light.
  • the concave structure of the second part is similar to the concave structure of the convex part, and also plays the role of eliminating stray light.
  • the opto-mechanical device of this embodiment can realize an augmented reality effect or a virtual reality effect for one eye when used alone, and can realize an augmented reality effect or a virtual reality effect for both eyes when used together. In order to make the optomechanical device work better when the two are used together, the degree of coordination is higher.
  • the present application further provides an opto-mechanical module for a head-mounted display device, which includes two opto-mechanical devices of this embodiment, and a connecting portion 50 .
  • the two opto-mechanical devices are symmetrically arranged along the connecting portion 50 and are connected through the connecting portion 50 .
  • the connecting portion 50 serves to connect two opto-mechanical devices, and can be a connecting plate.
  • the connecting portion 50 can be provided with a plurality of weight-reducing grooves to realize the light-weight of the opto-mechanical module.
  • the optomechanical module can realize the effect of binocular augmented reality or binocular virtual reality, and has a firm structure.

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Abstract

一种用于头戴式显示设备的光机装置，包括光学镜片组件（10）、显示单元（20）、透镜（40）以及安装座（30）。安装座（30）上设有透镜安装孔（312），透镜安装孔（312）的侧壁包括相对的第一侧面（312a）和第二侧面（312b），以及相对的第三侧面（312c）和第四侧面（312d）。透镜（40）装入透镜安装孔（312），第一侧面（312a）和第二侧面（312b）分别卡接于透镜（40）的其中两侧，第三侧面（312c）与透镜（40）之间形成间隙，第四侧面（312d）与透镜（40）之间形成间隙。透镜安装孔（312）通过第一侧面（312a）和第二侧面（312b）卡接透镜（40），在牢固安装透镜（40）的同时，第三侧面（312c）和第四侧面（312d）与透镜（40）之间存在间隙，可以减少穿过透镜（40）后射向透镜安装孔（312）侧面的图像光，从而减少杂散光的产生，进而减弱杂散光对人眼的影响。

Description

一种用于头戴式显示设备的光机装置以及光机模组
本申请要求于2021年01月15日提交中国专利局、申请号为202120119910.7、发明名称为“一种用于头戴式显示设备的光机装置以及光机模组”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及头戴式显示设备领域，特别是涉及一种用于头戴式显示设备的光机装置以及一种用于头戴式显示设备的光机模组。
背景技术
头戴式显示设备，通过使用光机装置向使用者的眼睛传输图像信息，可以实现虚拟现实(VR)、增强现实(AR)、混合现实(MR)等不同效果。
相关技术的光机装置一般包括显示屏、透镜、光学镜片以及安装支架，显示屏、透镜以及光学镜片均安装于安装支架上，其中，透镜通常安装于安装支架的孔位中，并与孔位的侧壁紧密接触。光机装置图像传输的过程为：显示屏发出的图像光线穿过透镜后射至光学镜片，经光学镜片的反射和透射后射向人眼。但是在这过程中，由于透镜与安装支架的孔位紧密接触，部分图像光线穿过透镜后会射至孔位的侧壁，该位置会被图像光线照亮产生的杂散光，杂散光同样会射向光学镜片，并经光学镜片的反射和透射后射向人眼。而杂散光太多，会导致使用者在观看图像时在图像的边缘产生带状的亮纹或者光斑，影响观看体验。
实用新型内容
本申请的目的在于提供一种用于头戴式显示设备的光机装置，以解决现有技术中的缺点与不足。
本申请的一种用于头戴式显示设备的光机装置，包括：光学镜片组件、显示单元、透镜以及用于安装所述光学镜片组件、显示单元和透镜的安装座；
所述安装座上设有透镜安装孔，所述透镜安装孔的侧壁包括相对的第一侧面和第二侧面，以及相对的第三侧面和第四侧面；
所述透镜装入所述透镜安装孔，所述第一侧面和第二侧面分别卡接于所述透镜的其中两侧，所述第三侧面与所述透镜之间形成间隙，所述第四侧面与所述透镜之间形成间隙；
所述显示单元设置于所述透镜的上方，用于发出图像光射至所述透镜；所述光学镜片 组件设置于所述透镜的下方，用于将经所述透镜透射的图像光传播至人眼。
相对于相关技术，本申请的透镜安装孔通过第一侧面和第二侧面卡接透镜，在牢固安装透镜的同时，第三侧面和第四侧面与透镜之间存在间隙，可以减少穿过透镜后射向透镜安装孔侧面的图像光，从而减少杂散光的产生，进而减弱杂散光对人眼的影响。
在一个实施例中，所述第三侧面朝向上方倾斜布置，所述第四侧面朝向上方倾斜布置，此时，部分杂散光能够被第三侧面或第四侧面反射至透镜上方后消除。
在一个实施例中，所述第三侧面朝向下方倾斜布置，所述第四侧面朝向下方倾斜布置，此时部分杂散光能够被第三侧面或第四侧面反射至透镜下方，并远离光学镜片组件上人眼所能看到的显示区域，并且第三侧面朝向下方倾斜布置，第四侧面朝向下方倾斜布置这种布置方式也尽量减少针对图像光的反射，从而消除杂散光对图像的干扰和对人眼的影响。
在一个实施例中，所述光学镜片组件包括第一光学镜片和第二光学镜片；所述安装座包括基板以及分别从所述基板左右侧向下延伸的两个侧板；
所述基板和两个侧板的前侧形成用于安装所述第一光学镜片的第一镜片安装部，所述基板和两个侧板的后侧形成用于安装所述第二光学镜片的第二镜片安装部；
所述显示单元安装在所述基板上，所述透镜安装孔设置于所述基板上；所述显示单元发出的图像光穿过所述透镜后以第一角度投射到所述第二光学镜片并被所述第二光学镜片反射至所述第一光学镜片，所述第一光学镜片反射所述图像光至所述第二光学镜片，所述图像光以第二角度投射到所述第二光学镜片，并透射所述第二光学镜片。
通过两个侧板的前后两侧互相形成一定的角度，使得第一光学镜片和第二光学镜片在安装后形成一定的夹角，两者能够实现显示单元出射的图像光经过一定的光路进入人眼即可，从而能够使得显示单元发出的图像光穿过透镜后以第一角度投射到第二光学镜片并被第二光学镜片反射至第一光学镜片，第一光学镜片反射图像光至第二光学镜片，图像光以第二角度投射到第二光学镜片，并透射第二光学镜片。当人眼位于第二光学镜片远离第一光学镜片的一侧时，透射过第二光学镜片的图像光则会进入人眼，从而被人眼所看到。
在一个实施例中，所述基板还包括一从所述基板后侧向下延伸出的凸起部，所述两个侧板的后侧和所述凸起部形成所述第二镜片安装部，该结构便于固定第二光学镜片。
在一个实施例中，所述凸起部朝向所述透镜的一面设置有用于消除杂散光的凹陷结构，防止图像光照射到凸起部，从而产生杂散光射至光学镜片组件。
在一个实施例中，所述第三侧面、第四侧面的表面上均设有吸光层或吸光结构，吸光层或吸光结构可以吸收光线，能够进一步地减少针对图像光的反射，消除第三侧面和第四侧面上的杂散光。
在一个实施例中，所述吸光结构为阵列分布的微结构，所述微结构包括三角形、平行四边形、梯形以及矩形中的至少一种结构。在此种设置中，阵列分布的微结构可以光线进行多次反射，并且在每次反射过程中可以进行一次吸收，在经过多次反射后可以将光线基本上消除甚至完全消除。
在一个实施例中，所述吸光层包括吸光黑色涂层或吸光绒毛层。吸光黑色涂层或吸光绒毛层均可以吸收光线，减弱光线的反射，减少杂散光的影响。
在一个实施例中，所述显示单元包括显示屏和固定架；所述显示屏被所述固定架包裹；所述固定架的一端盖住所述第三侧面与透镜的间隙，另一端盖住所述第四侧面与透镜的间隙，可以防止其余光线从第三侧面与透镜的间隙，或者从第四侧面与透镜的间隙进入光学镜片组件中，干扰成像。
在一个实施例中，所述壳体的顶部设有安装口，所述安装口盖设有密封盖。密封盖可以通过螺丝与安装口相互配合安装，起到防尘作用。
在一个实施例中，所述第一侧面设置有相互连接的第一部分以及第二部分，所述第一部分与所述透镜相互配合安装连接，所述第二部分设置有用于消除杂散光的凹陷结构，起到消除杂散光的作用。
本申请还提供一种用于头戴式显示设备的光机模组，包括两个本申请的光机装置，以及连接部；
两个所述光机装置沿所述连接部对称设置，且通过所述连接部连接。
相对于相关技术，该光机模组可以实现双目增强现实或双目虚拟现实的效果，结构牢固，且能够有效减少杂散光的产生。
附图说明
图1为本申请一个实施例提供的光机装置的侧面结构示意图；
图2为本申请一个实施例提供的一种安装座俯视结构示意图；
图3为本申请一个实施例提供的一种安装座装入透镜后的俯视结构示意图；
图4为相关技术中光机装置的正视结构示意图；
图5为本申请一个实施例提供的一种光机装置的正视结构示意图；
图6为本申请一个实施例提供的另一种安装座俯视结构示意图；
图7为本申请一个实施例提供的另一种安装座装入透镜后的俯视结构示意图；
图8为相关技术中光机装置的侧视结构示意图；
图9为本申请一个实施例提供的另一种光机装置的侧视结构示意图；
图10为本申请一个实施例提供的一种光机装置的正视结构示意图；
图11为本申请一个实施例提供的一种光机装置的正视结构示意图；
图12为本申请一个实施例提供的吸光结构的结构示意图；
图13为本申请一个实施例提供的一种安装座的正视结构示意图；
图14为本申请一个实施例提供的一种光机装置前侧的爆炸图；
图15为本申请一个实施例提供的一种光机装置后侧的爆炸图；
图16为本申请一个实施例提供的一种光机装置的侧视结构示意图；
图17为本申请一个实施例提供的一种光机模组的立体图。
具体实施方式
请参阅图1，本实施例提供一种用于头戴式显示设备的光机装置，包括光学镜片组件10、显示单元20、透镜40以及用于安装光学镜片组件10、显示单元20和透镜40的安装座30。其中，显示单元20设置于透镜40的上方，用于发出图像光射至透镜40；光学镜片组件10设置于透镜40的下方，用于将经透镜40透射的图像光传播至人眼。本实施例用于头戴式显示设备的光机装置主要用于增强现实的头戴式显示设备，例如，AR眼镜。
在本实施例中，光学镜片组件10包括第一光学镜片13和第二光学镜片12。在一实施例中，第一光学镜片13为凹面反射镜，第二光学镜片12为平面反射镜，在其他一些实施例中，第一光学镜片13可以是曲面反射镜，以实现反射部分光同时透射部分光；第二光学镜片12可以是分光镜，可以实现反射部分光同时透射部分光。显示单元20发出的图像光穿过透镜40后以第一角度投射到第二光学镜片12并被第二光学镜片12反射至第一光学镜片13，第一光学镜片13反射图像光使其以第二角度投射到第二光学镜片12，并透射第二光学镜片12，最后射入人眼。
安装座30上设有透镜安装孔312，透镜安装孔312用于安装透镜40，本申请通过对透镜安装孔312的设置，减少杂散光的产生，从而减弱杂散光对图像的干扰、对人眼的影响。请参阅图2，在一实施例中，透镜安装孔312的侧壁包括相对的第一侧面312a和第二侧面312b，以及相对的第三侧面312c和第四侧面312d，第一侧面312a、第二侧面312b、第三侧面312c和第四侧面312d围合成透镜安装孔312。
请参图3，当透镜40装入透镜安装孔312时，第一侧面312a和第二侧面312b分别卡接透镜40的其中两侧，第一侧面312a和第二侧面312b朝向透镜40的一侧上可以被设置为卡槽结构，使得透镜40稳固地被第一侧面312a和第二侧面312b卡接。
请继续参图3，当透镜40装入透镜安装孔312时，第三侧面312c与透镜40的另外两侧中的一侧形成间隙，第四侧面312d与透镜40另外两侧中的另一侧形成间隙，即透镜40与透镜安装孔312的部分侧面之间存在一定距离。
请参阅图2和3，在一实施例中，作为第一种设置方式，透镜安装孔312的第一侧面312a和第二侧面312b为前后侧面，透镜安装孔312的第三侧面312c和第四侧面312d为左右侧面。例如，在该设置方式中，第一侧面312a为前侧面，其卡接透镜40的前侧；第二侧面312b为后侧面，其卡接透镜40的后侧；第三侧面312c为左侧面，其与透镜40的左侧形成间隙，即透镜安装孔312的第三侧面312c与透镜40之间具有空隙；第四侧面312d为右侧面，其与透镜40的右侧形成间隙，即透镜安装孔312的第四侧面312d与透镜40之间也具有空隙。请参阅图4，附图中带箭头的直线为图像光，可以看出，在相关技术中，光机装置也包括透镜40’、显示单元20’、光学镜片组件10’和用于安装透镜40’、显示单元20’和光学镜片组件10’的安装座30’，安装座30’上设有透镜安装孔312’，其中透镜安装孔312’紧贴透镜40’，这会导致较多显示单元20’发出的图像光射向透镜安装孔312’的侧面，从而导致较多的杂散光产生。请参阅图5，并对比图4，附图中带箭头的直线为图像光，可以理解的是，当透镜安装孔312的第三侧面312c和第四侧面312d与透镜40之间具有间隙时，部分原本会照射到第三侧面312c和第四侧面312d图像光能够直接传播至光学镜片组件10上，此部分图像光不会在第三侧面312c和第四侧面312d上产生杂散光，从而能够有效地减少照射第三侧面312c和第四侧面312d对图像光的反射，减少透镜安装孔312左右侧面的杂散光的产生，进而减弱杂散光对图像的干扰、对人眼的影响。
请参阅图6和7，作为第二种设置方式，透镜安装孔312的第一侧面312a和第二侧面 312b为左右侧面，透镜安装孔312的第三侧面312c和第四侧面312d为前后侧面。例如，在该设置方式中，第一侧面312a为左侧面，其卡接透镜40的左侧；第二侧面312b为右侧面，其卡接透镜40的右侧；第三侧面312c为前侧面，其与透镜40的前侧形成间隙，即系第三侧面312c与透镜40之间具有空隙；第四侧面312d为后侧面，其与透镜40的后侧形成间隙，即系第四侧面312d与透镜40之间具有空隙。请参阅图8，附图中带箭头的直线为图像光，可以看出，在相关技术中，光机装置也包括透镜40’、显示单元20’、光学镜片组件10’和用于安装透镜40’、显示单元20’、光学镜片组件10’的安装座30’，安装座30’上设有透镜安装孔312’，其中透镜安装孔312’紧贴透镜40’，这会导致较多显示单元20’发出的图像光射向透镜安装孔312’的侧面，从而导致较多的杂散光产生。请参阅图9，并对比图8，附图中带箭头的直线为图像光，可以理解的是，与第一种设置方式原理类似，第二种设置方式同样可以实现减少杂散光产生的效果，不同在于第二种设置方式中第一侧面312a为左侧面，第二侧面312b为右侧面，第三侧面312c为前侧面，第四侧面312d为后侧面，能够有效减少对图像光的反射，其能够减少透镜安装孔312前后侧面的杂散光的产生。
不难理解，第一种设置方式的透镜安装孔312和第二种设置方式的透镜安装孔312都能够减少透镜安装孔312上杂散光的产生，本实施例光机装置使用第一种设置方式的透镜安装孔312。
本申请的透镜安装孔312通过第一侧面312a和第二侧面312b卡接透镜40，在牢固安装透镜40的同时，第三侧面312c和第四侧面312d与透镜40之间存在间隙，可以减少穿过透镜40后射向透镜安装孔312侧面的图像光，减少透镜安装孔312侧面对图像光的反射，从而减少杂散光的产生，进而减弱杂散光对人眼的影响。
虽然，第三侧面312c和第四侧面312d均与透镜40存在一定的间隙，但仍然会有少量图像光穿过透镜40后射至第三侧面312c或第四侧面312d，从而产生杂散光。
因此，为了进一步地减少第三侧面312c和第四侧面312d的杂散光，可以将第三侧面312c和第四侧面312d倾斜布置，这样一来，可以改变照射到第三侧面312c或第四侧面312d的图像光的反射方向(相当于改变杂散光的传播方向)，使杂散光射至其他位置，不影响人眼观察图像。请参阅图10，图中带实心箭头的直线为图像光，带空心箭头的直线为杂散光，可选地，第三侧面312c朝向上方倾斜布置，第四侧面312d朝向上方倾斜布置，朝向上方即朝透镜40至显示单元20的方向，此时，部分杂散光能够被第三侧面312c或第四侧面312d 反射至透镜40上方后消除。同样，请参阅图11，图中带实心箭头的直线为图像光，带空心箭头的直线为杂散光，可选地，第三侧面312c朝向下方倾斜布置，第四侧面312d朝向下方倾斜布置，朝向下方即朝透镜40至光学镜片组件10的方向，此时部分杂散光能够被第三侧面312c或第四侧面312d反射至透镜40下方，并远离光学镜片组件10上人眼所能看到的显示区域60，并且第三侧面312c朝向下方倾斜布置，第四侧面312d朝向下方倾斜布置这种布置方式也尽量减少针对图像光的反射，从而消除杂散光对图像的干扰和对人眼的影响。
可选地，第三侧面312c和第四侧面312d的表面上均设有吸光层或吸光结构，吸光层或吸光结构可以吸收光线，能够进一步地减少针对图像光的反射，消除第三侧面312c和第四侧面312d上的杂散光。在一实施例中，吸光结构可以为阵列分布的微结构，两个微结构中形成凹陷，可选地，微结构包括三角形、平行四边形、梯形以及矩形中的至少一种结构。请参阅图12，图12(1)中示出的微结构是三角形，图12(2)中示出的微结构是平行四边形，图12(3)中示出的微结构是梯形，图12(4)中示出的微结构是矩形。微结构的阵列分布也可以是指定的，不同的微结构的阵列分布可以不同。例如，三角形结构的阵列分布是间隔10微米，即相邻两个三角形结构间隔10微米。平行四边形的阵列分布是间隔20微米，即相邻两个平行四边形结构间隔20微米。在此种设置中，阵列分布的微结构可以光线进行多次反射，并且在每次反射过程中可以进行一次吸收，在经过多次反射后可以将光线基本上消除甚至完全消除。另外，本实施例吸光层包括吸光黑色涂层或吸光绒毛层。吸光黑色涂层或吸光绒毛层均可以吸收光线，减弱光线的反射，减少杂散光的影响。
请参阅图13-16，在本实施例中，安装座30包括基板31以及分别从基板31左右侧向下延伸的两个侧板32。基板31和两个侧板32的前侧形成用于安装第一光学镜片13的第一镜片安装部，基板31和两个侧板32的后侧形成用于安装第二光学镜片12的第二镜片安装部，第一镜片安装部和第二镜片安装部可以为凹槽，也可以是其他用于安装镜片的结构。在一实施例中，安装座30还包括一横梁33，横梁33连接两个侧板32的底部，两个侧板32底部即两个侧板32远离基板31的一端，由于光机装置对镜片的位置要求较高，为了防止两个侧板32在使用时发生形变，本实施例通过一横梁33连接两个侧板32，基板31、两个侧板32和横梁33共同围成一框体，可以增加两个侧板32的强度，进而使整个安装座30强度更高，可以更加好的固定镜片。本实施例的光机装置需要安装在头戴式显示设备的镜框中使用，因此，在基板31上还可以设置连接耳，与镜框进行连接。
显示单元20安装在基板31上，透镜安装孔312设置于基板31上。第一光学镜片13安装于第一镜片安装部，第二光学镜片12安装于第二镜片安装部，两个侧板32的前后两侧互相形成一定的角度，使得第一光学镜片13和第二光学镜片12在安装后形成一定的夹角，两者能够实现显示单元20出射的图像光经过一定的光路进入人眼即可，从而能够使得显示单元20发出的图像光穿过透镜40后以第一角度投射到第二光学镜片12并被第二光学镜片12反射至第一光学镜片13，第一光学镜片13反射图像光至第二光学镜片12，图像光以第二角度投射到第二光学镜片12，并透射第二光学镜片12。当人眼位于第二光学镜片12远离第一光学镜片13的一侧时，透射过第二光学镜片12的图像光则会进入人眼，从而被人眼所看到。
在本实施例中，第一镜片安装部为设于基板31的前侧和两个侧板32的前侧的第一凹槽35。第二镜片安装部为设于基板31的后侧和两个侧板32的后侧的第二凹槽34。第一光学镜片13卡接入第一凹槽35内，第二光学镜片12卡接入第二凹槽34内。第一凹槽35和第二凹槽34分别设于基板31和两个侧板32上，第一光学镜片13可以通过三个部位(基板31、两个侧板32)实现三点定位，安装稳固，同理第二光学镜片12也如此。在一实施例中，第一光学镜片13的两侧边分别卡接入两个侧板32的第一凹槽35内，其顶边卡接入基板31的第一凹槽35内；第二光学镜片12的两个侧边分别卡接入两个侧板32的第二凹槽34内，其顶边卡接入基板31的第二凹槽34内。
本申请的安装座30，拆装方便的同时还保证了各个组件装配的稳固，能够减少光机装置的重量。安装座30的横梁33连接两个侧板32，使得安装座30整体结构更加稳固，两个侧板32不容易发生形变，安装在安装座30的镜片不会因此导致其光路产生偏差。
在一实施例中，第一光学镜片13和第二光学镜片12两者远离基板31的一端相抵接，使得两光学镜片和基板31共同形成类似三角形的结构，两光学镜片能够承受更大的冲击。另外，还可以在两光学镜片相抵接的位置点胶粘连，实现两光学镜片的密封，起到防尘作用，减少点胶工序，提高生产率。
在安装本申请的光学镜片组件10时，可以先将第一光学镜片13卡接入基板31和两个侧板32的第一凹槽35内，然后将第二光学镜片12卡接入基板31和两个侧板32的第二凹槽34内，与此同时，第一光学镜片13和第二光学镜片12两者远离基板31的一端相抵接，实现光学镜片的稳定安装。其次，在第一光学镜片13和第一凹槽35相卡接的位置、第二光 学镜片12和第二凹槽34相卡接的位置填充密封胶。最后，在第一光学镜片13和第二光学镜片12相抵接的位置填充密封胶。
作为一种可选地实施方式，基板31还包括从基板31上侧延伸出的具有容置腔的壳体311，壳体311的容置腔的底部连通透镜安装孔312，显示单元20安装于壳体311的容置腔内。在一实施例中，显示单元20包括显示屏21和固定架22；显示屏21用于出射图像光，固定架22用于固定显示屏21。显示屏21被固定架22包裹，使用者可以通过螺丝将固定架22锁固于容置腔内。另外，固定架22的一端盖住第三侧面312c与透镜40的间隙，另一端盖住第四侧面312d与透镜40的间隙，可以防止其余光线从第三侧面312c与透镜40的间隙，或者从第四侧面312d与透镜40的间隙进入光学镜片组件10中，干扰成像。在本实施例中，壳体311的顶部设有安装口，方便显示单元20通过壳体311的安装口装入，另外，安装口盖设有密封盖313。密封盖313可以通过螺丝与安装口相互配合安装，起到防尘作用。
而由于显示单元20一般都带有排线与其他电子元器件进行电连接，因此，在一实施例中，壳体311的侧壁设有排线口315。显示单元20安装进入容置腔后，其排线通过排线口315导出，与其他电子元器件连接。
作为一种可选地实施方式，本实施例基板31还可以包括一从基板31后侧向下延伸出的凸起部316，两个侧板32的后侧和凸起部316形成第二镜片安装部，基板31的第二凹槽34位于凸起部316上，该结构便于固定第二光学镜片12。请继续参阅图16，另外，为了防止图像光照射到凸起部316，从而产生杂散光射至光学镜片组件10，本实施例凸起部316朝向透镜40的一面设置有用于消除杂散光的凹陷结构，该凹陷结构至少包括一防光面316a，防光面316a朝上方倾斜布置，防止将图像光反射进入人眼，从而消除杂散光对图像的干扰和对人眼的影响。可选地，防光面316a也可以设置上述的吸光层或吸光结构，进一步地消除杂散光。
作为另一种可选地实施方式，透镜安装孔312的第一侧面312a设置有相互连接的第一部分以及第二部分，第一侧面312a为后侧面，第一部分与透镜相互配合安装连接，第二部分设置有用于消除杂散光的凹陷结构。第二部分的凹陷结构与凸起部的凹陷结构类似，同样起到消除杂散光的作用。
本实施例的光机装置，在单独使用时，可以实现单眼的增强现实效果或虚拟现实效果，在两个一起使用时，可以实现双眼的增强效果或虚拟现实效果。而为了使光机装置在两个一 起使用时效果更好，配合度更高。请参阅图17，本申请还提供一种用于头戴式显示设备的光机模组，其包括两个本实施例的光机装置，以及连接部50。两个光机装置沿连接部50对称设置，且通过连接部50连接。该连接部50起到连接两个光机装置的作用，其可以为一连接板件，此外，连接部50上可以设置有多个减重槽，实现光机模组的轻量化。该光机模组可以实现双目增强现实或双目虚拟现实的效果，且结构牢固。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对实用新型专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。

Claims (14)

  1. 一种用于头戴式显示设备的光机装置，其中，包括：
    光学镜片组件、显示单元、透镜以及用于安装所述光学镜片组件、显示单元和透镜的安装座；
    所述安装座上设有透镜安装孔，所述透镜安装孔的侧壁包括相对的第一侧面和第二侧面，以及相对的第三侧面和第四侧面；
    所述透镜装入所述透镜安装孔，所述第一侧面和第二侧面分别卡接于所述透镜的其中两侧，所述第三侧面与所述透镜之间形成间隙，所述第四侧面与所述透镜之间形成间隙；
    所述显示单元设置于所述透镜的上方，用于发出图像光射至所述透镜；所述光学镜片组件设置于所述透镜的下方，用于将经所述透镜透射的图像光传播至人眼。
  2. 根据权利要求1所述的光机装置，其中：
    所述第三侧面朝向上方倾斜布置，所述第四侧面朝向上方倾斜布置。
  3. 根据权利要求1所述的光机装置，其中：
    所述第三侧面朝向下方倾斜布置，所述第四侧面朝向下方倾斜布置。
  4. 根据权利要求1所述的光机装置，其中：
    所述光学镜片组件包括第一光学镜片和第二光学镜片；所述安装座包括基板以及分别从所述基板左右侧向下延伸的两个侧板；
    所述基板和两个侧板的前侧形成用于安装所述第一光学镜片的第一镜片安装部，所述基板和两个侧板的后侧形成用于安装所述第二光学镜片的第二镜片安装部；
    所述显示单元安装在所述基板上，所述透镜安装孔设置于所述基板上；所述显示单元发出的图像光穿过所述透镜后以第一角度投射到所述第二光学镜片并被所述第二光学镜片反射至所述第一光学镜片，所述第一光学镜片反射所述图像光至所述第二光学镜片，所述图像光以第二角度投射到所述第二光学镜片，并透射所述第二光学镜片。
  5. 根据权利要求4所述的光机装置，其中：所述基板还包括一从所述基板后侧向下延伸出的凸起部，所述两个侧板的后侧和所述凸起部形成所述第二镜片安装部。
  6. 根据权利要求5所述的光机装置，其中：所述凸起部朝向所述透镜的一面设置有用于消除杂散光的凹陷结构。
  7. 根据权利要求1所述的光机装置，其中：所述第三侧面、第四侧面的表面上均设有吸光层或吸光结构。
  8. 根据权利要求7所述的光机装置，其中：所述吸光结构为阵列分布的微结构，所述微结构包括三角形、平行四边形、梯形以及矩形中的至少一种结构。
  9. 根据权利要求7所述的光机装置，其中：所述吸光层包括吸光黑色涂层或吸光绒毛层。
  10. 根据权利要求4-6任一项所述的光机装置，其中：所述基板包括从所述基板上侧延伸出的具有容置腔的壳体，所述显示单元安装于所述容置腔内，所述容置腔的底部连通所述透镜安装孔。
  11. 根据权利要求10所述的光机装置，其中：所述显示单元包括显示屏和固定架；所述显示屏被所述固定架包裹；所述固定架的一端盖住所述第三侧面与透镜的间隙，另一端盖住所述第四侧面与透镜的间隙。
  12. 根据权利要求10所述的光机装置，其中：所述壳体的顶部设有安装口，所述安装口盖设有密封盖。
  13. 根据权利要求1所述的光机装置，其中：所述第一侧面设置有相互连接的第一部分以及第二部分，所述第一部分与所述透镜相互配合安装连接，所述第二部分设置有用于消除杂散光的凹陷结构。
  14. 一种用于头戴式显示设备的光机模组，其中，包括两个如权利要求1-13任一项所述的光机装置，以及连接部；两个所述光机装置沿所述连接部对称设置，且通过所述连接部连接。
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