CN218446139U

CN218446139U - Optical module and head-mounted display device

Info

Publication number: CN218446139U
Application number: CN202220772054.XU
Authority: CN
Inventors: 王小根
Original assignee: Guangzhou Shixiang Technology Co Ltd
Current assignee: Guangzhou Shixiang Technology Co Ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2023-02-03
Anticipated expiration: 2032-04-02

Abstract

The utility model provides an optical module and head-mounted display equipment, the optical module comprises a picture frame, a first lens, a second lens and an optical part; the first lens and the second lens are respectively fixed on the two opposite side surfaces of the frame in a sealing manner and form an accommodating cavity with the frame; the optical part comprises a prism, a waveguide sheet and a protective cover; the prism is fixedly connected with one side edge of the waveguide sheet; the side surface of the mirror frame is provided with a penetrating strip hole which is communicated with the accommodating cavity, and the waveguide sheet penetrates through the penetrating strip hole and is fixed in the accommodating cavity; the protective cover in on the prism, the protective cover with the picture frame is fixed each other. The utility model discloses can prevent the waveguide piece wearing and tearing among the optical module, the safety cover and the picture frame of setting have improved the waterproof dustproof performance and the resistant nature of falling of optical module.

Description

Optical module and head-mounted display device

Technical Field

The utility model belongs to a wear-type display device technical field, concretely relates to optical module and wear-type display device.

Background

Head-mounted display devices such as AR glasses or VR glasses have an optical assembly as a core component, which generally includes a bezel, lenses, and optical lenses. The optical assembly is arranged on a support of the head-mounted display equipment, the lens is fixed on the protective frame and forms an optical cavity with the protective frame in an enclosing mode, and the optical lens is arranged in the optical cavity. However, at present, the installation and sealing state of these components is poor, so that external contaminants easily enter the optical cavity, thereby affecting the use experience of the head-mounted display device.

SUMMERY OF THE UTILITY MODEL

The utility model discloses shortcoming and not enough among the prior art are overcome to the aim at, provide an optical module, can prevent the waveguide piece wearing and tearing among the optical module, and the safety cover and the picture frame of setting have improved optical module's waterproof dustproof performance and resistant falling nature.

The embodiment of the utility model provides a realize through following technical scheme:

an optical module comprises a frame, a first lens, a second lens and an optical part;

the first lens and the second lens are respectively fixed on the two opposite side surfaces of the picture frame in a sealing manner and form an accommodating cavity with the picture frame in an enclosing manner;

the optical part comprises a prism, a waveguide sheet and a protective cover; the prism is fixedly connected with one side edge of the waveguide sheet; a strip penetrating hole is formed in the side face of the mirror frame and communicated with the accommodating cavity, and the waveguide sheet penetrates through the strip penetrating hole and is fixed in the accommodating cavity; the safety cover in on the prism, the safety cover with the picture frame reciprocal anchorage.

An embodiment of the utility model provides an optical module, first lens, second lens and the picture frame forms the holding chamber, the waveguide piece holding in the holding chamber, the prism is fixed in the side of picture frame forms inclosed holding chamber, prevents that the waveguide piece from wearing and tearing, and safety cover and picture frame have improved optical module's waterproof dustproof performance and resistant falling nature.

For a better understanding and implementation, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic front view of an optical module according to embodiment 1 of the present invention.

Fig. 2 is a schematic back view of the optical module according to embodiment 1 of the present invention.

Fig. 3 is an exploded view of an optical module according to embodiment 1 of the present invention.

Fig. 4 is a schematic structural view of a spectacle frame according to embodiment 1 of the present invention.

Fig. 5 is a schematic view showing the installation of the prism and the waveguide sheet according to embodiment 1 of the present invention.

Fig. 6 is a front view schematically showing an optical module according to embodiment 1 of the present invention.

Fig. 7 is a sectional view taken along the direction C-C in fig. 6.

Fig. 8 is a schematic structural diagram of a head-mounted display device according to embodiment 2 of the present invention.

Fig. 9 is an exploded schematic view of a head-mounted display device according to embodiment 2 of the present invention.

Fig. 10 is a schematic view of connection between the holder and the optical module according to embodiment 2 of the present invention.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad embodiments of the invention. It should be further noted that, for convenience of description, only some structures, but not all structures, related to the embodiments of the present invention are shown in the drawings.

Furthermore, the terms first, second, third and the like in the description and in the claims, are used for descriptive purposes only to distinguish one element from another, and are not to be construed as indicating or implying relative importance or implying any order or order to the indicated elements. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Similarly, the terms "fixed" and "connected," as used in the description and claims, are not to be construed as limited to direct connection. Thus, the expression "device a is connected to device B" should not be limited to devices or systems in which device a is directly connected to device B, meaning that there is a path between device a and device B, which may be a path including other devices or tools.

Example 1

Embodiment 1 of the present invention provides an optical module, fig. 1 is a schematic front structure diagram of the optical module, fig. 2 is a schematic back structure diagram of the optical module, as shown in fig. 1 and fig. 2, the optical module 1 includes a frame 11, a first lens 12, a second lens 13, and an optical portion 14;

the first lens 12 and the second lens 13 are respectively fixed on two opposite side surfaces of the frame 11 in a sealing manner, and enclose with the frame 11 to form an accommodating cavity 114;

fig. 3 is an exploded view of the optical module, and as shown in fig. 1 and 3, the optical portion 14 includes a prism 141, a waveguide sheet 142, and a protective cover 143;

fig. 4 is a schematic structural view of the lens frame, fig. 5 is a schematic mounting view of the prism and the waveguide sheet, and as shown in fig. 3, 4 and 5, the prism 141 is fixedly connected to one side edge of the waveguide sheet 142; the side surface of the lens frame 11 is provided with a penetrating bar hole 111, the penetrating bar hole 111 is communicated with the accommodating cavity 114, and the waveguide sheet 142 penetrates through the penetrating bar hole 111 and is fixed in the accommodating cavity 114; the protective cover 143 covers the prism 141, and the protective cover 143 and the frame 11 are fixed to each other.

The embodiment 1 of the utility model provides an optical module 1, first lens 12, second lens 13 and picture frame 11 form holding chamber 114, and waveguide piece 142 holding is in holding chamber 114, and prism 141 is fixed in the side of picture frame 11, forms inclosed holding chamber 114, prevents that waveguide piece 142 from wearing and tearing, and safety cover 143 and picture frame 11 have improved optical module 1's waterproof and dustproof performance and resistant falling nature.

Preferably, as shown in fig. 4, the frame 11 comprises a frame body 112;

the frame body 112 and the adhesive frame 113 are frame-shaped structures with matched shapes, and the frame body 11 is sleeved outside the adhesive frame 113;

the first lens 12 and the second lens 13 have a shape matching with the frame 112, and the first lens 12 and the second lens 13 are respectively glued and sealed with the frame 112. The first lens 12 and the second lens 13 are glued with the frame 112 to be fixed stably and connected with the frame 11 to form a containing cavity; the first lens 12 and the second lens 13 can be fixed by dispensing.

As an alternative embodiment, in this embodiment, the first lens 12 is a far-vision lens, and the second lens 13 is a near-vision lens, and the near-vision lens is disposed on a side close to the human eye. The near vision lens and the far vision lens are advantageous for improving the display definition of the waveguide sheet 142. The light rays penetrating from the outside are firstly transmitted into the human eyes through the far vision lens, the waveguide sheet and the near vision lens, and the near vision lens and the far vision lens adopt the mutually matched power setting, such as-100 degrees and +100 degrees, so that the outside light rays entering the human eyes cannot be changed after being mutually corrected through the near vision lens and the far vision lens. However, the light emitted by the waveguide sheet is emitted into human eyes only through the myopia lens, and the image emitted by the waveguide sheet is clearer when a user watches the myopia lens because the value of the degree of the myopia lens is smaller.

Fig. 6 is a schematic front view of the real optical module, fig. 7 is a sectional view taken along the direction C-C in fig. 6, and as shown in fig. 6 and 7, a surface of one side of the frame body 112 adjacent to the prism 141 is provided with a stopper strip 115; the stop strip 115 comprises a fixedly connected and mutually perpendicular plug portion 1155 and a blocking portion 1156, the plug portion 1155 is located between the first lens 12 and the waveguide sheet 142, the blocking portion 1156 is located between the first lens 12 and the prism 141, and one side of the blocking portion 1156 abuts against the side surface of the first lens 12; the protective cover 143 covers the prism 112 and the blocking portion 1156, and abuts against the blocking portion 1156 on the side close to the first lens 12. When the protective cover 143 covers the prism 112, the edge thereof abuts against the stopper 1156 side of the stopper 115, and at this time, the stopper 115 limits the protective cover 143, thereby preventing the protective cover 143 from moving excessively and damaging the prism 112.

Example 2

Embodiment 2 of the present invention provides a head-mounted display device, and fig. 8 is a schematic structural diagram of a head-mounted display device, where the head-mounted display device includes a bracket 2, a lens portion (not shown), and an optical module 1 according to embodiment 1 of the present invention;

the lens portion and the optical module 1 are respectively fixed at two ends of the bracket 2 and located on the same side surface of the bracket 2, wherein the protection cover 143 of the optical module 1 is located at the bracket 2 and is far away from one end of the lens portion.

As an alternative embodiment, fig. 9 is an exploded schematic view of a head mounted display device, as shown in fig. 8 and 9, further comprising a light shield 4; the lens hood 4 is covered on the optical module 1 and the lens part;

fig. 10 is a schematic connection diagram of the bracket and the optical module, the bracket 2 and/or the protective cover 4 of the optical module 1 are provided with a plurality of first magnetic members 1433, the light shielding cover 4 is provided with a plurality of second magnetic members (not shown) at positions corresponding to the first magnetic members 1433, and each second magnetic member is magnetically fixed to one first magnetic member 1433. The lens hood 4 is fixed with the optical module 1 magnetism, the stability of connection is strengthened, and the dismouting is easy and simple to handle.

One end of the light shield 4 is fitted and fixed to the protective cover 143 of the optical module 1. The light shield 4 is fixed to the protective cover 143 in an embedded manner, so that the light shield 4 can be quickly positioned and then fixed to the protective cover 143 and/or the bracket 2 by magnetic attraction.

As shown in fig. 2, 3 and 5, the optical module 1 further includes a connecting body 15 and a fixing member 16; the connecting body 15 is fixed on one side of the spectacle frame 11, and the connecting body 15 is provided with a fixing hole 151; the fixing member 16 passes through the fixing hole 151 and is fixed to the protection cover 143; the fixing member 16 is located at an end of the lens frame 11 of the optical module 1 away from the lens hood 4. The fixing piece 16 fixedly connects the frame 11 and the protection cover 143, and the fixing piece 16 is located at one end of the frame 11 of the optical module 1 far away from the light shield 4, is located at one side close to the eyes of the user when the user uses the lens, and is hidden at the inner side of the head-mounted display device, so that the attractiveness is improved.

The lens portion comprises a myopic lens; alternatively, as an alternative embodiment, the lens portion has the same structure as the optical module 1 of example 1, and is used in cooperation with the optical module 1, so that the feeling of use can be further improved.

As an alternative implementation manner, in this embodiment 2, the head-mounted display device further includes a nose pad (not shown) and two temples 6;

the nose support is fixed on the bracket 2 and is positioned between the optical module 1 and the lens part;

the two temples 6 are fixed to both ends of the holder 2, respectively, and extend in a direction away from the optical module 1. The nose holds in the palm and is used for making head mounted display device fix in user's nose firmly, and mirror leg 6 is used for erectting on user's ear and makes head mounted display device wear firmly.

Embodiments of the present invention are not limited to the above-described embodiments, and if various modifications or variations to the embodiments of the present invention do not depart from the spirit and scope of the embodiments of the present invention, if these modifications and variations fall within the scope of the claims and equivalent technical scope of the embodiments of the present invention, then the embodiments of the present invention are also intended to include these modifications and variations.

Claims

1. An optical module, comprising:

comprises a frame, a first lens, a second lens and an optical part;

the first lens and the second lens are respectively fixed on the two opposite side surfaces of the frame in a sealing manner and form an accommodating cavity with the frame;

the optical part comprises a prism, a waveguide sheet and a protective cover;

the prism is fixedly connected with one side edge of the waveguide sheet; the side surface of the mirror frame is provided with a penetrating strip hole which is communicated with the accommodating cavity, and the waveguide sheet penetrates through the penetrating strip hole and is fixed in the accommodating cavity; the protective cover in on the prism, the protective cover with the picture frame is fixed each other.

2. The optical module of claim 1, wherein:

the frame body comprises a frame body;

the first lens and the second lens are in a shape matched with the frame body, and the first lens and the second lens are respectively glued and sealed and fixed with the frame body.

3. The optical module of claim 2, wherein:

the first lens is a far-vision lens, the second lens is a near-vision lens, and the near-vision lens is close to one side of the eyes of a person.

4. The optical module of claim 2, wherein:

a spigot strip is arranged on the surface of one side of the frame body, which is close to the prism; the spigot strip comprises an inserting part and a blocking part which are fixedly connected and are perpendicular to each other, the inserting part is positioned between the first lens and the waveguide sheet, the blocking part is positioned between the first lens and the prism, and one side of the blocking part is abutted against the side surface of the first lens; the protective cover is covered on the prism and the blocking part and is abutted against one side of the blocking part close to the first lens.

5. A head-mounted display device, characterized in that:

comprising a frame, a lens portion and an optical module according to any one of claims 1 to 4;

the lens portion with the optical module is fixed in respectively the both ends of support just are located the same side surface of support, wherein the safety cover of optical module is located the support is kept away from the one end of lens portion.

6. The head-mounted display device of claim 5, wherein:

the light shield is also included; the lens shade is arranged on the optical module and the lens part;

the support and/or the safety cover of optical module is provided with a plurality of first magnetic parts, the position department that the lens hood corresponds first magnetic part is provided with a plurality of second magnetic parts, each second magnetic part magnetism is inhaled and is fixed in one first magnetic part.

7. The head-mounted display device of claim 6, wherein:

one end of the light shield is embedded and fixed with the protective cover of the optical module.

8. The head-mounted display device of claim 6, wherein:

the optical module further comprises a connecting body and a fixing piece, the connecting body is fixed on one side of the mirror frame, and the connecting body is provided with a fixing hole; the protective cover of the optical module further comprises a fixing piece, and the fixing piece penetrates through the fixing hole and is fixed to the protective cover; the connecting body and the fixing piece are located at one end, far away from the light shield, of the lens frame of the optical module.

9. The head-mounted display device of claim 5, wherein:

the lens portion comprises a myopic lens; or the lens portion has the same structure as the optical module according to any one of claims 1 to 4.

10. A head-mounted display device as recited in any of claims 5-9, wherein:

the glasses also comprise a nose support and two glasses legs;

the nose support is fixed on the bracket and positioned between the optical module and the lens part;

the two glasses legs are respectively fixed at two ends of the support and extend towards the direction far away from the optical module.