CN116068766A - Optical module and wearable equipment - Google Patents

Abstract

The embodiment of the application provides an optical module and wearable equipment; the optical module comprises a lens group, a lens cone, a first sealing piece and a second sealing piece; the lens group comprises a first lens and a myopia lens, wherein the first lens and the myopia lens are both trimming lenses, and the first lens and the myopia lens are provided with at least one lens trimming; a gland is arranged at one end of the lens cone, the myopia lens is arranged in the gland, the side part of the gland is provided with a side edge matched with the side edge of the lens of the myopia lens, the lens cone is provided with an inner cavity, the first lens is arranged in the inner cavity, and the side wall of the lens cone is provided with a longitudinal section matched with the side edge of the lens of the first lens; the first sealing member is located between the myopia lens and the gland, and the second sealing member is located between the gland and the lens barrel. The scheme provided by the embodiment of the application can improve the sealing performance of the optical module so as to protect the optical element in the lens cone.

Description

Optical module and wearable equipment

Technical Field

The embodiment of the application relates to the technical field of optical imaging, and more particularly relates to an optical module and a wearable device.

Background

Virtual Reality (VR), also known as the smart technology, is a brand new practical technology developed in the 20 th century. The virtual reality technology comprises a computer, electronic information and simulation technology, and the basic implementation mode is that the computer simulates a virtual environment so as to bring the sense of environmental immersion to people. Nowadays, the requirements of consumers on VR products and user experience are higher and higher, and especially, consumers are not allowed to have any impurity points in pictures when experiencing VR products, which requires that the seal design be considered in product design.

The sealing structures used at present usually reduce the assembly gap of the structural member itself as much as possible during design. Although the sealing function can be achieved to a certain extent, the structural member has tolerance, and particularly the plastic member can be subjected to physical properties of thermal expansion and cold contraction, so that the dimensional stability and uniformity of the structural member are difficult to ensure in the manufacturing process. If the sealing is unreasonable, repeated die repair and die change are caused, and the cost and time investment are large.

Disclosure of Invention

The purpose of this application is to provide a new technical scheme of optical module and wearable equipment, can play good sealed effect to the irregular lens-barrel of side cut lens to the inside optical element of protection.

In a first aspect, the present application provides an optical module. The optical module includes:

the lens group comprises at least a first lens and a myopia lens, wherein the first lens and the myopia lens are both provided with edge cutting lenses, and the first lens and the myopia lens are both provided with at least one lens edge cutting;

the lens holder comprises a lens barrel, wherein one end of the lens barrel is provided with a gland, a myopic lens is arranged in the gland, the side part of the gland is provided with a side edge matched with a lens side edge of the myopic lens, the lens barrel is provided with an inner cavity, a first lens is arranged in the inner cavity, and the side wall of the lens barrel is provided with a longitudinal section matched with the lens side edge of the first lens; the method comprises the steps of,

a first seal and a second seal, the first seal being located between the myopic lens and the gland, the second seal being located between the gland and the barrel.

Optionally, the first seal is disposed within a first gap formed between the myopic lens and the gland;

the first sealing piece and the first gap are in tight fit or interference fit, the first sealing piece is flush with the myopia lens and the top end of the gland, and the first sealing piece is used for sealing off the first gap.

Optionally, the first sealing element is a closed ring body, and surrounds the outer peripheral side of the myopia lens and is matched with the edge profile of the myopia lens, and the first sealing element comprises a first cutting section matched with the lens trimming of the myopia lens.

Optionally, be provided with on the gland be used for holding the lens mounting hole of myopia lens and encircle the first mounting groove that the pore wall of lens mounting hole set up, first sealing member pressfitting is in the first mounting groove.

Optionally, the first mounting groove includes at least a first mounting section and a second mounting section, the first mounting section corresponds to a lens trimming edge of the near vision lens, and the second mounting section corresponds to a circular arc edge of the near vision lens.

Optionally, the optical module further includes an eye tracking assembly, the eye tracking assembly is disposed on one side of the gland and located in the inner cavity, the eye tracking assembly, the gland and a side wall of the lens barrel enclose a second gap, and the second sealing element is embedded in the second gap.

Optionally, the second sealing member and the second gap are provided as a tight fit or an interference fit, and the second sealing member is used for sealing the second gap.

Optionally, the eye tracking assembly includes a first bracket and an eye tracking device disposed on the first bracket;

the first bracket is of a closed annular structure, and the side edge of the first bracket is provided with a bracket trimming matched with the longitudinal section of the lens barrel;

the edge of the first support is provided with a second mounting groove along the circumferential direction, the second sealing piece is pressed into the second mounting groove, and the second sealing piece comprises a second trimming section matched with the trimming of the support.

Optionally, at least one of the first sealing member and the second sealing member is made of nitrile rubber.

Optionally, the optical module further includes a second lens and a third lens, where both the second lens and the third lens are cut-edge lenses;

the first lens, the second lens and the third lens are arranged in the inner cavity along the axial direction of the lens barrel at intervals, the lens trimming edges of the lenses are corresponding, and the first lens, the second lens and the third lens are positioned on the same optical axis.

Optionally, the myopia lens is detachably connected to the gland, and the myopia lens is configured to be replaceable according to the user's vision to match the target user's vision.

Optionally, the optical module further comprises a display screen and a second bracket, and the display screen is adhered and fixed in the second bracket;

and a rear cover is arranged at one end of the lens barrel, which is far away from the gland, and the second bracket is connected with the rear cover.

In a second aspect, the present application provides a wearable device comprising:

a housing; and

the optical module of the first aspect, wherein the optical module is disposed on the housing.

Optionally, the shell is a glasses frame, and two glasses frames are arranged on the glasses frame; the optical modules are arranged in two, and the two optical modules are arranged in the two mirror frames.

The beneficial effects of this application lie in:

according to the embodiment of the application, the two sealing elements are introduced and are respectively used for sealing the gap between the myopia lens and the gland and the gap between the gland and the lens cone, so that the tightness of the lens cone can be better improved; by introducing the myopia lens, the optical module can be matched with the vision of the target object, so that people with different vision can use the optical module; moreover, the lenses in the optical module are all arranged as edge trimming lenses with irregular shapes, and the assembly precision requirement of the sealing design in the application is not high, but the very good sealing effect can be realized.

Other features of the present specification and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description, serve to explain the principles of the specification.

Fig. 1 is a schematic structural diagram of an optical module according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of an optical module provided in an embodiment of the present application;

FIG. 3 is an enlarged schematic view of the mounting location of a second seal provided in an embodiment of the present application;

FIG. 4 is a top view of an optical module according to an embodiment of the present disclosure;

FIG. 5 is a mounting position diagram of a first seal provided in an embodiment of the present application mounted at a gland;

FIG. 6 is a schematic view of the mounting relationship of a first seal, gland and near vision lens provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of the mounting relationship of a second seal, gland and eye tracking assembly according to an embodiment of the present disclosure;

FIG. 8 is a diagram of the mounting position of a second seal at a second mount provided in an embodiment of the present application;

FIG. 9 is a schematic structural view of a first seal provided in an embodiment of the present application;

FIG. 10 is a second schematic structural view of a first seal according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural view of a second seal provided in an embodiment of the present application;

fig. 12 is a second schematic structural view of a second seal member according to an embodiment of the present application.

Reference numerals illustrate:

1. a first lens; 2. a second lens; 3. a third lens; 4. a myopic lens; 5. a display screen; 6. a lens barrel; 601. longitudinal section; 7. a gland; 701. a trimming side; 702. a first mounting groove; 8. a rear cover; 9. an eye tracking assembly; 901. a first bracket; 9011. a second mounting groove; 10. a second bracket; 11. a first seal; 1101. a first cut-out section; 12. a second seal; 1201. and a second trimming section.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

According to one aspect of embodiments of the present application, an optical module is provided that is suitable for application to a head mounted display device (Head mounted display, HMD), such as a VR head mounted display device. The VR headset may include, for example, VR glasses or VR helmets, which are not specifically limited in this embodiment of the present application.

In the VR product design, taking VR glasses as an example, in order to make the product avoid the nose bridge, the eyebrow and other areas of the user, the trimming treatment can be performed on the lenses applied in the optical module, so that the lenses form a non-whole circular structure, and the corresponding lens barrel also forms a non-whole circular shape. The edge cutting lens is irregularly shaped.

The assembly of VR products is usually performed in a dust-free workshop, and has strict requirements on dust particles, so as to prevent dust particles entering the lens barrel from falling on a display screen or a lens, so that user experience is affected, and vision ambiguity is caused, which requires that VR products should consider sealing structures in design. For the lens barrel of the large trimming lens, the sealing is difficult to realize and the required precision is high because the appearance of the lens barrel is irregular.

Referring to fig. 1 to 4, the optical module provided in the embodiment of the present application includes a lens group, a lens barrel 6, a first sealing member 11, and a second sealing member 12; the lens group comprises at least a first lens 1 and a near-sighted lens 4, wherein the first lens 1 and the near-sighted lens 4 are both arranged as trimming lenses, and the first lens 1 and the near-sighted lens 4 are both provided with at least one lens trimming; one end of the lens cone 6 is provided with a gland 7, the myopia lens 4 is arranged in the gland 7, the side part of the gland 7 is provided with a trimming side 701 matched with the trimming of the myopia lens 4, the lens cone 6 is provided with an inner cavity, the first lens 1 is arranged in the inner cavity, and the side wall of the lens cone 6 is provided with a longitudinal section 601 matched with the trimming of the first lens 1; the first seal 11 is located between the near vision lens 4 and the gland 7, and the second seal 12 is located between the gland 7 and the barrel 6.

In the optical module provided in the above embodiment, based on the specially designed myopia lens 4 provided on the lens barrel 6, diopter adjustment of the optical module can be realized, and the diopter adjustment can be used for matching the diopter of the target object, and the design is beneficial to enabling the user to still watch clear images without wearing glasses, so that the optical module is applicable to people with different diopters, and the application range is wider.

According to the optical module set forth in the embodiment of the present application, two sealing structures, namely the first sealing element 11 and the second sealing element 12 are introduced, wherein the first sealing element 11 is disposed between the near-sighted lens 4 and the gland 7, and can be used for blocking a gap between the two sealing structures, so that a sealing structure is formed at the top end of the lens barrel 6; the second sealing member 12 is disposed between the connection positions of the gland 7 and the lens barrel 6, and can seal the gap between the gland 7 and the lens barrel 6, so as to form a sealing structure again for the connection positions of the lens barrel 6 and the gland 7. The lens barrel 6 can have good sealing property by the two sealing structures.

The first sealing element 11 is directly placed between the myopia lens 4 and the gland 7, the second sealing element 12 is directly placed between the gland 7 and the lens cone 6, and the sealing element structure is only required to be made on related structural parts, so that the requirement on precision is not high, and the cost is not increased.

According to the sealing design scheme provided by the embodiment of the application, the first sealing piece 11 and the second sealing piece 12 are matched with each other, so that the sealing design scheme can be used in the lens cone 6 with the trimming lens, the assembly precision requirement is low, the effective sealing of the lens cone 6 with the trimming lens can be realized, the quality of a product can be greatly improved, and the product yield is improved. Because the tightness of the lens cone 6 is good, particles such as dust can not be introduced to fall on the lens and the display screen, so that clear images can be seen by a user, and the user experience can be improved.

The optical module sealing scheme provided by the embodiment of the application is particularly suitable for the lens barrel of the large-trimming lens, is applicable to the conventional lens barrel of the round lens, and is wide in application range and high in universality.

The optical module provided in this embodiment is installed on the end portion of the lens barrel or the lens in the inner cavity of the lens barrel, for example, the near-sighted lens 4 and the first lens 1 in the above embodiment are all cut-edge lenses, and these lenses are not in a conventional circular structure, but are in a non-circular structure or other irregular structures, so that the corresponding lens barrel 6 is in a non-circular structure or other irregular structures with a shape adapted to the lens. The design mainly considers the problem that the traditional circular structure interferes with the nose bridge of the human body, and the formed product can well avoid the nose bridge area, so that the wearing comfort of a user is improved.

In addition, considering the problem of different interpupillary distances of different people, in order to ensure that most people can use the optical module, that is, improve the universality of the optical module, the optical module is designed according to the minimum interpupillary distance, which is also one of the reasons for using the trimming lens.

The optical module provided in the embodiments of the present application includes, for example, a lens set including at least a first lens 1 and a near-sighted lens 4. In particular, referring to fig. 1 and 2, the optical module may be a combination of a first lens 1 and a myopic lens 4; the first lens 1 is mainly used for imaging, the near-sighted lens 4 can be used for adjusting the visibility of an optical module, and meanwhile, high-quality and clear imaging can be realized by matching with the first lens 1. Wherein, the first lens 1 and the near vision lens 4 are both, for example, edge-cut lenses. In addition, optical elements such as a beam splitting element, a phase retarder, a polarization reflecting element and the like can be further arranged in the whole optical module, so that the whole optical module forms a folded light path (path) structure.

Specifically, the optical module comprises two optical lenses, namely a first lens 1 and a near-sighted lens 4, on the basis, the optical module further comprises a light splitting element, a phase retarder and a polarization reflecting element, wherein the optical elements (optical films) can be arranged at any proper position between the first lens 1 and the near-sighted lens 4, or at proper positions or any sides of the two sides of the first lens 1, so that the whole optical module forms a folding light path, imaged light rays are folded back between the formed folding light paths, the propagation path of the light rays can be prolonged, and the final clear imaging is facilitated.

In the optical module of the embodiment of the present application, the number of lenses includes, but is not limited to, one of the above, and the number of lenses may be flexibly adjusted according to specific needs. Along with the increase of the number of lenses, although the imaging quality of the optical module can be improved, the size of the optical module along the optical axis direction (transverse direction) can be affected, so that the volume and the weight of the optical module are increased.

The light splitting element is, for example, a semi-transparent and semi-reflective device, and is capable of transmitting a part of light and reflecting another part of light. The reflectance of the spectroscopic element is, for example, 47% to 53%.

Wherein the phase retarder is for example a quarter wave plate. Of course, the phase retarder described herein may also be provided as other phase retarders such as half wave plates, etc., as desired. The phase retarder may be used to change the polarization state of light. For example for converting linearly polarized light into circularly polarized light or circularly polarized light into linearly polarized light.

The polarizing reflection element is a polarizing reflector for reflecting horizontal linearly polarized light and transmitting vertical linearly polarized light, or any other polarizing reflector for reflecting linearly polarized light with a specific angle and transmitting linearly polarized light with a direction perpendicular to the angle.

In embodiments of the present application, the phase retarder, in conjunction with both the polarizing reflective elements, can be used to resolve and transmit light.

The light splitting element, the phase retarder and the polarization reflecting element are flexibly arranged in the lens group, and can be arranged on any side of the first lens 1 or on two sides according to the requirement, for example, but the phase retarder needs to be arranged between the light splitting element and the polarization reflecting element.

In some examples of the present application, referring to fig. 1, 5 and 6, the first sealing member 11 is disposed in a first gap formed between the myopia lens 4 and the gland 7, the first sealing member 11 is disposed in a tight fit or an interference fit with the first gap, the first sealing member 11 is flush with the top ends of the myopia lens 4 and the gland 7, and the first sealing member 11 is used for sealing the first gap.

The first sealing member 11 may be installed between the outer circumferential side of the myopia lens 4 and the pressing cover 7 along the edge profile of the myopia lens 4, so that a first gap formed by assembling the myopia lens 4 on the pressing cover 7 may be completely blocked, thereby improving the sealability of the lens barrel 6.

The reason why a gap is formed between the gland 7 and the near vision lens 4 is that: the myopia lens 4 is designed to be replaced according to the vision requirements of the user, and the myopia lens 4 is not normally fixed in the gland 7 by adhesive bonding, so that an assembling gap is inevitably formed during assembling, and the first sealing member 11 can just seal the gap. When the gap exists, when the optical module is assembled or used, external dust, impurities and other particles may enter the inner cavity of the lens barrel 6 through the gap, and when the dust falls on the lens or the display screen, the imaging definition is affected. Therefore, it is necessary to seal the gap.

Wherein, the first sealing member 11 is disposed in a first gap between the near-sighted lens 4 and the pressing cover 7, and is matched with the near-sighted lens 4 and the pressing cover 7 to form zero gap, and even can form interference fit. The first sealing element 11 is flush with the top ends of the myopia lens 4 and the gland 7, so that tight packaging is formed between the first sealing element 11 and the myopia lens 4 and between the first sealing element and the gland 7, and a complete sealing effect is achieved.

In the above example, the first sealing member 11 is, for example, a closed ring, the first sealing member 11 surrounds the outer peripheral side of the near vision lens 4 and is configured to adapt to the edge contour of the near vision lens 4, and the first sealing member 11 includes a first cutting section 1101 adapted to the lens cutting edge of the near vision lens 4, see fig. 9 and 10.

Wherein the first sealing element 11 is for example a sealing ring, which is adapted to the contour of the near vision lens 4. When the first seal 11 is sleeved outside the myopic lens 4, the first cut 1101 on the first seal 11 should be located outside the lens cut of the myopic lens 4.

The myopic lens 4 further has a non-lens edge, that is, an original circular arc edge, and the corresponding first sealing member 11 also has a circular arc section matching the non-lens edge. By adapting the design of the first seal 11 to the myopia lens 4, the gap between the myopia lens 4 and the gland 7 can be better and more completely blocked. No complex assembly relationship is required when sealing is achieved, and the first sealing member 11 is directly placed at a corresponding position.

Optionally, the gland 7 is provided with a lens mounting hole for accommodating the near vision lens 4 and a first mounting groove 702 surrounding the hole wall of the lens mounting hole, and the first sealing element 11 is pressed in the first mounting groove 702.

In this case, a structural groove, i.e., the first mounting groove 702 described above, which is provided exclusively for accommodating the first seal 11, is formed in the gland 7, which facilitates the mounting and positioning of the first seal 11.

Wherein the shape of the lens mounting hole is designed to be adapted to the shape of the myopia lens 4 so as to accommodate the myopia lens 4.

The lens barrel 6 is, for example, a hollow column structure having opposite ends such as a first end and a second end. On the basis of this, the lens mounting hole is located at, for example, one end, such as the first end, of the lens barrel 6, and the myopia lens 4 is fitted to the first end of the lens barrel 6 to define the setting position of the myopia lens 4.

For example, when the optical module is in the use state, the first end of the lens barrel 6 is close to the human eye, and the near-sighted lens 4 is close to the human eye, so that the optical module can be used as near-sighted glasses, and the visibility of the optical module can be adjusted to match the visibility of the user. When the visibility of the myopia lens 4 is matched with the visibility of the target object (user), the target object (user) can see a clear picture without glasses.

Wherein the myopia lens 4 is detachably connected with the gland 7, and the myopia lens 4 is configured to be replaceable according to the vision of the user so as to match the vision of the target user.

Specifically, the near-sighted lens 4 is detachably disposed in a lens mounting hole on the pressing cover 7, and when the optical module is used, a user can select a proper vision degree according to his vision degree condition in advance to place the near-sighted lens 4 in the lens mounting hole for use.

Optionally, in order to enable the optical module to fix the near-sighted lens 4 in a use state, the near-sighted lens 4 may be designed to be disposed in the lens mounting hole in a magnetic attraction manner, so that the near-sighted lens 4 is not easy to fall off.

Wherein the first mounting groove 702 comprises at least a first mounting section and a second mounting section; wherein the first mounting section corresponds to a lens trimming of the near vision lens 4, and the second mounting section corresponds to a circular arc edge of the near vision lens 4.

In order to ensure that the first sealing member 11 is perfectly matched with the first mounting groove 702, the first mounting groove 702 for accommodating the first sealing member 11 is also designed to have a special-shaped structure with a cut edge.

The shape of the first mounting groove 702 is matched with the shape of the near vision lens 4, so that the first sealing element 11 matched with the shape of the near vision lens 4 can be completely pressed into the first mounting groove 702.

Alternatively, the first mounting groove 702 has a rectangular cross-sectional shape.

For example, for the first mounting groove 702, referring to fig. 5, the groove width dimension a is set to 1mm, the heights of both sides of the groove are different, the groove height B1 on the side close to the near vision lens 4 is 0.2mm, and the groove height B2 on the side far from the near vision lens 4 is 1.8mm. At the same time, to ensure sufficient strength at the first mounting groove 702 on the gland 7, the wall thickness of the side portion of the gland 7 should be not less than 0.6mm, such as 0.6mm.

In some examples of the present application, referring to fig. 1, 3, 7 and 8, the optical module further includes an eye tracking assembly 9, the eye tracking assembly 9 is disposed on one side of the gland 7 and is located in the inner cavity, the eye tracking assembly 9, the gland 7 and the side wall of the lens barrel 6 enclose a second gap, and the second sealing member 12 is disposed in the second gap.

When the eye tracking assembly 9 is introduced into the optical module, a gap, i.e. the above-mentioned second gap, is formed at the connection position between the gland 7 and the eye tracking assembly 9 and the lens barrel 6 due to the consideration of structural design, and the second gap is also at risk of entering particles such as dust. In this second gap, a second seal 12 is therefore provided for blocking, see fig. 7 and 8.

Optionally, the second sealing member 12 is disposed in a tight fit or an interference fit with the second gap, and the second sealing member 12 is configured to seal the second gap.

Wherein, the eye tracking assembly 9 comprises a first bracket 901 and an eye tracking device arranged on the first bracket 901; the first bracket 901 is of a closed ring structure, the side edge of the first bracket 901 is provided with a bracket trimming adapted to the longitudinal section 601 of the lens barrel 6, the edge of the first bracket 901 is provided with a second mounting groove 9011 along the circumferential direction, the second sealing element 12 is pressed in the second mounting groove 9011, and the second sealing element 12 is provided with a second trimming section 1201 adapted to the bracket trimming.

The structure of the second sealing member 12, see fig. 11 and 12, is adapted to the shape of the lens barrel 6, and is also a special-shaped structure.

In order to adapt the longitudinal section 601 of the lens barrel 6, the first support 901 for supporting the eye tracking device is designed with a support cut adapted to the longitudinal section 601, and of course, the first support 901 also has a circular arc edge and encloses a closed loop together with the support cut.

For example, referring to fig. 3 and 7, the second sealing member 12 is a sealing ring, the second sealing member 12 is designed to be sleeved outside the lower end of the first bracket 901, and the second sealing member 12 is a profile matching the shape of the first bracket 901, so that the second sealing member 12 also has a trimming side, that is, the second trimming section 1201.

Specifically, a ring groove is designed on the first bracket 901 for supporting the eye tracking device as a second mounting groove 9011, a dimension of a width C of the second mounting groove 9011 is, for example, 0.8mm, and a dimension of a height D of the second mounting groove 9011 is, for example, 1mm, as shown in fig. 8.

The second sealing member 12 is mounted in the second mounting groove 9011 provided in the first bracket 901, and the gland 7 is tightly fitted with the second sealing member 12 without a gap, as shown in fig. 7.

The second seal 12 has a shaped structure and a rectangular cross section, and the structure is shown in fig. 11 and 12. The second seal 12 may be used in an optical module with a cut-edge lens.

The optical module can be applied to VR equipment. Specifically, in order to implement a specific function, the VR device needs to track the eyeball of the user, and when performing eyeball tracking, an image including the eye of the user may be captured by a camera with a larger field of view, so as to further track the eyeball of the user.

In the above example, the eye tracking assembly 9 and the near vision lens 4 are disposed at the end of the lens barrel 6 near the human eye, so that the eye tracking assembly 9 is as close to the human eye as possible, which is beneficial to improving the accuracy of eye tracking.

The eye tracking device comprises an infrared light source, an eye movement tracking camera and the like.

The first sealing member 11 and the second sealing member 12 may be made of a rubber material.

In some examples of the present application, the material of the first seal 11 and the second seal 12 is nitrile rubber.

Nitrile rubber is one of the most representative rubbers among excellent properties such as oil resistance, physical and mechanical properties, chemical resistance and the like, and various uses can be satisfied by effectively utilizing these properties.

Preferably, the first seal 11 and the second seal 12 are both nitrile rubber.

In some examples of the present application, the optical module further comprises a second lens 2 and a third lens 3, wherein the second lens 2 and the third lens 3 are both configured as a trimming lens;

the first lens 1, the second lens 2 and the third lens 3 are arranged in the inner cavity along the axial direction of the lens barrel 6 at intervals, the lens trimming edges of the lenses are corresponding, and the first lens 1, the second lens 2 and the third lens 3 are positioned on the same optical axis.

It should be noted that the lens barrel 6 is not limited to the first lens 1, and may include two or more lenses, such as the second lens 2 and the third lens 3.

When a plurality of lenses are arranged in the optical module, all the lenses can be trimming lenses, so that trimming of the lenses is ensured to be corresponding when the optical module is assembled.

Because each lens is non-circular structure for the lens cone 6 that bears these lenses also corresponding is designed into non-full circle structure, can realize dodging user's bridge of the nose region or the area of brow in the appearance, do benefit to the product appearance optimal design of VR equipment such as VR intelligent glasses.

In addition, the first lens 1, the second lens 2 and the third lens 3 are disposed at intervals, and specific intervals thereof can be adjusted according to actual needs, which is not limited in the embodiment of the present application.

In some examples of the present application, referring to fig. 2, the optical module further includes a display screen 5 and a second bracket 10, where the display screen 5 is adhesively fixed in the second bracket 10; the end of the lens barrel 6 far away from the gland 7 is provided with a rear cover 8, and the second bracket 10 is connected with the rear cover 8.

The display screen 5 is used for emitting imaging light, the display screen 5 is supported by a second specially designed bracket 10, the second bracket 10 is connected with the rear cover 8, and the second bracket 10 and the display screen 5 are located in the inner cavity of the lens cone 6. The display screen 5 and the third lens 3 are arranged at intervals.

In a specific example of the present application, referring to fig. 1 and 2, the optical module includes a first lens 1, a second lens 2, a third lens 3, and a near-sighted lens 4, where each lens is a trimming lens and is located on the same optical axis, and lens trimming of all lenses corresponds to each other;

the optical module further comprises a lens barrel 6, a first sealing member 11 and a second sealing member 12; one end of the 5 lens cone 6 is provided with a gland 7, the myopia lens 4 is detachably arranged in the gland 7,

and is configured to be replaceable according to the user's visibility to match the target user's visibility; the side of the gland 7 has a cut side 701 adapted to the lens cut of the myopic lens 4;

the side wall of the lens cone 6 is provided with a longitudinal section 601, the lens cone 6 is provided with an inner cavity, and the first lens 1, the second lens 2 and the third lens 3 are arranged in the inner cavity at intervals; 0 the first seal 11 is located between the myopic lens 4 and the gland 7, and the second seal 12 is located between the gland 7 and the barrel 6;

the first sealing element 11 is arranged in a first gap formed between the myopia lens 4 and the gland 7, the first sealing element 11 is a closed ring body, the first sealing element 11 surrounds the periphery side of the myopia lens 4 and is matched with the edge profile of the myopia lens 4, 5 the first sealing element 11 is provided with a first cutting section 1101 matched with the lens trimming of the myopia lens 4, the first sealing element 11 is in interference fit with the first gap, the first sealing element 11 is flush with the top ends of the myopia lens 4 and the gland 7, and the first sealing element 11 is used for sealing the first gap;

the gland 7 is provided with a lens mounting hole for accommodating the myopia lens 4 and a first mounting groove arranged around the wall of the lens mounting hole 0, and the first sealing element is pressed in the first mounting groove; the first mounting groove comprises at least a first mounting section and a second mounting section, the first mounting section corresponds to the lens trimming of the myopia lens 4, and the second mounting section corresponds to the circular arc edge of the myopia lens 4;

the optical module is further designed to comprise an eye tracking assembly 9, the eye tracking assembly 9 is arranged 5 on one side of the gland 7 and is positioned in the inner cavity, a second gap is formed by enclosing the eye tracking assembly 9, the gland 7 and the side wall of the lens barrel 6, and the second sealing piece is arranged in the second gap; wherein the second sealing member 12 is in interference fit with the second gap, and the second sealing member 12 is used for sealing the second gap;

wherein, the eye tracking assembly 9 comprises a first bracket 901 and an eye tracking device arranged on the first bracket 901; the first bracket 901 is of a closed annular structure, the side edge of the first bracket 901 is provided with a bracket trimming matched with the longitudinal section 601 of the lens barrel 6, the edge of the first bracket 901 is circumferentially provided with a second mounting groove 9011, the second sealing element 12 is pressed in the second mounting groove 9011, and the second sealing element 12 is provided with a second trimming section 1201 matched with the bracket trimming;

the first sealing member 11 and the second sealing member 12 are made of nitrile rubber;

the optical module further comprises a display screen 5 and a second bracket 10, and the display screen 5 is fixedly adhered in the second bracket 10; the end of the lens barrel 6 far away from the gland 7 is provided with a rear cover 8, and the second bracket 10 is connected with the rear cover 8.

According to another aspect of the embodiments of the present application, there is also provided a wearable device, including a housing and an optical module as described above, where the optical module is provided to the housing.

The wearable device is, for example, a VR headset, including VR glasses or VR helmets, and the embodiment of the present application does not specifically limit this.

For example, the shell is a glasses frame, and two glasses frames are arranged on the glasses frame; the optical modules are arranged in two, and the two optical modules are arranged in the two mirror frames.

The specific implementation manner of the head-mounted display device in this embodiment may refer to each embodiment of the optical module, so at least the technical solution of the foregoing embodiment has all the beneficial effects, which are not described herein in detail.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims (14)

1. An optical module, the optical module comprising:

the lens group comprises at least a first lens (1) and a myopia lens (4), wherein the first lens (1) and the myopia lens (4) are both edge-cut lenses, and the first lens (1) and the myopia lens (4) are both provided with at least one lens edge-cut;

the lens cone (6), one end of the lens cone (6) is provided with a gland (7), the myopia lens (4) is arranged in the gland (7), the side part of the gland (7) is provided with a trimming side (701) which is matched with the trimming of the lens of the myopia lens (4), the lens cone (6) is provided with an inner cavity, the first lens (1) is arranged in the inner cavity, and the side wall of the lens cone (6) is provided with a longitudinal section (601) which is matched with the trimming of the lens of the first lens (1); the method comprises the steps of,

a first seal (11) and a second seal (12), the first seal (11) being located between the myopia lens (4) and the gland (7), the second seal (12) being located between the gland (7) and the barrel (6).

2. The optical module according to claim 1, characterized in that the first seal (11) is arranged in a first gap formed between the myopia lens (4) and the gland (7);

the first sealing piece (11) is in tight fit or interference fit with the first gap, the first sealing piece (11) is flush with the top ends of the myopia lens (4) and the gland (7), and the first sealing piece (11) is used for sealing off the first gap.

3. The optical module according to claim 1 or 2, characterized in that the first seal (11) is a closed ring, the first seal (11) surrounds the peripheral side of the near vision lens (4) and is adapted to the edge profile of the near vision lens (4), the first seal (11) comprises a first cut-out section (1101) adapted to the lens cut-out of the near vision lens (4).

4. An optical module according to claim 3, characterized in that the gland (7) is provided with a lens mounting hole for accommodating the myopia lens (4) and a first mounting groove (702) arranged around the wall of the lens mounting hole, and the first sealing element (11) is pressed in the first mounting groove (702).

5. The optical module of claim 4, wherein the first mounting groove (702) comprises at least a first mounting section corresponding to a lens cut of the near vision lens (4) and a second mounting section corresponding to a rounded edge of the near vision lens (4).

6. The optical module according to claim 1, further comprising an eye tracking assembly (9), wherein the eye tracking assembly (9) is disposed on one side of the gland (7) and is located in the inner cavity, the eye tracking assembly (9), the gland (7) and a side wall of the lens barrel (6) enclose a second gap, and the second sealing member (12) is embedded in the second gap.

7. An optical module according to claim 6, characterized in that the second seal (12) is arranged as a tight fit or an interference fit with the second slit, the second seal (12) being arranged to close the second slit.

8. The optical module according to claim 6 or 7, wherein the eye tracking assembly (9) comprises a first support (901) and an eye tracking device arranged on the first support (901);

the first bracket (901) is of a closed annular structure, and the side edge of the first bracket (901) is provided with a bracket trimming matched with the longitudinal section (601) of the lens cone (6);

the edge of the first support (901) is provided with a second mounting groove (9011) along the circumferential direction, the second sealing piece (12) is pressed into the second mounting groove (9011), and the second sealing piece (12) comprises a second trimming section (1201) matched with trimming of the support.

9. The optical module according to claim 1, wherein at least one of the first seal (11) and the second seal (12) is made of nitrile rubber.

10. The optical module according to claim 1, further comprising a second lens (2) and a third lens (3), the second lens (2) and the third lens (3) being both provided as cut-edge lenses;

the first lens (1), the second lens (2) and the third lens (3) are arranged in the inner cavity along the axial direction of the lens barrel (6) at intervals, the lens edge cutting of each lens corresponds, and the first lens (1), the second lens (2) and the third lens (3) are positioned on the same optical axis.

11. An optical module according to claim 1, characterized in that the myopia lens (4) is detachably connected to the gland (7), the myopia lens (4) being configured to be exchangeable according to the user's vision to match the target user's vision.

12. The optical module according to claim 1, further comprising a display screen (5) and a second bracket (10), wherein the display screen (5) is adhesively fixed in the second bracket (10);

one end of the lens cone (6) far away from the gland (7) is provided with a rear cover (8), and the second bracket (10) is connected with the rear cover (8).

13. A wearable device, comprising:

a housing; and

the optical module of any one of claims 1-12, the optical module being disposed in the housing.

14. The wearable device according to claim 13, wherein the housing is a frame, two frames are provided on the frame, the optical modules are provided in two, and the two optical modules are provided in the two frames.

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