CN219202055U - Optical module and wearable equipment - Google Patents

Abstract

The utility model provides an optical module and wearable equipment; the optical module comprises a lens group and a lens cone; the lens group comprises at least a first lens and a second lens; the first lens is set as a vision adjusting lens; the lens cone is provided with an inner cavity, the second lens is arranged in the inner cavity, one end of the lens cone is provided with a first end cover, one side of the first end cover is provided with an assembly structure matched with the first lens, the assembly structure is provided with a magnetic piece, and the first lens is positioned on the first end cover and is magnetically attracted with the magnetic piece; the optical module is configured to replace the first lens according to the visibility of a target object to match the visibility of the target object. According to the utility model, the replaceable vision adjusting lens is additionally arranged on the lens barrel to match the vision of the user, so that the user can watch a clear image without wearing glasses.

Description

Optical module and wearable equipment

Technical Field

The embodiment of the utility model relates to the technical field of optical imaging, in particular to an optical module and wearable equipment.

Background

In recent years, virtual Reality (VR) technology has been applied and rapidly developed in example head mounted display devices. The core component of the virtual reality technology is an optical module. The quality of the image displayed by the optical module will directly determine the quality of the head mounted display device.

When using a head mounted display device, a user typically wears it on his head, such as the eye, for a visual experience. However, the vision difference of different users is large, and some users need to wear glasses to obtain clear images, and wearing the glasses and the head-mounted display device simultaneously can cause poor experience of the product.

Disclosure of Invention

The utility model aims to provide a novel technical scheme of an optical module and a wearable device, wherein the vision degree of a user can be matched by changing a vision degree adjusting lens, so that the user can watch a clear picture without wearing glasses.

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

a lens set comprising at least a first lens and a second lens; wherein the first lens is configured as a vision adjusting lens;

the lens cone is provided with an inner cavity, the second lens is arranged in the inner cavity, one end of the lens cone is provided with a first end cover, one side of the first end cover is provided with an assembly structure matched with the first lens, the assembly structure is provided with a magnetic piece, and the first lens is positioned on the first end cover and is magnetically attracted with the magnetic piece;

the optical module is configured to replace the first lens according to the visibility of a target object to match the visibility of the target object.

Optionally, the first lens and the second lens are both cut edge lenses.

Optionally, the optical module further comprises an eye tracking assembly, wherein the eye tracking assembly comprises a supporting structural member and an eye tracking device arranged on the supporting structural member;

the support structure is annular, the support structure with first end cover is connected, the eyeball tracking subassembly is close to first lens.

Optionally, the first lens includes the lens body and encloses and establish the installation department of lens body periphery, the installation department adopts magnetic material to make, the installation department can with the mutual actuation of magnetic part.

Optionally, the magnetic piece is fixed with the assembly structure in an adhesion way, and the magnetic piece is annular and is matched with the edge profile of the first lens; or,

the magnetic piece comprises a plurality of magnets which are arranged at intervals, and the magnets are adhered and fixed on the assembly structure.

Optionally, the lens group further includes a third lens and a fourth lens, the third lens and the fourth lens are both disposed in the inner cavity, the third lens is located between the second lens and the fourth lens, and the third lens and the fourth lens are both disposed as trimming lenses.

Optionally, the cut edges of the first lens, the second lens, the third lens and the fourth lens correspond to each other, and the first lens, the second lens, the third lens and the fourth lens are located on the same optical axis.

Optionally, a spacer ring is disposed in the inner cavity of the lens barrel, the second lens and the third lens are respectively fixed on two sides of the spacer ring, and the spacer ring is used for fixing the second lens and the third lens in the inner cavity and forming a first interval between the second lens and the third lens.

Optionally, a carrying table is disposed in the inner cavity of the lens barrel, the periphery of the fourth lens is fixed to the carrying table in an adhesive manner, and a second interval is formed between the third lens and the fourth lens.

Optionally, the optical module further comprises a bracket and a display screen, and the bracket is covered at the other end of the lens cone;

the lens barrel is also provided with a second end cover, a mounting hole is formed in the second end cover, and the display screen is arranged in the mounting hole; the second end cover is fixedly connected with the lens barrel through the support, and a light transmission area corresponding to the display screen is arranged on the support.

In a second aspect, the present utility model 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.

According to the embodiment of the utility model, an optical module is provided, a replaceable diopter adjusting lens, namely a first lens, is arranged on a lens barrel, and can be matched with the diopter of a user by replacing the diopter adjusting lens, so that diopter adjustment is realized; it can be seen that the whole optical adjustment scheme does not involve complex transmission matching relationships at all, and the formed optical module is simpler in structure and low in cost. The optical scheme of the utility model is suitable for being applied to the wearable equipment with adjustable vision, and a user can still watch clear images under the condition of not wearing glasses.

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 diagram of an optical module according to an embodiment of the present utility model;

FIG. 2 is a second schematic diagram of an optical module according to an embodiment of the utility model;

fig. 3 is an exploded view of an optical module according to an embodiment of the present utility model.

Reference numerals illustrate:

10. a first lens; 11. a lens body; 12. a mounting part; 13. trimming the first lens; 20. a second lens; 21. trimming the second lens; 30. a third lens; 40. a fourth lens; 50. a lens barrel; 51. a first end cap; 511. assembling a structure; 52. a second end cap; 521. a mounting hole; 53. an inner cavity; 531. a carrying platform; 54. a sidewall; 541. longitudinal section; 542. an arc surface; 60. a magnetic member; 70. a bracket; 71. a light-transmitting region; 80. a display screen; 90. a spacer ring; 100. an eye tracking assembly.

Detailed Description

Various exemplary embodiments of the present utility model 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 utility model 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 utility model, 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 utility model, an optical module is provided that is suitable for application to a head mounted display device (Head mounted display, HMD), such as a VR display head mounted device. The VR head-mounted display device may include VR glasses or VR helmets, for example, which is not limited in the embodiment of the present utility model.

In the design of VR products, taking VR glasses as an example, in order to enable the products to avoid nose bridge, eyebrow and other areas, in the prior art, the lenses applied in the products are subjected to trimming treatment, and the lenses form a non-whole circular structure. However, another problem with such lens designs is that: because the vision difference of using crowd is great, so need adjust the distance between lens and the display screen in order to satisfy diopter (diopter) and adjust, and the lens leads to bearing structure such as lens cone of this lens after cutting edge and also to correspond and present the side cut, leads to the lens cone whole to be the non-whole round structure, inconvenient regulation lens and the distance of display screen can not satisfy different vision crowd's user demand.

An embodiment of the present utility model provides an optical module, referring to fig. 1 to 3, which includes a lens group and a lens barrel 50; the lens group comprises at least a first lens 10 and a second lens 20; wherein the first lens 10 is configured as a vision adjusting lens; the lens cone 50 is provided with an inner cavity 53, the second lens 20 is arranged in the inner cavity 53, one end of the lens cone 50 is provided with a first end cover 51, one side of the first end cover 51 is provided with an assembling structure 511 matched with the first lens, the assembling structure 511 is provided with a magnetic piece 60, and the first lens 10 is positioned on the first end cover 51 and is magnetically attracted with the magnetic piece 60; the optical module is configured to replace the first lens 10 according to the visibility of a target object to match the visibility of the target object.

According to the optical module provided in the above embodiment, the lens barrel 50 is provided with the replaceable diopter adjusting lens, namely the first lens 10, and diopter adjustment is realized by changing the diopter adjusting lens to match the diopter of the user; the whole optical adjustment scheme does not relate to complex transmission matching relationship at all, so that the formed optical module is simpler in structure and low in cost. The optical scheme of the utility model is suitable for being applied to the wearable equipment with adjustable vision, and a user can still watch clear images under the condition of not wearing glasses.

In the optical module set according to the embodiment of the present utility model, for example, the first lens 10 with adjustable vision is disposed at the end of the lens barrel 50 near the human eye, and the first lens 10 is designed to be optionally replaced as required. For example, the combination between the first lens 10 and the lens barrel 50 is a magnetic design, which makes the replacement of the first lens 10 convenient and fast, saves time and labor, and does not increase the manufacturing difficulty and cost of the product.

For example, a plurality of first lenses 10 with different diopters can be provided, and when a user wearing the glasses uses the optical module of the utility model, the user can select a proper first lens 10 to match the vision according to the myopia condition of the user, so that the user can see a clear picture without wearing the glasses.

That is, the diopter adjusting lens is added to the lens barrel 50, and the diopter can be adjusted in a form of wearing glasses by the user by replacing the diopter adjusting lens matched with the diopter of the user when in use. The user does not need to wear glasses and directly wears the optical module, so that the wearing comfort of the user can be improved.

The scheme of the utility model does not involve the movement of the lens, so that the appearance of the lens and the lens barrel can be not limited to be of a full circular structure. That is, the optical scheme of the present utility model is applicable not only to a lens barrel of a conventional circular structure, but also to a lens barrel of a non-circular shape formed by a slice lens popular in recent years, see fig. 3. In particular, the optical solution of the present utility model is well suited for applications where the lens barrel exhibits a non-circular structure.

The optical module provided by the embodiment of the utility model designs the first lens 10 which can be replaced and is used as a diopter adjusting lens, so that diopter adjustment can be realized, and the diopter can be matched with the diopter of a user. The optical scheme of the utility model is very suitable for being applied to a wearable device (such as VR device) with adjustable vision, and a user can still watch a clear image without wearing glasses.

The optical scheme provided by the embodiment of the utility model can be used for people with different vision. The user who wears glasses can promote the use experience sense, and the user need not to wear glasses, can be through changing the mode of first lens 1 matches oneself's visibility, the travelling comfort of promotion use that can be better.

The optical module provided by the embodiment of the utility model not only can realize diopter adjustment, but also can solve the problem of astigmatism and other parameter requirements.

Referring to fig. 2 and 3, the optical module provided in the embodiment of the present utility model includes a lens set, where the lens set includes at least two lenses, such as the first lens 10 and the second lens 20, and optical elements, such as a beam splitting element, a phase retarder, and a polarization reflecting element, may be further disposed in the lens set, so that the whole optical module forms a folded optical path (path) structure.

For example, the lens set includes a first lens 10 and a second lens 20, and the lens set further includes a light splitting element, a phase retarder, and a polarization reflecting element, where the optical elements (optical films) may be disposed on either side of the second lens 20 or on both sides, so that the optical modules form a folded optical path structure, so that the light used for imaging may be folded back therein, and the propagation path of the light may be prolonged, thereby facilitating final clear imaging.

In the optical module of the embodiment of the utility model, the number of lenses includes but is not limited to the two, and the number of lenses can 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.

In the embodiment of the present utility model, considering various factors such as the volume, weight, imaging quality and production cost of the optical module, it is preferable to design two lenses in the optical path, wherein one lens may be used for imaging and vision adjustment such as the first lens 10, and the other lens such as the second lens 20 is mainly used for imaging, which is not limited to being provided with only one lens and may be provided with a plurality of lenses. When a plurality of second lenses 20 are provided, the plurality of second lenses 20 may be provided at intervals as required and ensured to be on the same optical axis.

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. Optionally, the reflectance of the light-splitting element is 47% -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 an embodiment of the utility model, the phase retarder, in combination with the polarizing reflective element, 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 or two sides of the second lens 20 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 the optical module set provided by the present utility model, the lens barrel 50 can be used for carrying the first lens 10 and the second lens 20, and it should be noted that the first lens 10 is not fixedly connected with the lens barrel 50, and the first lens 10 can be replaced, so that the purpose of adjusting diopter can be achieved, and further the use requirements of people with different vision can be satisfied.

The lens barrel 50 has two opposite end caps, for example: a first end cap 51 and a second end cap 52. Referring to fig. 3, in the use state of the optical module, the first end cover 51 is, for example, close to the human eye, the first end cover 51 may be annular and conform to the edge contour of the first lens 10, and the first end cover 51 is provided with a fitting structure 511. Specifically, the assembly structure 511 may be, for example, a ring of annular stand integrally formed in the first end cover 51, and the edge of the first lens 10 may overlap and be supported on the annular stand and be fixed by magnetic attraction. At the same time, the first end cap 51 also protects the first lens 10.

The lens barrel 50 further has a second end cap 52, for example, the second end cap 52 is disposed opposite to the first end cap 51, and referring to fig. 3, a mounting hole 521 is provided in the second end cap 52. Specifically, when the first end cap 51 is close to the human eye, the second end cap 52 is far away from the human eye and is located on the side of the optical module where the display screen 80 is located (see fig. 3 for a display screen 80, where the display screen 80 is located in the mounting hole 521, and the location of the display screen will be discussed later).

In some examples of the utility model, referring to fig. 1-3, the first lens 10 and the second lens 20 are both configured as edge cut lenses.

Wherein the first lens 10 and the second lens 20 are for example each provided as a cut-edge lens, each lens having at least one cut edge, see fig. 3, wherein a first lens cut edge 13 of the first lens 10 is shown, and a second lens cut edge 21 of the second lens 20 is shown, while it can be seen from the third lens 30 and the fourth lens 40 shown in fig. 3, each having at least one cut edge.

The shape of the trimming lens is an irregular shape, namely a non-whole round structure.

On the basis of this, the barrel 50 for carrying the first lens 10 is also formed with a corresponding longitudinal section 541 in its side wall 54 to accommodate the first lens edge 13 of the first lens 10 and/or the second lens edge 21 of the second lens 20. The longitudinal section 541 formed on the side wall 54 of the lens barrel 50 may be used to form a reasonable avoidance for the nose bridge area or the eyebrow area of the user. The other region on the side wall 54 of the lens barrel 50 is, for example, an arc surface 542.

In the example of the present utility model, the technical solution of improving the optical performance by increasing the outer diameter of the optical lens is satisfied by designing each lens as a cut edge lens. The problem of interference between the lens and the wearing of the user is avoided through trimming, and the wearing requirement of the lens barrel non-whole circle structure after the lens is trimmed is met; the wearing requirements of people with different myopia degrees are realized by matching with the replaceable diopter adjusting lenses.

Of course, the optical module of the utility model not only can realize diopter adjustment, but also can solve a series of other parameter requirements such as astigmatism. In addition, the whole optical module has no complex linkage relation, reduces the cooperation and assembly of the structural components, and reduces the product cost and the assembly cost.

It should be noted that, the optical solution for adjusting the visibility provided by the embodiment of the present utility model is not only suitable for most of the lens barrels with full-circle structures in the market at present, but also suitable for the lens barrels with non-full-circle shapes formed by the trimming lenses, such as the lens barrel 50 described above, and has a wide application range.

In some examples of the utility model, referring to fig. 3, the optical module further includes an eye tracking assembly 100, the eye tracking assembly 100 including a support structure and an eye tracking device disposed on the support structure; the support structure is annular, the support structure with first end cover is connected, the eyeball tracking subassembly is close to first lens.

The optical module provided by the utility model can be applied to VR equipment, for example. 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 100 and the first lens 10 are disposed at the end of the lens barrel 50 close to the human eye, so that the eye tracking assembly 100 can be 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.

Wherein, referring to fig. 3, the eye tracking assembly 100 may be contoured to mate with the first endcap 51 to facilitate assembly of the eye tracking assembly 100 with the first endcap 51. In particular, the support structure also has a trimming structure, see the longitudinal trimming shown in fig. 3.

In some examples of the present utility model, the first lens 10 includes a lens body 11 and a mounting portion 12 surrounding the outer periphery of the lens body 11, where the mounting portion 12 is made of, for example, a magnetic material, and the mounting portion 12 is capable of being attracted to the magnetic member 60.

Specifically, the outer Zhou Weirao of the first lens 10 and the contour of the first lens 10 are provided with a circle of mounting portions 12, and the mounting portions 12 may be made of, for example, a magnetic material, which makes the mounting portions 12 formed to have magnetism. The first lens 10 can be attracted to the first end cover 51 by the mounting portion 12 by the principle of magnetic attraction. This way of magnetically attaching makes it possible to disassemble and assemble the first lens 10 simply and easily without increasing the manufacturing cost of the product.

In some examples of the utility model, the magnetic member 60 is adhesively fixed to the mounting structure 511, and the magnetic member 60 is annular and matches the edge profile of the first lens 10, see fig. 3; alternatively, the magnetic member 60 may include a plurality of magnets disposed at intervals, and a plurality of magnets may be adhesively fixed to the mounting structure 511.

The magnetic member 60 may be integrated with the assembly structure 511 formed on the first end cover 51, for example, by bonding, which is simple and has good firmness.

In the present utility model, the outer shape of the magnetic member 60 is designed to be matched with the edge profile of the first lens 10 or the shape of the mounting portion 12, so that after the first lens 10 is mounted on the lens barrel 50, the first lens 10 is better attached to the magnetic member 60, so that the magnetic attraction effect is good, and the first lens 10 is not easy to fall.

In some examples of the present utility model, referring to fig. 2 and 3, the lens set may further include a third lens 30 and a fourth lens 40, wherein the third lens 30 and the fourth lens 40 are both disposed in the inner cavity 53, the third lens 30 is located between the second lens 20 and the fourth lens 40, and the third lens 30 and the fourth lens 40 are both configured as edge cutting lenses.

In the optical module according to the embodiment of the present utility model, the first lens 10, the second lens 20, the third lens 30 and the fourth lens 40 can be supported by the lens barrel 50, and the lens barrel 50 is, for example, a hollow column.

Optionally, by adding the third lens 30 and the fourth lens 40 in the lens barrel 50, which are combined with the second lens 20, and then matching with optical elements such as a light splitting element, a phase retarder, a polarization reflecting element, etc., a folded light path can be formed, which is beneficial to improving the definition of imaging. The first lens 10 can adjust the visibility.

It should be noted that more lenses may be provided in the lens barrel 50, and the lens barrel is not limited to the above four lenses.

In addition, for convenience of assembly, the second lens 20, the third lens 30 and the fourth lens 40 can be arranged

The lens trimming of the first lens 10, the second lens 20, the third lens 30 and the fourth lens 40 are corresponding, and meanwhile, the first lens 10, the second lens 20, the third lens 30 and the fourth lens 40 are required to be located on the same optical axis.

The technical scheme of the utility model relates to the VR field, in particular to a structural scheme which can be used for conveniently wearing a trimming lens formed by cutting the edge of the lens without interfering with a nose bridge area, and the lens is correspondingly trimmed after trimming, so that the whole lens barrel is of a non-full-circle structure and diopter adjustment is realized by taking the whole lens barrel as a background.

Optionally, referring to fig. 3, a spacer ring 90 is disposed in the inner cavity 53 of the lens barrel 50, the second lens 20 and the third lens 30 are respectively fixed on two sides of the spacer ring 90, and the spacer ring 90 is used to fix the second lens 20 and the third lens 30 in the inner cavity 53 and form a first space between the second lens 20 and the third lens 30.

The range of the first interval formed between the second lens 20 and the third lens 30 may be set according to specific needs, which is not limited in the present utility model.

The spacer ring 90 mainly serves to support the second lens 20 and the third lens 30, and to space the second lens 20 from the third lens 30 at a certain distance.

Optionally, referring to fig. 2, a carrying table 531 is disposed in the inner cavity 53 of the lens barrel 50, the periphery of the fourth lens 40 is adhered and fixed to the carrying table 531, and a second space is formed between the third lens 30 and the fourth lens 40.

It should be noted that the fourth lens 40 may be directly fixed in the inner cavity 53 of the lens barrel 50, for example, where the carrying platform 531 is a ring platform, for example, and may be formed on the inner wall of the lens barrel 50 by an integral molding method.

Of course, the fourth lens 40 and the third lens 30 may be fixedly supported by the spacer ring 90, so that the fourth lens 40 and the third lens 30 may maintain a predetermined distance.

It should be noted that, the distance between the first lens 10 and the second lens 20, and the first interval between the second lens 20 and the third lens 30, and the second interval between the third lens 30 and the fourth lens 40 may be flexibly set according to the needs, which is not limited in the present utility model.

In some examples of the present utility model, referring to fig. 2 and 3, the optical module further includes a bracket 70 and a display screen 80, where the bracket 70 covers the other end of the lens barrel 50;

the lens barrel 50 further has a second end cover 52, a mounting hole 521 is provided on the second end cover 52, and the display screen 80 is provided in the mounting hole 521; the second end cover 52 is fixedly connected with the lens barrel 50 through the bracket 70, and a light-transmitting area 71 corresponding to the display screen 80 is arranged on the bracket 70.

In the optical module provided by the embodiment of the utility model, the second end cover 52 can support and protect the display screen 80, and the second end cover 52 is connected with the lens barrel 50 through the bracket 70. In addition, it should be noted that the first end cap 51 may serve to support and protect the first lens 10.

The bracket 70 is used for connecting the second end cover 52 with the lens barrel 50, and a light transmission area 71 is disposed on the bracket 70 corresponding to the display screen 80 so that the imaging light emitted by the display screen 80 can be incident into the lens barrel 50.

In a specific example, referring to fig. 1 to 3, the optical module includes: a first lens 10, a second lens 20, a third lens 30, and a fourth lens 40; the first lens 10 is a vision adjusting lens, all lenses are trimming lenses, trimming edges of the first lens 10, the second lens 20, the third lens 30 and the fourth lens 40 are corresponding, and the first lens 10, the second lens 20, the third lens 30 and the fourth lens are positioned on the same optical axis;

the first lens 10 includes a lens body 11 and a mounting portion 12 surrounding the outer periphery of the lens body 11, wherein the mounting portion 12 is made of a magnetic material;

the optical module further comprises a lens barrel 50, the lens barrel 50 is provided with an inner cavity 53, the second lens 20 is arranged in the inner cavity 53, one end of the lens barrel 50 is provided with a first end cover 51, the other end of the lens barrel 50 is provided with a second end cover 52, one side of the first end cover 51 is provided with an assembling structure 511 matched with the first lens 10, the assembling structure 511 is provided with a magnetic piece 60, and the first lens 10 is positioned on the first end cover 51 and magnetically attracted with the magnetic piece 60 through an installation part 12; wherein the magnetic member 60 is adhered to the assembling structure 511, and the magnetic member 60 is annular and matches with the edge profile of the first lens 10;

the optical module further comprises an eye tracking assembly 100, wherein the eye tracking assembly 100 comprises a supporting structural member and an eye tracking device arranged on the supporting structural member; the supporting structural member is annular, the supporting structural member is connected with the first end cover 51, and the eye tracking assembly is close to the first lens 10;

a spacer ring 90 is disposed in the inner cavity 53 of the lens barrel 50, the second lens 20 and the third lens 30 are respectively fixed on two sides of the spacer ring 90, and the spacer ring 90 is used for fixing the second lens 20 and the third lens 30 in the inner cavity 53 and forming a first space between the second lens 20 and the third lens 30; a bearing table 531 is disposed in the inner cavity 53 of the lens barrel 50, the periphery of the fourth lens 40 is adhered and fixed to the bearing table 531, and a second space is formed between the third lens 30 and the fourth lens 40;

the optical module further comprises a bracket 70 and a display screen 80, wherein the bracket 70 is covered at the other end of the lens barrel 50; the lens barrel 50 further has a second end cover 52, a mounting hole 521 is provided on the second end cover 52, and the display screen 80 is provided in the mounting hole 521; the second end cover 52 is fixedly connected with the lens barrel 50 through the bracket 70, and a light transmission area 71 corresponding to the display screen 80 is arranged on the bracket 70;

the optical module is configured to replace the first lens 10 according to the visibility of a target object to match the visibility of the target object.

The optical module shown in the above specific example includes: placing the third lens 30 into the barrel 50; placing a spacer ring 90 over the third lens 30 to control the lens spacing; placing the second lens 20 over the spacer ring 90 and fixing the second lens 20 by dispensing; the lens barrel 50 is reversed, the fourth lens 40 is arranged in the inner cavity 53 of the lens barrel 50 and is adhered and fixed with the bearing table 531 in the inner cavity 53 by dispensing; the eye tracking assembly 100 is assembled to the lens barrel 50 and fixed; the first end cap 51 is glued and sealed with the lens barrel 50; placing the first lens 10 onto the first end cap 51 to engage the magnetic member 60 to secure the first lens 10; the bracket 70 is fixedly connected with the lens barrel 50, and the display screen 80 and the second end cover 52 are glued and then fixed on the bracket 70, so that the assembly of the optical module is completed.

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

The wearable device is, for example, a VR headset, including VR glasses or VR helmets, and the embodiment of the present utility model is not limited in this way.

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 of the embodiment of the present utility model may refer to each embodiment of the optical module, so at least the technical solution of the embodiment has all the beneficial effects, which are not described in detail herein.

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.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. 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 utility model. The scope of the utility model is defined by the appended claims.

Claims (12)

1. An optical module, the optical module comprising:

a lens set comprising at least a first lens (10) and a second lens (20); wherein the first lens (10) is arranged as a vision adjusting lens;

the lens cone (50), the lens cone (50) is provided with an inner cavity (53), the second lens (20) is arranged in the inner cavity (53), one end of the lens cone (50) is provided with a first end cover (51), one side of the first end cover (51) is provided with an assembly structure (511) matched with the first lens (10), the assembly structure (511) is provided with a magnetic piece (60), and the first lens (10) is positioned on the first end cover (51) and magnetically attracted with the magnetic piece (60);

the optical module is configured to replace the first lens (10) according to the visibility of a target object to match the visibility of the target object.

2. The optical module according to claim 1, wherein the first lens (10) and the second lens (20) are both provided as cut edge lenses.

3. The optical module of claim 1, further comprising an eye tracking assembly (100), the eye tracking assembly (100) comprising a support structure and an eye tracking device disposed on the support structure;

the support structure is annular, the support structure is connected with the first end cover (51), and the eye tracking assembly is close to the first lens (10).

4. The optical module according to claim 1, wherein the first lens (10) comprises a lens body (11) and a mounting portion (12) surrounding the periphery of the lens body (11), the mounting portion (12) is made of a magnetic material, and the mounting portion (12) can be attracted to the magnetic member (60).

5. The optical module according to claim 1, characterized in that the magnetic element (60) is adhesively secured to the mounting structure (511), the magnetic element (60) being annular and adapted to the edge profile of the first lens (10); or,

the magnetic member (60) includes a plurality of magnets disposed at intervals, and a plurality of magnets are adhesively secured to the mounting structure (511).

6. The optical module according to claim 1, wherein the lens group further comprises a third lens (30) and a fourth lens (40), the third lens (30) and the fourth lens (40) are both disposed in the inner cavity (53), the third lens (30) is disposed between the second lens (20) and the fourth lens (40), and the third lens (30) and the fourth lens (40) are both configured as edge cut lenses.

7. The optical module according to claim 6, wherein the cut edges of the first lens (10), the second lens (20), the third lens (30) and the fourth lens (40) correspond, and the first lens (10), the second lens (20), the third lens (30) and the fourth lens (40) are located on the same optical axis.

8. The optical module according to claim 6, wherein a spacer ring (90) is disposed in the inner cavity (53) of the lens barrel (50), the second lens (20) and the third lens (30) are respectively fixed on two sides of the spacer ring (90), and the spacer ring (90) is used for fixing the second lens (20) and the third lens (30) in the inner cavity (53) and forming a first space between the second lens (20) and the third lens (30).

9. The optical module according to claim 6, wherein a bearing table (531) is disposed in the inner cavity (53) of the lens barrel (50), the periphery of the fourth lens (40) is adhered and fixed to the bearing table (531), and a second space is formed between the third lens (30) and the fourth lens (40).

10. The optical module according to claim 1, further comprising a bracket (70) and a display screen (80), wherein the bracket (70) is covered at the other end of the lens barrel (50);

the lens barrel (50) is further provided with a second end cover (52), a mounting hole (521) is formed in the second end cover (52), and the display screen (80) is arranged in the mounting hole (521);

the second end cover (52) is fixedly connected with the lens barrel (50) through the support (70), and a light transmission area (71) corresponding to the display screen (80) is arranged on the support (70).

11. A wearable device, comprising:

a housing; and

the optical module of any one of claims 1-10, the optical module being disposed in the housing.

12. The wearable device according to claim 11, wherein the housing is a frame, and the frame is provided with two frames;

the optical modules are arranged in two, and the two optical modules are arranged in the two mirror frames.

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