CN113703173B - Optical device and augmented reality device combining glasses function and augmented reality function - Google Patents

Abstract

The present invention provides an optical device combining the functions of glasses and augmented reality, which is suitable for making ambient light beams incident on the eyes of users. The optical device combining glasses function and augmented reality function includes glasses lens and diffractive optical element. The spectacle lens has a first surface facing the eye and a second surface facing away from the eye. The diffractive optical element is arranged on the first surface of the spectacle lens or between the first surface and the second surface of the spectacle lens, the diffractive optical element has a third surface facing the eye and a fourth surface facing away from the eye, wherein the diffractive optical element The element is a diffractive optical film or a diffractive optical plate. An augmented reality device is also presented.

Description

Optical device and augmented reality device combining glasses function and augmented reality function

technical field

The present invention relates to an optical device and an augmented reality (Augmented Reality, AR) device, in particular to an optical device and an AR device that combine the functions of glasses and augmented reality.

Background technique

Augmented reality technology is a technology that integrates information such as visual effects, sound effects, and spatial information of the virtual world into real environment information. It not only displays real environment information, but also displays virtual information at the same time. Existing augmented reality devices do not have the function of glasses, and users who need vision correction must wear additional correction glasses in order to obtain clearer real environment information and better visual experience. In addition, existing augmented reality devices are easily affected by external stray light when used outdoors.

Contents of the invention

The present invention is aimed at an optical device combining glasses function and augmented reality function and an augmented reality device, which can provide glasses with augmented reality effect.

An embodiment of the present invention provides an optical device combining the functions of glasses and augmented reality, which is suitable for making ambient light beams incident on the eyes of the user. The optical device combining glasses function and augmented reality function includes glasses lens and diffractive optical element (DOE). The spectacle lens has a first surface facing the eye and a second surface facing away from the eye. The diffractive optical element is arranged on the first surface of the spectacle lens or between the first surface and the second surface of the spectacle lens, the diffractive optical element has a third surface facing the eye and a fourth surface facing away from the eye, wherein the diffractive optical element The element is a diffractive optical film or a diffractive optical plate.

An embodiment of the present invention provides an augmented reality device, including spectacle lenses, a diffractive optical element, and a projector. The spectacle lens has a first surface facing an eye of a user of the augmented reality device and a second surface facing away from the eye. The diffractive optical element is arranged on the first surface of the spectacle lens or in the spectacle lens, the diffractive optical element has a third surface facing the eye and a fourth surface facing away from the eye, wherein the diffractive optical element is a diffractive optical film or a diffractive optical plate. The projector outputs image beams, and the diffractive optical element is arranged on the transmission path of the image beams, and the diffractive optical elements project the image beams to eyes. Among them, the ambient light beam from the external environment is transmitted to the eyes after passing through the spectacle lens and the diffractive optical element.

Based on the above, in the optical device and the augmented reality device of the embodiments of the present invention, glasses with augmented reality effect can be provided by combining the diffractive optical element with the lens of the glasses.

Description of drawings

1 is a schematic cross-sectional view of an optical device and an augmented reality device according to an embodiment of the present invention;

2 is a schematic cross-sectional view of an optical device and an augmented reality device according to another embodiment of the present invention;

3 is a schematic cross-sectional view of an optical device and an augmented reality device according to another embodiment of the present invention;

4 is a schematic cross-sectional view of an optical device according to another embodiment of the present invention;

Fig. 5 is a schematic cross-sectional view of a light-shielding element of the optical device of the embodiment of Fig. 4;

FIG. 6 is a schematic diagram of a manufacturing device for manufacturing a light-shielding element according to an embodiment of the present invention.

Explanation of reference signs

10, 10a, 10b, 10c: optical device

100, 100a, 100b: augmented reality device

110: spectacle lens

112: The first sub-lens

114: the second sub-lens

120: Diffractive optical element

120a: diffractive optical film

120b: diffractive optical plate

120c: Holographic optical element

130: shading element

130S: surface

132: Strip shading structure

133: connected part

134: Base membrane

134a: strip transparent structure

140:Projector

20: Manufacturing device

21: Membrane material

22:Roller set

22a: The first roller

22b: Second roller

22c: The first auxiliary roller

22d: Second auxiliary roller

24: Mold Roller

26: Glue injection equipment

28: Lighting equipment

30: strip structure

50: eyes

A: Cross section

H: Depth

IL: image beam

O: object

OL: Reality Beam

S1: first surface

S2: second surface

S3: third surface

S3a: light incident part

S3b: light emitting part

S4: fourth surface

S5: fifth surface

S6: sixth surface

S7: The seventh surface

SL: stray beam

W: Interval

WL: Ambient Beam

Detailed ways

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used in the drawings and description to refer to the same or like parts.

FIG. 1 is a schematic cross-sectional view of an optical device 10 and an augmented reality device 100 according to an embodiment of the present invention. Please refer to FIG. 1 , the optical device 10 combining the glasses function and the augmented reality function of the present embodiment includes a glasses lens 110 and a diffractive optical element 120 . The spectacle lens 110 has a first surface S1 facing the eye 50 and a second surface S2 facing away from the eye 50 . The diffractive optical element 120 is disposed on the first surface S1 of the spectacle lens 110 or disposed between the first surface S1 and the second surface S2 of the spectacle lens 110 . That is to say, in this embodiment, the diffractive optical element 120 can be disposed on one side of the first surface S1 of the spectacle lens 110 (for example, attached to the first surface S1 of the spectacle lens 110 ) or disposed in the spectacle lens 110 . In one embodiment, the diffractive optical element 120 may be in direct contact with the first surface S1 of the spectacle lens 110, and the diffractive optical element 120 may be directly fixed on the first surface S1 of the spectacle lens 110 by, for example, sticking or other bonding methods. , or directly form the diffractive optical element 120 on the first surface S1 of the spectacle lens 110 . However, in other embodiments, other film layers may also be provided between the diffractive optical element 120 and the first surface S1 of the spectacle lens 110 . The diffractive optical element 120 has a third surface S3 facing the eye 50 and a fourth surface S4 facing away from the eye 50 . In this embodiment, the optical device 10 that combines the glasses function and the augmented reality function is suitable for making the ambient light beam WL incident on the user's eyes 50, so the user can use the optical device 10 that combines the glasses function and the augmented reality function The device 10 sees a scene of the real world. By combining a diffractive optical element to a spectacle lens, the optical device of the present invention can provide glasses with augmented reality effects.

Further, the spectacle lens 110 of the embodiment of the present invention may be a lens for correcting myopia, hyperopia or presbyopia. Moreover, the spectacle lens 110 of the embodiment of the present invention may have more than two corrective functions according to actual needs. Therefore, the user of the optical device of the present invention does not need to wear additional corrective glasses in addition to the optical device, which reduces the burden on the user and improves the convenience of use. In addition, the spectacle lens 110 can be a plastic lens to improve the safety of the optical device and the augmented reality device of the present invention. The diffractive optical element 120 in the embodiment of the present invention has a diffractive structure (omitted and not shown in the figure). Specifically, the diffractive optical element 120 can be a diffractive optical film or a diffractive optical plate with a diffractive structure. The embodiment of FIG. 1 shows that the diffractive optical element 120 is a diffractive optical film 120a, but in other embodiments, the diffractive optical element 120 may also be a diffractive optical plate. In this embodiment, the diffractive optical film 120a is used. In addition to reducing the production cost, the diffractive optical film 120a can also prevent the eyes 50 from being hurt when the spectacle lens 110 is broken by impact.

In addition, in the present embodiment, the diffractive optical element 120 is configured such that at least a part of the light beam incident from the third surface S3 of the diffractive optical element 120 completely occurs between the third surface S3 and the fourth surface S4 of the diffractive optical element 120 . reflection. Under this configuration, a part of the diffractive optical element 120 has a light guiding function similar to a waveguide element.

FIG. 1 also shows an augmented reality device 100 according to an embodiment of the present invention. Referring to FIG. 1 , the augmented reality device 100 of this embodiment includes a spectacle lens 110 , a diffractive optical element 120 and a projector 140 . The spectacle lens 110 has a first surface S1 facing the eye 50 of the user of the augmented reality device 100 and a second surface S2 facing away from the eye 50 . The diffractive optical element 120 is disposed on the first surface S1 of the spectacle lens 110 , or disposed between the first surface S1 and the second surface S2 of the spectacle lens 110 . The diffractive optical element 120 has a third surface S3 facing the eye 50 and a fourth surface S4 facing away from the eye 50 . Wherein, the spectacle lens 110 and the diffractive optical element 120 may have a configuration similar to that described above for the optical device 10 combining the spectacle function and the augmented reality function, and will not be repeated here. In this embodiment, the projector 140 outputs the image beam IL, and the diffractive optical element 120 is disposed on the transmission path of the image beam IL, and the diffractive optical element 120 projects the image beam IL to the eye 50 . That is to say, the image light beam IL output by the projector 140 can be projected to the diffractive optical element 120 , and then projected to the eyes 50 of the user through the diffractive optical element 120 . Therefore, the user can see the projected augmented (augmented) image frame through the diffractive optical element 120 . In addition, the ambient light beam WL from the external environment can be transmitted to the eye 50 after passing through the spectacle lens 110 and the diffractive optical element 120 . Therefore, the user can also see objects in the real world through the spectacle lens 110 and the diffractive optical element 120 at the same time, so as to combine the augmented image frame and the object image in the real world to realize the device function of augmented reality.

Further, referring to FIG. 1 , in this embodiment, the image light beam IL output by the projector 140 is projected onto the third surface S3 of the diffractive optical element 120 . Wherein, at least a part of the image light beam IL can enter the diffractive optical element 120 through the third surface S3 from the light incident portion S3 a of the third surface S3 . At least a part of the image light beam IL may be totally reflected between the third surface S3 and the fourth surface S4 of the diffractive optical element 120 after passing through the third surface S3 . At least a part of the image light beam IL can be diffracted on at least one of the third surface S3 and the fourth surface S4 after being totally reflected between the third surface S3 and the fourth surface S4 of the diffractive optical element 120 and can pass through The light emitting portion S3b of the third surface S3 is projected to the eye 50 . Therefore, at least a part of the image light beam IL can pass through the third surface S3 to leave the diffractive optical element 120 and project to the eyes 50 of the user. Wherein, the portion of the diffractive optical element 120 located between the light incident portion S3a and the light exit portion S3b has a light guiding function similar to that of a waveguide element, and can transmit the image light beam IL.

FIG. 2 is a schematic cross-sectional view of an optical device 10 a and an augmented reality device 100 a according to another embodiment of the present invention. Please refer to FIG. 2 , the optical device 10 a and the augmented reality device 100 a of this embodiment are similar to the optical device 10 and the augmented reality device 100 in FIG. 1 , and the main differences between the two are as follows. In this embodiment, the diffractive optical element 120 is a holographic optical element 120c (Holographic optical element, HOE). That is to say, the diffractive optical element 120 is configured so that the light beam incident from the third surface S3 of the diffractive optical element 120 undergoes reflective diffraction on the third surface S3 . In this embodiment, the image light beam IL is projected onto the third surface S3 of the diffractive optical element 120 . The image beam IL is reflectively diffracted on the third surface S3 of the diffractive optical element 120 and projects at least a part of the image beam IL to the eye 50 .

FIG. 3 is a schematic cross-sectional view of an optical device 10b and an augmented reality device 100b according to another embodiment of the present invention. Please refer to FIG. 3 , the optical device 10 b and the augmented reality device 100 b of this embodiment are similar to the optical device 10 and the augmented reality device 100 in FIG. 1 , and the main differences between them are as follows. In this embodiment, the diffractive optical element 120 is disposed between the first surface S1 and the second surface S2 of the spectacle lens 110 . In this embodiment, the spectacle lens 110 may further include a first sub-lens 112 and a second sub-lens 114 , and the diffractive optical element 120 is disposed between the first sub-lens 112 and the second sub-lens 114 . Specifically, the first sub-lens 112 includes a first surface S1 of the spectacle lens 110 and a fifth surface S5 facing away from the first surface S1, and the second sub-lens 114 includes a second surface S2 of the spectacle lens 110 and a fifth surface S5 facing away from the second surface S1. The sixth surface S6 of the surface S2 is bonded to the third surface S3 and the fourth surface S4 of the diffractive optical element 120 by attaching the fifth surface S5 of the first sub-mirror 112 and the sixth surface S6 of the second sub-mirror 114 respectively, The diffractive optical element 120 is wrapped in the spectacle lens 110 .

The diffractive optical element 120 of this embodiment is similar to the diffractive optical element 120 shown in FIG. 1 and FIG. 2 . The diffractive optical element 120 of this embodiment may have a configuration similar to that of the diffractive optical element 120 in the embodiment of FIG. 1 and FIG. 2 above. In this embodiment, the diffractive optical element 120 is a diffractive optical plate 120b. In other embodiments, the diffractive optical element 120 can also be replaced with a diffractive optical film similar to that shown in FIG. 1 and FIG. 2 .

In this embodiment, the diffractive optical element 120 may be configured so that at least a part of the light beam incident from the third surface S3 of the diffractive optical element 120 is totally reflected between the third surface S3 and the fourth surface S4 of the diffractive optical element 120 . Please refer to FIG. 3 again. In the augmented reality device 100b of this embodiment, the image beam IL output by the projector 140 passes through the first surface S1 of the spectacle lens 110 and is projected to the third surface S3 of the diffractive optical element 120 (Fig. 3). The image beam IL) in the first sub-mirror 112 is omitted from the schematic diagram. Wherein, at least a part of the image light beam IL can enter the diffractive optical element 120 through the third surface S3 from the light incident portion S3 a of the third surface S3 . At least a part of the image light beam IL may be totally reflected between the third surface S3 and the fourth surface S4 of the diffractive optical element 120 after passing through the third surface S3 . At least a part of the image light beam IL can be diffracted on at least one of the third surface S3 and the fourth surface S4 after being totally reflected between the third surface S3 and the fourth surface S4 of the diffractive optical element 120 and can pass through The light emitting portion S3b of the third surface S3 of the diffractive optical element 120 and the first surface S1 of the spectacle lens 110 project to the eye 50 (the image beam IL in the first sub-lens 112 is omitted in the schematic diagram of FIG. 3 ). Wherein, the portion of the diffractive optical element 120 located between the light incident portion S3a and the light exit portion S3b has a light guiding function similar to that of a waveguide element, and can transmit the image light beam IL.

In other embodiments, the diffractive optical element 120 may also be a holographic optical element. When the image beam IL output by the projector 140 passes through the first surface S1 of the spectacle lens 110 and is projected to the third surface S3 of the diffractive optical element 120, The image beam IL can reflectively diffract on the third surface S3 of the diffractive optical element 120 , and project at least a part of the image beam IL through the first surface S1 of the spectacle lens 110 to the eye 50 .

FIG. 4 is a schematic cross-sectional view of an optical device 10c according to another embodiment of the present invention. FIG. 5 is a schematic cross-sectional view of the light shielding element 130 of the optical device 10c in the embodiment of FIG. 4 . Please refer to FIG. 4 , the optical device 10 c of this embodiment is similar to the optical device 10 in FIG. 1 , and the main differences between the two are as follows. In this embodiment, the optical device 10c combining the glasses function and the augmented reality function further includes a light shielding element 130 disposed on the second surface S2 of the glasses lens 110 . The shading element 130 can be fixed on the second surface S2 of the spectacle lens 110 by sticking, or the shading element 130 can be directly fabricated on the second surface S2 of the spectacle lens 110 . The light shielding element 130 includes a plurality of strip light shielding structures 132 . As shown in FIG. 4, a plurality of strip-shaped light-shielding structures 132 can absorb or reflect stray light beams SL (for example: direct sunlight beams) from the external environment, but real-world light beams OL from the object O (for example: user The light reflected by the trees in the field of vision) can enter the eyes 50 of the user from the gaps between the plurality of strip-shaped light-shielding structures 132 . Through the shading element 130 , the optical device or the augmented reality device of the present invention can shield the stray light beam SL to reduce the stray light entering the user's eyes 50 , but allow most of the reality light beam OL to pass through. Therefore, when the optical device or the augmented reality device of the present invention is used outdoors, it is less likely to be affected by external stray light.

In some embodiments, the light shielding element 130 may further include a base film 134 disposed between the strip light shielding structure 132 and the second surface S2 of the spectacle lens 110 . Please refer to FIG. 4 and FIG. 5 , the shading element 130 of this embodiment is a film comprising a plurality of strip-shaped light-shielding structures 132, and the plurality of strip-shaped light-shielding structures 132 are arranged on the base film 134, and the base film 134 is attached. on the second surface S2 of the spectacle lens 110 . In some embodiments, the base film 134 may further have a plurality of strip-shaped transparent structures 134a, and the plurality of strip-shaped transparent structures 134a are embedded with the plurality of strip-shaped light-shielding structures 132 . That is to say, the plurality of strip-shaped light-shielding structures 132 may be disposed in the groove formed by the plurality of strip-shaped transparent structures 134a. For example, a plurality of strip-shaped transparent structures 134a can be produced by, for example, curing by ultraviolet rays, and a plurality of strip-shaped light-shielding structures 132 can be formed between adjacent strip-shaped transparent structures 134a after the plurality of strip-shaped transparent structures 134a are formed. It is formed by filling the light-absorbing material in the groove. As shown in FIG. 5 , the light-shielding element 130 of this embodiment may have a connecting portion 133 formed of a light-absorbing material between adjacent strip-shaped light-shielding structures 132, and the connecting portion 133 has a thinner thickness than the strip-shaped light-shielding structure 132. Therefore, the connecting portion 133 will not have a great impact on the light penetration. In other embodiments, multiple strip-shaped light-shielding structures 132 can also be directly arranged on the surface of the spectacle lens 110, for example, grooves can be made on the second surface S2 of the spectacle lens 110 and filled with light-absorbing materials to form multiple Strip light-shielding structure 132 . Transparency as used herein means allowing light to pass through. In the embodiment of the present invention, the light transmittance of the strip-shaped transparent structures 134 a is higher than that of the strip-shaped light-shielding structures 132 .

In some embodiments, other film layers (not shown) can be further arranged between the shading element 130 and the second surface S2 of the spectacle lens 110 according to usage requirements, or the shading element 130 is facing away from the second surface. Other film layers (not shown) are disposed on the seventh surface S7 of S2. In this embodiment, each strip-shape light-shielding structure 132 is arranged along a substantially horizontal direction to shield stray light from above, and can maintain a wide viewing area in the horizontal direction while shielding stray light.

In addition, in this embodiment, the plurality of strip-shaped light-shielding structures 132 can be made of black light-shielding material such as black dye. In some embodiments, photochromic materials (eg, materials containing silver chloride or other halogens) can also be used to make the strip-shaped light-shielding structures 132 , which can be transformed into light-shielding materials under strong ambient light. The present invention is not limited thereto.

Further, in this embodiment, the plurality of strip-shaped transparent structures 134a meet: H/W≧1, wherein H is the depth of the strip-shaped transparent structures 134a, and W is the distance between the bottoms of the strip-shaped transparent structures 134a. Under this condition, the strip-shaped light-shielding structure 132 can have a relatively deep depth H, and the effect of shielding stray light is good. In addition, the strip-shaped transparent structure 134a of this embodiment has a trapezoidal cross-section A. As shown in FIG. On the cross-section shown in FIG. 5 , the cross-section A of the strip-shaped transparent structure 134 a is trapezoidal. As will be explained below, setting the cross-section A of the strip-shaped transparent structure 134 a in a trapezoidal shape facilitates the fabrication of the base film 134 .

FIG. 6 is a schematic diagram of a manufacturing device 20 for manufacturing a light shielding element 130 according to an embodiment of the present invention. In this embodiment, the manufacturing device 20 includes a roller set 22 , mold rollers 24 , glue injection equipment 26 and lighting equipment 28 . The roller set 22 may include a first roller 22a, a second roller 22b, a first auxiliary roller 22c, and a second auxiliary roller 22d. In this embodiment, the film material 21 is fixed on the first roller and the second roller 22b, wherein the film material 21 can be made of any material. In this embodiment, the film material 21 is a light-permeable material film layer. The mold roller 24 may have a plurality of tooth molds. In this embodiment, the tooth molds have a trapezoidal cross section to form a strip structure with a trapezoidal cross section, but the invention is not limited thereto. Arranging the tooth mold to have a trapezoidal cross-section facilitates the subsequent demoulding procedure.

When the manufacturing device 20 of this embodiment is used to manufacture the base film 134 or the light shielding element 130 , the first roller 22 a unfolds the film material 21 and transports it toward the mold roller 24 . The first auxiliary roller 22c sandwiches the film material 21 between the first auxiliary roller 22c and the mold roller 24 , and the second auxiliary roller 22d sandwiches the film material 21 between the second auxiliary roller 22d and the mold roller 24 . The glue injection device 26 injects the glue material between the film material 21 and the mold roller 24 . The lighting device 28 can be arranged on the side of the film material 21 facing away from the mold roller 24. When the film material 21 passes through the lighting device 28, the lighting device 28 can emit a beam of light to make the glue injected between the film material 21 and the mold roller 24 The material is solidified, and a strip structure 30 corresponding to the shape of the tooth mold is formed on the film material 21 . In this embodiment, the adhesive material may be, for example, an ultraviolet light curing material, and the lighting device 28 may be, for example, an ultraviolet light lamp, but the present invention is not limited thereto. After the strip structure 30 is solidified and formed, the second roller 22b rolls the finished strip structure 30 together with the film material 21 and takes it back. FIG. 6 shows the finished strip structure 30 , which can be used as a plurality of strip transparent structures 134 a of the base film 134 . In some embodiments, light-absorbing materials may also be filled in the plurality of grooves between the strip structures 30 before winding, and the present invention is not limited thereto.

To sum up, in the optical device and the augmented reality device of the embodiments of the present invention, glasses with augmented reality effects can be provided by combining the diffractive optical element with the lens of the glasses. In addition, in some embodiments, the optical device and the augmented reality device of the present invention can be provided with light-shielding elements to shield stray light and improve user experience.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (11)

1. An optical device combining glasses function and augmented reality function, characterized in that it is suitable for making ambient light beam incident to the user's eyes, said optical device comprising: a spectacle lens having a first surface facing the eye and a second surface facing away from the eye; a diffractive optical element arranged on the first surface of the spectacle lens or between the first surface and the second surface of the spectacle lens, the diffractive optical element having a a third surface and a fourth surface facing away from the eye, wherein the diffractive optical element is a diffractive optical film or a diffractive optical plate; and A light-shielding element is arranged on the second surface of the spectacle lens, and the light-shielding element includes a plurality of strip-shaped light-shielding structures. 2. The optical device combining glasses function and augmented reality function according to claim 1, wherein the glasses lens includes a first sub-lens and a second sub-lens, and the diffractive optical element is arranged on the between the first sub-lens and the second sub-lens. 3. The optical device combining glasses function and augmented reality function according to claim 1, characterized in that, the diffractive optical element is configured to make the light beam incident from the third surface of the diffractive optical element At least a portion is totally reflected between the third surface and the fourth surface of the diffractive optical element. 4. The optical device combining glasses function and augmented reality function according to claim 1, characterized in that, the shading element further comprises a base film, and the base film is arranged on the plurality of strip-shaped light-shielding elements. between the structure and the second surface of the spectacle lens, and the base film has a plurality of strip-shaped transparent structures, and the plurality of strip-shaped transparent structures are fitted with the plurality of strip-shaped light-shielding structures, so The plurality of strip-shaped transparent structures have a trapezoidal cross-section. 5. The optical device combining glasses function and augmented reality function according to claim 4, characterized in that, the plurality of strip-shaped transparent structures comply with: H/W≥1, wherein H is the plurality of strips The depth of the strip-shaped transparent structure, W is the interval at the bottom of the plurality of strip-shaped transparent structures. 6. An augmented reality device, characterized in that, comprising: a spectacle lens having a first surface facing an eye of a user of the augmented reality device and a second surface facing away from the eye; a diffractive optical element arranged on the first surface of the spectacle lens or between the first surface and the second surface of the spectacle lens, the diffractive optical element having a a third surface and a fourth surface facing away from the eye, wherein the diffractive optical element is a diffractive optical film or a diffractive optical plate; a projector outputting an image beam, the diffractive optical element is disposed on the transmission path of the image beam, and the diffractive optical element projects the image beam to the eye; and a shading element, arranged on the second surface of the spectacle lens, the shading element comprising a plurality of strip-shaped shading structures; Wherein, the ambient light beam from the external environment is transmitted to the eye after penetrating through the spectacle lens and the diffractive optical element. 7. The augmented reality device according to claim 6, wherein the image beam is projected onto the third surface of the diffractive optical element; wherein at least a part of the image beam is passing through the After the third surface, total reflection occurs between the third surface and the fourth surface of the diffractive optical element, and wherein at least a portion of the image beam is on the third surface of the diffractive optical element After total reflection with the fourth surface, diffraction occurs on at least one of the third surface and the fourth surface and is projected to the eye through the third surface. 8. The augmented reality device according to claim 6, wherein the image beam is projected onto the third surface of the diffractive optical element; Reflective diffraction occurs on the third surface and projects at least a portion of the image beam to the eye. 9. The augmented reality device according to claim 6, wherein the spectacle lens comprises a first sub-lens and a second sub-lens, and the diffractive optical element is disposed between the first sub-lens and the second sub-lens. between the second sub-lens. 10. The augmented reality device according to claim 6, wherein the shading element further comprises a base film, and the base film is arranged between the plurality of strip shading structures and the spectacle lens. between the second surfaces, and the base film has a plurality of strip-shaped transparent structures, the plurality of strip-shaped transparent structures are embedded with the plurality of strip-shaped light-shielding structures, and the plurality of strip-shaped transparent structures Has a trapezoidal cross section. 11. The augmented reality device according to claim 10, wherein the plurality of strip-shaped transparent structures meet: H/W≥1, wherein H is the depth of the plurality of strip-shaped transparent structures, W is the interval at the bottom of the plurality of strip-shaped transparent structures.