JPWO2020246256A1 - Glasses type image display device - Google Patents

Abstract

In a spectacle-type image display device including an image output unit that emits image light, which is light containing image information, toward the lens surface of the spectacles, a diffractive optical system element (transmission hologram) that duplicates the image light emitted from the image output unit. 20A) and each of the duplicated lights reacts independently (for example, reflects independently), and each light after the reaction during the reaction is directed toward the eyes of the user wearing the eyeglass-type image display device. A direction adjusting optical system element (reflection hologram 30A) for adjusting the direction so as to proceed in parallel directions with each other is provided.

Description

The present invention relates to a spectacle-type image display device. The "image" shall include a still image and a moving image.

Conventionally, a spectacle-type image display device that displays an image on the lens surface of spectacles is known (see, for example, Patent Document 1). In the spectacle-type image display device described in Patent Document 1, an image is projected from a direction perpendicular to the lens surface of the spectacles. Further, in recent years, in order to make the spectacle-type image display device smaller and easier to handle, a technique of projecting an image obliquely from the temple side of the spectacles on the lens surface of the spectacles has been known.

Japanese Unexamined Patent Publication No. 2016-131270

In the technical field related to the spectacle-type image display device as described above, the range in which the image can be seen even if the user wears the spectacle-type image display device is called "Eyebox", and the user wears the spectacle-type image display device. Enlarging the Eyebox is indispensable for stable image viewing.

As a technique related to a conventional eyeglass-type image display device, for example, there is a retinal projection method in which image light is projected toward the user's eye, and in this retinal projection method, the diffused light of the pixels forming a virtual image is as thin as possible. , It is in a state close to parallel, and is known as a method in which there is no influence of refraction of light in a human crystalline lens or it is very small. This retinal projection method was known as a method in which the Eyebox was narrow, but a method of expanding the Eyebox is also being studied. However, in that case, it was pointed out that there is a limit to the viewing angle. As described above, in the conventional technology related to the spectacle-type image display device, it has been a problem to enlarge the Eyebox while maintaining a wide viewing angle.

The present invention has been made in view of the above, and an object of the present invention is to provide a spectacle-type image display device capable of magnifying an Eyebox while maintaining a wide viewing angle.

The spectacle-type image display device according to one embodiment of the present invention is a spectacle-type image display device including an image output unit that emits image light, which is light including image information, toward the lens surface of the spectacles. The diffractive optical system element that duplicates the image light emitted from the output unit and the respective light duplicated by the diffractive optical system element react independently, and each light after the reaction during the reaction is the spectacle type. It includes an optical system element for direction adjustment that adjusts the direction so as to advance in a direction parallel to each other toward the eyes of the user wearing the image display device.

In such a spectacle-type image display device, image light, which is light containing image information, is emitted from the image output unit toward the lens surface of the spectacles, and the emitted image light is duplicated by the diffractive optical system element. Then, the direction adjusting optical system element reacts independently to each of the duplicated lights, and each light after the reaction at the time of the reaction is directed to the eyes of the user wearing the spectacle-type image display device. Adjust the direction so that it goes in parallel directions. Each light after the above reaction travels in a direction parallel to each other toward the user's eye, and is recognized by the user as light coming from the same direction. Therefore, it is possible to enlarge the Eyebox, which is the range in which the image can be seen even if the user moves his / her eyes. On the other hand, the details will be described later with reference to FIG. 4A and the like. For example, in the diffractive optical system element and the direction adjusting optical system element configured by the hologram, the angle of the object light at the time of creation (exposure) is different. Since it is the viewing angle during reproduction, it is possible to widen the viewing angle during reproduction by adjusting the angle of the object light at the time of creation (exposure). In this way, the Eyebox can be magnified while maintaining a wide viewing angle.

According to the present invention, it is possible to provide a spectacle-type image display device capable of magnifying an Eyebox while maintaining a wide viewing angle.

It is a figure which shows typically the spectacles type image display device. It is a figure which shows the 1st aspect which concerns on the duplication and reflection of light. It is a figure for demonstrating the interval of the duplicated light. (A) is a diagram for explaining the creation of the hologram, and (b) is a diagram for explaining the reproduction in the hologram. (A) is a diagram for explaining the regenerated light when a scan display is used, and (b) is a diagram for explaining the regenerated light when a flat display is used. It is a figure for demonstrating the structure for molding the reproduced light more finely. It is a figure for demonstrating multiple recording of a hologram. It is a figure which shows the 2nd aspect which concerns on the duplication and reflection of light. It is a figure for demonstrating the 3rd aspect using a waveguide. It is a figure for demonstrating the outline of a waveguide. (A) is a diagram for explaining the whole image of the reproduced light, and (b) is a diagram showing one unit forming (a). It is a figure which shows the hardware configuration example of a control part.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted.

FIG. 1 is a diagram schematically showing a spectacle-type image display device 1 according to an embodiment of the invention. The spectacle-type image display device 1 is a display device that displays an image (still image and moving image) on the lens surface of the spectacles so that a user wearing spectacles (hereinafter, simply referred to as “user”) can visually recognize the image. be. The spectacle-type image display device 1 causes the user to visually recognize an image by incident the image light emitted from the image display unit 10 attached to the temple 52 of the spectacles into the pupil of the user. As the illumination light used for the display display in the image display unit 10, LED (Light Emitting Diode) light may be used, or laser light may be used.

The spectacle-type image display device 1 includes a basic configuration of spectacles, and as shown in FIG. 1, a pair of lenses 50 corresponding to both eyes and a bridge 51 connecting frames for holding the lenses 50 of both eyes. , And a pair of temples 52 that are continuous with the frame that holds the lenses 50 of both eyes and are fixed to the user's temporal region. The lens 50 reflects at least a portion of the incident (projected) image light toward the user's pupil. The image light reflected on the incident surface of the lens 50 forms an image as a virtual image when viewed from the pupil. This makes it possible for the user to visually recognize the image. The glasses-type image display device 1 may have a speaker (not shown) that outputs sound according to the image at a position corresponding to the user's ear on the temple 52.

The spectacle-type image display device 1 includes an image display unit 10. The image display unit 10 includes a content storage unit 11, an image output unit 12, and a control unit 13. Of these, the image output unit 12 is arranged on the temple 52, for example. The spectacle-type image display device 1 has each configuration of the above-mentioned image display unit 10 corresponding to each of both eyes, but the functions of the configurations corresponding to each of the two eyes are the same. , In the following description, only the configuration corresponding to one eye will be described.

The content storage unit 11 is configured to store content to be visually recognized by the user, and the content to be visually recognized by the user is an image projected on the lens 50 in the present embodiment. The content storage unit 11 may be arranged on the temple 52 or may be arranged at a position away from the temple 52.

The image output unit 12 is configured to output image light, which is light including image information, acquires image information from the content storage unit 11 by wire or wireless connection, and emits image light related to the acquired image information. The image output unit 12 includes a light source and a display, and the irradiation light emitted from the light source is reflected by the display and output as image light including image information.

The control unit 13 is a circuit that performs various types of control. The hardware configuration of the control unit 13 will be described later. The control unit 13 outputs a predetermined control signal to the image output unit 12, for example, so that the image output unit 12 acquires an image from the content storage unit 11 and emits image light.

[Characteristics of glasses-type image display device 1]
From a functional aspect, the spectacle-type image display device 1 reacts independently with the "diffractive optical system element" that duplicates the image light emitted from the image output unit 12 and each of the duplicated lights. It is equipped with a "direction adjustment optical system element" that adjusts the direction of each light after the reaction toward the user's eye in a direction parallel to each other during the reaction, and adopts various aspects shown below. Can be done.

(First aspect)
Hereinafter, the first aspect of the above-mentioned diffractive optical system element and the direction adjusting optical system element will be described. As shown in FIG. 2, in the first aspect, the diffractive optical system element is composed of a transmission hologram 20A that duplicates the image light emitted from the image output unit 12 into a plurality of lights and transmits the light, and is used for direction adjustment optics. The system element independently reflects a plurality of lights transmitted by the transmission hologram 20A, and each light reflected at the time of the reflection is parallel to each other toward the eyes of the user wearing the spectacle-type image display device 1. It is composed of a reflection hologram 30A, which adjusts the direction so as to proceed in the same direction. "Proceeding in parallel directions" here means that image light from pixels at the same position in the same image is duplicated and reflected, and then travels in parallel directions toward the user's eyes. .. The transmission hologram 20A is formed on the surface of the spectacle lens surface 50A near the user's eye (lower surface in FIG. 2), and the reflective hologram 30A is formed on the surface of the spectacle lens surface 50A on the side far from the user's eye (in FIG. 2). It is formed on the upper surface). Here, an example in which both the diffractive optical system element and the direction adjusting optical system element are composed of a hologram is shown, but in addition to the hologram, a laminated diffraction grating or the like may be used.

FIG. 2 shows the light A and B at the ends of the image light, and the paths of the transmitted light and the reflected light thereof for the sake of explanation. The transmitted hologram 20A duplicates the incident image light A into a plurality of lights A1, A2, and A3 and transmits the transmitted hologram 20A, and the reflected hologram 30A independently reflects the plurality of lights A1, A2, and A3 at the time of the reflection. The reflected light AR1, AR2, and AR3 are directed toward the user's eye so as to travel in directions parallel to each other. Similarly, the transmitted hologram 20A replicates the incident image light B to a plurality of lights B1, B2, and B3 and transmits the transmitted hologram 20A, and the reflected hologram 30A independently reflects the plurality of lights B1, B2, and B3 to reflect the light B1, B2, and B3. The direction of the light BR1, BR2, and BR3 reflected at the time of the above adjustment is adjusted so as to travel in a direction parallel to each other toward the user's eye. When the image light is duplicated by the transmission hologram 20A as described above, it is desirable to adjust so that the degree of aberration of each light after duplication is the same. Specifically, in FIG. 2, the duplicated lights A1 and B1 are adjusted to be parallel to each other. Similarly, the duplicated lights A2 and B2 are adjusted to be parallel, and the duplicated lights A3 and B3 are adjusted to be parallel. By adjusting the duplicated light rays so that they travel in parallel as described above, it is possible to adjust the aberrations of the duplicated lights A1, A2, and A3 from the image light A to be the same. Similarly, the image. The degree of aberration of each of the light B1, B2, and B3 duplicated from the light B can be adjusted to be the same. The above-mentioned direction adjustment function is realized by using multiple recording of holograms described later.

As shown in FIG. 3, the reflected lights AR1 and BR1 converge on the pupil of the user, for example, the reflected lights AR2 and BR2 also converge on the pupil, and the reflected lights AR3 and BR3 also converge on the pupil. A plurality of lights duplicated as described above are incident on the user's pupil, and the Eyebox has a range W2 according to the number of rays arranged in parallel. Although FIG. 3 is an example, the interval W1 for arranging a plurality of lights is preferably about 2 mm in a bright environment and about 5 mm in a dark environment, and is designed so that two or more light rays enter the pupil.

Here, the creation (exposure) and reproduction of the hologram will be outlined. As shown in FIG. 4A, a hologram is created (exposed) by a wavefront (object light) shown by a broken line and a wavefront (reference light) shown by a solid line. For reproduction, the non-diffused image light shown by the solid line in FIG. 4B is used as the reproduction light. At this time, the main ray of the image light is aligned with the reference light (solid line in FIG. 4A) at the time of exposure. As a result, the dotted line light having a wide viewing angle is reproduced in FIG. 4 (b). Here, since the angle of the object light at the time of hologram creation (exposure) is the viewing angle at the time of reproduction, the angle of the object light at the time of hologram creation (exposure) is adjusted to widen the viewing angle at the time of reproduction. be able to.

Next, the reproduction optical system will be outlined with reference to FIGS. 5 (a) and 5 (b). As shown in FIG. 5A, when the light source of the reproduced light is a scan display, the direction of the light rays of the scan display is set to match the direction of the reference light rays at the time of hologram exposure. Further, as shown in FIG. 5B, when the light source of the reproduced light is a flat display (for example, Liquid crystal on silicon (Lcos) (registered trademark)), the adjusting lens 60 is used to generate the reproduced light. The direction of the main ray is set to match the direction of the reference ray at the time of hologram exposure. In the above configuration, even if the angle X in FIG. 5A and the angle Y in FIG. 5B are narrow, as described above based on FIGS. 4A and 4B, at the time of hologram creation (exposure). By adjusting the angle of the object light, there is an advantage that a wide viewing angle can be achieved during reproduction.

In displays such as Lcos (registered trademark) and DMD (Digital Micromirror Device), which are widely used in general, the pixel size is small, so the pixels act like a diffraction grating (slit) and the display light (reproduced light) is diffused. It is known. Therefore, as shown in FIG. 6, a molding lens 61 (molding optical system element) for molding the diffused reproduced light into a finer shape may be further provided. In this case, blurring of the image can be prevented and high resolution can be achieved.

As described above, the reflected hologram 30A of FIG. 2 independently reflects a plurality of lights A1, A2, and A3, and the light AR1, AR2, and AR3 reflected at the time of the reflection are directed toward the user's eye and are directed to each other. Adjust the direction so that it goes in parallel directions. Such a direction adjustment function is realized by utilizing multiple recording of holograms. Multiple hologram recording is a recording method for creating a plurality of interference fringes on one hologram, and is actually realized in a thick volumetric hologram. As shown in FIG. 7, if multiple hologram recording is performed, even if a plurality of light rays are incident on the spectacle lens surface at one time, the hologram provided on the spectacle lens surface (hologram with multiple recording) can be obtained. The light rays can be configured to be independently reflected in any direction. For example, in FIG. 7, even if the light rays X1 and Y1 are incident on the spectacle lens surface at one time, the hologram X formed on the spectacle lens surface reflects the light rays X1 in the direction of the arrow X2 and is also formed on the spectacle lens surface. The hologram Y can be configured to reflect the light ray Y1 in the direction of the arrow Y2 independently. Here, the hologram X and the hologram Y can be formed as a volumetric hologram in the form of a single film. At that time, due to the angle dependence of the hologram, the hologram X reacts to the light ray X1, but does not react to the light ray Y1 incident at an angle different from the light ray X1. Further, the hologram Y reacts to the light ray Y1, but does not react to the light ray X1 incident at an angle different from that of the light ray Y1. This makes it possible to realize a configuration in which a plurality of lights incident at different angles are independently reflected.

(Second aspect)
Next, a second aspect of the diffractive optical system element and the direction adjusting optical system element will be described. As shown in FIG. 8, in the second aspect, the diffractive optical system element is composed of a reflection hologram 30B that duplicates and reflects the image light emitted from the image output unit 12 into a plurality of lights, and is used for direction adjustment. The optical system element independently transmits a plurality of lights reflected by the reflected hologram 30B, and adjusts the direction so that each light transmitted at the time of the transmission travels toward the user's eye in a direction parallel to each other. It is composed of a transmission hologram 20B. The transmission hologram 20B is formed on the surface of the spectacle lens surface 50B close to the user's eye (lower surface in FIG. 8), and the reflective hologram 30B is formed on the surface of the spectacle lens surface 50B far from the user's eye (in FIG. 8). It is formed on the upper surface). Here, an example in which both the diffractive optical system element and the direction adjusting optical system element are composed of a hologram is shown, but in addition to the hologram, a laminated diffraction grating or the like may be used.

For the sake of explanation, FIG. 8 shows the light C and D at the ends of the image light, and the paths of the transmitted light and the reflected light thereof. The reflected hologram 30B replicates the incident image light C to a plurality of lights C1, C2, and C3 and reflects the light, and the transmitted hologram 20B independently transmits the plurality of lights C1, C2, and C3, and at the time of the transmission. The transmitted light CR1, CR2, and CR3 are directed toward the user's eye so as to travel in directions parallel to each other. Similarly, the reflected hologram 30B duplicates and reflects the incident image light D to a plurality of lights D1, D2, D3, and the transmitted hologram 20B independently transmits the plurality of lights D1, D2, D3 and transmits the light. At this time, the transmitted light DR1, DR2, and DR3 are directed toward the user's eye so as to travel in directions parallel to each other. The above-mentioned direction adjustment function is realized by utilizing the above-mentioned multiple recording of the hologram as in the first aspect.

As shown in FIG. 8, the reflected lights CR1 and DR1 converge on the pupil of the user, similarly, the reflected lights CR2 and DR2 also converge on the pupil, and the reflected lights CR3 and DR3 also converge on the pupil. A plurality of lights duplicated as described above are incident on the user's pupil, and the Eyebox has a range W2 according to the number of rays arranged in parallel. Although FIG. 8 is an example, the interval W1 for arranging a plurality of lights is preferably about 2 mm in a bright environment and about 5 mm in a dark environment, and is designed so that two or more light rays enter the pupil. Further, in the second aspect, the technical matters described with reference to FIGS. 4 to 7 are the same as those in the first aspect.

(Third aspect)
Next, a third aspect will be described. As shown in FIG. 9, in the third aspect, the diffractive optical system element replicates the image light emitted from the image output unit 12 into a plurality of lights based on the waveguide method, and the duplicated lights are reproduced as described above. It is composed of a waveguide 40 that emits light toward the lens surface of the spectacles.

As shown in FIG. 10, for example, the waveguide 40 includes a waveguide glass 40A and a diffractive optical element 40B. The diffractive optical element 40B reflects the incident light E, reflects it at different points, and emits it as a plurality of lights E1, E2, and E3. Similarly, the diffractive optical element 40B reflects the incident light F, reflects it at different points, and emits it as a plurality of lights F1, F2, and F3. In this way, using the waveguide 40, the image light can be duplicated into a plurality of lights based on the waveguide method, and the plurality of duplicated lights can be emitted toward the lens surface of the spectacles.

FIG. 11A shows an image of a light ray emitted to the spectacle lens surface in the first to third aspects. The large number of light rays shown in FIG. 11 (a) are duplicated by shifting them in the vertical and horizontal directions by a diffractive optical element that duplicates the image light, and by forming a large number of light rays shown in FIG. 11 (b). Generated. In addition, in FIG. 11A, the interval for shifting in the vertical direction and the horizontal direction is designed to be about 2 mm in consideration of being used in a bright environment, for example.

(About the effect)
According to the embodiment of the above-mentioned invention, the direction is adjusted so that the image light travels in a direction parallel to each other toward the eyes of the user wearing the spectacle-type image display device by the configuration of a relatively simple optical system. It is possible to realize a wide range of Eyeboxes. Further, as described above with reference to FIG. 4A, the angle of the object light at the time of hologram creation (exposure) becomes the viewing angle at the time of reproduction, so the angle of the object light at the time of hologram creation (exposure) is adjusted. This makes it possible to widen the viewing angle during reproduction. In this way, the Eyebox can be magnified while maintaining a wide viewing angle.

In the above-mentioned direction adjustment, it is designed so that two or more light rays enter the pupil of the user, and the visibility of the image by the user is enhanced.

Further, as described above with reference to FIG. 6, by further providing a molding lens 61 (molding optical system element) for molding the diffused display light (reproduced light) more finely, blurring of the image is prevented. However, it is possible to increase the resolution.

(others)
Although the spectacle-type image display device according to the embodiment of the present invention has been described above, the present invention is not limited to the above configuration and can be appropriately changed. The image to be displayed for the user may be a moving image (video) or a still image.

Further, the number, arrangement, and the like of the optical components provided in the spectacle-type image display device may at least satisfy the configuration described in the above embodiment, and optical components different from the optical components described in the above embodiment may be in the optical path. It may be provided in.

For example, the control unit 13 in the eyeglass-type image display device 1 may function as a computer. FIG. 12 is a diagram showing an example of the hardware configuration of the control unit 13. The control unit 13 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. For each function in the control unit 13, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an calculation, and the communication by the communication device 1004, the memory 1002, and the storage 1003. It is realized by controlling the reading and / or writing of data.

Although the present invention has been described in detail above, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as an amended or modified embodiment without departing from the spirit and scope of the present invention as determined by the description of the scope of claims. Therefore, the description of the present specification is for the purpose of exemplary explanation and does not have any limiting meaning to the present invention.

The order of the processing procedures of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described herein present elements of various steps in an exemplary order and are not limited to the particular order presented.

The input / output information and the like may be stored in a specific place (for example, a memory) or may be managed by a management table. Information to be input / output may be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

Each aspect / embodiment described in the present specification may be used alone, in combination, or may be switched and used according to the practice. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, and may be implicit (for example, the notification of the predetermined information is not performed). good.

The terms described herein and / or the terms necessary for understanding the present specification may be replaced with terms having the same or similar meanings.

Further, the information, parameters, etc. described in the present specification may be represented by an absolute value, a relative value from a predetermined value, or another corresponding information. ..

The names used for the parameters mentioned above are not limited in any way. Further, mathematical formulas and the like using these parameters may differ from those expressly disclosed herein.

The phrase "based on" as used herein does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

Any reference to elements using designations such as "first", "second" as used herein does not generally limit the quantity or order of those elements. These designations can be used herein as a convenient way to distinguish between two or more elements. Therefore, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.

As long as "including", "comprising", and variations thereof are used herein or within the scope of the claims, these terms are inclusive as well as the term "comprising". Intended to be targeted. Moreover, the term "or" as used herein or in the claims is intended to be non-exclusive.

A plurality of devices are also included herein unless it is shown in the context or technically that there is only one device.

1 ... glasses-type image display device, 10 ... image display unit, 11 ... content storage unit, 12 ... image output unit, 13 ... control unit, 20A, 20B ... transmission hologram, 30A, 30B ... reflection hologram, 40 ... waveguide, 40A ... Hologram, 40B ... Diffractive optical element, 50 ... Lens, 50A ... Eyeglass lens surface, 50B ... Eyeglass lens surface, 51 ... Bridge, 52 ... Temple, 60 ... Adjustment lens, 61 ... Molding lens, 1001 ... Processor, 1002 ... Memory, 1003 ... Storage, 1004 ... Communication device, 1005 ... Input device, 1006 ... Output device, 1007 ... Bus.

Claims (6)

A spectacle-type image display device including an image output unit that emits image light, which is light including image information, toward the lens surface of the spectacles.
A diffractive optical system element that duplicates the image light emitted from the image output unit, and
Each light replicated by the diffractive optical system element reacts independently, and each light after the reaction reacts in a direction parallel to each other toward the eyes of the user wearing the spectacle-type image display device. An optical system element for direction adjustment that adjusts the direction so as to proceed to
A glasses-type image display device equipped with. The direction adjustment optical system element is
The direction of each light traveling in parallel directions is adjusted so that a plurality of lights are incident on the pupil of the user wearing the spectacle-type image display device.
The spectacle-type image display device according to claim 1. The diffractive optical system element is provided on the lens surface of the spectacles, and is composed of a transmission hologram that duplicates and transmits the image light emitted from the image output unit to a plurality of lights.
The direction adjusting optical system element is provided on the lens surface of the eyeglass, and independently reflects the plurality of light transmitted by the transmission hologram, and each light reflected at the time of the reflection is the eyeglass type. It is composed of a reflective hologram that adjusts the direction toward the eyes of the user wearing the image display device so as to proceed in directions parallel to each other.
The spectacle-type image display device according to claim 1 or 2. The diffractive optical system element is provided on the lens surface of the spectacles, and is composed of a reflective hologram that duplicates and reflects the image light emitted from the image output unit into a plurality of lights.
The direction adjusting optical system element is provided on the lens surface of the spectacles, and the plurality of lights reflected by the reflected hologram are independently transmitted, and each light transmitted at the time of the transmission is the spectacle type. It is composed of a transmission hologram that adjusts the direction toward the eyes of the user wearing the image display device so as to proceed in directions parallel to each other.
The spectacle-type image display device according to claim 1 or 2. The diffractive optical system element replicates the image light emitted from the image output unit into a plurality of light based on the waveguide method, and emits the duplicated light toward the lens surface of the spectacles. , Consists of,
The spectacle-type image display device according to claim 1 or 2. A molding optical system element for molding the image light emitted from the image output unit into a finer shape.
The spectacle-type image display device according to any one of claims 1 to 5.

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