WO2005124430A1

WO2005124430A1 - Electronic spectacle device

Info

Publication number: WO2005124430A1
Application number: PCT/JP2005/010981
Authority: WO
Inventors: Eiji Shimizu
Original assignee: Japan Science And Technology Agency
Priority date: 2004-06-16
Filing date: 2005-06-15
Publication date: 2005-12-29
Also published as: JP2007271643A

Abstract

It is possible to easily and stably match the converging point of the Maxwell vision with a range of the eye pupils by using a simple configuration. An electronic spectacle device includes: an electronic spectacle main body (2) where an image light of high directivity using the Maxwell vision is emitted; an eye cup (3) for fixing the position of a display screen formation unit (ocular lens 105) by the Maxwell vision for around the eyes; and a grip (4) fixed to the lower surface of the electronic spectacle main body (2) for holding the electronic spectacle main body (2) by user’s hand and matching the conversing point of the image light from the electronic spectacle body (2) with the pupils.

Description

Specification

Electronic glasses equipment

Technical field

The present invention relates to an electronic glasses device using a display device for projecting an image on a retina by Maxwell vision.

Background art

[0002] Conventionally, magnified reading devices have been used by people with low vision. The magnifying reader is, for example, an image of a newspaper character or the like taken by a CCD camera, and the taken image is enlarged and displayed on a display screen such as a liquid crystal display screen. The reason for enlarging the image is that if the lens of the eyeball is degraded and the retina is not in focus, the displayed image on the LCD screen will appear blurry, but the image will be enlarged even if the displayed image blurs slightly. This is because characters can be recognized as such.

[0003] In addition, the number of people whose central part of the retina is damaged or the function of the crystalline lens is extremely deteriorated in association with aged dani is increasing. It is difficult for such a person to use a conventional magnifying device. The reason for this is that characters such as newspapers are photographed with a CCD camera, the photographed image is enlarged and displayed on a display screen such as a liquid crystal display screen, and the image on the display screen is viewed with one's own eyes. It is. In other words, the user views the image on the display screen by using the retina of his own eye whose center is damaged or the lens of his own eye whose function is extremely deteriorated.

[0004] On the other hand, in Maxwell vision, image light is emitted rather than diffused light and has relatively high directivity, and when the image light is injected into the pupil of the eye, the depth of focus is deep. Even if you have low vision, where the function of the crystalline lens and cornea of the eyeball is extremely low and you can not see clearly even with glasses, the retina is in focus and the image is not blurred and clear without blurring It can be seen in In this way, in Maxwell's vision, by projecting only parallel rays, a clear image is reflected regardless of where the retina (screen) is in the projection direction, and the image looks clear regardless of the focus adjustment function of the lens Therefore, focusing is not required, and there is no need to enlarge the displayed image as in a conventional magnifying reader. In addition, Maxwell's vision does not use the lens's focus adjustment function but only projects directly onto the retina, making the eyes extremely tired. Yes.

[0005] This Maxwell view will be further described. Maxwell vision is a principle of a pinhole camera, as shown in Fig. 7 (a), and a liquid crystal display screen 100 that displays images based on video signals by irradiating parallel rays from behind, a pinhole plate 101, A lens 102 for condensing the image light from the liquid crystal screen 100 on the pinhole 101a of the pinhole plate 101, and a lens 103 for filtering the parallel light by returning the image light from the pinhole 101a to the parallel light. It can be realized by a combination of an optical system with an eyepiece 105 for converging parallel rays from the lens 103 in the pupil 104. Further, as shown in FIG. 7 (b), the image light A not exiting from the pinhole 101a of the pinhole plate 101 is cut off as a diffused light around the pinhole 101a, so that the image light A exiting from the pinhole 101a is emitted. B is only image light with high directivity.

[0006] As described above, in Maxwell vision, the image projected on the liquid crystal screen 100 is not focused using the focusing function of the crystalline lens 106 of the eye, unlike a conventional magnifying reader. An image can be projected directly on the retina 107. Using this Maxwell vision, it is also possible to selectively project an image to any retinal position where the retina 107 is not damaged. That is, in the case of a person whose retina is partially damaged, the path of light can be set so that image light is projected on a normal retina portion.

[0007] Furthermore, in Maxwell vision, as described above, there is a drawback due to the power that can be seen even if the imaging ability by the lens 106 and the cornea is poor. That is, the convergence point X where Maxwell's vision converges must be located in the pupil 104. The image cannot be seen unless the convergence point X of the Maxwell's vision matches the pupil 104. The pupil 104 has a diameter of about 4 mm, and the convergence point X of Maxwell's vision must fall within this range.

[0008] Non-Patent Document 1 discloses a paper in which this was used for mopiling and experiments were performed for people with low vision. In this non-patent document 1, a display (retinal projection type display device) that scans with a laser and projects image light onto a retina 107 is used for a mono-camera. Fix it according to! /

[0009] In addition, an image capable of giving a clear image to an eye disease patient using Maxwell's vision. An image providing apparatus is disclosed as Patent Document 1 by the inventor of the present invention. Non-Patent Document 1: Journal of Visual Impairment and Blindness March 200

4; `` A Comparative With a Head-mounted Laser Display and Conventional Low Vision Devices '' P148 to P159

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-282299

Disclosure of the invention

Problems to be solved by the invention

[0010] While the user is wearing the above-mentioned conventional retinal projection display device using Maxwell's vision with a headband on the head, when observing the image from the retinal projection display device, the image is first placed on the pupil. Users who find it difficult to fix the convergence point to find the video took too long. Furthermore, even if the position of the pupil is constant, a predetermined shape along the face (easily changeable), hairstyle, etc., which is a user-specific living body, is used so that the image portion is located within the range of the pupil for mopiling. It was very difficult to stably fix it in place with a headband. Furthermore, this retinal projection display device is configured so that it can be mounted on the head integrally with the headset, and although it is a mechanism that has a certain degree of three-dimensional positional freedom, it is not so flexible. At the same time, the required force to match the convergence point of the image and the pupil had to be fixed at a predetermined position, which resulted in a complicated mechanism and a large-hanging mechanism.

[0011] The present invention solves the above-mentioned conventional problems, and has a simpler configuration, and can easily and stably set the convergence point of Maxwell vision within the range of the pupil of the eye. It is intended to provide a device.

Means for solving the problem

[0012] The electronic glasses apparatus of the present invention is an electronic glasses apparatus using a display device for projecting an image on a retina through a pupil of an eye by Maxwell's vision, wherein the directivity using the Maxwell's vision is used. An eyeglass main body from which a high image light is emitted from a display screen of the display device, and a cup-shaped outer periphery of the display screen are provided. Eyecup means that can fix the positional relationship between the display screen and the pupil by touching the display screen, thereby achieving the above object. [0013] Further, the electronic glasses apparatus of the present invention further includes a drip means for supporting the electronic glasses main body attached to the electronic glasses main body.

[0014] Further, the display device in the electronic glasses apparatus of the present invention includes a signal processing unit that performs signal processing on an image signal from the image capturing unit, and a signal processing unit that performs predetermined signal processing on the image signal based on the image signal. A display image forming unit for forming a display image; and a display image light from the display image forming unit. An emission unit.

[0015] Furthermore, the electronic glasses apparatus of the present invention further includes attaching means for attaching or detaching the gripping means and the electronic glasses main body, and the signal processing unit is configured to perform the left-right direction and the up-down direction of the image on the display screen. It has an image inversion switching unit that can switch the inversion of the image.

[0016] Further, the eyecup means in the electronic glasses apparatus of the present invention has one or a plurality of communication holes communicating between the inside and the outside covered in the cup shape.

Further, a coating film for preventing fogging is provided on the surface of the display screen in the electronic glasses device of the present invention.

The operation of the present invention having the above configuration will be described below.

In the present invention, an electronic glasses main body in which image light (parallel rays) is emitted from a display screen of a display device with high directivity using Maxwell's vision, and a cut around the display screen is cut. Eye cup means provided so as to cover in the shape of a pupil, and enabling the positional relationship between the display screen and the pupil to be fixed by applying the outer peripheral edge of the cup shape to the periphery of the eye. In addition, grip means for indicating the electronic glasses body is attached to the electronic glasses body.

[0020] With this, it is easy to attach the cup-shaped eyecup means at the tip of the display screen (eyepiece), quickly fix the convergence point of the image and the position of the pupil, and stably maintain the fixation. Becomes possible. In addition, extraneous light can be blocked, and the original image can be clearly observed. Since the gripping means is attached to the body of the electronic glasses that realizes Maxwell vision, and the user can freely move the body of the electronic glasses by gripping the gripping means, the images can be easily viewed even at first. Can be caught. As a result, the image can be easily captured even at the beginning, and the video can be easily viewed. It is possible to easily and stably set the convergence point of Maxwell vision within the range of the pupil of the eye with a simpler configuration.

[0021] For example, female screws of fastening means are provided as attachment means on the upper and lower sides of the electronic glasses main body, and male threads are provided on one end surface side of the grip means for supporting the electronic glasses main body, and the grip means is replaced vertically. It is possible to easily change between the right eye and the left eye. At this time, it is necessary to switch the upper, lower, left and right scanning directions of the image on the display screen by the image signal (television signal) by the image inversion switching unit.

[0022] As described above, even a low-vision person who can easily wear glasses like ordinary glasses, does not need to focus, and does not have sufficient vision even with glasses, can see images clearly and clearly. Becomes possible. A small liquid crystal display screen (for example, 7 mm long x 9 mm wide; about 200,000 pixels) is raised in front of the eyes to display images from television devices and personal computers, and surroundings captured by a micro camera ( Subject).

The invention's effect

[0023] As described above, according to the present invention, the position of the display screen in Maxwell's view is fixed around the eyeglass body from which the highly directional image light is emitted using Maxwell's view and around the eye. Since the eyecup means is provided, the convergence point of Maxwell vision can be easily and stably adjusted within the range of the pupil of the eye with a simple configuration.

Brief Description of Drawings

FIG. 1 is a perspective view showing a configuration of a main part of hand-held electronic glasses according to Embodiment 1 of the present invention.

FIG. 2 is a front view of FIG. 1.

FIG. 3 is a plan view of FIG. 1.

FIG. 4 is a bottom view of FIG. 1.

FIG. 5 is a rear view of FIG. 1.

FIG. 6 is a perspective view showing a configuration of a main part of hand-held electronic glasses according to Embodiment 2 of the present invention.

[FIG. 7] (a) is a schematic side view of an optical system for explaining a main part configuration of a display screen forming unit in Maxwell view, and (b) is an optical system for explaining the principle of Maxwell view. Outline It is a side view.

Explanation of symbols

[0025] 1, 1A hand-held electronic glasses

2, 2A Electronic glasses body

21, 21A housing

22, 22A cable

23 Display image emission unit

24 cylindrical projection

3 Eye cup

31 Distribution hole

4 grip

101 pinhole plate

101a Pinhonore

102 Condensing lens

103 lens

105 eyepiece

105a Anti-fog filter

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the case where the first and second embodiments of the electronic glasses apparatus of the present invention are applied to hand-held electronic glasses will be described with reference to the drawings.

(Embodiment 1)

FIG. 1 is a perspective view showing a main part configuration of the hand-held electronic glasses according to Embodiment 1 of the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG. 4 is a bottom view of FIG. FIG. 5 is a rear view of FIG.

1 to 5, the hand-held electronic glasses 1 according to the first embodiment include an electronic glasses main body 2 from which image light having high directivity is emitted using Maxwell vision, and an image light emitting unit ( The display screen of the display device; an eyecup 3 as an eyecup means for covering the eyepiece 105) in a cup shape; and affixed to the lower surface of the electronic eyeglass body 2 by screws (attachment means). It has a grip 4 as a grip means for supporting the electronic glasses main body for holding the electronic glasses main body 2 by hand and adjusting the convergence point of the image light from the electronic glasses main body 2 to the pupil.

The electronic glasses main body 2 has a substantially U-shaped bottom view and a rectangular cross section (the vertical cross section may be a circle or an ellipse). A video signal line and a power line cable 22 of image data which are photographed by a CCD camera (not shown) as an imaging means and subjected to predetermined signal processing by a signal processing unit are inserted, and a power line and a video signal line are inserted. A display image forming unit connected to the camera and a screen light emitting unit for Maxwell viewing are built in the housing 21, and a highly directional image light (parallel ray) is output from the display image 23 on the other end side of the housing 21. It is squeezed and emitted.

Although not specifically shown here, the display image forming unit includes, for example, a lamp light source connected to a power supply line and a light source of the lamp light source R (red) and G (green). And B (blue), and a spectral optical system that splits the light into each color, and the spectral light (parallel rays) of each color split by the spectral optical system are illuminated as backlights, and the power supply line and the video signal line are connected. R (red), G (green), and B (blue) transmissive liquid crystal displays that display liquid crystals for each color, and image light of each color from the transmissive liquid crystal displays of each color As a color display image. Alternatively, R (red), G (green), and B (blue) filters are periodically added to a lamp light source connected to the power line (power supply section) and a single-transmission LCD panel illuminated by the lamp light source. And a system for emitting a color display image from the display plate.

Although not particularly shown here, the screen light emitting unit in Maxwell view has the same configuration as the optical system of FIG. 7A, and is emitted from the surface of the combined optical system of the display image forming unit. The focused image light is focused on the pinhole 101a of the pinhole plate 101 by the focusing lens 102, and the highly directional image light emitted from the pinhole 101a is returned to parallel rays by the lens 103 and filtered. After that, the parallel rays are narrowed by the eyepiece 105 so that the parallel rays are emitted so as to converge in the pupil 104 of the user.

[0031] The eyecup 3 is made of a resin material such as silicone rubber or a metal material, and is attached to the other end of the housing 21 to emit highly directional image light using Maxwell's vision. It has an outer shape that covers the periphery of the image light exit surface (display screen) of the eyepiece 105 so that the optical axis of the eyepiece 105 (display screen) to be projected is located at the center of the pupil. . The outer peripheral shape of the eyecup 3 is a shape that fits (fits) a living body shape around the human eye. With this, the cup-shaped outer peripheral edge of the eyecup 3 is brought into contact with the periphery of the eye, and thereby the positional relationship between the eyepiece 105 (display screen) and the pupil, that is, the eye with respect to the image light exit surface of the eyepiece 105 Positioning in the vertical and horizontal directions and the depth direction can be easily performed. The use of the eyecup 3 makes it easy to first find an image projected from the image light exit surface of the eyepiece lens 105.

The eye cup 3 has a plurality of circulation holes 31 around the eye cup 3 so that the eye cup 3 can withstand a long period of use in the shape of a cup covering the user's eyes. RU In addition, a special antifogging film (antifog filter 105a) is coated on the surface of the eyepiece lens 105. As a result, the lens surface does not fog even after long use. Given such an eyecup 3, the user is tired of keeping the pupil of the eye aligned with the convergence point of Maxwell's vision and keeping it fixed. Furthermore, the light can be shielded by the eye cup 3 so that the image can be clearly seen even in a bright place.

[0033] The grip 4 has a cylindrical projection 24 provided at the center of the bottom surface of the housing 21 of the electronic glasses main body 2 so that the external thread portion force at one end of the grip 4 can be balanced both in size and weight. It is fastened and fixed to the female screw part of the vehicle. The female screw portion is also formed on the upper surface of a cylindrical projection 24 provided at the center of the upper surface of the housing 21 of the electronic glasses main body 2. Fig. 1 to Fig. 5 show the force for gripping the grip 4 at the center of the bottom surface of the housing 21 for the right eye.If this grip 4 is replaced with the center of the top surface of the housing 21, the force for the right eye can be used for the left eye. it can. In this case, since the image needs to be turned upside down, left and right, an image inversion processing circuit is provided in the signal processing unit, and switching to switch the image inversion to an image inversion processing circuit having a function to turn image data upside down, left, and right is performed. A switch may be provided. The image inversion processing circuit and the switching switch constitute an image inversion switching unit that can switch the image on the display screen between left and right and up and down. As described above, by holding the grip 4 in hand, the position of the image light emission surface (display screen) at the other end of the housing 21 of the electronic glasses main body 2 is feedback-adjusted, and the image light is emitted from the image light emission surface. The convergence point of the image light can be easily adjusted to the position of the pupil.

[0034] According to the above configuration, by pressing the cup-shaped outer peripheral edge around the eye, the display screen (eyepiece lens 105) of the screen light emitting unit in Maxwell's view is positioned with respect to the pupil of the eye. By providing an eyecup 3 to be fixed together and a grip 4 for holding the electronic glasses main body 2 by hand, the image light emitted from the image light emission surface using Maxwell's view can be configured with a simple configuration. The convergence point and the pupil can be easily and stably aligned at first.

(Embodiment 2)

In the first embodiment, a power having a display image forming unit including a light source lamp and a screen light emitting unit based on Maxwell's view is built in a housing 21 of the electronic glasses main body 2. This is a case where there is no such a grip 4, and a case where the display image forming section including the light source lamp is not built in the casing of the electronic glasses main body, and only the screen light emitting section in Maxwell view is built in.

FIG. 6 is a perspective view showing a main configuration of the hand-held electronic glasses according to Embodiment 2 of the present invention. Members having the same functions and effects as the members in FIG. 1 are denoted by the same reference numerals.

In FIG. 6, the hand-held electronic glasses 1A according to the second embodiment include an electron glasses main body 2A that emits highly directional image light using Maxwell vision, and a light-emitting portion of the image light having a cup shape. It has an eye cup 3 that covers the inside.

[0037] The electronic glasses main body 2A is provided with a display image light based on image data photographed by a CCD camera (not shown) and subjected to predetermined signal processing by a signal processing section on one end side of the housing 21A. The optical fiber cable 22A to be propagated is inserted, and only a display screen forming unit for forming a display screen in Maxwell view is built in the housing 21A for the image light emitted from the end face of the optical fiber, The image light with high directivity is emitted from the display image emission section 23 on the other end side of the housing 21A. In the second embodiment, since there is no grip 4 as in the first embodiment, the electronic glasses main body 2A is used by hand.

[0038] With the above configuration, by providing the eyecup 3 for fixing the position of the display screen forming unit (eyepiece lens 105) with respect to the periphery of the eye in Maxwell view, the Maxwell view is used. Thus, the convergence point of the image light emitted from the image light emission surface and the pupil can be easily and stably adjusted from the beginning. In this case, the electronic eyeglass body itself can be configured to be small.

. When the right eye force is also used for the left eye, the hand-held electronic glasses 1A is used by turning it upside down.It is necessary to turn the image data up, down, left, and right. The processing unit may be provided with an image inversion processing circuit and a switching switch so that the image data can be switched so as to be turned upside down, left and right.

Note that, in the first and second embodiments, the force described for the hand-held electronic glasses for one eye is not limited to this. The left and right parts may be connected and used for both eyes. For example, by arranging two handheld electronic glasses 1 or 1A of Embodiments 1 and 2 in series for both eyes, not only healthy persons but also low vision persons can be separated by the left and right eyes. It can be applied to stereoscopic (3D) images where you can see the image and feel the depth.

As described above, the present invention has been described using the preferred embodiments 1 and 2 of the present invention. However, the present invention should not be construed as being limited to the first and second embodiments. It is understood that the scope of the present invention should be construed only by the appended claims. It is understood that a person skilled in the art can implement an equivalent range based on the description of the present invention and the common general technical knowledge from the description of the specific preferred embodiments 1 and 2 of the present invention. Patents, patent applications, and references cited in this specification should be incorporated by reference in their entirety, as if the content itself were specifically described herein. Understood.

Industrial applicability

The present invention relates to a field of electronic glasses using a display device for projecting an image on the retina by Maxwell's vision, and a convergence point of Max. Can be easily and stably combined.

Claims

The scope of the claims

[1] An electronic glasses device using a display device for projecting an image on the retina through the pupil of the eye by Maxwell vision,

A high directivity using the Maxwell's vision, an electronic glasses body from which image light is emitted from a display screen of the display device, and a cup-shaped cover provided around the periphery of the display screen; An eyeglass device comprising: an eyecup means for fixing a positional relationship between the display screen and the pupil by contacting an outer peripheral edge of the shape around an eye.

[2] The electronic glasses apparatus according to claim 1, further comprising a grip means for supporting the electronic glasses body attached to the electronic glasses body.

[3] The display device includes: a signal processing unit that performs signal processing on an image signal from an image capturing unit; and a display image forming unit that forms a display image based on the image signal that has been subjected to predetermined signal processing by the signal processing unit. The image display device according to claim 1, further comprising: a display unit; and an image light emitting unit that emits, from the display screen, image light having high directivity using a Max-Pell vision using display image light from the display image forming unit. Electronic glasses equipment.

[4] There is an attachment means for attaching or detaching the grip means and the electronic glasses main body,

4. The electronic glasses apparatus according to claim 3, wherein the signal processing unit includes an image inversion switching unit configured to switch an inversion of an image on the display screen in a horizontal direction and a vertical direction.

5. The electronic glasses apparatus according to claim 1, wherein the eyecup means has one or a plurality of communication holes communicating the inside and outside covered in the cup shape.

6. The electronic glasses apparatus according to claim 1, wherein a coating film for preventing fogging is provided on a surface of the display screen.