JPH0832898A - Head mounted display - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] In a head-mounted display device using a liquid crystal panel, it is compact and lightweight, and the wearability is stable. Reduce. [Structure] The LED 106 is a light source composed of one or a plurality of semiconductor chips, and can emit a single color or a plurality of lights. One LCD panel 1
No. 02 irradiates those lights from the rear. This L
The emission bright spot of the ED is provided in the vicinity of the focal position of the condenser lens 103 and is incident parallel to the liquid crystal panel surface. The image formed on the liquid crystal panel is formed on the semi-transmissive screen 104 by the projection lens 101 in proportion to the light transmission intensity. This formed image is
A virtual image is formed on the retina of the human eye by one eyepiece 105 having a diameter size equal to or larger than the left and right eye widths.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device which can be mounted on a head and can be used to magnify and view an image on a computer or a television. Regarding

[0002]

2. Description of the Related Art Conventional head-mounted display devices include Japanese Patent Application Laid-Open No. 4-26287 "Glasses-type image display device" and Japanese Patent Application Laid-Open No. 4-2.
3579 "Video display device" and Japanese Patent Laid-Open No. 5-134208
There is a display device such as an “image observation device”.

In these head mounted display devices,
A liquid crystal panel for generating an image is provided on the side surface of the spectacle frame, and a transmission type liquid crystal panel capable of selective transmission of colors corresponding to the pixels of the liquid crystal panel is used to generate images by these liquid crystal panels. The captured image is one that guides the image to the eyepiece of one eye by a mirror and lens, one that distributes information from one liquid crystal panel to two eyes using a plurality of mirrors and lenses, and a concave mirror. As a magnifying means, there is a means for displaying two liquid crystal panels for two eyes.

A color display panel for selecting a color of a liquid crystal backlight and switching images in synchronism with the color is a liquid crystal display having a fluorescent display tube as disclosed in Japanese Patent Laid-Open No. 62-75514 "Color Display Panel". There is an example of a method of improving the resolution by using the back light and driving those color lights in time division.

[0005]

In the information society called multimedia, moving image display and still image display are mixed and displayed. In such a social situation,
There are various types of display devices, and the applications for viewing images by mounting them on the head are increasing. Especially, a display device for immersing yourself in a virtual space called virtual reality. In addition, fields requiring a small and lightweight display just before the eyes such as those for obtaining information in a narrow working space are starting to increase.

The problems with these head-mounted display devices are, firstly, that they are small and lightweight and have excellent wearability. Second
Another issue is how to reduce eye strain caused by seeing a magnified virtual image by providing a display device immediately in front of the eyes. Therefore, like a head-mounted display device as in the conventional example, 2
It becomes very heavy when using the back light of each fluorescent lamp or a lens, and the fluorescent display tube and the white fluorescent tube have a high driving voltage, a complicated driving circuit, and a low power consumption. It has a drawback that it requires 1 W or more and is not low in power consumption. Further, in the conventional example, with respect to the wearability when worn on the head, the display unit for generating and displaying the image in front of the eyes has a drawback that the weight balance is poor because all the display units come in front of the eyes. . Regarding eye strain, the method of guiding the image to each of the left and right eyes by using two liquid crystals is described in "Optical design".
criteria for bionuclear h
elmet-mounted display "SPI
E vol. 778 Display System O
Dr. ptics (1987).
Displaying separate images for the left and right eyes of Self causes problems from the manufacturing stage, and 1) the left and right optical axes are not aligned. 2) The enlargement ratios of the left and right images are different. 3) The display images are not rotated in the same direction. 4) The focus of the left and right images is not the same. Etc. 4
He points out that these problems are difficult to save from eye strain.

An object of the present invention is to solve the above-mentioned problems. One liquid crystal panel is used to generate an image on a screen by a magnifying projection optical system, and the image is viewed with both eyes to obtain two images on the left and right. It is an object of the present invention to provide a head-mounted display device that does not require adjustment of the optical axis and magnification of the liquid crystal panel, the difference between the left and right relative rotation angles, and as a result, significantly reduces eye strain.

Another object of the present invention is to provide a head-mounted display device which is compact and lightweight and is capable of dimming by using an LED liquid crystal backlight.

Further, by using a tilting optical system for projecting a single image into two images by projecting a projection lens corresponding to the interpupillary distances of the left and right eyes, a head for simplifying the interpupillary adjustment and diopter adjustment. An object is to provide a part-mounted display device.

Another object is to realize a wide angle of view by dispersing the magnification of the lens of the projection optical system and the magnification of the Fresnel lens of the image forming optical system, and further to realize the projection optical system and the image formation. An object of the present invention is to provide a head-mounted display device that has an excellent wearability by improving the weight balance at the time of wearing by separating the optical system into the head and the forehead.

Another object of the present invention is to provide a head-mounted display device that is compact when housed by using a means for separating the projection optical system and the imaging optical system and bending between the respective optical paths. is there.

Further, another object is to carry out head-mounted display capable of color display even by using one liquid crystal by selecting color light of LED and changing matrix data of liquid crystal panel in synchronization with it. To provide a device.

[0013]

According to the first aspect of the present invention,
A head-mounted display device in which a liquid crystal panel for forming an image is attached to the side or upper part of the head, and the image displayed on the liquid crystal panel is guided to both eyepieces by reflection or transmission means to form an image on the retina. , LE for emitting colored light
D (Light Emitting Diode), light collecting means for collecting emitted light, one liquid crystal panel for forming an image, a projection lens for projecting an image on the liquid crystal panel, and a screen for projecting the projected image It is characterized by that.

According to a second aspect of the present invention, an LED for emitting colored light is a single light or one or a plurality of semiconductor chips of LEDs having a plurality of emission spectra are arranged in a plane and the emitted light is emitted. Is placed in the vicinity of the focal length of the condensing lens, which is the condensing means, and the liquid crystal panel is illuminated, and the image of the illuminated liquid crystal panel is focused on the projection lens side of the screen of the convex Fresnel lens structure by the projection lens. It is characterized in that a projected image is formed between the position and the screen surface.

According to a third aspect of the present invention, an LED for emitting light is a single light or one or a plurality of semiconductor chips of LEDs having a plurality of emission spectra are arranged in a plane and the emitted light is emitted. The part is arranged in the vicinity of the focal length of the condensing lens, which is the condensing means, and the liquid crystal panel is illuminated, and the image of the illuminated liquid crystal panel is formed on the semi-transmissive screen by the projection lens, and the half mirror Thus, the semi-transmissive screen is provided between the focus position on the projection lens side of the screen of the reflective Fresnel lens structure and the screen surface.

According to a fourth aspect of the present invention, a liquid crystal panel for forming an image is attached to a side portion or an upper portion of the head, and the image displayed on the liquid crystal panel is guided to both eyepieces by a reflection or transmission means and is placed on the retina. In a head-mounted display device that forms an image on a head, an LED for emitting colored light, a light collecting means for collecting the emitted light, a liquid crystal panel for forming an image, and an image on the liquid crystal panel are projected. Projection lens for
The projection lens is configured by a screen for displaying a projected image, and the projection lens is separately projected by a tilt optical system that separately projects one image into two images corresponding to the interpupillary distance of the left and right eyes.

According to a fifth aspect of the present invention, a liquid crystal panel for forming an image is attached to the side or upper part of the head, and the image displayed on the liquid crystal panel is guided to both eyepieces by reflection or transmission means on the retina. In a head-mounted display device for forming an image on a head, an LED for emitting colored light, a light collecting means for collecting the emitted light, a liquid crystal panel for forming an image,
It is composed of a projection lens for projecting an image on the liquid crystal panel and a screen for projecting the projection image. The LED, the light collecting means, the liquid crystal panel and the projection lens are provided in the upper direction of the head,
The folding mirror and the screen for guiding the projected image to the screen surface are provided on the forehead and the front of the eye.

According to a sixth aspect of the present invention, an LED, a light collecting means, a liquid crystal panel, a projection optical system including a projection lens, and a folding mirror for guiding a projected image to a screen surface.
And an imaging optical system consisting of a screen, the projection optical system is mounted on the head, the imaging optical system is provided on the forehead and the front of the eye, and it can be bent between the projection optical system and the imaging optical system. By providing a hinge mechanism, the projection optical system and the imaging optical system can be folded.

According to a seventh aspect of the present invention, a liquid crystal panel for forming an image is attached to a side portion or an upper portion of the head, and the image displayed on the liquid crystal panel is guided to both eyepieces by reflection or transmission means on the retina. In a head-mounted display device for forming an image on a head, an LED for emitting colored light, a light collecting means for collecting the emitted light, a liquid crystal panel for forming an image,
The LED for emitting the colored light is composed of a projection lens for projecting an image on the liquid crystal panel and a screen for projecting the projected image, and the LEDs for emitting colored light are green (G) and magenta (B + R).
The color lights of the two colors can be selectively switched alternately on the time axis, and the liquid crystal panel for forming an image has two types of color filters of blue-green and yellow arranged in a matrix, and the image data of those is LED It is characterized in that it switches in synchronization with the colored light of.

[0020]

According to the present invention, the liquid crystal panel for forming an image is attached to the side or upper part of the head, and the image displayed on the liquid crystal panel is reflected or transmitted through both eyepieces. In a head-mounted display device that guides light to the retina and forms an image on the retina, an LED (L
lightEmittingDiode), a light collecting unit for collecting emitted light, one liquid crystal panel for forming an image, a projection lens for projecting an image on the liquid crystal panel,
Since it is composed of a screen for displaying a projected image, it is possible to reduce power consumption and to make it compact and lightweight. Further, the enlargement ratio is large and the viewing angle can be widened.

According to a fourth aspect of the present invention, a liquid crystal panel for forming an image is attached to a side portion or an upper portion of the head, and the image displayed on the liquid crystal panel is guided to both eyepieces by reflection or transmission means to be placed on the retina. In a head-mounted display device for forming an image, an LED (LightEmi) for emitting colored light is used.
projection diode, a light collecting means for collecting emitted light, a liquid crystal panel for forming an image, a projection lens for projecting an image on the liquid crystal panel, and a screen for projecting the projected image. The lens allows the left and right eye width adjustment and the diopter adjustment to be adjusted independently by projecting with a tilt optical system that separates and projects one image into two images corresponding to the eye widths of the left and right eyes. it can.

The invention according to claims 5 to 6 is LE
D, a condensing means, a liquid crystal panel, and a projection lens are provided in the upper direction of the head, and a folding mirror and a screen for guiding the projected image to the screen surface are provided on the forehead and the front of the eye. A head-mounted display device with excellent weight balance can be realized, and a hinge mechanism is provided between the projection optical system and the imaging optical system to allow folding and save space when not in use. be able to.

According to a seventh aspect of the invention, an LED (Light Emitting Diode) for emitting colored light is used.
e), Condensing means for condensing emitted light, a liquid crystal panel for forming an image, a projection lens for projecting an image on the liquid crystal panel, and a screen for projecting a projected image, and emitting colored light. The LED for this makes it possible to selectively switch a plurality of colored lights on the time axis, a liquid crystal panel for forming an image has a plurality of color filters arranged in a matrix, and the image data thereof is synchronized with the colored lights of the LEDs. It is possible to obtain a high-density color image without using a plurality of liquid crystal panels by switching the display.

[0024]

The present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a diagram showing a basic optical system of a head-mounted display device according to the invention described in claim 1, and FIG. 1 (a) is a configuration diagram of the basic optical system, b) The figure is
It is a block diagram of the Example which changed a part of eyepiece lens of the Example of FIG.

In the configuration diagram shown in FIG.
Is a light source composed of one or a plurality of semiconductor chips, and can emit a single color or a plurality of lights. This light is emitted from the rear of the liquid crystal panel 102, and the light electrically modulated by the liquid crystal panel 102 is transmitted. The emission bright point of this LED is provided in the vicinity of the focal position of the condenser lens 103 and is incident parallel to the liquid crystal panel surface. The image formed on the liquid crystal panel is imaged by the projection lens 101 on the semi-transmissive screen 104 whose surface is semi-transparent matte finish, in proportion to the light transmission intensity. The formed image is an eyepiece lens 10 having a diameter size equal to or larger than the left and right eye widths.
5, a virtual image is formed on the retina of the human eye 107.

In the case of these image forming optical systems, the liquid crystal panel 1
The image data generated in 02 is enlarged and projected on the semi-transmissive screen according to the enlargement ratio of the projection lens. Regarding this semi-transmissive screen, it is provided within the focal length (f1) of the eyepiece lens 105, and The eye 107 will see a virtual image 108 of the image on the screen located in its focal point and will be further magnified.

The eyepiece for enlarging may be a single convex lens, but the size and weight can be further reduced by using only a part of the convex lens as shown in FIG. As described above, by performing the magnifying means in two stages of the projection lens and the eyepiece lens, it is possible to improve the magnifying power and see a small liquid crystal panel with both eyes.

The LED used for illumination can be handled as a point light source by providing a light emitting point in the vicinity of the focal point of the condenser lens, and the light-collecting efficiency can be increased. A dimmable display is possible by controlling the forward current of.

FIG. 2 is a diagram for explaining the structure of the head mounted display device according to the invention described in claim 2 when the screen is a Fresnel lens, and the basic optical system is the head mounted device shown in FIG. It is the same as the basic optical system of the mold display device.

Image formation position by the projection lens 101 (arrow 1
09) is from the focal length f1 of the Fresnel lens 201,
It is provided on the Fresnel lens side. In this case, the image plane may be the Fresnel lens surface, and the virtual images are viewed by the left and right eyes 107 as described in FIG. This Fresnel lens is a convex lens in which a sawtooth-shaped micro prism is continuously concentrically molded with an optical resin, but even a relatively large lens can be resin-molded with a thin wall, and is also a lightweight eyepiece lens. A screen can be provided.

The sawtooth pitch of this Fresnel lens is
By making the pixel pitch finer than the projected image, it is possible to obtain an image free from moire and free from hot spots without using a semi-transmissive screen.

Further, in so-called monochrome display using the monochromatic light of the LED, it is possible to suppress the color dispersion peculiar to the Fresnel lens.

FIG. 3 is a diagram showing a basic optical system of a head-mounted display device according to the third aspect of the invention. First, the configuration will be described.

The LED 106 is a light source composed of one or a plurality of semiconductor chips, and can emit a single color or a plurality of lights. Liquid crystal panel 102
Is radiated with those lights from behind. This LED
The luminescent bright point of is provided near the focal position of the condenser lens 103 and is incident in parallel to the liquid crystal panel surface. The image formed on the liquid crystal panel is formed on the semi-transmissive screen 104 by the projection lens 101 in proportion to the light transmission intensity. This formed image 307
Is a reflection type Fresnel reflection mirror 306 whose optical path is bent by a half mirror 305 inclined at about 45 degrees.
50% of the reflected light enters. This Fresnel reflection mirror has a diameter size equal to or greater than the left and right eye widths, and a semi-transmissive screen 104 is provided in the focal point of this Fresnel reflection mirror. The human eye 308 looks at this Fresnel screen through a half mirror, and by setting the eye near the focal position of this Fresnel screen, an extremely bright image can be obtained.

(Embodiment 2) FIG. 4 is a view showing the structure of a head mounted display device according to the invention described in claim 4 (a).
The figure is a block diagram, and the figure (b) is a perspective view which makes adjustment of a projection lens part easy to understand. is there.

In the present invention, a projection lens is formed by juxtaposing a lens composed of two entrance pupils and projected. In the configuration diagram shown in FIG.
6. The condenser lens 103 illuminates the liquid crystal panel 102. The projected image of the liquid crystal panel 102 is the projection lens 401 for the left eye and the projection lens 402 for the right eye that are arranged side by side.
By the tilting optical system corresponding to the left and right eye widths, the left and right eyepieces 40 are moved by evenly shifting the image forming positions to the left and right.
The image is formed within the focal length of 3,404. A semi-transmissive screen is provided on the plane where the image is formed, and there is a method of viewing the image on that screen with a spherical lens eyepiece, or a method of viewing the image plane with a Fresnel lens eyepiece without using the semi-transmissive screen. is there. This projection lens slides parallel to the left and right eye width directions, so that the eye distance can be adjusted easily and accurately. The diopter adjustment can be performed independently by adjusting the distance between the left and right eyepieces 403 and 404 and the positions 405 and 406 of the projected images. In this case, a semi-transmissive screen may be provided at the position where the projected image is generated, and it may be viewed as an eyepiece of a convex lens for eyepiece. However, the convex lens may be a Fresnel lens, and a half mirror as shown in FIG. The Fresnel mirror may be an optical system corresponding to the left and right eyes.

FIG. 6B is a perspective view for explaining a method of adjusting the diopter and the pupil distance of the projection lens.

The projection lenses provided at two places on the left and right sides are lenses that can move left and right evenly around the position of the fulcrum 408, and the interpupillary adjustment can be performed by this. The fulcrum position is arranged so as to coincide with the center line in the left-right direction of the liquid crystal panel. This lens requires a movement amount for covering the human eye width of 50 mm to 70 mm with the projection image forming surface, and when the enlargement ratio is large, the movement amount decreases in proportion to the magnification.

Further, in the diopter adjustment, the distance between the eyepiece and the screen may be changed as described in FIG. (A), but as another method, a flat Fresnel lens is used to correspond to the left and right eye widths. When an eyepiece having two entrance pupils is used, it is possible to change the image forming position by changing the distance between the eyepiece and the eyepiece, and the diopter adjustment levers 409 provided on the left and right projection lenses respectively allow the projection lens to move out. Can be controlled to adjust the diopter.

FIG. 5 is a configuration diagram for explaining a state in which the head mounted display device according to the invention of claim 5 is specifically mounted on the head.

The illumination means 501 provided on the head, the liquid crystal panel 502, and the projection lens 503 constitute a projection optical system 507, and these projection optical systems are provided on the upper head.
The mirror 504, the half mirror 505, and the Fresnel reflection mirror 506 are provided at a distance from the image forming optical system to form an image forming optical system 508, and are fixed to the forehead of the head. The mirror 504 bends the optical path by approximately 90 degrees and guides the image to the half mirror 505. The half mirror 505 selects reflected light and transmitted light at a constant ratio, and the image reflected by the half mirror enters the Fresnel reflecting mirror 506. The Fresnel reflecting mirror has a Fresnel convex lens structure on the incident side as described in FIG. 2 and a mirror structure capable of reflecting the back side. Therefore, the image reflected by the half mirror is reflected by the Fresnel reflecting mirror, and then passes through the half mirror again to form an image on the eye.

The Fresnel reflecting mirror is a screen having a strong directivity and guides the reflected image to the pupil of the eye, so that the efficiency of the projection optical system is high.

FIG. 6 is an embodiment of a head mounted display device according to the invention described in claim 6, and illustrates a foldable structure. FIG. 6A shows a structure when mounted on the head. The figure and (b) figure are state diagrams when folding is performed.

Illumination means provided on the head, liquid crystal panel,
The projection optical system 507 is configured by the projection lens, and the imaging optical system 508 configured by the mirror, the half mirror, and the Fresnel reflection mirror is arranged separately from each other.
By supporting both the upper part of the head and the forehead, the load is not concentrated on one part.

Therefore, the projection optical system is provided above the head, and the imaging optical system is provided at the forehead, thereby making it possible to mount the article with excellent weight balance. Further, by providing a bendable hinge mechanism 509 between the projection optical system and the imaging optical system, it is possible to compactly fold the housing when it is not used.

FIG. 7 is a principle diagram in the case of an embodiment of the color-sequential system of the head mounted display device according to the invention described in claim 7, and FIG. 7A is a timing diagram when the color light is controlled in time division. The chart and the figure (b) are schematic diagrams showing changes in color selection of filters of the liquid crystal panel.

In the color sequential system, as described in the prior art, the light radiated to the liquid crystal surface is input in a time division manner.
This is a method of switching the image data according to the color, but the response of the light source selection and the liquid crystal selection dominates the image quality.

The liquid crystal panel has blue green (Cy) and yellow (Y).
e) Two-color filters are provided, and the filters are alternately arranged corresponding to the liquid crystal pixels.

The LED of the illumination optical system is displayed by the liquid crystal display 1.
With respect to the field time, as shown in FIG. 7A, green colored light and magenta (blue and red combined light) colored light are alternated in 1/2 field (1 / 2f) time. Illuminate in a time-sharing manner so that switching is possible.

That is, one field of NTSC (1f)
Is about 16 msec. Therefore, each is 8 mse
c. Drives in time division with the selected time of.

FIG. 6B is a schematic view for facilitating the understanding of the arrangement of the filters of the liquid crystal panel and the color selection of the light of the incident light with respect thereto.

A liquid crystal panel in which blue-green (Cy) and yellow (Ye) color filters are arranged in a mosaic pattern is first irradiated with green color light on the liquid crystal panel surface. In that case, as the image data corresponding to the Cy and Ye color filters formed on the liquid crystal panel, all green image data is input. By doing so, all of the green color light is transmitted to the Cy and Ye filters, so that all pixels can be output as green image data.

Next, when the color light radiated to the liquid crystal panel surface is changed to magenta (B + R) color light and radiated to the liquid crystal panel,
By inputting blue data to the Cy filter and red data to the Ye filter corresponding to each pixel of the liquid crystal panel, red component data and blue component data are arranged every other pixel. Is displayed. By repeating switching between these two colors of light in a time period of 1/2 f, it is possible to display RGB three-color data in a time division manner.

The resolving power in this case can represent the green image data (luminance component) by the data corresponding to all the pixels, and the red and blue components are the color difference components. In the above, deterioration of image quality does not occur, and high-definition color display can be displayed using one liquid crystal.

[0056]

As described above, according to the first to fourth aspects of the invention, in the head mounted display device, the LED for emitting the colored light and the light collecting for collecting the emitted light are provided. The means, the single liquid crystal panel for forming an image, the projection lens for projecting the image on the liquid crystal panel, and the screen for projecting the projected image make it possible to reduce power consumption and reduce the size and weight.

By viewing one liquid crystal with two eyes, eye strain can be reduced.

Further, since the dimming can be easily performed by using the illumination using the LED, the adjustment can be made according to the surrounding environment.

Further, by forming the screen with a Fresnel lens, it is possible to provide a smaller head-mounted display device.

Further, by enlarging the enlarging means with the two stages of the projection lens and the Fresnel lens, the angle of view can be widened and can be immersed in a virtual space such as virtual reality, so that it is extremely realistic. It is possible to provide a moving image.

According to the invention described in claim 5, the projection optical system and the imaging optical system are separately provided in the head and the forehead, so that the head having an excellent weight balance, which is important for wearability, is provided. An on-board display device can be realized.

Further, according to the invention described in claim 6, the hinge mechanism is provided between the projection optical system and the imaging optical system, so that the folding is possible and the space is saved when not in use or during transportation. It is suitable for display devices as portable devices that are easy to carry.

According to the invention described in claim 7, the LED for emitting colored light can selectively switch a plurality of colored lights on the time axis, and the liquid crystal panel for forming an image is
By arranging a plurality of color filters in a matrix and switching their image data in synchronization with the color light of the LED, it is possible to express a high-density image using a single liquid crystal panel. It is possible to obtain a color image of.

Further, since the color selection is performed twice within the time of one field, the response time of the liquid crystal should be within about 8 msec. Therefore, when the cell thickness of the normal TN liquid crystal is set to about 2 μm. In this way, it is possible to obtain a display with a sufficient response and high color purity.

[Brief description of drawings]

1A and 1B are diagrams showing a basic optical system of a head-mounted display device showing an embodiment of the present invention, in which FIG. 1A is a configuration diagram of the basic optical system, and FIG. Diagram of the embodiment.

FIG. 2 is a diagram illustrating a structure in which the screen of the head-mounted display device of the present invention is a Fresnel lens.

FIG. 3 is a diagram showing a basic optical system of a head-mounted display device of the present invention.

FIG. 4 is a diagram showing a configuration of a head-mounted display device of the present invention, FIG. 4A is a configuration diagram, and FIG. 4B is a perspective view in which a projection lens unit is easily understood.

FIG. 5 is a configuration diagram for specifically explaining a state in which the head-mounted display device of the present invention is mounted on the head.

6A and 6B are diagrams illustrating a foldable configuration of the head-mounted display device of the present invention, FIG. 6A is a configuration diagram when mounted on the head, and FIG. 6B is a state diagram when folded. .

7A and 7B are diagrams for explaining the principle in the case of an embodiment of a color-sequential system of a head-mounted display device of the present invention, FIG. 7A is a timing chart of light color selection, and FIG. Schematic diagram that explains the color selection of.

[Explanation of symbols]

 101. Projection lens 102. Liquid crystal panel 103. Condenser lens 104. Screen 105. Eyepiece lens 106. LED 107. Eye 108. Virtual image 109. Arrow 201. Fresnel lens 305. Half mirror 306. Fresnel reflection mirror 307. Image 308. Eye 401. Projection lens for left eye 402. Right eye projection lens 403. Eyepiece for left eye 404. Eyepiece for right eye 405. Virtual image position for left eye 406. Right eye virtual image position 409. Diopter adjustment lever 501. Illumination means 502. Liquid crystal panel 503. Projection lens 504. Mirror 505. Half mirror 506. Fresnel reflection mirror 507. Projection optical system 508. Imaging optical system 509. Hiji Mechanism

Claims (7)

[Claims] 1. A head in which a liquid crystal panel for forming an image is attached to a side portion or an upper portion of the head, and an image displayed on the liquid crystal panel is guided to both eyepieces by reflection or transmission means to form an image on the retina. In a mounted display device, an LED (Light Emitting Dio) for emitting colored light is used.
de), a light collecting means for collecting emitted light, one liquid crystal panel for forming an image, a projection lens for projecting an image on the liquid crystal panel, and a screen for projecting the projected image Head-mounted display device characterized by: 2. An LED for emitting colored light comprises one or a plurality of LED semiconductor chips each having a single light or a plurality of emission spectra, which are arranged in a plane, and the light emitting portion is formed by a condensing means. It is placed near the focal length of a certain condenser lens to illuminate the liquid crystal panel, and the image of the illuminated liquid crystal panel is projected from the focal position on the projection lens side of the screen with a convex Fresnel lens structure to the screen surface by the projection lens. The head-mounted display device according to claim 1, wherein a projection image is formed between the two. 3. An LED for emitting colored light has one or a plurality of LED semiconductor chips having a single light or a plurality of emission spectra arranged in a plane, and the light emitting portion thereof is used as a condensing means. It is placed near the focal length of a certain condensing lens, illuminates the liquid crystal panel, and the image of the illuminated liquid crystal panel is focused on a semi-transmissive screen by a projection lens, and a reflective Fresnel lens by a half mirror. From the focus position on the projection lens side of the structure screen,
The head mounted display device according to claim 1, wherein the semi-transmissive screen is provided up to the screen surface. 4. A head for attaching an image forming liquid crystal panel to the side or upper part of the head and for guiding the image displayed on the liquid crystal panel to both eyepieces by reflection or transmission means to form an image on the retina. In a mounted display device, an LED (Light Emitting Dio) for emitting colored light is used.
de), a light collecting means for collecting emitted light, one liquid crystal panel for forming an image, a projection lens for projecting an image on the liquid crystal panel, and a screen for projecting a projected image, The head-mounted display device is characterized in that the projection lens separates and projects one image into two images according to the interpupillary distance of the left and right eyes by a tilt optical system. 5. A head for attaching an image forming liquid crystal panel to a side portion or an upper portion of the head, and guiding an image displayed on the liquid crystal panel to both eyepieces by reflection or transmission means to form an image on the retina. In a mounted display device, an LED (Light Emitting Dio) for emitting colored light is used.
de), a light collecting means for collecting emitted light, a liquid crystal panel for forming an image, a projection lens for projecting an image on the liquid crystal panel, and a screen for displaying a projected image. Means, a liquid crystal panel, and a projection lens in the upper direction of the head, and a folding mirror and a screen for guiding the projected image to the screen surface are provided in the forehead and the front of the eye. . 6. An LED, a light collecting means, a liquid crystal panel,
It consists of a projection optical system consisting of a projection lens and an imaging optical system consisting of a folding mirror and a screen to guide the projected image to the screen surface.The projection optical system is mounted on the head, and the imaging optical system is located on the forehead and the front of the eye. 6. The projection optical system and the imaging optical system are made foldable by providing a folding mechanism provided between the projection optical system and the imaging optical system at the section. Head mounted display device. 7. A head for attaching a liquid crystal panel for forming an image to a side portion or an upper portion of the head and for guiding an image displayed on the liquid crystal panel to both eyepieces by reflection or transmission means to form an image on the retina. In a mounted display device, an LED (Light Emitting Dio) for emitting colored light is used.
de), a light collecting means for collecting emitted light, a liquid crystal panel for forming an image, a projection lens for projecting an image on the liquid crystal panel, and a screen for displaying a projected image, and emits colored light. The LED for this makes it possible to selectively switch two color lights of green (G) and magenta (B + R) alternately on the time axis, and the liquid crystal panel forming the image has two kinds of colors of blue green and yellow. A head-mounted display device characterized in that filters are arranged in a matrix, and image data thereof is switched in synchronization with the color light of LEDs.