JPH0426287A - Spectacle type video display device - Google Patents

Abstract

PURPOSE:To prevent the distortion of a video occurring by employing a spectacle type device by mounting a liquid crystal display part at the side part on one side of a spectacle frame, forming two systems of optical paths with half mirrors, and projecting the video on the eye-piece of the eyes. CONSTITUTION:A part where the optical paths R, RR, and RL are formed i.e. the part where the liquid crystal display part 12, a mirror M, a lens L, and the half mirror 13 are arranged is formed along a spectacle type frame 11. Video light displayed on the liquid crystal display part 12 progresses in a frame 15 for optical path in a state where it is cut off from external light, and arrives at the eye-pieces 14R, 14L. In such a way, since an output video on the liquid crystal display part provided at the side part of the spectacle type frame is introduced to the eye-piece on the optical path along the spectacle type frame, it is possible to make the device approach ordinary spectacles in appearance, which enables the video to be enjoyed without generating picture distortion.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a glasses-type video display device.

[Summary of the Invention] The eyeglass-type image display device of the present invention includes a liquid crystal display section attached to one side of a spectacle frame, and a mirror to deflect the image output displayed on the liquid crystal display section to an eyepiece section. By introducing this system, users can view images while wearing glasses, and in particular, by aligning the optical path with the eyeglass frame, the appearance is similar to that of ordinary glasses, and in addition, the optical path is aligned with the eyeglass frame. A half mirror is provided in the eyepiece to branch the optical path into two systems, so that the output image from a single image display device can be introduced individually to both eyepieces.

[Commercial technology] In recent years, helmet-type and goggle-type video monitor devices have been developed for the purpose of enjoying large-screen images by oneself or for viewing images while carrying them outdoors. ing.

For example, as a goggle-type device, as shown in Figure 2,
Backlight 2 on the top of goggles 1 with a concave mirror on the inside
a liquid crystal display device 2 is provided, and this liquid crystal display device 2
The image displayed on the mirror 3 is projected onto the inside of the goggles l. Then, since the inside of the goggles 1 is a concave mirror, the person in need A can see the image as shown by the dash-dotted line.

Such video monitor devices can provide the power of large-screen images with a small display device, and when used outdoors, they do not have to be too bright to see the image clearly because outside light is blocked. does not occur either.

[Problems to be solved by the invention] However, in goggle-type or helmet-type video monitor devices, both eyes actually look at a single concave mirror, which means that they see an image projected onto a curved surface. Therefore, there is a problem that the image is somewhat distorted.

Furthermore, it is impractical to enjoy videos while wearing goggles or a helmet outdoors, and there is also the problem that the device is too large to be portable. Therefore, for example, there is a desire for a device that is smaller and lighter, and that is also in the shape of glasses, so that the user can wear it outdoors or on a train without any resistance.

[Means for Solving the Problem] The present invention has been made in view of the above-mentioned problems, and in order to provide a sense of unity with the appearance of the glasses, an optical path is formed along the frame to display the image on the display means. is supplied to the eyepieces, and the optical path is further divided into two systems by a half mirror in the optical path, so that images are individually projected to the eyepieces of both eyes. It is.

[Function] By attaching the liquid crystal display to one side of the eyeglass frame and introducing the image displayed there to the eyepiece via an optical path along the eyeglass frame, the appearance can be almost similar to that of eyeglasses. Since the mirrors in the eyepiece are viewed individually with both eyes without using a concave mirror, there is no distortion of the image.

[Embodiment] FIGS. 1(a), 1(b), and 1(c) are a plan view, a front view, and a side view showing an embodiment of the internal mechanism of the eyeglass-type image display device 10 of the present invention.

In these figures, II is an eyeglass-type frame, 12 is a liquid crystal display unit attached to one side of the eyeglass-type frame 11, and the liquid crystal display 12a, the liquid crystal display 12
It is constituted by a backlight 12b and the like provided behind a. Note that a video source such as a tuner and its video signal processing circuit system may be built into the liquid crystal display section 12, but for compact size, a connector terminal may be provided to connect a separate device (separate small size). It is preferable to input a video signal from a tuner, etc.). Further, for example, a tuner may be attached to the other side of the spectacle frame 11 so that the received video signal can be displayed on the liquid crystal display section 12.

Further, M is a mirror, and 111 mirrors from M to Mll are provided to form an optical path R. L is a lens, L1
-L7 are provided. Note that the lens L1 is movable back and forth in the direction of the optical path R for diopter adjustment.

Reference numeral 13 denotes a half mirror into which the light that has passed through the lens L3 is incident, and by this half mirror 13, the optical path R is divided into an optical path R8 to an eyepiece 14R corresponding to the right eye, and an optical path R8 to the eyepiece 14L corresponding to the left eye. The optical path RL is branched to the optical path RL. In addition,
In the eyepiece section 14L, there is a mirror M. However, eyepiece part 1
In 4R, mirrors M, , are arranged, as shown in Fig. 1(C).
As shown in , the user can use this mirror M Io, M +
You will directly see the image projected on screen 1.

Optical path R1 and R,? , RL are formed, that is, the liquid crystal display section 12, the mirror M, the lens, and the half mirror 1.
3 is covered by an optical path frame 15 formed along the eyeglass-shaped frame 11, and the image light displayed on the liquid crystal display section 12 is blocked from external light. Proceeding within the frame 15 is the eyepiece section 14R.

It reaches 14L.

In other words, within the optical path frame 15, the liquid crystal display section 12
As shown in Figure (a), the output image light travels through mirror M → lens L1 → mirror M2, and is deflected along the spectacle frame 11, and then as shown in Figure (b). The 2-1 mirror on the lens reaches the half mirror 13.

Then, the transmitted light and reflected light are split at half mirror 3, and the transmitted light is mirror M5→mirror M7→lens L5→
The light progresses from mirror M9 to lens L7 to mirror Ml+, forming an optical path RR to the eyepiece 14R of the right eye.

On the other hand, the light reflected by the half mirror 13 is reflected by the mirror M6
→ Lens L4 → Mirror M8 → Lens L6 → Mirror M, o
As the light progresses, an optical path RL to the left eye eyepiece 14L is formed.

In addition, from the half mirror 13, the mirror M1.1M1. of each eyepiece part 14R14L. The optical path distance to R
R. The lengths of Rt are matched.

In addition, the inner side 11 of the front frame of the eyeglass type frame 11
a may be a lens that transmits light like a normal sunglass lens, but if it completely blocks light, each eyepiece 14R. 14L allows you to see clearer images.

In this embodiment, as described above, the image of the liquid crystal display section 12 formed on the side of the eyeglass-type frame 11 is introduced to the front part of the eyeglass-type frame 11 by the optical path R along the eyeglass-type frame 11. Therefore, the liquid crystal display section 12 is not removed from the front part of the eyeglass-shaped frame 11, resulting in a sleek front appearance, and the optical path frame 15 does not obstruct the eyeglass-type appearance. do not have.

Note that by integrating the optical path frame 14 with the spectacle frame 11, that is, by forming the optical path R within the spectacle frame 11, the appearance can be made closer to that of ordinary spectacles.

Furthermore, since the liquid crystal display section 12 is not provided on the front side of the frame, the front and rear weights are well balanced, and it is less likely to slip off toward the front during use. Further, as described above, if a tuner or the like is provided on the side of the eyeglass-type frame 11 to which the liquid crystal display section 12 is not attached, the left and right weights of the eyeglass-type image display device can be balanced, making it suitable for wearing.

Furthermore, in this embodiment, the output of the liquid crystal display section 12 is distributed to the left and right eyes by a half mirror 13, and each eyepiece section 1.
R. 14L mirror M. ．． ．． Therefore, two units of images can be obtained from one unit of liquid crystal display unit, and each eyepiece unit 14
R. Since the same image can be viewed directly in front of each eye, it is possible to increase the power of the image and eliminate distortion easily at low cost.

In addition, the lens L. ．． L. ．． Or lens L6.

L? Each eyepiece 14R. If the diopter can be adjusted individually with the 14L, it can be used satisfactorily even by people whose left and right eyesight is extremely different.

By the way, although the sound is not explained, earphones may be provided in the frame portion that comes into contact with the ear when the present eyeglass-type video display device is worn, so that the sound can be heard.

[Effects of the Invention] As explained above, the glasses-type image display device of the present invention has the following effects:
The output image from the liquid crystal display on the side of the eyeglass frame is introduced to the eyepiece via an optical path along the eyeglass frame, making it similar in appearance to regular eyeglasses and suitable for outdoor wear. It has the effect of eliminating the sense of discomfort at times.

Furthermore, since the output image of the liquid crystal display is distributed to the left and right eyes using a half mirror, it is possible to easily create a glasses-type image display device at a low cost that allows both eyes to view the same individual image very close together. This has the effect of allowing you to enjoy images with great power and without image distortion.

[Brief explanation of drawings]

FIGS. 1(a), 1(b), and 1(c) are a plan view, a front view, and a side view showing an embodiment of the present invention. FIG. 2 is an explanatory diagram of a conventional goggle-type video monitor device. 10 is a glasses-type video display device, 11 is a glasses-type frame, 1
2 is a liquid crystal display section, 13 is a half mirror 14L, 14R is an eyepiece section, 15 is a frame for an optical path, M1 to M are mirrors,
L1 to L7 indicate lenses. Diagram

Claims (1)

[Claims] A liquid crystal display is attached to one side of the eyeglass-shaped frame, and the image displayed on the liquid crystal display is deflected by a mirror along the eyeglass-type frame to form an optical path, and a half mirror is used to divide the image into two systems. 1. A spectacles-type image display device, characterized in that it is configured to be branched and introduced into both eyepieces.