JPH07287185A - Visual device - Google Patents

Abstract

PURPOSE:To eliminate such trapezoidal distortion that the inside parts of images viewed with the right and left eyes are seen small when the images are viewed with the right and left eyes by using a couple of liquid crystal planes. CONSTITUTION:One liquid crystal panel 20 is arranged slantingly above the center of a device main body 2. A plane mirror 23 is arranged in front of the center on the bottom surface of the rear panel 2b of the device main body 2 and a couple of plane mirrors 24R and 24L are arranged on both sides of a V-shaped nose pad in the center on the bottom surface of the rear panel 2b. A couple of half-mirrors 27R and 27L are arranged opposite a couple of ocular window parts 13R and 13L on the bottom surface of the rear panel 2b. A couple of magnifying lenses 26R and 26L are arranged between those couples of plane mirrors 24R and 24L, and half-mirrors 27R and 27L. Consequently, what is called a 'visortron(R)' can be generated by the one liquid crystal panel 20 and the simplification of the mechanism and the great reduction in cost are enabled. Further, when the images are viewed, there is neither an unnatural feeling nor fatigue.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a visual device capable of enlarging and viewing an image such as a video image using one liquid crystal (LCD) panel as an image display device.

[0002]

2. Description of the Related Art The applicant of the present invention has disclosed a visual device for magnifying an image displayed on two liquid crystal panels with left and right eyepieces so that both eyes can see the image. For example, Japanese Patent Application Laid-Open No. 4-23579 discloses a visual device in which an image displayed on one liquid crystal panel can be viewed with one eye.

[0003]

However, in the above-mentioned visual device of the type which can be seen with both eyes, since two liquid crystal panels are used, there is a disadvantage that the entire visual device becomes expensive.
Further, in a single liquid crystal panel of the above-mentioned visual device of the type that is viewed with one eye, information of one eye is viewed with both eyes, which may cause a physiologically unnatural appearance and fatigue.

Therefore, the present invention provides a visual device in which the image projected on one image display device does not look unnatural even when viewed with both eyes, and the cost of the entire device can be reduced. To do.

[0005]

[Means for Solving the Problems] In a visual device in which a casing-type device body having a video display unit is mounted on a face so that a video of the video display unit can be viewed, An image display device, a magnifying lens and a plane mirror are provided, and the one image display device is arranged in the center of the apparatus body, and the magnifying lens and the plane mirror are arranged at symmetrical positions in the apparatus body. is there.

[0006]

The image displayed on one image display device can be viewed with both eyes by the magnifying lens and the plane mirror which are symmetrically arranged. As a result, it is possible to significantly reduce the cost, and even when viewing an image displayed on one image display device, no unnaturalness is felt.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 is a spectacle-type visual device, and a device body 2 having a sunglasses-like smoke glass 2a on the front side, and side fixing pieces 3R and 3L on both sides of the device body 2. A pair of handles 7R, 7L rotatably supported in the up-down direction and the left-right direction via the shaft 4, the rotating pieces 5R, 5L and the shaft 6, and the pair of handles 7R, 7L.
It is generally composed of a pair of inner type headphones 9R and 9L attached to the central portion of the through cord 8.

The apparatus main body 2 is of a substantially casing type including a smoked glass 2a and a rear panel 2b made of a U-shaped opaque synthetic resin, and an electric printed circuit board 10 arranged on the upper surface side in the apparatus main body 2. A power supply, a video signal, and an audio signal are supplied to the cord via a cord 11. A connector 12 is attached to the other end of the cord 11 so that the VTR4
It is connected to 0. The VTR 40 is configured such that the tape cassette 50 can be detachably stored on the front side.
In FIG. 1, 41 is an operation button, 42 is a power button, and 43 is a cassette eject button. Further, a rechargeable battery 60 is attached to one side surface of the VTR 40, and power is supplied by this. Further, a drive unit 70 for a small video camera is attached to the other side surface of the VTR 40, and a cord 7 coming out of the drive unit 70 is attached.
The small video camera 80 attached to the other end of 1 is driven. This small video camera 80 has an imaging lens 81, a microphone 82, a mounting attachment 83, and a cheek pad 84. In the system shown in FIG. 1, the eyeglass-type visual device 1 is provided with a pair of handles 7R,
You may attach it to your face via 7L and play the VTR40 to see it.
It may be used as a viewfinder when recording in.

Further, as shown in FIG. 2, a pair of eyepiece windows 13R and 13L are opened on the side (rear surface) of the rear panel 2b of the apparatus main body 2 which faces the left and right eyeballs L and R, Filters 14R and 14L are mounted inside the pair of eyepiece windows 13R and 13L. Further, the center of the back and bottom corners of the rear panel 2b is a V-shaped recess, and a sponge-like nose pad (nose pad) 15 is attached to this recess. Furthermore, rear panel 2
On the bottom side of b, a pair of interpupillary adjustment knobs 16R, 16L are arranged so as to be reciprocally slidable in the longitudinal direction so as to sandwich the nose pad 15, and at the same time as the nose pad 15 on the bottom side of the rear panel 2b. A vergence angle adjusting knob 17 is provided between the right eye width adjusting knob 16R so as to be reciprocally slidable in a direction orthogonal to the longitudinal direction.

FIG. 3 is an enlarged perspective view of the hinge portion of the handle 7R on the right side (the hinge portion of the handle 7L on the left side has the same structure). The handle 7R is supported by the rotating piece 5R by a pair of shafts 6 and 6, and the handle 7R can be folded around the pair of shafts 6 and 6 toward the rear panel 2b of the apparatus main body 2. The rotating piece 5R is connected to the side surface fixing piece 3R by a shaft 4. Since the rotating piece 5R and the handle 7R are rotatable about the shaft 4 with respect to the side surface fixing piece 3R, the device main body 2 is set at an arbitrary angle with respect to the handle 7R, and the pair of eyepiece window portions 13R and 13L. The angle can be adjusted to make it easier to see through. Further, recesses 5a and 7a are formed between the pair of shafts 6 and 6 of the rotating piece 5R and between the pair of shafts 6 and 6 of the handle 7R, respectively. As shown in FIG. 11, the hinge portions 92, 92 of the pair of handles 91, 91 of the spectacles 90 are just fitted in the recesses 5a, 7a. As a result, the visual device 1 can be put on the glasses 90 and can be enjoyed. Further, since the shaft 6 of the visual device 1 and the hinge portion 92 of the spectacles 90 are located at substantially the same position, the handle 9 of the spectacles 90 is formed.
1 can be folded at the same time as the handle 7R (7L) of the visual device 1.

FIG. 4 shows the internal structure of the apparatus main body 2. On the electric printed circuit board 10 arranged in the main body 2 of the apparatus, the cords 8 of the pair of headphones 9R and 9L and the VTR 40 are arranged.
The cord 11 for connection is connected. Further, on the electric printed circuit board 10, a liquid crystal drive circuit (X,
Y driver circuits 19X, 19Y), an audio amplifier, a power supply, and the like are mounted. In addition, the electric printed circuit board 10
A liquid crystal (LCD) panel 20 as one image display device is connected to a flexible printed board 21. On the screen 20a of the liquid crystal panel 20, an image with left and right reversed is displayed. The backlight 22 that irradiates the liquid crystal panel 20 with light from the back side is turned on when power is supplied from the electric printed board 10.
The image displayed on the screen 20a of the liquid crystal panel 20 is first reflected by the plane mirror 23 in the front, and further, a pair of plane mirrors 24R arranged in a V shape so as to sandwich the V-shaped recess on the bottom surface of the rear panel 2b, It is reflected at 24L.

The pair of plane mirrors 24R and 24L can be slightly rotated via the convergence angle adjusting knob 17 so that the convergence angles for both eyes can be changed. This convergence angle adjusting mechanism is shown in FIG. That is, when the operation portion 17a of the convergence angle adjusting knob 17 is moved, the lever portion 17b thereof is rotated about the shaft 18. By the rotation of the lever portion 17b, the pair of plane mirrors 24R, which are rotatably disposed on the bottom surface of the rear panel 2b via the shafts 25,
24L is a cylindrical portion 1 projecting from the tip of the lever portion 17b.
It is pushed forward by 7c, or returned to the rear by a pair of claw portions 17d, 17d protruding near the column portion 17c of the lever portion 17b. This pair of plane mirrors 2
The image light reflected by 4R and 24L is a pair of magnifying lenses 2
After passing through 6R and 26L, it is reflected by a pair of half mirrors 27R and 27L arranged in a V shape. The pair of half mirrors 27R, 27L are fixed on the respective bases 16a provided with the pair of interpupillary distance adjustment knobs 16R, 16L, and the respective interpupillary distance adjustment knobs 16R, 16L are reciprocated in the longitudinal direction of the apparatus main body 2. The eye width can be adjusted by moving it in parallel with the longitudinal direction.
The image light reflected by the pair of half mirrors 27R, 27L passes through the pair of filters 14R, 14L and reaches the left and right eyeballs L, R through the pair of eyepiece windows 13R, 13L. This optical system is shown in FIG. As shown in FIG. 6, when the plane mirror 24R is rotated like 24R ', the virtual image 2 seen by the eye R through the half mirror 27R.
9R rotates like 29R ', increasing the convergence angle.

A liquid crystal panel 20 arranged in the apparatus main body 2
7 (a) and 7 (b) shows the entire optical system including
Shown in. FIG. 7A is a plan view of the entire optical system.
(B) is a side view of the entire optical system. In FIG. 7B, the image on the screen 20 a of the liquid crystal panel 20 is the plane mirror 23.
And is reflected at the image at 28. This image 28 is further reflected by the pair of plane mirrors 24R and 24L and the pair of half mirrors 27R and 27L, respectively.
It appears to human eyes R and L that there is an image at 29L. Considering the pair of half mirrors 27R and 27L as the center, the pair of magnifying lenses 26R and 26L are 26R ′ and 26L.
It will be in the position of L ', but these 26R', 26
L'is arranged so as to be substantially parallel to 29R and 29L.

Further, the image 28 is viewed from the angle tilted left and right in FIG. At this time, the brightness of the pair of virtual images 29R and 29L may differ depending on the viewing angle characteristics of the liquid crystal panel 20, but the pair of filters 14
This is compensated by changing the color depth of R and 14L. Further, the backlight 2 of the liquid crystal panel 20
Remove the polarization filter (not shown) on the opposite side of 2,
The brightness of the pair of virtual images 29R and 29L may be changed by attaching a polarizing plate to the pair of filters 14R and 14L and changing the angle thereof. Since 27R and 27L are half mirrors, an external image (outside world) can be seen through the smoked glass 2a of the apparatus body 2.

Further, since the image 28 is viewed at an angle, a pair of virtual images 29R, 29R,
A trapezoidal distortion occurs in 29L (it looks like a trapezoid when the pair of magnifying lenses 26R and 26L are actually placed perpendicular to the optical axis). However, as shown in FIG. 7, a pair of virtual images 29R, 2R
When the pair of magnifying lenses 26R and 26L are arranged so that the pair of magnifying lenses 26R 'and 26L' are substantially parallel to 9L, as shown on the right side of FIG.
The trapezoidal distortion of R and 29L is greatly improved.

FIG. 9 is a block diagram of the video display circuit 30 used in the visual device 1. This video display circuit 30
Is a power input jack 31, power sources for a liquid crystal (LCD) panel 32, an amplifier power source 33, and a backlight inverter power source 34, a headphone amplifier 35,
A video signal input jack 37 for connecting the video signal of the VTR 40 to the RGB process circuit 36, an audio signal input jack 38 for inputting the audio signal from the VTR 40 to the headphone amplifier 35,
A controller circuit 39 for controlling the X, Y driver circuits 19X, 19Y is provided. Then, the video signal from the video signal input jack 37 is input to the RGB process circuit 36 and subjected to signal processing. R (red), G (green), B processed by the RGB process circuit 36
The (blue) signal is input to the controller circuit 39, and the liquid crystal panel 20 is driven via the X driver circuit 19X and the Y driver circuit 19Y.

According to the visual device 1 of the above embodiment, FIG.
As shown in, when the device body 2 is attached to the face,
Headphones 9R attached to the pair of handles 7R, 7L,
Insert 9L into both ears, and use a pair of handles 7R and 7L
Wear by putting on both ears. The small video camera 80 is attached to the handle 7 on the right side through the attachment attachment 83.
It is detachably attached to the R-shaped hook 7b. Then, the pair of eyepiece windows 13 of the rear panel 2b of the apparatus body 2
When looking into R and 13L, the image projected from the VTR 40 on the one liquid crystal panel 20 is illuminated by the backlight 22, and the one flat mirror 23 to the pair of flat mirrors 24R and 2L.
4L, a pair of magnifying lenses 26R and 26L, and a pair of half mirrors 27R and 27L are projected on the retinas of both eyes R and L, respectively.

As described above, since the liquid crystal panel 20 is made into one sheet, it is possible to greatly reduce the cost, and the binocular R,
Since the image displayed on one liquid crystal panel 20 can be viewed with L, there is no unnaturalness and no fatigue. Further, the arrangement of the pair of plane mirrors 24R, 24L, etc. of the optical system has an ergonomic structure that avoids the human nose, and is formed so as to divide the optical path of the optical system from the upper part inside the apparatus main body 2 to both sides. Therefore, the entire optical system can be compactly and compactly integrated. Furthermore, when one liquid crystal panel 20 is viewed by the left and right eyes, a pair of virtual images (images) 29R, 29L viewed by the left and right eyes becomes smaller inside, as shown on the left side of FIG. Although a trapezoidal distortion is generated, a pair of magnifying lenses 26R ', 26
By disposing L ′ so as to be substantially parallel to the pair of virtual images 29R and 29L, the trapezoidal distortion of the image can be easily corrected as shown on the right side of FIG. Furthermore, since one liquid crystal panel 20 is viewed at an angle from the left and right, the brightness may differ depending on the viewing angle characteristics of the liquid crystal panel 20, but this is optically processed to obtain the same brightness. So easy to see.

Although the eyeglass-type visual device 1 has been described according to the above-described embodiment, it may be a goggle type. Also,
According to the above-described embodiment, the liquid crystal panel 20 is arranged in the upper center of the apparatus main body 2 to be compact, but the liquid crystal panel 20 may be arranged at the position of the virtual image 28 in FIG. 7. In this case, since the screen 20a of the liquid crystal panel 20 and the virtual image 28 are mirror images of the plane mirror 23, they have the same function. Further, although the outside world is made visible by using the pair of half mirrors 27R and 27L in the above embodiment, it may be made a normal mirror so that the outside world cannot be seen.

[0021]

As described above, according to the visual device of the present invention, one image display device, a magnifying lens, and a plane mirror are provided, and the one image display device is arranged in the center of the main body of the device. Since the magnifying lens and the plane mirror are arranged at symmetrical positions in the main body of the apparatus, the image projected on the one image display device can be viewed by both eyes through the magnifying lens and the plane mirror arranged symmetrically. You can see. As a result, the cost of the entire visual device can be significantly reduced, and even when viewing an image displayed on a single image display device, there is no feeling of unnaturalness or fatigue.

[Brief description of drawings]

FIG. 1 is a perspective view of a visual device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the visual device viewed from the back side.

FIG. 3 is an enlarged perspective view of a hinge portion of a handle on the right side of the visual device.

FIG. 4 is a perspective view showing an internal structure of a device body of the visual device.

FIG. 5 is an enlarged perspective view of a convergence angle adjusting portion of the visual device.

FIG. 6 is an explanatory diagram of an optical system of a portion for adjusting a vergence angle of the visual device.

7A is a plan view of the entire optical system of the visual device, and FIG. 7B is a side view of the entire optical system.

FIG. 8 is an explanatory diagram for correcting trapezoidal distortion of an image of the visual device.

FIG. 9 is a block diagram of a video display circuit used in the visual device.

FIG. 10 is a perspective view showing a usage state of the visual device.

FIG. 11 is a perspective view showing a state in which eyeglasses are attached to the inside of a pair of handles of the visual device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Visual device 2 ... Device main body 7R, 7L ... A pair of handles 13R, 13L ... A pair of eyepiece windows 15 ... Nose pad (nose pad) 20 ... Liquid crystal panel (image display device) 23 ... Plane mirror 24R, 24L ... A pair of plane mirrors 26R, 26L ... A pair of magnifying lenses 27R, 27L ... A pair of half mirrors 80 ... A small video camera (small camera) 90 ... Glasses

Claims (9)

[Claims] 1. A visual device in which a casing-type device body having an image display unit is mounted on a face so that an image on the image display unit can be viewed, and a single image display device forming the image display unit. A magnifying lens and a plane mirror are provided, and the one image display device is arranged in the center of the apparatus body, and the magnifying lens and the plane mirror are arranged at symmetrical positions in the apparatus body, respectively. Visual device. 2. The visual device according to claim 1, wherein an inverted V-shaped nose pad portion is provided on a bottom surface side of the apparatus body, and the pair of flat mirrors are arranged in a V shape in the apparatus body so as to sandwich the nose pad portion. A visual device characterized by being arranged in a letter shape. 3. The visual device according to claim 2, wherein the angle of the pair of plane mirrors arranged in the V shape is variable, and the angle of convergence is adjustable by varying the angle of the pair of plane mirrors. A visual device characterized in that 4. The visual device according to claim 1, wherein a pair of eyepiece windows are provided on the back side of the device body, and a pair of half mirrors are arranged in a V shape with respect to the pair of eyepiece windows. Then, a visual device characterized in that the outside world can be seen at the same time as the image of the one image display device. 5. The visual device according to claim 1, wherein the virtual images viewed from the pair of magnifying lenses are not perpendicular to the optical axis, and trapezoidal distortion occurs in which the insides of the virtual images corresponding to the left and right eyes are reduced. In addition, a visual device characterized by being configured to optically correct this. 6. The visual device according to claim 5, wherein the pair of magnifying lenses are arranged substantially parallel to the virtual images to correct trapezoidal distortion of each virtual image. apparatus. 7. The visual device according to claim 1, wherein a liquid crystal panel is used as the one image display device, and when left and right brightness is different due to a viewing angle characteristic of the liquid crystal panel, this is optically corrected. A visual device characterized by that. 8. The visual device according to claim 1, wherein a pair of handles is provided on both sides of the device body, and glasses are detachably attached to the inside of the pair of handles. 9. The visual device according to claim 8, wherein a small camera is detachably attached to at least one handle.