JP3303359B2 - Glasses-type image display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allows a user to magnify images such as video images and television images displayed on a pair of LCDs (liquid crystal panels) through a pair of eyepieces in a face-mounted state. The present invention relates to a glasses-type image display device that can be used.

[0002]

2. Description of the Related Art For example, the present applicant has developed a glasses-type image display device capable of viewing video images and the like using an LCD.
This is disclosed in Japanese Patent Application No. 3-251667. This similar structure will be briefly described with reference to FIGS.
Reference numeral 00 denotes a glasses-type image display device, which is a substantially housing-type device main body 101 serving as a front frame thereof, and a pair of handles 102, 1 foldably attached to both sides of the device main body 101.
02 is eyeglass type. On the inverted V-shaped nose pad 101a at the lower center in the apparatus main body 101,
An inverted V-shaped reflecting mirror 103 is attached. This reflector 1
A fluorescent tube 104 is arranged above the mirror 03, and a pair of color liquid crystal panels (image display means) 105, 1 are arranged on both sides of the reflecting mirror 103 so as to straddle the nose pad 101a.
05 is erected. In each of the color liquid crystal panels 105, a convex condensing lens 106 is arranged substantially integrally with the color liquid crystal panel 105 via a deflection plate 107. Also,
A pair of convex eyepieces 108, 108 are respectively disposed on the left and right eyeballs A, A side in the apparatus main body 101, and a pair of condenser lenses 1 in the apparatus main body 101 are provided.
A pair of rectangular plate-like reflecting mirrors 109, 109 are arranged between the pair of eyepieces 108, 108, respectively. In FIG. 37, reference numeral 102a denotes an earphone attached to each handle 102.

As shown in FIG. 36, the spectacle-type image display device 100 is mounted on the face, and a pair of color liquid crystal panels 10 is mounted on a portable small VTR (not shown).
The images projected on the fluorescent lamps 5 and 105 are illuminated by the fluorescent tube 104, and from the pair of condenser lenses 106 and 106, the pair of reflecting mirrors 109 and 109 and the pair of eyepieces 108 and 10 are provided.
8 and projected onto the respective retinas a of the left and right eyeballs A, A (ie, a pair of color liquid crystal panels 105, 10).
5 is reflected by a pair of reflecting mirrors 109, 109, and a virtual image magnified by a pair of eyepieces 108, 108 comes to a position at a clear viewing distance).

[0004]

However, in the conventional eyeglass-type image display apparatus 100, the pair of right and left eyepieces 108, 108 are connected to each of the lens barrels 110 having a substantially square cylindrical shape.
Therefore, the reflected light from the inner wall surfaces of the left and right lens barrels 110 enters the pupil a 'of the user, and the images projected on the pair of color liquid crystal panels 105, 105 are difficult to see.

In view of the above, the present invention has been made to reduce the incidence of reflected light from the inner wall surfaces of a pair of lens barrels on a user's pupil, thereby facilitating viewing of images on a pair of image display means. A display device is provided.

[0006]

An image of a pair of image display means provided in the apparatus main body is enlarged through a pair of reflectors and a pair of eyepieces and projected onto the retinas of the right and left eyes. In the spectacle type image display device, the horizontal inner wall surface of each lens barrel supporting each eyepiece
Angle so that it spreads outward from the pupil side of the eyeball toward the reflector
The image display from the reflector on the inner wall in the vertical direction
Angle toward the indicating means.
They are subjected respectively reflected light preventing means constituted by the. The angle is set to 3 ° .

[0007]

The reflected light preventing means provided on the inner wall surface of each lens barrel reduces reflected light from the inner wall surface of each lens barrel entering the pupil. As a result, the image on each of the image display means has no shadow, and the image is easy to see. In addition, each reflected light
The preventive means is provided for each lens barrel supporting each eyepiece.
An outer space extends from the pupil side of the eyeball to the reflector on the inner wall in the horizontal direction
At an angle to the inner wall surface in the vertical direction.
Be wider toward the image display means side from the reflector
, And the angle is
Since the angle is set to 3 °, measures to prevent reflected light in each lens barrel can be implemented with a simple structure and at low cost.

[0008]

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

In FIGS. 1 to 3, reference numeral 1 denotes an eyeglass-type image display device, which is a substantially housing-type (goggle-type) device main body 10 which is located in front of the face when worn on the head and serves as an eyeglass portion; A pair of handles 20, 20 attached to both sides of the back (rear) surface of the device main body 10, an optical visual device 2 housed in the device main body 10 and comprising a backlight 30 and a pair of optical visual units 40, 40; And a pair of earphone storage mechanisms 80, 80 arranged at both ends in the apparatus main body 10.

The apparatus main body 10 is made of an opaque synthetic resin and has a front cabinet 11 having an inverted U-shaped vertical cross section, and an opaque synthetic housing having a front peripheral edge joined to a rear peripheral edge of the front cabinet 11 to form a hollow housing type. A rear cabinet 12 made of resin is used. As shown in FIG. 3, the rear cabinet 12 is formed into a U-shape in vertical section by an upper piece 12a, a rear piece 12b, and a lower piece 12c, and each of the inclined portions on both sides of the upper piece 12a. Is formed by integrally projecting a pair of cylindrical portions 13, 13. Also, the rear piece 1 of the rear cabinet 12 described above.
At the center of the lower piece 2b and the lower piece 12c, a substantially triangular concave nose escape portion 14 is formed on the front side, and a pair of rectangular pieces is formed on both sides of the nose escape portion 14 of the rear piece 12b. Eyepiece window 1
5, 15 are formed respectively. As shown in FIG. 28, each of the pair of eyepiece windows 15, 15 is provided with a rectangular plate-shaped transparent plate 16 made of polycarbonate or the like.

As shown in FIG. 3 and FIG.
Reference numerals 0 and 20 denote square-shaped front handles 21 made of synthetic resin,
Each rear handle 22 is slidably moved forward and backward within each front handle 21, and a band 23 having both sides fixed to the center of the inner surface of each front handle 21 is formed in an annular shape. The rear cabinet 12 of the apparatus main body 10 does not directly hit the forehead via the band portion 23. This pair of handles 2
The front projections 21a of the front handle portions 0 and 20 are pin-supported by the concave portions 13a and 13a formed in the pair of cylindrical portions 13 and 13 of the rear cabinet 12, respectively. In the pair of front handles 21, 21, each of the rear handles 22, 22 is provided by a knob 22 a provided on the tip side of each of the rear handles 22, 22.
Move forward and backward. This pair of stalks 2
2, 22 are formed in the shape of a metal plate,
Has flexible rubber plates 24 and 25 fixed thereto. One rubber plate 2 fixed to the right handle 22
4 has a gourd-shaped engaging hole 24a. A T-shaped boss 25a is integrally formed on the other rubber plate 25 fixed to the rear handle 22 on the left side. The boss portion 25a of the other rubber plate 24 is detachable from the engagement hole portion 24a of the one rubber plate 24. Each of the knobs 22a provided on the distal end side of each of the rear handles 22 is slidable along the long slot 21b of each of the front handles 21. As shown in FIG. 26, a connection cord 26 connected to, for example, a portable video player, a TV tuner, or the like is extended at the rear end of the left handle portion 21.

As shown in FIGS. 5 and 9, the backlight 30 of the optical visual device 2 has a mirror-finished inner curved surface (the mirror-finished portion is indicated by reference numeral 32 in FIG. 5) and also serves as a frame. A substantially semi-cylindrical reflector 31 made of synthetic resin
A long rectangular substrate 33 attached to a concave portion at the center of the inner surface of the reflector 31, one long fluorescent lamp 34 attached to the substrate 33, and at least one end of both ends of the substrate 33 A power supply unit 37 connected to the reflectors 31 and 36 via respective connectors 35 and 36; a central shielding plate 38a and a shielding plate 38b, 38b on both sides of the reflector 31 that partially close the inner concave side at the center and both sides of the reflector 31; Projection portions 31a, 3 projecting from the front and rear surfaces of
1b and a pair of shafts 39, 39.

The substrate 33 has a pattern (not shown) for lighting the fluorescent lamp 34. This substrate 33
A female connector 35 is fixed to the power supply unit 37 and is detachably connected to the male connector 36 of the power supply unit 37. As described above, the connection between the substrate 33 for supplying the high voltage to the fluorescent lamp 34 and the power supply unit 37 is performed by the connectors 35 and 3.
The connection between the six cables prevents noise or the like generated when the cables are connected by a cable or the like, and prevents short-circuiting or the like due to disconnection of the cable or the like, thereby enhancing safety against a high voltage.

A pair of optical vision units 40, 40 of the optical vision device 2 are for left and right eyes slidably supported by a pair of shafts 39, 39 disposed on the front and rear sides of the reflector 31. A pair of housing unit bodies 41, 41
A substantially rectangular frame-shaped LCD holder 43 provided vertically movably in a vertical direction via a shaft 42 standing vertically in each unit main body 41; and a diffusion plate mounted on the upper side of the LCD holder 43. 44 and this L
A transmission type color liquid crystal panel (image display means) 45 mounted in the CD holder 43;
1, each eyepiece 47 fitted into a rectangular opening on the front side of an L-shaped and rectangular lens barrel 46 fitted below the LCD holder 43, and the corner of this lens barrel 46. Each reflecting mirror (reflecting plate) 48 attached to the portion so as to be inclined by 45 °, and inserted into the shaft 42,
The compression coil spring 49 that always urges the CD holder 43 upward is roughly constituted.

The pair of unit main bodies 41, 41 of the pair of optical vision units 40, 40 are formed in a rectangular parallelepiped housing shape by a synthetic resin. As shown in FIG. 6, holding portions 41a, 41b, and 41b inserted into the shafts 39 are provided at the front center and the rear side of the upper surface of each unit main body 41.
Are integrally protruded, and each unit body 4
1 is such that each front side is located at the center side of the reflector 31 so that the convergence angle θ with respect to each shaft 39 is 2 ° to 8 ° (in this embodiment, for example, θ = 6 °). A little inclined. If the convergence angle θ is 0 °, in the case of binocular vision,
It is difficult to fuse the left and right images into one image, but if you add a convergence angle, the left and right images become one and it becomes easier to fuse, and if you add a convergence angle θ of 2 ° to 8 ° The angle becomes close to the natural resting position of the human binocular eyes (the position where the human focuses when the human is relaxed), and the image of each color liquid crystal panel 45 can be relaxed and viewed. That is, recent studies have shown that the focus and convergence of the eyeball in the absence of any visual object is in a resting position of 60 cm to 1 m.
In most cases, the user adjusts the focus of his / her eyes while looking at an object in the range of the resting position (60 cm to 1 m), and adjusts the focus of the eyepiece 47 so that the image can be clearly seen at that time. it is conceivable that. Since the distance between human pupils, including children, is between 40 mm and 75 mm,
The convergence angle when viewing the image center at the distance of 60 cm to 1 m is 2.3 ° to 7.15 °. Therefore, the convergence angle is set to about 2 ° to 8 ° so that the pair of optical vision units 40 and 40 see the object at the distance of the accommodation rest position.

As shown in FIG. 6, a tension coil spring 50 is interposed between the inner centers of the upper surfaces of the pair of unit main bodies 41, 41, and the pair of unit main bodies 4 is provided.
1, 41 are always slid toward each other toward the center of the pair of shafts 39, 39. Further, as shown in FIG. 8, an inverted U-shaped vertical sliding groove portion 41c is integrally formed on the rear side of the opposing side wall of each unit body 41. In each of the vertical sliding grooves 41c, an inverted U-shaped convex portion 43a integrally formed on one side of each of the LCD holders 43 is slidably supported. Thereby, each LCD holder 4
The rotation about the third shaft 42 is prevented. An L-shaped protrusion 43b is integrally formed on the other side of each LCD holder 43. A vertically extending shaft 42 is inserted through a vertical circular hole 43c formed at the base of each projecting portion 43b in each unit main body 41, and a horizontal circular hole 43d formed at the distal end.
The side is a vertical slot 4 formed on the rear wall side of each unit body 41.
It is exposed outside 1d.

Further, as shown in FIG. 30, a horizontal square tube of each of the L-shaped square tube lens barrels 46 fitted to the lower portions of the rear walls of the pair of unit bodies 41, 41, respectively. The inner wall surface 46a and the vertical rectangular inner wall surface 46b extend 3 ° outward with respect to a plane parallel to the optical path center C so as to spread outward from the pupil a 'side to each color liquid crystal panel 45 side. It is formed to be inclined. Each inner wall 4
Each reflection light preventing means is constituted by attaching an angle (3 °) to each of the color liquid crystal panels 45 from the pupil a 'side toward the color liquid crystal panel 45 side.

As shown in FIG. 5, a substrate 51, a flexible substrate 52, and the like are attached to the front side of each LCD holder 43 which moves vertically in each unit main body 41. Reference numeral 53 in FIG. 5 denotes a system (control) board mounted on the reflector 31.

The pair of optical vision units 40, 40
Is a lower piece 12c of the rear cabinet 12 of the apparatus main body 10.
Pair of eye width adjustment mechanisms 6 for the left and right eyes provided on the side
0 and 60 make it possible to freely approach and separate in the horizontal direction.
As shown in FIG. 13, each of the interpupillary distance adjusting mechanisms 60 includes an interpupillary distance adjusting knob 61 that slides in the left and right horizontal direction on the outer surface of the concave portion of the lower piece 12 c of the rear cabinet 12, and an inner surface of the lower piece 12 c. A sliding plate 62 made of a lubricating member such as a fitted POM or oil-impregnated plastic, and a screw 63 on a projecting portion 61a projecting from the back surface of the interpupillary distance adjusting knob 61 and projecting to the inner surface side of the concave portion of the lower piece 12c The curved portions 64a, 64a at both ends are constituted by metal leaf springs 64 which are urged against the slide plate 62. The distal end portion 61b of the protruding portion 61a of each of the interpupillary distance adjusting knobs 61 is connected to the lower center of the unit main body 41 of each of the optical vision units 40 via a stopper member 65. By sliding each of these interpupillary distance adjustment knobs 61 in the left-right direction, a pair of optical vision units 40, 40 is provided.
5 is the proximity within the range of the width H ₁ ~ width H ₂ of FIG. 7, so as to separate from (for example, a width H ₁ in this example
5cm, width H ₂ is set at 75cm). The protruding portion 61a of each of the interpupillary distance adjusting knobs 61 is loosely inserted into a slot 12c 'formed in a concave portion of the lower piece 12c and a slot 62a of the slide plate 62.

Further, the pair of optical vision units 40,
40, a pair of LCD holders 43, 43
The rear end of the rear cabinet 12 is vertically movable by a pair of diopter adjustment mechanisms 70 provided on the upper piece 12a side of the rear cabinet 12. As shown in FIGS. 11 and 12, each diopter adjustment mechanism 70 is
a diopter adjustment knob 71 that slides in the left-right direction on the outer surface of the recessed portion a, a slide-receiving plate 72 made of a lubricating member such as POM or oil-impregnated plastic fitted on the inner surface of the recessed portion of the upper piece 12a; Projecting portion 71 projecting from the back surface of diopter adjusting knob 71 and projecting to the inner surface side of the concave portion of upper piece portion 12a
a through the screw 73, and the curved portions 74 at both ends.
a and 74a are slid in the up and down direction via a metal leaf spring 74 urged against the above-mentioned to-be-slided plate 72 and holding portions 31c formed integrally with the upper end of the rear surface of the reflector 31. 75, and a pair of arm portions 75 integrally formed below the slide plate 75.
a between the LCD holders 43 and 75a.
Shaft 76 inserted into the lateral hole 43d of the projection 43b
It is composed of

Projection 71a of each diopter adjustment knob 71
The tip portion 71b further extends downward in an L-shape, and a pin 77 as a cam follower is mounted on the slide plate 75 side of the tip portion 71b. This pin 77 is formed in a cam hole 75 formed obliquely in the center of the slide plate 75.
b. By sliding each diopter adjustment knob 71 in the left-right direction, a pair of optical vision units 4
With the 0 and 40 stopped, the LCD holder 43 of each optical vision unit 40, that is, the color liquid crystal panel 45
Is moved up and down to enable fine adjustment of diopter.
The projection 71a of each of the diopter adjustment knobs 71 is loosely inserted into a slot 12a 'formed in the recess of the upper piece 12a and a slot 72a of the slide plate 72. Also, the upper piece 12a
The diopter can be adjusted separately for both eyes by the diopter adjustment knobs 71 disposed on the left and right of the front cabinet 11, for example, when adjusting the diopter of the optical vision unit 40 for the left eye. Switch 5 located on the right side of the upper surface of the
5R, the image on the color LCD panel 45 for the right eye is blackened, a test pattern is displayed on the image on the color LCD panel 45 for the left eye, and the diopter adjustment knob 71 for the left eye is moved without winking. You can focus on it. Also, when adjusting the diopter of the optical vision unit 40 for the right eye, the tact switch 55L disposed on the left side of the upper surface of the front cabinet 11 and the diopter adjustment knob 71 for the right eye similarly to the left side. The right eye can be focused.

As shown in FIGS. 15 to 22, the pair of earphone storage mechanisms 80, 80 are provided with respective storage cases 83 for storing the outer ear insertion type earphones 81 and their cords 82.
The reels 87 are rotatably supported in the respective storage cases 83 via the mounting plate 85 and take up the cords 82 of the earphones 81. The reels 87 take up the cords 82 of the earphones 81. Each of the main springs (spring members) 89 for urging in the direction and cord length adjusting means 90 for adjusting the winding length of the cord 82 of each earphone 81 of each reel 87 are roughly constituted.

As shown in FIG. 16, each spring 87 is pushed into the annular rib 87a projecting from the surface of each reel 87 via a spacer 91. It is hooked on a pair of notches 87b, 87b of the rib 87a. As shown in FIG. 17, a pair of contact terminals 92, 92 are fitted and welded to a pair of bosses 87c, 87c projecting from the back surface of each of the reels 87. On the back surface of each reel 87, three ratchet portions 88, 88, 88 are integrally formed to protrude annularly. As shown in FIGS. 18 and 19, the knot ball portions 82a provided at the ends of the cords 82 are engaged with the slits 87d formed in the ratchet portions 88, 88, 88 of the reels 87, and the remaining portions remain. Each code 82 of the part
Is wound around each reel 87. A pair of conductors 82b, 82b on the knot portion 82a side of each cord 82 are soldered to the pair of contact terminals 92, 92, and the raised conductors 82b, 82b are placed in a slit 87d. Thus, the workability is improved because each cord 82 is fixed to each reel 87 by the knot portion 82a.

Each of the reels 87 having the above-described structure is attached to each of the mounting plates 8.
It is rotatably supported via a holding plate 93 on a shaft 86 caulked and fixed to 5. As shown in FIGS. 20 and 21, each mounting plate 85 has three protrusions 85a, 85b, 85c.
Are integrally protruded, and one of the surfaces of each mounting plate 85 is formed.
A contact board 94 is fixed to the second protruding portion 85a via an adhesive sheet (not shown). On the back surface of the second protruding portion 85b of each mounting plate 85, each lock arm 95 is pivotally supported by a pin, and each lock arm 95 has a distal end 95a having three ratchet portions of each of the reels 87. 88
Are urged by a tension coil spring 96 so as to be locked. Further, the third protrusion 8 of each of the mounting plates 85
A shaft 97 is fixed by caulking to the surface of the pulley 9c.
8 is rotatably supported.

As shown in FIG. 22, a slit 86a of a shaft 86 of each of the mounting plates 85 has a spring 86
The other end 89b of the shaft 9 is locked, and the pressing plate 93 is attached to the tip of the shaft 86 through a gouge-shaped engaging hole 93a. Each of the reels 87 rotatably supported on a shaft 86 of each mounting plate 85 has a pair of screws 99, 99 mounted on each mounting plate 85.
Are covered with the respective storage cases 83, and the cylindrical earphone storage portions 83 of the respective storage cases 83 are fixed.
Each earphone 81 is stored in a. When each earphone 81 is stored, each reel 87 is
The cord 82 of the earphone 81 is wound around a reel 87 by rotating the spring 82 in advance to apply an initial torque to the mainspring 89. Further, a position facing the base end 95b of the lock arm 95 pivotally supported by the second protrusion 85b of each mounting plate 85 of each of the storage cases 83 via an inverted U-shaped elastic piece 83b. Button 84 is integrally formed. The button 84 of the storage case 83, each ratchet portion 88 of the reel 87, the lock arm 95, and the tension coil spring 96 are used to adjust the cord length adjusting means 9.
0 is configured. Note that the earphone 81 and the button 84 of each of the storage cases 83 are exposed outside.

According to the spectacles-type image display device 1 of the embodiment described above, when the device main body 10 is mounted on the face, the rear handle portions 22 of the pair of handles 20 and 20 are connected to each front via the knob portion 22a. After being slid with respect to the handle portion 21 to adjust its length to the head portion, the user wears the handle portion. Next, the user looks into the pair of eyepiece windows 15, 15 of the rear cabinet 12 of the apparatus main body 10, and moves the respective eye width adjustment knobs 61 of the pair of eye width adjustment mechanisms 60, 60 on the lower side of the apparatus main body 10 in the left-right direction. Slide them separately,
Match with left and right eyes. Thus, even when the user has a slightly different distance between the left and right eyeballs A, A from the nose, the pair of optical vision units 40, 40 are located at the positions of the left and right eyeballs A, A of the user.
The position of each eyepiece 47 can be surely matched, and the pair of eyepieces 47, 47 whose positions are matched are located in the pair of eyepiece windows 15, 15.

The pair of optical vision units 40,
When performing the diopter adjustment of 40, each diopter adjustment knob 71 of a pair of diopter adjustment mechanisms 70, 70 on the upper side of the apparatus main body 10.
Are separately slid in the left-right direction to match the left and right eyeballs A, A, respectively. As shown in FIG. 10, for example, when performing diopter adjustment of the optical vision unit 40 for the right eye, the diopter adjustment knob 71 is slid to the left as shown by the arrow in FIG. By lowering the plate 75 or sliding the diopter adjustment knob 71 to the right as shown by the arrow in FIG. 10B to raise the slide plate 75, the color on the right side via the LCD holder 43 on the right side. The liquid crystal panel 45 is moved up and down to focus. In this case, the left tact switch 55L on the upper surface of the front cabinet 11 is pressed to make the image of the left color liquid crystal panel 45 black.

Further, the right optical vision unit 40
Even if the diopter adjustment is performed before the eye width of the slide plate 75 is adjusted, the protrusion 43b of the LCD holder 43 on the right-hand side can be adjusted by the shaft 7 between the pair of arms 75a, 75a of the slide plate 75.
Since the user only slides 6, the diopter adjustment does not change, and the diopter adjustment and the interpupillary adjustment can be adjusted without affecting each other's movements. With this configuration, the diopter adjustment knob 71 and the interpupillary distance adjustment knob 61 can perform independent adjustments regardless of the position of each of the knobs 61, 71. Also, as shown in FIGS.
71 is a curved portion 64a, 6 at both ends of each leaf spring 64, 74.
4a and 74a, 74a, each slide plate 62, 7
Since a predetermined friction (friction) force is applied to 2 and a load is applied to the slide, the position of the interpupillary adjustment and the position of the diopter adjustment can be reliably maintained. Further, the leaf springs 64, 7 of the knobs 61, 71 are used.
Since each of the curved portions 64a, 74a of 4 is slid on the slide plates 62, 72 made of a lubricating member,
The difference between the dynamic friction and the static friction at the time of sliding can be reduced, and the positions of the knobs 61 and 71 can be finely adjusted at the time of adjusting the interpupillary distance and diopter by the knobs 61 and 71, thereby reducing excessive slippage. In this way, the operations of adjusting the interpupillary distance and the diopter can be easily performed. The diopter of the left-eye optical vision unit 40 is adjusted by pressing the right tact switch 55R on the upper surface of the front cabinet 11 and the left diopter adjustment knob 71.
Is performed in the same manner as the diopter adjustment of the right eye.

Next, a pair of earphones 81, which project slightly outside both sides of the rear cabinet 12 of the device body 10,
81 is pulled out from each of the storage cases 83 of the pair of earphone storage mechanisms 80, 80 stored on both sides in the apparatus main body 10, and inserted into the outer ear. When an image is projected on the display unit 45a of each color liquid crystal panel 45, light emitted from one fluorescent lamp 34 of the backlight 30 is reflected by the mirror surface 32 of the reflector 31 as parallel light as shown in FIG. The display unit 45a of each color liquid crystal panel 45 is irradiated. The transmitted light of the emitted light is reflected by each of the reflecting mirrors 48, and the image viewed as the transmitted light by each of the eyepieces 47 can be enlarged and viewed on the retinas a of the left and right eyes A, A, and The audio of the video can be heard through each earphone 81. Note that the left and right video signals generated based on the principle of binocular parallax stereoscopic display are displayed on the display units 45a of the left and right color liquid crystal panels 45, respectively, so that stereoscopic video can be enjoyed.

When each earphone 81 is pulled out of the storage case 83, the reel 87 rotates via the pulley 98. At this time, the reel 87 does not rewind because the tip end portion 95a of the lock arm 95 is hooked on the ratchet portion 88 provided on the reel 87. Here, when a button 84 formed integrally with each of the storage cases 83 is pressed,
The lock arm 9 located on the back side of each button 84
5 is rotated, and the distal end 95a of the lock arm 95 is disengaged from the ratchet portion 88 of the reel 87, so that the reel 87 rotates and the cord 82 of the earphone 81 is automatically wound on the reel 87. Can be In this manner, the length of the cord 82 of the earphone 81 can be freely adjusted, so that the cord 82 can be adjusted to an optimum length when the earphone 81 is used. And is stored in the storage case 83, so that it is excellent in portability. Furthermore, by pulling out the cord 82 of the earphone 81 via the pulley 98 and winding it up, the tensile force of the cord 82 is not directly applied to the reel 87, so that the strength of the winding section including the reel 87 is greatly improved. be able to. Further, since the cord 82 can be bent by the pulley 98, the cord 82 can be arranged in a narrow space in the storage case 83 rather than projecting the cord 82 from a tangent line of the reel 87.

As described above, the backlight 30 is constituted by the reflector 31 and one fluorescent lamp 34 and the like, and each color of the pair of optical visual units 40, 40 is provided by the single fluorescent lamp 34 via the reflector 31. Since the display section 45a of the liquid crystal panel 45 is illuminated with light, it is possible to eliminate the difference between the left and right color temperatures and the brightness of the pair of color liquid crystal panels 45, 45 and obtain an image having the same left and right color temperatures and brightness. it can. Each of the shielding plates 38a and 38b, 38b is attached to both sides and the center of the reflector 31 on the mirror surface 32 side, so that one pair of color liquid crystal panels 45, 45 of the pair of optical vision units 40, 40 is irradiated. The light of the fluorescent lamp 34 can be prevented from leaking outside, and the light of the fluorescent lamp 34 can be radiated vertically and efficiently to the display 45a of each color liquid crystal panel 45. Further, since the power supply unit 37 for supplying a high voltage to the fluorescent lamp 34 and the substrate 33 to which the fluorescent lamp 34 is attached are connected by the connectors 35 and 36, they need not be connected by cables or the like. In addition to suppressing the noise generated, the short circuit due to the disconnection of the cable or the like can be reliably prevented, and the safety against the high voltage can be improved.

Further, a pair of optical vision units 40, 40
A pair of shafts 39 attached to the reflector 31,
Since it is arranged movably in the left and right horizontal directions along 39, the structure of the pair of eye width adjusting mechanisms 60, 60 for adjusting the eye width of the pair of optical vision units 40, 40 can be simplified. By adjusting the position of each eyepiece 47 of each optical vision unit 40 to the position of the left and right eyes separately, it is possible to extremely easily and reliably adjust the interpupillary distance, which differs depending on the user.

Then, the eyepiece 47 is vertically erected and fixed at a position facing each eyeball A of the unit main body 41 of each optical vision unit 40, and faces the eyepiece 47 in each unit main body 41. The reflection mirror 48 is fixed at an oblique position, and the color liquid crystal panels 45 are attached to the reflection mirror 48 with respect to the unit main bodies 41.
Are arranged in the horizontal direction via the LCD holder 43 so as to be freely movable in the vertical direction, so that the images of the respective color liquid crystal panels 45 of the respective optical visual units 40 can be transmitted through the respective eyepieces 47 by so-called longitudinal refraction. The projection can be made on the retina a of the eyeball A, and the diopter can be easily adjusted. Thereby, each eyepiece 47 of each optical vision unit 40 can be brought as close as possible to each eyeball A, and the image of each color liquid crystal panel 45 can be seen more easily. Since the diameter of the lens 47 can be reduced, the size of each optical vision unit 40 can be further reduced.

As described above, each of the color liquid crystal panels 45
Is made movable in each unit main body 41, and each eyepiece 47 is fixed to one rear side of each unit main body 41 via a lens barrel 46, so that each eyepiece 47 and the pupil a of each eye A The distance between each eyepiece 47 and the pupil a 'of each eyeball A can be made constant without changing the distance of the virtual image, and the image can be viewed in the same screen as the virtual image in a stable state without chipping. That is, as shown in FIG. 35A, when the color liquid crystal panels 45 are moved from the position a to the position b to adjust the diopter (focus adjustment), the eyepieces 47 and the pupil of the eyeball A are adjusted. The position of a 'does not change at the distance X,
Virtual images are formed at positions a ″ and b ″ with respect to a and b, respectively. Since this virtual image always changes its position within the angle of view of Z °, it is always seen from the pupil a ′ of the eyeball A at a constant angle of view of Z °. On the other hand, in the case of the conventional glasses-type image display device 100 shown in FIG.
8, the distance X between each eyepiece 108 and the pupil a 'changes, and the virtual image Z °
There is a possibility that the outside diameter of the lens enters the inside of the lens and the hatched portion S shown in FIG. However, the glasses-type image display device 1 can reliably prevent the peripheral portion of the virtual image Z ° from being lost.

Further, each of the optical vision units 40 has a convergence angle θ of 6 ° (θ =
(Set in the range of 2 ° to 8 °), so that the apparatus main body 10 is attached to the face, and when the image of the color liquid crystal panel 45 of each optical vision unit 40 is viewed, Fatigue and psychological and mental fatigue coming from eyes can be reduced, and can be used for a long time, and unspecified number of uses are possible. Furthermore,
Each of the color liquid crystal panels 45 is formed of a transmissive thin plate, and the reflector 31 has a role of a frame. Therefore, the size and weight of each optical vision unit 40 and the backlight 30 can be reduced. More can be achieved.

The horizontal rectangular inner wall surface 46a and the vertical rectangular inner wall surface 46b of each of the L-shaped and rectangular lens barrels 46 of each of the optical vision units 40 are described.
Are formed so as to incline outward by 3 ° with respect to a plane parallel to the optical path center C so as to spread from the pupil a ′ side to each color liquid crystal panel 45 side, so that the inner wall surface 46 of each lens barrel 46 is formed.
It is possible to reduce the amount of reflected light of a and 46b entering each pupil a '. That is, the unit 40 is of an optical path type in which the image of each color liquid crystal panel 45 is refracted by each reflection mirror 48, and as shown in FIG. When the inner wall surface 46a '(the same applies to the inner surface of the rectangular tube in the vertical direction) is set in parallel with the optical path center C, when there is a light beam radially emitted from the point c of the display unit 45a of each color liquid crystal panel 45. This light beam is reflected by the inner wall surface 46a 'and enters the pupil a'. The reflected and incident light flux is shown by dots in FIG. Further, as shown in FIG. 31B, the horizontal rectangular inner wall surface 46a of each lens barrel 46 (the same applies to the vertical rectangular inner wall surface 46b side) is set to the optical path center C. If it is set to incline outward by 3 ° with respect to the parallel plane, the amount of light reflected by the inner wall surface 46a 'of the luminous flux emitted from the point c of the display unit 45a of each color liquid crystal panel 45 and incident on the pupil a' is drastically reduced. (The reflected and incident light flux is shown by dots in FIG. 31B). Therefore, it is possible to reduce the amount of reflected light from the inner wall surfaces 46a and 46b of the lens barrels 46 entering each pupil a '. This eliminates the so-called ghost (shadow) from appearing in the image on each of the color liquid crystal panels 45, making the image easier to see. Further, the reflected light preventing means is formed by forming an inner wall surface 46a, 46b of each of the lens barrels 46 at an angle of 3 ° so as to spread outward from the pupil a 'side of the eyeball A toward the color liquid crystal panel 45 side. Therefore, each lens barrel 4
6 can be implemented simply by tilting the inner wall surfaces 46a and 46b, and at a low cost, measures to prevent reflected light in each lens barrel 46 can be implemented.

According to the above embodiment, the leaf spring 64 of the interpupillary distance adjusting knob 61 is connected to the lower piece 12c of the rear cabinet 12.
The slide plate 62 made of a lubricating member attached to the slide plate is slid. However, as shown in FIGS.
The lower piece 12c may be formed of a lubricating member such as POM, and the leaf spring 64 may slide on a pair of lubricating ribs 12d formed integrally with the inner surface of the lower piece 12c. The same applies to the diopter adjustment knob 71). Further, the optical vision unit 40 is tilted with respect to the pair of shafts 39, 39 of the backlight 30 so that the convergence angle θ is set to, for example, 6 ° (θ is set in a range of 2 ° to 8 °). However, as shown in FIG. 34, the optical vision unit 40 is arranged without being inclined with respect to the shaft 39, and the center of the screen of the color liquid crystal panel 45 of the optical vision unit 40 is shifted by t with respect to the optical axis. The convergence angle θ may be set in a range of 2 ° to 8 ° by displacing the convergence angle toward the center. Furthermore, the inclination angle of the inner wall surface of the lens barrel
It is also possible to prevent reflected light in the lens barrel from completely entering the pupil by changing .

[0038]

As described above, according to the present invention, the image of the pair of image display means provided in the apparatus main body is enlarged through the pair of reflectors and the pair of eyepieces to enlarge the left and right images. In a spectacle-type image display device configured to project onto the retina of the eyeball, the horizontal inner wall surface of each lens barrel supporting each eyepiece is directed from the pupil side of the eyeball to the reflector.
Angle so that it spreads outside
Spreads from the reflector to the image display means side on the inner wall of the building
The reflected light preventing means constituted by forming an angle so that the angle becomes 3 ° is applied, and the angle is set to 3 °, so that the reflected light on the inner wall surface of each lens barrel can be reduced from entering each pupil. Thus, it is possible to make it easy to see the image on each of the image display means. In addition, it is possible to implement measures to prevent reflected light in each lens barrel at a low cost with a simple structure that only inclines the inner wall surface of each lens barrel.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a glasses-type image display device showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the glasses-type image display device.

FIG. 3 is an exploded perspective view of the glasses-type image display device.

FIG. 4 is a perspective view of an optical visual device used in the glasses-type image display device.

FIG. 5 is a sectional view of the optical visual device.

FIG. 6 is a plan view of the optical visual device.

FIG. 7 is a rear view of the optical vision device.

FIG. 8 is a partially broken perspective view of a main part of the optical visual device.

FIG. 9 is an exploded perspective view of a backlight used in the optical visual device.

FIGS. 10A to 10C are explanatory diagrams showing states of diopter and interpupillary adjustment of each optical visual unit used in the optical visual device.

FIG. 11 is a perspective view of a diopter adjustment mechanism of each of the optical vision units.

FIG. 12 is a sectional view of a diopter adjustment knob used in each of the optical vision units.

FIG. 13 is a sectional view of an interpupillary distance adjusting knob used in each of the optical vision units.

FIG. 14 is a sectional view taken along line XX in FIG. 13;

FIG. 15 is a perspective view of an earphone storage mechanism used in the glasses-type image display device.

FIG. 16 is an exploded perspective view of the earphone storage mechanism on the reel side.

FIG. 17 is a perspective view of the reel as viewed from the back side.

FIG. 18 is an exemplary perspective view showing a state where an earphone cord is wound around the reel;

FIG. 19 is an exemplary plan view showing a state where an earphone cord is wound around the reel;

FIG. 20 is an exploded perspective view of a mounting plate on which a reel of the earphone storage mechanism rotates.

FIG. 21 is a perspective view of the mounting plate seen from the back side.

FIG. 22 is an exploded perspective view of the earphone storage mechanism.

FIG. 23 is a plan view of the glasses-type image display device.

FIG. 24 is a front view of the glasses-type image display device.

FIG. 25 is an explanatory diagram of a connecting portion of a pair of handles of the eyeglass-type image display device.

FIG. 26 is a left side view of the glasses-type image display device.

FIG. 27 is a right side view of the glasses-type image display device.

FIG. 28 is a rear view of an apparatus main body of the glasses-type image display apparatus.

FIG. 29 is a bottom view of the apparatus main body.

FIG. 30 is an explanatory cross-sectional view of a lens barrel portion of the eyeglass-type image display device.

31A is a simulation of reflected light in the lens barrel when the inner wall surface of the lens barrel has a wall structure parallel to the optical path center, and FIG. 31B is a diagram illustrating the simulation of the lens barrel. Simulation of reflected light in the lens barrel when a wall structure is used in which the inner wall surface of the lens is inclined by 3 ° with respect to the optical path center.

FIG. 32 is a sectional view of an interpupillary distance adjusting knob according to another embodiment.

FIG. 33 is a sectional view corresponding to FIG. 14 of an interpupillary distance adjusting knob according to another embodiment.

FIG. 34 is an explanatory diagram of a convergence angle of the optical vision device of another embodiment.

FIG. 35 (a) is an explanatory diagram of an optical system of the above-mentioned glasses-type image display device, and FIG. 35 (b) is an explanatory diagram of an optical system of a conventional glasses-type image display device.

FIG. 36 is a schematic configuration diagram of a conventional glasses-type image display device.

FIG. 37 is a perspective view showing a state of use of a conventional glasses-type image display device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Eyeglass-type image display apparatus 10 ... Device main body 45, 45 ... A pair of color liquid crystal panels (A pair of image display means) 47, 47 ... A pair of eyepieces 48, 48 ... A pair of reflection mirrors (A pair of reflection plates) 46 , 46: a pair of lens barrels 46a, 46b: inner wall surface A: eyeball a: retina a ': pupil

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/64-5/655

Claims (2)

(57) [Claims] 1. An eyeglass-type image in which an image of a pair of image display means provided in an apparatus main body is magnified through a pair of reflectors and a pair of eyepieces and projected onto retinas of right and left eyes. In the display device, the horizontal inner wall surface of each lens barrel supporting each of the eyepieces is positioned from the pupil side of the eyeball.
Make an angle so that it spreads out toward the reflector,
The vertical inner wall faces the image display means side from the reflector.
It is configured by making an angle so that it spreads outside
Glasses-type image display device, each of which is provided with a reflected light preventing means. 2. An eyeglass-type image display device according to claim 1, wherein said angle is 3 ° .