JPH11327750A - Spectacle type picture display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a miniaturized and thin picture display which eliminates influences upon a display part of a noise from noise sources such as a power source, which reduces load on a user and is easy to design. SOLUTION: This device 100 is equipped with a spectacle part to constitute a display part 3 having a liquid crystal panel 6 to display a picture, and with a power source part which is equipped with a power source for driving a light source for a back light of the liquid crystal panel 6 and a power source for driving a light source 103. Here, the spectacle part and the power source part are arranged separately from each other and it is designed that the liquid crystal panel 6 and the light source are connected by an optical fiber 104.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle type image display device using a liquid crystal display panel or the like, and more particularly, to a spectacle type image display device which can be mounted on a user's eyeball and allows a large-screen image to be sensed. It is suitable.

[0002]

2. Description of the Related Art In recent years, a video image input from a computer or a video device is observed by a spectacle type image display device, and a user can experience a 50-inch large powerful screen as if 2 meters away (for example, a so-called spectacle type image display device). Glastron (a registered trademark of Sony Corporation) has been released and is well received.

A color liquid crystal display panel is mainly used in such an eyeglass type image display device. An aspheric lens is arranged on the front of the color liquid crystal panel, and a backlight is arranged on the back of the color liquid crystal display panel.

When using the spectacle-type image display device, the user wears the spectacle-type image display device on his / her head, and enlarges and projects the image projected on the color liquid crystal display panel forward by the aspherical lens. This allows the user to experience a large-screen virtual image.

[0005] A conventional glasses-type image display device has a configuration shown in FIG. The glasses-type image display device 51 basically includes a ring unit 52 and a display unit 53. A pad 54 is provided on the ring portion 52,
The pad 54 is pressed against the forehead of the user P,
By putting 2 on the head of the user P, the spectacles type image display device 51 can be worn as if wearing spectacles. In addition, the ring section 52 is provided with an earphone 67 for listening to sound. This earphone 6
7 is a round take-up portion 67A in the ring portion 52
Is stored in.

The display section 53 has a case section 64 in which optical components are arranged and a spectacle-shaped lens 66. An eave portion 65 for blocking light from an external light source such as sunlight or indoor lighting is provided in front of the case portion 64.

A backlight 57 is provided in a case portion 64 of the display portion 53, and a liquid crystal display panel LCD (Liquid Crystal Display) 5 provided on each of the left and right sides.
6 (56L, 56R) is illuminated from behind. The backlight 57 includes a fluorescent lamp 62 and a reflector 63 (see FIG. 8).

[0008] Of the LCDs 56 (56L, 56R), a left-eye image is displayed on the LCD 56L provided on the left side, and a right-eye image is displayed on the LCD 56R provided on the right side.

A pair of left and right aspheric lenses 60 are provided between the mirror 58 and the half mirror 59.
The image displayed on the CD 56 (56L, 56R) is enlarged and formed on the eye E of the user P (displaying a virtual image).

FIG. 8 is a side view of the display unit 53 of the glasses-type image display device 51 shown in FIG. 7 and 8
As shown in the figure, the image displayed on the LCD 56 is reflected by the mirror 58, and the image displayed on the LCD 56 is
After being reflected by the mirror 58 and converged by the aspherical lens 60, it is further reflected by the half mirror 59 and enters the eye E of the user P through the eyeglass-shaped lens 66.

A D / A converter 61 for supplying electric power for driving the backlight 57 is disposed between the left and right mirrors 58. Since the power supplied to the backlight 57 is relatively high, arranging the D / A converter 61 too far from the backlight 57 is disadvantageous in terms of withstand voltage. Therefore, in this example, D /
An A-converter 61 is arranged between the left and right mirrors 58.

The display unit 53 is connected to the display unit 53 through the side of the ring unit 52 and the electric wire 68.
3 is connected to the display unit 53 via a wire 68.
A power supply box (not shown) for supplying audio is connected.

[0013]

However, D / A
Since the converter 61 and the fluorescent lamp 62 are noise sources, when designing the apparatus, it is necessary to prevent the influence of the noise of the D / A converter 61 and the like from affecting the image displayed on the LCD 56. Therefore, these noise sources are separated from the LCD 56, and the display unit 53 needs to be enlarged. Thus, the display unit 5
When 3 is increased, the entire size of the glasses-type image display device 51 increases, and its weight increases, so that the burden on the user increases.

Further, as is well known, there is an ineffective portion 57a that does not emit light at both ends of the fluorescent lamp 62. Therefore, it is necessary to enlarge the display unit 53 in consideration of the ineffective portion 57a.

In order to solve the above-mentioned problems, the present invention eliminates the influence of noise from a noise source such as a power supply on a display unit, reduces the size and thickness, and reduces the burden on the user. An object of the present invention is to provide a spectacle type image display device which is easy to design.

[0016]

SUMMARY OF THE INVENTION An eyeglass-type image display device according to the present invention comprises: an eyeglass portion having a liquid crystal display panel to constitute a display portion for displaying an image; a light source for a backlight of the liquid crystal display panel; A power supply unit having a power supply for driving the light source is provided. The glasses unit and the power supply unit are separately arranged, and the liquid crystal display panel and the light source are connected by an optical fiber.

According to the configuration of the present invention described above, since the power supply section and the glasses section are provided separately, the influence of the noise of the power supply for driving the backlight can be reduced by separating the power supply section and the glasses section. It is possible to prevent the image from being displayed on the display panel. Then, by supplying light from a light source through an optical fiber, the backlight of the liquid crystal display is performed.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a spectacle section having a liquid crystal display panel and constituting a display section for displaying an image,
A light source for a backlight of the liquid crystal display panel and a power supply unit having a power supply for driving the backlight unit are provided. The glasses unit and the power supply unit are separately arranged, and the space between the liquid crystal display panel and the light source is provided by an optical fiber. This is a glasses-type image display device connected.

According to the present invention, in the above-mentioned eyeglass type image display device, the backlight is constituted by a bundle of optical fibers,
The backlight is configured such that the end face on the liquid crystal display panel side is widened.

According to the present invention, in the above-mentioned spectacles type image display device, the backlight is constituted by a bundle of optical fibers,
The side surface of the backlight is opposed to the liquid crystal display panel, the side surface is widened, and a hole corresponding to an optical fiber is provided on the side surface.

FIG. 1 is a schematic configuration diagram (perspective view) of a spectacle type image display device 100 as one embodiment of a spectacle type image display device according to the present invention.

The spectacle type image display device 100 is suitable for use in a display device for a computer device or a display device of a reproduced video image, and is roughly divided into a ring portion 2 and a display portion 3 serving as a spectacle portion. It has a part.

The ring portion 2 is provided with a pad 4. The pad 4 is pressed against the forehead of the user P, and the ring portion 2 is hung on the head of the user P. The glasses-type image display device 100 can be mounted.

In addition, the ring unit 2 is provided with an earphone 11 for listening to voice. This earphone 11
Is stored in a round-shaped winding portion 11A in the ring portion 2.

The display section 3 includes a case section 12 in which optical components are arranged, and a spectacle-like lens 14 made of glass or the like. The lens 14 may be provided separately from the case 12 as in this case, or may be provided integrally with the case 12.

An eave portion 13 for blocking light from an external light source such as sunlight or indoor lighting is provided in front of the case portion 12.

The display unit 3 has a liquid crystal display panel LCD (Liquid Cry
stal Display) 6 (6L, 6R). Then, among these LCDs 6 (6L, 6R), the left-eye image is displayed on the LCD 6L provided on the left side, and the right-eye image is displayed on the LCD 6R provided on the right side.

A pair of left and right aspherical lenses 10 are provided between the mirror 8 and the half mirror 9, and the images displayed on the LCD 6 are enlarged by the aspherical lenses 10 for the user P. An image is formed on the eye E (a virtual image is displayed).

FIG. 2 is a side view of the display unit 3 of the glasses-type image display device 100 shown in FIG. As shown in FIG. 2, the image displayed on the LCD 6 is reflected by a mirror 8, converged by an aspherical lens 10, further reflected by a half mirror 9, and passed through a spectacle-shaped lens 14 for the user P. It is made to enter the eye E.

Further, a power supply box 101 as shown in FIG. 3 is connected to the display unit 3 as a power supply unit for supplying light and video / audio to the display unit 3.

The power supply box 101 shown in FIG.
A battery (not shown) is disposed inside, and a D / A converter 102 is connected to the battery. This D / A
The converter 102 performs DC / AC conversion, and
The electric power (AC voltage) for driving the driving circuit 03 is supplied.

As the light source 103, for example, a metal halide lamp, a halogen lamp, or various fluorescent lamps can be used. On the output side of the light source 103, an optical fiber 1
04 is connected. And this optical fiber 104
Is guided behind the LCD 6 of the display unit 3 and the light source 1
The LCD 6 is arranged so as to irradiate the LCD 03 with light 03. That is, the light emitted from the optical fiber 104 illuminates the LCDs 6 (6L, 6R) provided on the left and right from behind, and acts as a backlight source for the LCD 6.

The shape of the optical fiber 104 behind the LCD 6 is, for example, such that the end face of the optical fiber 104 on the LCD 6 side is widened as shown in FIG. 4A. Such a shape in which the end face is widened can be realized, for example, by packing and spreading a spacer between a bundle of a large number of optical fibers. Then, a lens is arranged at or near the end face of the optical fiber 104 so as to spread the light.

Further, for example, as shown in FIG.
An optical fiber 10 is provided at a portion facing the LCD 6 behind the optical fiber 6.
4 may be widened and a hole 104a may be formed in the side surface. Each hole 104a corresponds to one optical fiber of the bundle of optical fibers 104.

When the end face shown in FIG. 4A is widened, the optical fiber 1 for supplying light to the LCD 6L for the left eye is used.
04 and the optical fiber 104 that supplies light to the LCD 6R for the right eye must be provided separately.
Fiber 10 for supplying light to two LCDs 6L, 6R
4 can be common. At this time, for example, the hole 104a corresponding to the half optical fiber 104 may be opened behind the left-eye LCD 6L, and the hole 104a corresponding to the other half optical fiber 104 may be opened behind the right-eye LCD 6R.

As shown in FIGS. 1 and 3, an electric wire 108 is provided between the power supply box 101 and the display unit 3.
The power supply 108 transmits a control signal, a video signal, and the like.

The power supply box 101 is provided with a connector (not shown) for connecting a signal transmission cable to a computer or a video playback device for supplying a video signal to the glasses-type video display device.

With the above-described configuration, the spectacle-type image display device 100 according to the present embodiment is arranged on the display unit 53 in the conventional spectacle-type image display device 51 shown in FIG. , Backlight 57 and D / A
No noise source such as the converter 61 is provided. Therefore, it is possible to easily design the image display device without worrying about the influence of noise when designing the image display device. Further, since the space for the backlight 57 and the D / A converter 61 is not required, the size and thickness of the display unit 3 can be reduced.

Next, an embodiment of the circuit configuration of the above-described glasses-type image display device 100 will be described. FIG. 5 is a block diagram showing a circuit configuration of the glasses-type image display device 100 according to the present embodiment.

First, the video signal is extracted from the video / audio signal input from the input terminal In by the video processing circuit 105 and processed. Then, in the liquid crystal display panel (LCD) 6 of the display unit 3, the video processing circuit 105
, The images corresponding to the three colors of red R, green G, and blue B are displayed.

The control circuit 106 extracts the horizontal synchronizing signal H and the vertical synchronizing signal V from the input video / audio signal to perform synchronization control, and generates a timing signal (clock) CK required for the display unit 3. And output.

Further, the control circuit 106 controls the display unit 3 so that an image is displayed correctly.
That is, since the display unit 3 displays an image via the mirror 8 as described above, if the image signal is processed as it is and displayed on the display unit 3, the image actually seen by the user is inverted. . Therefore, the display unit 3
By changing the display pixel and operation direction in the normal operation,
Control is performed by the control circuit 106 so that the display is performed in the correct direction.

The power supply circuit 107 operates as a D / A converter, and converts the DC voltage supplied from a battery or the like into an A / D converter.
The light source 103 is converted into a C voltage, and the light source 103 is driven by the AC voltage. The power supply circuit 107 also supplies power to the video processing circuit 105 and the control circuit 106 as shown by a dotted line in the figure.

The optical fiber 104 is connected to the light source 103 as described above, and the light from the light source 103 is applied to the LCD 6 through the optical fiber 104.

FIG. 6 shows an embodiment of the optical system of the glasses-type image display device shown in FIG. As described above, the image displayed on the LCD 6 is reflected by the mirror 8, converged by the aspherical lens 10, further reflected by the half mirror 9, and passed through the eyeglass-shaped lens 14 to the eyes E of the user P. Is made to enter. This gives the distance L
At a distance of, for example, 2 m away, the user feels as if he / she is watching an image 21 displayed on a large 52-inch screen, for example.

In FIG. 6, reference numeral 20 denotes a liquid crystal shutter, which is opened and closed manually or by an electric signal or the like, and can switch between an image outside the glasses-type image display device 100 and an image from the LCD 6. In addition, this liquid crystal shutter 2
0 may adopt a configuration that allows a partially open state such as a half open state.

According to the spectacles type image display apparatus 100 of the present embodiment, the display unit 3, that is, the spectacles unit, the power supply box 101, the D / A converter 102, and the light source 10
Since the power supply unit including the power supply unit 3 and the like is disposed separately, the influence of noise from a noise source such as the power supply box 101 and the D / A converter 102 does not reach the display unit 3.
The design restrictions of the glasses-type image display device 100 are eliminated,
Design can be easily performed. Further, it is not necessary to provide a backlight light source or a component for supplying power to the light source in the eyeglass unit, and the space required for the eyeglass unit is reduced, so that the eyeglass unit can be reduced in size and thickness. In addition, since the weight is reduced, the burden on the user P is reduced and the handling is easy.

The glasses-type image display device of the present invention is not limited to the above-described embodiment, but may take various other configurations without departing from the gist of the present invention.

[0049]

According to the present invention described above, since the spectacle section and the power supply section are separately disposed, it is not necessary to provide a backlight light source or a component for supplying power to the light source in the spectacle section. Since the space required for the eyeglasses is reduced, the size and thickness of the spectacles can be reduced, so that the burden on the user is reduced and the handling is easy.

In addition, since the influence of noise from a noise source such as a backlight power supply does not reach the liquid crystal display panel or the display, restrictions on the design of the spectacle type image display device are eliminated, and the design can be easily performed. Become like

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram (perspective view) of an embodiment of a glasses-type image display device according to the present invention.

FIG. 2 is a side view of a display unit of the glasses-type image display device of FIG.

FIG. 3 is a diagram showing a schematic configuration of a power supply box of the glasses-type image display device of FIG. 1;

FIGS. 4A and 4B are diagrams showing optical fiber shapes of the glasses-type image display device of FIG.

FIG. 5 is a block diagram illustrating a circuit configuration of the glasses-type image display device of FIG. 1;

FIG. 6 is a diagram showing an optical system of the glasses-type image display device of FIG. 1;

FIG. 7 is a schematic configuration diagram (perspective view) of a conventional glasses-type image display device.

8 is a side view of a display unit of the glasses-type image display device of FIG.

[Explanation of symbols]

2 Ring part, 3 display part, 4 pads, 6,
6L, 6R liquid crystal display (LCD), 8 mirror, 9 half mirror, 10 aspherical lens, 11
Earphone, 12 case, 13 eaves, 14 display, 51 glasses-type image display, 52 ring, 53 display, 54 pad, 55 remote control, 56, 56L, 56R Liquid crystal display (LCD), 57 backlight, 58 mirror, 59
Half mirror, 60 aspheric lens, 61 D / A converter, 62 lamp, 63 reflector, 64 case part, 65 eaves part, 66 display, 67 earphone, 68 electric wire, 100 glasses-type image display device, 10
1 power supply box, 102 D / A converter, 103
Light source, 104 optical fiber, 105 video processing circuit,
106 control circuit, 107 power supply circuit (D / A converter), 108 wires, eyes of P users, E users

Claims (3)

[Claims] 1. An eyeglass section comprising a liquid crystal display panel and constituting a display section for displaying an image, a light source for a backlight of the liquid crystal display panel, and a power supply section having a power supply for driving the light source. The glasses-type image display device, wherein the glasses unit and the power supply unit are separately arranged, and the liquid crystal display panel and the light source are connected by an optical fiber. 2. The eyeglass-type image display device according to claim 1, wherein a backlight is constituted by a bundle of the optical fibers, and an end surface of the backlight on a liquid crystal display panel side is widened. 3. A backlight comprising a bundle of the optical fibers, a side of the backlight facing the liquid crystal display panel, the side being widened, and a hole corresponding to the optical fiber provided on the side. The eyeglass-type image display device according to claim 1.