JP2525740B2 - Image capture device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an image capturing device for capturing an image displayed on a screen of a liquid crystal display.

[Conventional technology]

2. Description of the Related Art Conventionally, there has been a demand for recording an image displayed on a screen of a display device on a film in order to explain a slide by projecting it and storing it as a record at a conference or the like. Therefore, as described in Japanese Utility Model Laid-Open No. 61-198942, that is, in FIG. 3, the display device 100 and the disc 101 provided with the three primary color filters are connected to the control unit 102.
A CRT image capturing device has been proposed which is configured to be controlled by and captured by the camera 103 the image of the display device 100.

[Problems to be solved]

However, in the CRT image capturing device having such a configuration, a fixed-length shooting optical path is required from the screen of the display device to the camera via the disc that constitutes the optical system. For example, a close-up lens is attached. However, since it requires an optical path of about 50 cm, the device is heavy and large in size, and also expensive in price.

In view of the above-mentioned conventional drawbacks, the present invention has an object to provide a compact and inexpensive image capturing apparatus.

[Means for solving problems]

That is, the image capturing apparatus of the present invention includes an illumination unit that supplies a backlight to a liquid crystal display that displays various images on a display screen, and a control unit that controls the illumination unit.
A film disposed close to the display screen of the liquid crystal display, and the control unit controls the illumination time of the backlight according to the characteristics of the film to capture the image.

[Action]

In the image photographing apparatus of the present invention, the illumination time of the backlight supplied from the illumination means on the screen rear side of the liquid crystal display is controlled by the control means, and the film is provided near the screen without the taking lens on the screen. It is designed to imprint the displayed image.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an image photographing apparatus according to the present invention. This image photographing apparatus is a color liquid crystal display 1
The backlight box 2 on the back side of the color liquid crystal display 1 has an illumination unit 3 and an illumination control unit 4, and the film box 5 on the front side of the color liquid crystal display unit 1 has an instant film 6 and a replacement unit 7. It is composed.

The color liquid crystal display 1 has an input side connected to the output side of the personal computer for displaying image information input to the personal computer, and has a front surface provided by a back light supplied from an illuminating means 2 described below on the back side. The previous image information is displayed on the side display screen 8. As shown in FIG. 2, the color liquid crystal display 1 of this embodiment drives scanning electrodes and image electrodes (both not shown) provided corresponding to each pixel (not shown) on the display screen 8, respectively. The scanning driver circuit 9 and the video driver circuit 10 for performing the above operation, and the control unit 11 for controlling these driver circuits 9 and 10 for switching and displaying a plurality of types of images are provided. The color liquid crystal display is not limited to the one for displaying the input information of the personal computer as in this embodiment, and may be connected to a VTR or the like.

In this embodiment, the backlight box 2 is detachably attached to the casing back surface of the color liquid crystal display 1.

The illuminating means 3 uses a three-wavelength fluorescent substance, that is, a cold cathode fluorescent lamp 3a in this embodiment, which is adapted to the spectral characteristics of the color filters of the three primary colors provided in the color liquid crystal display 1 for supplying the backlight. A diffusing plate 3b is attached near the cold cathode fluorescent lamp 3a in order to supply a backlight to the color liquid crystal display 1 side with uniform illuminance.

The illumination control means 4 is for controlling the illumination time of the backlight to an optimum state according to the characteristics of the film 6 and the characteristics of the cold cathode fluorescent lamp 3a, and includes a light source drive circuit 12, a time setting circuit 13, It is composed of a power source V and an operation switch S. The light source drive circuit 12 is a circuit for supplying a high AC voltage to the fluorescent lamp 3a to turn on the fluorescent lamp 3a, and is composed of a transformer, an oscillation circuit, and the like. The time setting circuit 13 is for setting the lighting time of the fluorescent lamp 3a to a constant value in order to set the exposure amount to an optimum value, and is composed of a one-shot multivibrator or the like.

The film box 5 is removably attached to the front surface side of the color liquid crystal display 1 so that the opening 5a is brought into close contact with and fitted to the display screen 8 side of the color liquid crystal display 1. Also, this film box 5
In this case, outlets 5b and 5c are formed to take out only the first light-shielding paper and the instant film 6 which will be described later.

The instant film 6 has a developing solution on the front end side and a light-shielding paper attached on the liquid crystal display surface side on the lower surface side, and directly approaches the display screen of the color liquid crystal display 1 without interposing a photographing lens. In this embodiment, contact printing is performed. In this embodiment, the replacement means 7 is operated by manual operation so that a plurality of sheet-shaped sheets are stacked one by one on the display screen 8 side. It is designed to be sent out and take an image. Incidentally, these instant films 6 can be taken out of the next film 6 by using a lead paper connecting the films 6 to each other. Further, the image capturing apparatus of the present invention is not particularly limited to this instant film, and may be a normal film.

The replacement means 7 is for sending out the instant films 6 one by one to the display screen 8 side and photographing the image displayed on the display screen 8, and is only for the first light-shielding paper and a plurality of sheets. Film chamber 7a accommodating the film-shaped instant film 6 and a developing roller 7b for spreading the developing solution on the leading end side of the film 6 over the entire film surface when the instant film 6 is pulled out from the film chamber 7a.
And have.

Therefore, according to the image capturing apparatus of this embodiment, when the image is hard-copied from the screen of the color liquid crystal display 1 which displays a plurality of types of image information input to the microcomputer, each image is displayed on the display screen 8. Display information.

Next, pull out the lead paper from the outlet 5b,
The first instant film 6 is sent to the display screen 8 side and set on the display screen 8 side, and the operation switch S is pressed. Then, the fluorescent lamp 3a is operated for a predetermined lighting time.
Lights up, an image is displayed on the display screen 8 and the instant film 6 is exposed, and the image is closely printed on the instant film 6.

In this way, the baked film 6 is stuck on the film surface if the developing solution is spread on the film surface by the developing roller 7b when the developing paper 7 is taken out from the take-out port 5c using the lead paper. Peel off the shading paper to complete.

Thereafter, each image displayed on the display screen 8 can be sequentially shot on the instant film 6 by the same operation.

[Effect] As described above, according to the image capturing apparatus of the present invention, the backlight is illuminated by the control unit from the illumination unit on the back side of the liquid crystal display for an appropriate time to form an image on the screen, The film set close to the formed image is directly contact-printed without the intermediary of the taking lens, and the taking lens and its image forming distance are not required, and the device is lightweight and compact. In addition, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an image photographing device according to the present invention, and FIG. 2 is a block diagram showing configurations of a liquid crystal display side and an illumination means side of the image photographing device according to the present invention.
FIG. 1 is a block diagram showing a conventional CRT imaging device. 1 ... Liquid crystal display, 3 ... Lighting means, 4 ... Lighting control means, 6 ... (Instant) film.

Claims (1)

(57) [Claims] 1. A lighting unit for supplying a backlight to a liquid crystal display for displaying various images on a display screen, a control unit for controlling the lighting unit, and a film arranged close to the display screen of the liquid crystal display. An image capturing apparatus comprising: a control unit that controls the illumination time of a backlight according to the characteristics of the film to capture the image.