JPS63218931A - Picture photographing device - Google Patents

Abstract

PURPOSE:To make provision of an optical lens system unnecessary to miniaturize a picture photographing device, and to reduce its cost, by constituting the device allowing a liquid crystal display to adhere closely to a photographic film. CONSTITUTION:A liquid crystal display 5 is installed so as to adhere closely to a photographic film 7, and a backlight 6 is fixed to the reverse side of the liquid crystal display 5. The backlight 6 emits a light beam, when a shutter switch 8 is depressed and a light emitting signal 9 is generated, the film 7 is sensitized by that which has transmitted through the liquid crystal display 5, among the light beams emitted by the backlight 6, and an image displayed by the liquid crystal display 5 is projected. Since a cathode-ray tube and an optical lens system are not used, the titled device can be miniaturized and its cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a photographic device, and more particularly to a photographic device capable of inputting a video signal and photographing an image contained in the signal.

[Conventional technology]

Conventionally, this type of photographic device that captures the image contained in the input video signal displays the input video signal on a cathode ray tube and uses an optical lens system to display the displayed image. The method involved exposing photographic film to light through a wafer.

[Problem that the invention seeks to solve]

The above-mentioned conventional photographic device uses a cathode ray tube and an optical lens system, so it has the disadvantage that it is difficult to reduce the size and price of the device.

[Differences between the invention and the prior art]

In contrast to the conventional photographic apparatus described above, the present invention has an original content in that it does not require an optical lens system, except for the structure in which the liquid crystal display and the photographic film are brought into close contact with each other.

[Means for solving problems]

The photographic device of the present invention includes a liquid crystal display disposed in close contact with a photographic film, and a backlight that irradiates the liquid crystal display with light.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of a first embodiment of the present invention.

Embodiment 1 is a video signal input type photographing device.

Video signal input terminal 1 accepts external video signals and RGB
This is a terminal for inputting a video signal 2 such as a signal. electronic circuit 3
generates a drive signal 4 for driving a liquid crystal display 5 from an input video signal 2. The liquid crystal display 5 displays images based on the drive signal 4 generated by the electronic circuit 3. Further, the liquid crystal display 5 is placed in close contact with the photographic film 7. The backlight 6 is fixed to the back side of the liquid crystal display 5 and emits light by a light emission signal 9 connected to the backlight 6.

The light emission signal 9 is a pulse signal output when the shutter switch 8 is pressed.

Next, the operation of the first embodiment will be explained.

A video signal 2 input from the outside through a video signal input terminal 1 is input to an electronic circuit 3. This electronic circuit 3 generates a drive signal 4 for driving a liquid crystal display 5 from an input video signal 2. At this time, the liquid crystal display 5 is already displaying an image, but since the liquid crystal display 5 itself does not emit light, the film 7 cannot be exposed to light, and it is only when the backlight 6 emits light that the film 7 is exposed. can be done. The backlight 6 emits light when the shutter switch 8 is pressed and a light emission signal 9 is generated. The film 7 is exposed to light K transmitted through the liquid crystal display 5 out of the light emitted by the backlight 6, and the image displayed on the liquid crystal display 5 is photographed.

[Example 2] FIG. 2 is a block diagram of a second embodiment of the present invention.

Embodiment 2 is a video signal input type photographing device of an adapter type that is incorporated into a general camera in place of the back cover.

Video signal input terminal 1 accepts external video signals, R, G
This is a terminal for inputting the B-times video signal 2. The electronic circuit 3 generates a drive signal 4 for driving the liquid crystal display 5 from the input video signal 2. The liquid crystal display 5 displays images based on the drive signal 4 generated by the electronic circuit 3. Further, the liquid crystal display 5 is installed so as to be in close contact with the photographic film 7 set in the camera 10. The backlight 6 is fixed to the back side of the liquid crystal display 5 and emits light by a light emission signal 9 connected to the backlight 6. The light emission signal 9 is the camera 1
This is a pulse signal that is output when the shutter switch 8 above 0 is pressed.

Next, the operation of the second embodiment will be explained.

A video signal 2 input from the outside through a video signal input terminal 1 is input to an electronic circuit 3. This electronic circuit 3 generates a drive signal 4 for driving a liquid crystal display 5 from an input video signal 2. At this time, the liquid crystal display 5 is already displaying an image, but since the liquid crystal display 5 itself does not emit light, the film 7 cannot be exposed to light, and the film 7 cannot be exposed to light until the backlight 6 emits light. Can be done. The backlight 6 emits light when the shutter switch 8 is pressed and a light emission signal 9 is generated. The film 7 is exposed to light emitted by the backlight 6 that passes through the liquid crystal display 5, and the image displayed on the liquid crystal display 5 is photographed.

In this second embodiment, since it is configured as an adapter for a conventional camera, the control of the photographic film 7 and the mechanism of the shutter switch 8 can be left to the camera 10.
It has the advantage of being cheaper than.

〔Effect of the invention〕

As explained above, the present invention uses a liquid crystal display, which can be made smaller than a plow/tube, for displaying images in a photographic device that takes a photograph of an image contained in an input video signal, and furthermore, the liquid crystal display is attached closely to the photographic film. The advantage of this structure is that it eliminates the need for an optical lens system, making it possible to reduce the size and cost of the photographic device.

[Brief Description of the Drawings] Fig. 1 is a block diagram of Embodiment 1 of the present invention, Fig. 2 is a block diagram of Embodiment 2 of the present invention, and Fig. 3 is a block diagram of a conventional video signal input type photographing device. It is a diagram. 1...Video signal input terminal, 2...Video signal, 3...Electronic circuit, 4...Drive signal, 5...Liquid crystal Display, 6...
... Backlight, 7... Photographic film, 8.
...Shutter switch, 9...Light emission signal, 10...Camera, ]1...Video signal, 12...Electronic circuit, 13. ...Cathode-ray tube drive signal, ]4 ...Cathode-ray tube, 15
...Optical lens system, 16...Photographic film. Figure 1

Claims (1)

[Claims] A photographing device that has a liquid crystal display installed in close contact with a photographic film surface and a backlight for irradiating light onto the liquid crystal display, and that photographs an image displayed on the liquid crystal display.