SU1429168A1 - Device for registering optical information - Google Patents

Abstract

This invention relates to the registration of optical information. The aim of the invention is to increase the speed and reliability of devices for recording optical information. The device contains a photosensitive electro-optical information carrier, a charging unit made in the form of two corona filaments, a curtain photo shutter, and an exposure time control unit. The first and second movement blocks, mechanically connected with the corona threads placed on the photo shutter, are a high voltage source connected to the charging unit. 1 il. with s

Description

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The invention relates to the field of recording and processing optical information.

The aim of the invention is to improve the speed and reliability of the device for recording optical information,

The drawing shows a diagram of the proposed device.

The device contains a photosensitive electro-optical information carrier 1 fixed in a holder 2, a photo shutter 3 with a slit 4, corona threads 5 mounted on the curtain shutter using a frame 6 symmetrically with respect to the electro-optical information carrier 1 and mechanically connected with blocks 7 and. 8 moves relative to the planes of the carrier 1 while maintaining symmetry, the unit 9 for adjusting the exposure time and the source 10 of a high voltage for supplying voltage to the corona filaments.

The device works as follows.

Using block 9, the required exposure time is set to 40.01-1 s). The auto corona yarns 5 are brought to the position (relative to slot 4 and carrier 1) corresponding to the given exposure time to obtain an optimal electrostatic image with the help of movement units 7 and 8. The shutter 3 is cocked. A high voltage of 10–16 kV is applied to the corona filaments 5 from the source 10. The shutter is released. When moving the shutter slit along the plane of the photosensitive electro-optical information carrier, it is simultaneously exposed and uniformly charged in the field of the corona discharge, which develops between the moving corona filaments. Due to the photoconductivity in the illuminated areas of the carrier 1, photogeneration of charge carriers occurs and their separation by the field created by the charges deposited on the surface of the structure during the charging process.

Thus, in the carrier 1, an inhomogeneous electric field created by the charges, which appeared in the structure as a result of its exposure to an image of the recorded

an object that forms the distribution of the refractive index inside the carrier 1, according to the intensity of the radiation of the object.

Uniform movement of the corona electrodes along the working planes of the photosensitive electro-optical structure ensures uniform distribution of the electrostatic charge over its entire surface.

Claims (1)

Invention Formula A device for recording optical information containing an electro-optical information carrier, a source of high voltage, the output of which is connected to a charging unit made as the first and a second corona filament electrostatically connected with an electro-optical information carrier, a curtain photo shutter, optically coupled to an electro-optical information carrier, an exposure time control unit, the first output of which is connected to a control input of the curtain photo shutter, characterized in that, in order to increase speed and reliability devices, the first and second movement blocks, mechanically connected to the first and second corona threads, respectively, are introduced into it, the outputs of the first and second blocks relocation connected to the second and third outputs of the exposure time control unit, respectively; the corona threads are fixed on the curtain photo shutter.