SU481943A1 - Electro-optical addressing device - Google Patents

Description

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The invention relates to the field of optoelectronics and can be used in automation and computer technology.

A device for deflecting a beam of light by an address code is known, comprising

electrochemical switches and birefringent crystals.

However, at a considerable density of positions occupied by the light beam, crosstalk is observed at the output. In addition, it is impossible to obtain an output spot of a certain shape and size; With the help of a single block, it is impossible to pound a two-coordinate raster at the output

The purpose of the invention is to simplify the device and increase its reliability in operation.

This is achieved by the joint use of electro-optical polarization switches and sets of polarization analyzers.

FIG. 1 schematically depicts an addressing device for three input signals, where the dot and the cross denote orthogonally located analyzers

polarization devices, and the symbols O and @ are the state of the plane, polarization of the rays

light during the passage of the address device; in fig. 2 the same state corresponding to control code X 1,

. .

The proposed device contains electro-optical polarization polarization 1 and kits AND analyzers 3 1 of the polarization. The clips 4 are electrically connected & to the electro-optical switches 1 and are the address inputs of the device,

The spectrooptical nepeKjno4aTejm polarizations 1 are made in the form of, for example, plates 2 — a cut from potassium dihydrogenphosphate I placed between the plates of a capacitor.

The sets of 2 polarization analyzers are formed along one coordinate, so a linear raster is obtained at the input. To obtain a matrix structure at the output of the raster, the sets of polarization analyzers are formed in two coordinates. The device operates as follows: The first electro-optical switch 1 is excited and the polarization plane of the incident polarized radiation is rotated. The radiation passes through analyzers 3 (see Fig. 2, indicated by a cross). In the second switch 1, which is also excited, the polarization of the light beam changes again. The third electro optical switch 1 does not apply a control voltage (X 0) to it does not change the polarization of the light wave I. Thus, the light appears in only one output position. When using all possible combinations of address points, the light beam 1 send to any of the output 1 device positions. Electro-optical addressable devices for a larger number of input signals are constructed similarly. The subject of the invention. An electro-optical addressing device containing electro-optical perceptors for radiation polarization, is about that, in order to simplify the device and increase its reliability in operation, it contains sets of polarization analyzers, and electrically polarization switches and The arrangements are arranged sequentially through one along the direction of radiation propagation. 12

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