SU1229812A1 - Device for registering electric signals on tape optical medium - Google Patents

Abstract

The invention relates to a technique for accumulating information, in particular, devices for recording information by optical means, and can be used in computer technology in organizing data banks. The aim of the invention is to increase the signal acquisition density. The device contains a rectangular information matrix (IM) 1 of the N-M light-emitting elements in the column and row, respectively. The image of the modulated light-emitting elements is transferred by the optical transforming system (OTS) 2 into the plane of the moving optical tape media 3 information in the form of N M lines with a width d. The reversal of IM 1 and OTS 2 at a certain angle a relative to the direction of movement of the tape carrier 3 contributes to a tighter placement of information lines without their intersections and overlaps. IM 1 can be made of optically coupled information transparency with controllable transparency and an illuminator containing a coherent radiation source, a collimating system and a lenticular raster, and OTS 2 can contain two lenticular rasters and a polarizer placed between them. 1 hp f-ly, 1 ill. yu ND CO CX) yu

Description

The invention relates to a technique for accumulating information, in particular, devices for recording information by optical means, and can be used in computer technology in organizing data banks.

 The aim of the invention is to increase the signal acquisition density.

The drawing shows a diagram of the device.

The device contains an information matrix 1 of light-emitting elements, an optical transforming system 2 and a carrier 3 of information transported by a moving mechanism (not shown).

The device works as follows.

The electrical signals to be recorded are modulated by the light-emitting elements of the information matrix 1, which can be semiconductor lasers, light-emitting diodes, and other emitters having small dimensions. The image of the radiating elements of the information matrix is transferred by the optical transforming system 2 in the plane of the optical tape (e.g. photosensitive) information carrier 3, which is transported by a moving mechanism (not shown). Optical transforming system 2 can be made in the form of a lens, fiberglass plate, microlens array, while in the case of using a microlens array, their number and arrangement correspond to the number and arrangement of the light-emitting elements of the information matrix 1. When the rectangular array of NM light-emitting elements in the column is rotated and the line, respectively, and together with it the optical transforming system - the matrix of microlenses, relative to the direction of movement of the optical tape L information through an angle a, defined by the relationship:

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where d is the diameter of the image of the light-emitting element of the information matrix in the plane of the optical tape information carrier; DI is the step between the images of the light-emitting elements in the column of the information matrix in the plane of the optical tape information carrier,

step between images of light-emitting elements in the row of the information matrix in the plane of the optical tape media Oz N-d.

On a moving optical storage medium, N-M lines with a width d will be detected, i.e. Each light-emitting element of the information matrix 1 registers its information line on the carrier, in accordance with the electrical signals to be recorded. The turn of the information matrix at a certain angle a allows the information lines to be placed more tightly on the information carrier without their intersections and overlaps, which increases the density of signal recording at a sufficiently high signal-to-noise ratio. The same effect is achieved by reversing the optical tape information carrier relative to the information matrix.

The information matrix of light-emitting elements can be made of an illuminator consisting of a coherent radiation source, a collimating system and a lenticular raster, as well as a transparency with a controlled transparency, and the optical transforming system from the first and second lenticular rasters with a polarizer between them, and the focal lengths the distance of the lenses of the second raster is smaller than that of the first. With this device (not shown), the lens raster of the illuminator, transparency with controllable transparency, as well as the first and second lens rasters are deployed at an angle ot.

Claims (2)

1. A device for recording electrical signals on a tape optical information carrier, comprising optically coupled information matrix of light-emitting elements, an optical transforming system, and a mechanism for moving a tape optical information carrier, characterized in that, in order to increase the recording density of signals, the information matrix is rectangular from NM light-emitting elements in the column and row, respectively, while the optical transforming system and the information matrix deployed belt relative to the direction of movement of the optical information carrier by an angle a, defined by the relationship: , where d is the diameter of the image of the light-emitting element of the information matrix in the plane of the tape information carrier; DI is the step between the images of the light-emitting elements in the column of the information matrix in the plane tape optical media, and the step between the images of light-emitting elements in the information line 1229812d matrix in the plane of the optical tape source of radiation, the collimatic information carrier — D2 N – d, the dosing system and the lenticular raster, and 2. The device according to claim 1, characterized by an optical transforming system, that the information matrix is light-filled from successively installed radiating elements filled with an optical first lens raster, polarizer and ki connected and sequentially installed — the second lens raster; This focal illuminator and informational trans-spacings of the lenses of the second lens wound with controlled transparency, the illumination of the raster less than the focal lengths of the lens is made of optically coupled co-first lens raster.