SU1622867A1 - Device for deflection of optical radiation - Google Patents

Abstract

The invention relates to optical waveguides, such as an optical integrated circuit, can be used in optoelectronic systems for recording, reading and processing information for deflecting or scanning optical radiation. The purpose of the invention is to increase the resolution by eliminating the unevenness of the linear scanning rate of optical radiation. In the device, a plenary waveguide is made on the lateral surface of a cylinder mounted rotatably around an axis by a rotation mechanism, and the diffraction input grating is located on the lateral surface of the cylinder on one side and in the form of a cylinder, in addition, diffraction gratings are made on the lateral surface of the cylinder. radiation, located at an acute angle to the generator of the lateral surface of the cylinder and parallel to each other by its lateral boundaries, while the strokes of diffraction gratings ntirovany same manner with respect to the generatrix of the side surface of the cylinder. 1 il. "(L S

Description

The invention relates to optical waveguides, such as an optical integrated circuit, and can be used in optoelectronic recording, reading, and information processing systems for deflecting or scanning optical radiation.

The purpose of the invention is to increase the resolution by eliminating the non-uniformity of the linear scanning speed of optical radiation.

In the drawing, a device for deflecting optical radiation is given.

The device for rejecting optical radiation contains an optically interconnected laser radiation source 1, a radiation forming lens 2, a diffraction grating 3 for inputting radiation into a planar waveguide 4, made on the side surface of the cylinder, with a rotation mechanism 5, diffraction grating 6 for radiation output located at an acute angle to the generatrix on the lateral surface of the cylinder, parallel to the axis of rotation, and parallel to each other on the cylindrical surface of the planar waveguide 4. Diffraction gratings and 6 radiation outputs are optically coupled through a lens to the recording medium 8. A K-8 optical glass cylinder was used as the Planar Wave 4 Material. Planar waveguide 4 is made by the pub method on the side surface of the cylinder. Diffraction gratings 3 and 6 are made by a topographic method. A semiconductor or gas laser is used as the source of laser radiation 1.

A device for rejecting optical radiation operates as follows.

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Optical radiation source 1

through the radiation-forming lens 2 and the diffraction grating 3 is introduced into the planar waveguide 4 parallel to the axis of rotation. As it propagates, the optical radiation diffracts from one of the diffraction gratings 6 of the radiation output and through the cut lens 7 is outputted and directed to the recording medium 8. When the cylindrical planar waveguide 4 rotates, the optical radiation output zone from the plasma waveguide moves cylindrical planar - olfactor 4, and thus

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the deflection (scanning) of the output optical beam is carried out.

A device for rejecting optical radiation eliminates the unevenness of the linear scanning speed of optical radiation at a constant angular velocity of rotation of the planar waveguide 4, since the optical radiation output area is equidistant from the axis of rotation of the cylindrical planar waveguide, thereby increasing the resolution of the device.

Form, l and inventions

An optical radiation deflection apparatus comprising a laser radiation source optically coupled to an objective lens, a radiation input diffraction grating and a plenary waveguide mounted rotatably around an axis by a rotation mechanism, characterized in that, in order to increase the resolution, a planar waveguide is provided on a lateral surface of a cylinder, on one side of which a diffraction grating of radiation input is arranged in the form of a cylinder, the strokes of which are oriented perpendicular to the generator th lateral, . a cylinder surface parallel to the axis of rotation, with diffraction gratings made on the side surface of the cylinder, located at an acute angle to the side surface of the cylinder and parallel to one another with their lateral borders, the strokes of diffraction gratings emitting radiation in the same way cylinder surface.

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Claims (1)

The device for deflecting optical radiation eliminates the unevenness of the linear scanning speed of optical radiation at a constant angular velocity of rotation of the planar waveguide 4, since the output zone of the optical radiation is equidistant from the axis of rotation of the cylindrical planar waveguide, thereby increasing the resolution of the device. Claim A device for deflecting optical radiation, comprising a laser radiation source optically coupled to a lens, a radiation input diffraction grating and a planar waveguide mounted to rotate around an axis by a rotation mechanism, characterized in that, in order to increase the resolution, the planar waveguide is made on the side surface cylinder, on one side of which in the form of a cylinder is located a diffraction grating of radiation input, whose strokes are oriented perpendicular to the generatrix kovoy po- ... the cylinder surface parallel to the axis of rotation, while on the side surface of the cylinder there are made radiation output diffraction gratings located at an acute angle to the generatrix of the cylinder’s lateral surface and parallel to one another with their lateral boundaries, and the strokes of the radiation output diffraction gratings are oriented in the same way with respect to the side generatrix cylinder surface.