SU1569786A1 - Method of transmission of two-dimensional image - Google Patents

Abstract

The invention relates to methods for transmitting a two-dimensional image using fiber optics. The purpose of the invention is to increase the range and provide spatial coding of the image while increasing the information content. The image transformation is performed using an irregular fiber-optic light guide 9, the number of light guide veins which is equal to the number of receiving elements of the matrix 10, the interrogation of which corresponds to the location of the light guide wires at the input end 7 of the light guide 9.

Description

The invention relates to methods for transmitting a two-dimensional image over a flexible fiber optic tape and can be used in information systems.

The aim of the invention is to increase the range and provide a simple coding of the image while at the same time increasing information.

The drawing shows a device that implements the proposed method.

The device that implements the proposed method consists of a telescopic system, dispersing elements in the form of diffraction gratings 2 and 3, objectives 4, 5 and 6, in the focal plane of which (fj, f7 and $) are the input 7 and output 8 the light guide 9. The matrix 10 is electrically connected to the electronic processing unit 11 and the video kg by the control device 12.

The device works as follows.

The light from each point of the line, passing through the telescopic system, is converted into a parallel beam and decomposed by diffraction grating 2 into spectral components, which are converted by the lens & into a set of monochromatic waves forming in the focal plane of lens 4 a set of monochromatic images of the row of the input end 7. The input end of 7 irregular light guide .9 is aligned with the focal plane of lens 4, so that the number of rows is equal to the number of fibers n in the light guide 9, with each aperture J-ro fibers, where 1 jn is the sequence number of the fiber at the input end of the irregular light guide 9, monochromatic images of all points of the j-th row are cut out and, thus, the lines of the image of the scene are transferred mono fibers by compacting the angle and wavelength.

In accordance with the proposed method, from each i-th point of the line (l D k) only a certain set of monochromatic waves in the spectral range / PL of the fiber incident on the input torus at angles b1 and each wavelength L. are transmitted over the monofilament. from the interval uh rigidly matches your angle

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incidence (H}. The width of the spectral interval LL is determined by the input aperture of the fiber 9. As a result of transmission through the fiber 9, monochromatic waves at the input of the fiber-optic cores are transformed into hollow monochromatic cones emanating from the fibers at the same angles of € M. Thus, when a string is transmitted, the geometrical coordinate of the 1st point of the row is encoded with a set of parameters AJ and 9J, and the intensity of monochromatic radiation at the fiber output is proportional to the brightness of the encoded point.

To reconstruct the scene image encoded with the light guide 9, a dispersion system is used comprising a collimation lens 5, a diffraction grating 3 and a lens 6. The output end 8 of the irregular light guide 9 is located in the focal plane of the lens 5. The cones of monochromatic radiation are directed by the lens 5 to the diffraction grating 3 .

Under the condition that for diffraction gratings 2 and 3, the angles between the grating normal and the optical axes of the respective lenses 1 and 5 are the same, the light reflected from the diffraction grating 3 is projected by lens 6 onto the array of 10 photodetectors with a CCD structure, so that its rows are parallel to the plane of dispersion of the diffraction grating and are uniquely optically conjugated (according to the laws of geometric optics) with each of the output light end 8 of the irregular light guide 9. Thus, the coordinates of the image elements a system input uniquely correspond to coordinates in the output plane IIZS matrix.

Thus, each row of the transmitted optical image corresponds to a specific row. And photosensitive elements of the matrix. To obtain an image on the video monitor device 12, the electronic processing unit 11 performs a frame scan, and the switching sequence of the video signals of the array lines corresponds to the order of the optical fibers on the input end of the light guide 5.

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Thus, using the proposed device, the problem of transmitting an optical image over a fiber-optic tape with irregular stacking of fibers 9 is solved.

Claims (1)

Invention Formula A method of transmitting a two-dimensional image, including image transformation using input and output optical systems with dispersing elements, image transmission by fiber-optic tape and recording a transformed image 697866 by interrogating the matrix photodetector element and then reproducing it on a video monitoring device, characterized in that, in order to increase the range and provide spatial coding of the image while simultaneously raising the information content, the image is transmitted through a light guide with irregular; the fiber is stacked, and the matrix polling corresponds to the location of the fiber optic cores on the input end of an irregular fiber-optic fiber. ten 15