RU174853U1 - DEVICE FOR SPEED REGISTRATION OF IMAGES - Google Patents

Abstract

Usage: in television technology and can be used in high-speed digital video systems for transmitting and processing video signals of fast processes. Substance: device for high-speed image registration, containing an input lens optically coupled to the image of the recorded object, an optical unit for dividing the image into n channels, optical outputs which are associated with the optical inputs of blocks converting images into video signals, each of which contains an electron-optical converter The indexer and the electronic modules for generating control and information signals comprise a projection lens located between the input lens and the image division unit, the device being made with the number of channels n≥8, while the planes of the n-image focused projection lens are aligned with the photocathodes of the electron-optical converters of the conversion units images into video signals, the outputs of which are connected through a fiber-optic communication line with a p-channel interface module with and formation connection with an electronic computer. An optical image division unit contains a dividing prism with n≥8 symmetrically positioned side reflective faces and mirrors optically coupled to the lateral faces of the dividing prism. The technical result is to increase the speed when registering fast processes in the nanosecond region, and to simplify the adjustment and adjustment of the optical system of the device. 1 C.p. f-crystals, 3 ill.

Description

The utility model relates to television technology and can be used in high-speed digital video systems for transmitting and processing video signals of fast processes.

A device for high-speed image registration [1], comprising a housing with load-bearing structural elements, an electronic video processing unit is placed in the housing, connected via a connector to a communication cable, an input lens, the optical input of which is associated with the image of the object being registered, and the output is connected to the channel processing of video information containing an optically coupled focusing lens and an electron-optical converter, as well as a control module, a collimating lens, the input of which is It is optically connected with the output of the input lens, a separation prism, two mirrors, a spacer element, and a second video information processing channel with the corresponding focusing lens, an electron-optical converter, and a control module, while the outputs of the information processing control modules are connected to the inputs of the electronic video processing unit, the separation the prism is mounted on the optical axis of the collimating lens, the reflective faces of the separation prism are optically coupled to the mirrors, mounted at an angle of 45 ° to the longitudinal axis of the device and connected to the optical inputs of the focusing lenses of the video processing channels, the supporting structural elements are made in the form of two base plates mounted orthogonally to the longitudinal axis of the device and mounted on the upper and lower walls of the housing, while the spacer element is fixed between by said support plates, a dividing prism and mirrors are mounted on the first support plate from the collimating lens side, focusing lenses are located between these plates, the electron-optical converters are installed on the rear side of the second base plate.

The closest in technical essence to the proposed utility model is a device for high-speed registration of images [2], containing an electronic video processing unit, an input lens, the optical input of which is connected to the image of the registered object, and the output - to the input of the collimating lens, the output of which is connected through a separation a prism and mirrors with video processing channels, each of which contains a control module, the output of which is connected to the inputs of the electronic processing unit information, and optically coupled a focusing lens and an electron-optical converter, the device being made four-channel, and a dividing prism mounted on the optical axis of the collimating lens made with four symmetrically arranged reflective faces optically coupled to four mirrors mounted at an angle of 45 ° to the longitudinal the device’s axis and the optical inputs of the focusing lenses of the video processing channels.

The dividing prism and mirrors form the optical unit for dividing the image.

Known devices [1,2] have insufficient speed due to the small number of channels for processing video information, which limits the possibilities for video recording of processes occurring in the nanosecond range.

In addition, in known devices, each of the information processing channels contains an additional focusing lens, which complicates the technical implementation, alignment of the optical system and equipment setup.

The technical result, which consists in increasing the speed when registering fast processes in the nanosecond region, as well as in simplifying the alignment and tuning of the optical system of the device, is achieved in the proposed device for high-speed image registration, containing an input lens optically coupled to the image of the recorded object, an optical unit for dividing the image on n channels, the optical outputs of which are connected to the optical inputs of blocks for converting images into video signals, each the second of which contains an electron-optical converter and electronic modules for generating control and information signals, in that it contains a projection lens located between the input lens and the image division unit, the device being made with the number of channels n≥8, while the planes are focused by the projection lens n images are combined with photocathodes of electron-optical converters of blocks for converting images into video signals, the outputs of which are connected through fiber-optic a communication line with a p-channel interface module providing information communication with an electronic computer.

Moreover, in the proposed embodiment, the optical image dividing unit comprises a dividing prism with n≥8 symmetrically arranged side reflective faces and mirrors optically connected to the lateral faces of the dividing prism.

The essence of the utility model is illustrated by drawings, where:

in FIG. 1 shows a functional diagram of a device;

in FIG. 2 shows a block diagram of the conversion of images into video signals;

in FIG. 3 shows the device in assembled form with the protective cover removed and a partial cutout along the axis of the lenses.

The device (Fig. 1) contains an input lens 1, a projection lens 2, an optical unit 3 for dividing the image into n channels, blocks 4 for converting images into video signals, a p-channel fiber-optic communication line 5 and an interface module 6, sequentially located on the same optical axis intended for information communication with a computer 7.

The optical unit 3 for dividing the image (Fig. 1) contains a dividing prism 8 with symmetrically located lateral reflective faces and mirrors 9, optically connected with the side faces of the dividing prism.

In FIG. 1, the dashed line indicates the focus plane 10 of the input lens 1 and the focus plane 11 of the projection lens 2 having an elongated rear focal length.

Each of the blocks 4 for converting images into video signals (Fig. 2) contains an electron-optical converter 12, a high-voltage power supply 13, a microprocessor control controller 14, and a driver 15 of control signals.

The optical outputs of the image dividing unit 3 are connected to the optical inputs of the image to video signal converting units 4.

The device is made with the number of channels n≥8.

The plane 11 of the images focused by the projection lens n is aligned with the photocathodes 15 (Fig. 3) of the electron-optical converters 12. The outputs of the blocks 4 for converting the images into video signals are connected through a fiber-optic communication line 5 with a p-channel interface module 6 providing information communication with electronic computing machine 7.

The device operates as follows.

After turning on the device and launching the control program, the parameters of each channel are set (the duration of the image intensifier shutter, the delay in its operation, the amplification coefficient of the image intensifier tube, etc.).

The image enters the input lens 1 with the focus plane 10 and is transferred through the projection lens to the optical unit 3 for dividing the image, where by means of a prism 8 and mirrors 9 it is separated and fed in the plane 11 to the photocathodes 15 of the electron-optical converters (EOC) 12 with a CCD (not shown in the drawings).

When shooting a fast-moving process, the proposed device implements the method of synchronous high-speed shooting on n≥8 channels, which operate alternately and are switched using programmable microprocessor controllers 14 of blocks 4. While the previous frame of video information is being processed in one channel, another channel may start receive and process the next frame of video information.

The power source 13 provides the necessary energy parameters of the image intensifier 12. The driver 15 of the control signals provides the formation of read signals and gating of the CCD matrix according to a given time diagram. Programmable microprocessor controller 14 provides pulse control of the shutter of the image intensifier tube 12 and control the time parameters of the exposure and its delay relative to the start signal, as well as adjust the gain of the image intensifier 12.

Image intensifier tubes 12 with a nanosecond shutter provide the conversion of the image of a process or an object moving at a high speed (projectile, bullet or other object) with an exposure time of up to 10 ^-8 s.

The volume of the buffer memory of the CCD matrix makes it possible to provide frame-by-frame recording of images of objects with the necessary discreteness and quality.

The recorded image in each channel is focused on the photocathode 13 of the image intensifier 12. At the time of the start of the start pulse (START), after the set delay time, the image intensifier shutter 12 opens for the set time. At the same time, an impulse is formed, which transfers the CCD to the accumulation mode. At the output (SYNCHR) of block 4, a pulse is formed, the front of which prevents 15-20 not the moment the shutter opens.

Each of n blocks 4 registers the frames of the recorded image, which are stored on the CCD chip. Data is transmitted through the communication line 5 and the interface module 6, designed for informational communication via a fiber-optic cable (not shown in the drawings) to a remote computer 7 for processing images of dynamic processes.

With the number of channels n = 8, each of blocks 4 registers two consecutive independent frames with an interval of 2 μs. Thus, with sequential triggering of the channels from the first to the eighth with an interval of 250 ns, the second channel will be triggered again in just 2 μs.

An increase in the number of channels to n = 16 allows us to capture even faster dynamic processes.

The proposed utility model allows you to register fast processes in a shorter time than in the prototype [2], as well as to improve the alignment of the optical system and equipment setup, since, unlike the prototype, focusing lenses are not required in each channel, and the recorded image is transmitted by projection the lens directly to the photocathode of the image intensifier tube in each channel.

The device is a compact portable design with a protective casing (not shown in Fig. 3).

Optical units (lenses 1, 2, prism 8, mirrors 9) are standard and are manufactured at the enterprises of the optical industry.

Electron-optical converters 12 are matrix solid-state photosensitive devices, which are manufactured at electronic enterprises. Electronic components and elements of the device for high-speed image registration are implemented on the elements of digital computer technology, which are in serial production.

The device has passed industrial tests, can be repeatedly reproduced and meets the criterion of "industrial applicability".

Information sources:

1. RF patent for utility model No. 63153, M. Cl. H04N, 5/235, published. 05/10/2007.

2. RF patent for utility model No. 81613, M. Cl. H04N, 5/235, published. March 20, 2009

Claims (2)

1. Device for high-speed registration of images, containing an input lens optically coupled to the image of the object being registered, an optical unit for dividing the image into n channels, the optical outputs of which are connected to the optical inputs of the blocks for converting images into video signals, each of which contains an electron-optical converter and electronic modules for generating control and information signals, characterized in that it contains a projection lens located between the input lens an image dividing unit, and the device is made with the number of channels n≥8, while the planes of the n-image focused by the projection lens are aligned with the photocathodes of the electron-optical converters of the blocks for converting images into video signals, the outputs of which are connected through a fiber-optic communication line with a p-channel interface module providing information communication with an electronic computer. 2. The device according to claim 1, characterized in that the optical image dividing unit comprises a dividing prism with n≥8 symmetrically located side reflective faces and mirrors optically coupled to the side faces of the dividing prism.

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