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Detection device for surface-shape errors of solar trench type curved surface reflector

A surface error and detection device technology, applied in measurement devices, optical devices, instruments, etc., can solve the problems of cumbersome and time-consuming detection process, complex image processing, not suitable for fast, online detection, etc. Simple, low-cost image processing

Inactive Publication Date: 2012-07-11
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a solar trough in order to solve the problem that the detection process is cumbersome and time-consuming in the detection of the surface shape error of the trough-type curved surface mirror, and it is not suitable for fast and on-line detection. At the same time, there is the problem of complicated subsequent image processing. Type error detection device for curved surface mirror

Method used

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  • Detection device for surface-shape errors of solar trench type curved surface reflector
  • Detection device for surface-shape errors of solar trench type curved surface reflector
  • Detection device for surface-shape errors of solar trench type curved surface reflector

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specific Embodiment approach 1

[0011] Specific implementation mode 1. Combination figure 1 In this embodiment, the device for detecting the surface error of the solar trough curved reflector includes a light source device, a self-calibration device, and an image acquisition and processing device.

[0012] Described light source device comprises laser 1, beam expander mirror 2 and beam splitting mirror group 3; Described beam splitting mirror group 3 is made up of a series of beam splitting mirror units 6, and each beam splitting mirror unit 6 is made up of two pieces Beam mirror composition (tilt beam splitter 4 and horizontal beam splitter 5), the angle between the two beam splitters is 45°.

[0013] The beam expander 2 expands and collimates the laser beam emitted by the laser 1, divides it into a series of test beams 8 with approximately equal energy and parallel to each other through the beam splitter group 3, and projects them onto the curved mirror 13 under test. The position and inclination of each ...

specific Embodiment approach 2

[0018] Specific embodiment two, combine figure 2 This embodiment is described. The difference between this embodiment and the first embodiment is that this embodiment adds a shutter 23 to each beam splitter unit 6 on the basis of the first embodiment. 13 surface error is tested, it is necessary to add a shutter 23 in each beam splitter unit. When the surface error detection is performed on the measured curved surface mirror 13, when the light spot projected on the light screen deviates from the ideal position, it can be Close all the shutters 23, and open the shutters 23 in turn from left to right, then the measured point corresponding to the deviated spot can be found, and the normal direction of the measured point can be obtained from the deviation of the light spot and the coordinate information of the measured point The deviation from the ideal normal direction.

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Abstract

The invention provides a detection device for surface-shape errors of a solar trench type curved surface reflector, relating to the field of mirror surface detection, which solves the problems that the when the surface-shape errors of the trench type curved surface reflector are detected by the conventional detection device, the detection process is complicated and time-consuming and is not suitable for rapid and online detection, and the subsequent image processing is complicated. The device comprises a light source device, a self-calibration device and an image acquisition and processing device, wherein the light source device comprises a laser, a beam expander and a beam splitter group; light beams emitted from the laser are expanded by the beam expander, are split by the beam splitter group and are reflected; a test light beam split by the beam splitter group is projected on the curved surface reflector to be detected; a self-calibration light beam reflected by the beam splitter group is transmitted into the self-calibration device; the self-calibration device is used for calibrating the parallel degree of the test light beam projected to the curved surface reflector to be detected; and the image acquisition and processing device is used receiving light spot information reflected by the curved surface reflector to be detected and determining the surface-shape errors of the curved surface reflector to be detected. The detection device is easy to operate and has low cost.

Description

technical field [0001] The invention relates to the field of mirror surface detection, in particular to a surface shape error detection device for a solar trough type curved surface reflector. Background technique [0002] In the field of solar energy utilization, in order to increase the flux density of solar radiation, solar concentrators are required. The trough concentrator is a widely used concentrating method in the field of solar energy utilization. It has been commercialized in some countries (such as Germany and Spain), but it is still in its infancy in my country. The trough concentrator is composed of multiple curved mirrors. The surface shape accuracy of the curved mirror determines the light concentrating performance of the trough concentrator, so it is very important to detect the surface error of the curved mirror. In order to realize batch and standardized production of trough-type curved surface reflectors, it is necessary to provide a detection method and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
Inventor 魏秀东肖君卢振武任兰旭
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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