A Large-area Parallel Discrete Beam Emitting Device

Abstract

The invention discloses a large-area parallel scattered light beam emitting device which comprises a rack, a cross curve optical laser, a rotating shaft, a motor, two conducing rings, a Fresnel lens and a grid plate, wherein the Fresnel lens and a support cylinder are fixedly mounted at one end of the rack; the grid plate is arranged at the front end of the support cylinder; the rotating shaft is arranged inside the inner hole of the other end of the rack; the central line of the rotating shaft and a focal axis of the Fresnel lens are colinear; the cross curve optical laser is arranged at the front end of the rotating shaft, and the rear end of the rotating shaft is connected with the motor; a light emitting point of the cross curve optical laser is positioned at the focus position of the round Fresnel lens; a positive pole and a negative pole for power supply of the cross curve optical laser are connected with the two conducing rings respectively through a cable and two conducting rods. According to the invention, light emitted from the cross curve optical laser is transformed into parallel light through the Fresnel lens, and the parallel light is scattered by the grid plate, so that large-area high-precision scattered parallel light beams can be obtained; the large-area parallel scattered light beam emitting device also has the advantages of being simple in structure and low in cost.

Description

technical field [0001] The invention relates to a parallel light source generating device, in particular to a large-area parallel discrete light beam emitting device, which belongs to the technical field of detection, installation and debugging application of reflectors of solar concentrators. Background technique [0002] With the development of solar thermal utilization technology, the requirements for the optical performance of the concentrator are increasing, and the basic parallel light source needs to be used in the surface shape detection, installation and debugging process of the mirror surface of the large concentrator, and Due to the large size of the mirror surface, a large area of ​​parallel light source is generally required, and an identifiable very fine discrete beam needs to be obtained during the visual inspection process. [0003] At present, the collimator in optical instruments is a parallel light source device with certain precision, but the structure is...

AI Technical Summary

Problems solved by technology

[0003] At present, the collimator in optical instruments is a parallel light source device with certain precision, but the structure is complex and expensive. At the same time, the aperture of the collimator light source is limited, and the irradiated light is continuous, so it is impossible to obtain recognizable discrete beams.

Chinese patent CN 204372612 U discloses a parallel light source device for a machine vision imaging system, which is a parallel light source device composed of an LED light source and a cylindrical reflector. The realization of the characteristics of point light sources makes it difficult to guarantee the parallelism of the emitted light rays, and this technology cannot obtain discrete beams

Obviously, the installation and calibration of its functional modules is difficult, and the structure of the entire parallel light modeler is relatively complicated, and it is also impossible to obtain discrete parallel beams.

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