A smart diaphragm and laser calibration method

Abstract

The invention provides an intelligent diaphragm and an automatic laser calibration method. The intelligent diaphragm is composed of multiple crystalline silicon photocells forming an enclosed centrally-symmetric structure, a diaphragm light transmission aperture formed by multiple crystalline silicon photocells through enclosure and an internal structure. The automatic calibration method is utilized, the to-be-calibrated laser is reflected through an electric mirror adjusting frame to pass through the intelligent diaphragm, a received optical signal is converted by the intelligent diaphragm toobtain voltage signals of corresponding paths, the obtained voltage signal data value is sent by a current / voltage conversion circuit comparator to an electric mirror adjusting frame controller, thelight paths passing through the electric mirror adjusting frame are controlled for adjustment so that the center of a spot of the to-be-calibrated laser passing through the intelligent diaphragm coincides with the center of the intelligent diaphragm, and automatic calibration of the to-be-calibrated laser is achieved. The intelligent diaphragm is advantaged in that the silicon photocells are packaged, cost is low, the intelligent diaphragm is easy for realization, the laser can be rapidly and conveniently collimated, and high-precision collimation laser output is obtained.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to an intelligent aperture for assisting optical axis calibration and a laser calibration method using the intelligent aperture. Background technique [0002] A stop is the edge, frame, or specially placed perforated barrier of an optical element in an optical assembly, sized by lens frames and other metal frames, to confine a beam of light. In the optical system, the inner hole of the metal frame for clamping the optical parts is often used to limit the light beam, and sometimes it is necessary to specially set some metal sheets with holes. The light holes of these holes or sheets are generally circular, and their centers are located at the on the central axis. The function of the diaphragm in the optical system can determine the illumination of the image plane and the field of view of the system, intercept harmful stray light in the system, and limit part of the light in the bea...

AI Technical Summary

Problems solved by technology

If the manual adjustment method is used, it is related to the observation angle of the operator, so it will bring a large system error

If CCD observation is used to assist adjustment, it is necessary to build an auxiliary far-field imaging optical path so that the image of the diaphragm is accurately formed on the photosensitive surface of the CCD; in the debugging of compact lasers, it will be difficult to build an auxiliary far-field imaging optical path , which increases the workload and introduces new systematic errors

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