Device and method for automatically calibrating performance parameters of CCD (Charge Coupled Device)

Abstract

The invention relates to a device and a method for automatically calibrating performance parameters of a CCD (Charge Coupled Device). The device for automatically calibrating the performance parameters of the CCD comprises a control module, a pulse laser, an integrating sphere, a mechanical shutter, a detected CCD detector and a main control computer which are sequentially connected, wherein the control module comprises a clock pulse generating circuit, a pulse width automatic regulating circuit, an output pulse drive capability amplifying circuit, a power supply module, a shutter control circuit and a CCD trigger signal output circuit, the pulse width automatic regulating circuit, the output pulse drive capability amplifying circuit and the power supply module are sequentially connected, the shutter control circuit is respectively connected with the pulse width automatic regulating circuit and the mechanical shutter, and the CCD trigger signal output circuit is respectively connected with the pulse width automatic regulating circuit and the detected CCD detector; the power supply module comprises a laser drive power supply and a power supply temperature acquisition system, and the power supply module is also connected with the pulse laser and the pulse width automatic regulating circuit. The device and the method for automatically calibrating the performance parameters of the CCD, provided by the invention, have the advantages of high stability, high accuracy, high confidence coefficient and simpleness in operation.

Description

technical field [0001] The invention belongs to the field of photoelectric testing, and relates to a device and method capable of precisely controlling the linear output of pulsed laser power and synchronous acquisition by CCD, so as to automatically calibrate parameters such as the dynamic range, nonlinearity, and signal-to-noise ratio of an area array CCD, and in particular to a device and method A device and method for automatic calibration of CCD performance parameters. Background technique [0002] In the high-power laser device of the National Science and Technology Project, the CCD is usually used to collect near-field images, and then the laser near-field indicators are obtained through calculation. In order to reduce the impact of the performance parameters of the CCD itself on the near-field test, it is necessary to strictly screen and calibrate the selected CCD. [0003] The dynamic range, nonlinearity and signal-to-noise ratio of CCD are important parameters to ...

AI Technical Summary

Problems solved by technology

The linear adjustment of the output power of the laser, the continuous exposure of the CCD, and the continuous detection of the laser power by the power detector are independent of each other. Without unified control, it is impossible to realize automatic testing in the true sense, and the CCD is in the process of frame transfer. There will be tailing

The entire testing process requires the participation of testers, and the influence of personnel operations cannot be avoided. It is difficult to guarantee repeatability and test accuracy.

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