Imaging effect optimization method of scanning imaging system

Abstract

An imaging effect optimization method of a scanning imaging system comprises the steps: receiving reflected light of a swing mirror through a CCD to obtain a series of light spot signals; outputting the light spot signals to a CCD drive circuit through AD conversion, and calculating coordinate information of each light spot; enabling the CCD to read angle information of rotation of the swing mirror through a photoelectric encoder, calibrating an angle value corresponding to the center of each light spot, outputting the angle values to the PC, and comparing the actually measured angle values with a completely linear ideal angle value to obtain a difference value between the actually measured angle values and the ideal angle value, so the linearity of the swing mirror is calculated; taking the fixed corner signal as an exposure synchronizing signal of the line scanning imaging system to synchronize the imaging system, and optimizing the imaging effect of the system.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, in particular to a method for optimizing the imaging effect of a scanning imaging system, which is mainly applied to the test of the linearity of the pendulum mirror of the scanning imaging system and the optimization of the scanning imaging system. Background technique [0002] At present, the commonly used methods for testing the linearity of the pendulum mirror in scanning imaging systems are mainly divided into two categories, one is indirect testing through the feedback signal in the motor, and the other is measuring on the scale by optically scanning reflected laser projection. The former method is simple, but the feedback signal reflects the position of the motor and cannot directly reflect the linearity of the oscillating mirror, especially in the area where the oscillating mirror is far away from the motor axis, and the accuracy is limited. The method of measuring the laser proje...

AI Technical Summary

Problems solved by technology

The former method is simple, but the feedback signal reflects the position of the motor, which cannot directly reflect the linearity of the oscillating mirror, especially in the area where the oscillating mirror is far away from the motor axis, and the accuracy is limited

The method of measuring the laser projection reflected by optical scanning on the scale can directly and intuitively reflect the linearity of the pendulum mirror, but the accuracy of the scale is limited, and the entire system takes up a large space, requiring manual participation, which is inconvenient to test and cannot be compared with The whole system forms a closed loop

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