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Proceedings Paper

Typical effects of laser dazzling CCD camera
Author(s): Zhen Zhang; Jianmin Zhang; Bibo Shao; Deyan Cheng; Xisheng Ye; Guobin Feng
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Paper Abstract

In this article, an overview of laser dazzling effect to buried channel CCD camera is given. The CCDs are sorted into staring and scanning types. The former includes the frame transfer and interline transfer types. The latter includes linear and time delay integration types. All CCDs must perform four primary tasks in generating an image, which are called charge generation, charge collection, charge transfer and charge measurement. In camera, the lenses are needed to input the optical signal to the CCD sensors, in which the techniques for erasing stray light are used. And the electron circuits are needed to process the output signal of CCD, in which many electronic techniques are used. The dazzling effects are the conjunct result of light distribution distortion and charge distribution distortion, which respectively derive from the lens and the sensor. Strictly speaking, in lens, the light distribution is not distorted. In general, the lens are so well designed and fabricated that its stray light can be neglected. But the laser is of much enough intensity to make its stray light obvious. In CCD image sensors, laser can induce a so large electrons generation. Charges transfer inefficiency and charges blooming will cause the distortion of the charge distribution. Commonly, the largest signal outputted from CCD sensor is restricted by capability of the collection well of CCD, and can’t go beyond the dynamic range for the subsequent electron circuits maintaining normal work. So the signal is not distorted in the post-processing circuits. But some techniques in the circuit can make some dazzling effects present different phenomenon in final image.

Paper Details

Date Published: 4 May 2015
PDF: 7 pages
Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95430A (4 May 2015); doi: 10.1117/12.2178366
Show Author Affiliations
Zhen Zhang, Northwest Institute of Nuclear Technology (China)
Jianmin Zhang, Northwest Institute of Nuclear Technology (China)
Bibo Shao, Northwest Institute of Nuclear Technology (China)
Deyan Cheng, Northwest Institute of Nuclear Technology (China)
Xisheng Ye, Northwest Institute of Nuclear Technology (China)
Guobin Feng, Northwest Institute of Nuclear Technology (China)

Published in SPIE Proceedings Vol. 9543:
Third International Symposium on Laser Interaction with Matter
Yury M. Andreev; Zunqi Lin III; Xiaowu Ni; Xisheng Ye, Editor(s)

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