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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 24 — Nov. 21, 2011
  • pp: 23901–23907

Analysis and simulation of the phenomenon of secondary spots of the TDI CCD camera irradiated by CW laser

Ke Sun, Liangjin Huang, Xiang’ai Cheng, and Houman Jiang  »View Author Affiliations

Optics Express, Vol. 19, Issue 24, pp. 23901-23907 (2011)

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The phenomenon of secondary spots is observed in the experiment of TDI CCD camera irradiated by CW He-Ne laser. It is considered to be related to the scattering of the slit in front of the sensor and the reflection of the window of the TDI CCD chip. Additional experiments and ray tracing simulation are performed to study the mechanism of the secondary spots. The experimental and simulated results demonstrated that the scattering of the side walls of the slit is the main source of the secondary spots. Furthermore, the operation mode of rotary scanning provides the chance of scattering incident beam to the side wall of the slit. This paper will provide a preliminary hint to the optimum design of slit in camera to reduce the effects of the secondary spots to the image quality.

© 2011 OSA

OCIS Codes
(040.1490) Detectors : Cameras
(040.1520) Detectors : CCD, charge-coupled device
(110.2960) Imaging systems : Image analysis
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(140.3460) Lasers and laser optics : Lasers
(290.0290) Scattering : Scattering

ToC Category:

Original Manuscript: June 15, 2011
Revised Manuscript: July 29, 2011
Manuscript Accepted: October 14, 2011
Published: November 10, 2011

Ke Sun, Liangjin Huang, Xiang’ai Cheng, and Houman Jiang, "Analysis and simulation of the phenomenon of secondary spots of the TDI CCD camera irradiated by CW laser," Opt. Express 19, 23901-23907 (2011)

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