Convenience method for measuring the modulation transfer function of focal plane arrays

Bing Chen; Yunsheng Qian; Benkang Chang; Dianxiu Wei; Zhiyuan Zong

doi:10.1117/12.444997

19 October 2001 Convenience method for measuring the modulation transfer function of focal plane arrays

Bing Chen, Yunsheng Qian, Benkang Chang, Dianxiu Wei, Zhiyuan Zong

Proceedings Volume 4580, Optoelectronics, Materials, and Devices for Communications; (2001) https://doi.org/10.1117/12.444997
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China

Abstract

The modern trend in focal plane arrays (FPAs) implementation is to include an increasing amount of analog signal processing in micro technology circuitry embedded in the FPA construction. This technology includes such function as time-delayed integration (TDI). While such integration makes the FPA and its associated signal processing more compact and faster, it introduces new complications into the testing of the FPA, since the detector outputs, by themselves, are no longer directly accessible. The CdHgTe FPAs detectors with on-chip TDI have been successfully incorporated into infrared imagers. These impose requirements on the instrumentation to establish the modulation transfer function (MTF) of the integrated FPAs. This paper details a method for measuring the MTF for such arrays within 3-5μ+m and 8-14μ+m spectral band. A description of a test facility for testing and evaluating MTF of FPA is given. We use a knife-edge target to measure MTF. The Pentium III computer system takes the charge of controlling and calculating. Some other methods of MTF measurement will be mentioned.

Citation Download Citation

Bing Chen, Yunsheng Qian, Benkang Chang, Dianxiu Wei, and Zhiyuan Zong "Convenience method for measuring the modulation transfer function of focal plane arrays", Proc. SPIE 4580, Optoelectronics, Materials, and Devices for Communications, (19 October 2001); https://doi.org/10.1117/12.444997

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KEYWORDS

Modulation transfer functions

Staring arrays

Sensors

Computing systems

Diffraction

Optical transfer functions

Imaging systems

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