High field-of-view IR scanner using microlens arrays

Chen Feng; Anees Ahmad; RamaGopal V. Sarepaka

doi:10.1117/12.210053

22 May 1995 High field-of-view IR scanner using microlens arrays

Chen Feng, Anees Ahmad, RamaGopal V. Sarepaka

Proceedings Volume 2470, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing VI; (1995) https://doi.org/10.1117/12.210053
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

There is a growing demand for a larger field coverage for scanning in IR instrumentation. We have explored the possibility of using the microlens arrays (MLAs) for this purpose, and have developed a generic IR imaging scanner. The application of MLAs in the wide-field IR imagers is presented, along with their advantages and limitations. A series of systems using MLAs and diffractive elements have been designed and analyzed for a diffraction-limited performance with 45 degree(s) and 60 degree(s) field of view for a f/1.4 IR imager operating in 3 - 5 micrometers wavelength range for 1-D and 2-D scanning applications. The optical design considerations, fabrication issues, and thermal effects are also discussed for these types of scanners.

Citation Download Citation

Chen Feng, Anees Ahmad, and RamaGopal V. Sarepaka "High field-of-view IR scanner using microlens arrays", Proc. SPIE 2470, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing VI, (22 May 1995); https://doi.org/10.1117/12.210053

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