In this paper I present a dual channel 7 degree full field of view f/2.5 athermal optical design athermalized from 0 to 50 degrees C that operates in the wavelength range of 2.0 to 2.5 microns suitable for methane imaging. The system was designed to image in the field. I was responsible for the optical design, tolerance budget, alignment plan, and peformance testing of the system. Predicted and as-built performance data including interferometric and ensquared energy measurements for both imaging channels are also shown in the paper. The as-built optical system meet the design requirements and preformed well in the field.
Citation: A. Tanbakuchi; M. Smith; J. Mercier; S. Vigil; T. Embree; A. Ison, "Optical design and performance testing of an athermal SWIR gas correlation imager," Proc. SPIE. 8491, Optical System Alignment, Tolerancing, and Verification VI, 84910B. October 15, 2012 doi: 10.1117/12.928001 PDF