Barium fluoride and glass combinations for short-wave infrared designs

D. W. Warren

doi:10.1117/12.862983

19 August 2010 Barium fluoride and glass combinations for short-wave infrared designs

D. W. Warren

Proceedings Volume 7786, Current Developments in Lens Design and Optical Engineering XI; and Advances in Thin Film Coatings VI; 778618 (2010) https://doi.org/10.1117/12.862983
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

Achromatic doublet theory is recast for the 1-2.5μm short-wavelength infrared band, suggesting the desirability of combining barium fluoride with specific high index optical glasses having large differences in primary SWIR dispersion and small differences in partial SWIR dispersion. Candidate combinations of materials are screened empirically using the performance of optimized f/3 airspaced achromatic doublets employing barium fluoride as the positive element. Polychromatic RMS geometric image spot sizes appear to increase quadratically with difference in partial SWIR dispersion between barium fluoride and the complementary glasses. Examples of complex (fast, wide field) systems demonstrate the utility of the most promising combinations.

Citation Download Citation

D. W. Warren "Barium fluoride and glass combinations for short-wave infrared designs", Proc. SPIE 7786, Current Developments in Lens Design and Optical Engineering XI; and Advances in Thin Film Coatings VI, 778618 (19 August 2010); https://doi.org/10.1117/12.862983

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