Part No.: IRL-20A
Description: 20mm high precision Ge lens A
Focal length: 20mm
FOV: 23° X 17°
IFOV: 1.30mrad
Applicable detector: 320 x 240 focal plane assembly, Vanadium Oxide (VOx) un-cooled microcalorimetry detector with 25µ M intervening space
Spectrum range: 8 µ M - 14 µ M
Min focal length: 0.15 m
F/#: 0.8

Part No.: IRL-20B
Description: 20mm high precision Ge lens B
Focal length: 20mm
FOV: 23° X 17°
IFOV: 2.6mrad
Applicable detector: 160 x 120 focal plane assembly, Vanadium Oxide (VOx) un-cooled microcalorimetry detector
Spectrum range: 8 µ M - 14 µ M
Min focal length: 0.15 m
F/#: 0.8

Part No.: IRL-20C
Description: 20mm high precision Ge lens C
Focal length: 20mm
FOV: 23° X 17°
IFOV: 1.25mrad
Applicable detector: 320 x 240 focal plane assembly, un-cooled microcalorimetry detector
Spectrum range: 7.5 µ M - 14 µ M
Min focal length: 15 cm(around 6 inches)
F/#: 0.8