Near Infrared Lenses

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Optec
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Near-infrared cameras based on InGaAs sensors have found wide use in industrial inspection, telecommunications, thermal monitoring and research. To address the special requirements of this optical band, Optec has designed a large selection of lenses optimized for both the wavelengths properties of the sensors used to detect them.

Features of Optec SWIR Lenses The SWIR band most often used extends over the 900-1700 nm range. In some cases, the long wavelength end of the band may extend to 2500 or even 3000 nm. Optec offers lenses to cover all of these ranges. All Optec SWIR lenses share these features:
	Antireflectance coatings optimized for high SWIR transmission Designs using new non-toxic glasses Low chromatic aberration across the SWIR band Long back focal distance for ease of camera design Rugged construction of focus and iris mechanisms for long life Resolution matched to imager pixels for low aliasing

Learn more about SWIR imaging

Optec SWIR Lens Product Lines

Optec offers a broad selection of SWIR lenses for general and specialized applications. The new series are ideal for use with larger sensors and smaller pixels. All of these lenses are available coated for 900-1700nm, 1700-2300nm or 900-2300nm use.

f/1.4 with 20.5 mm image circle		Focal lengths – 25, 35, 50, 75, 100 mm All models f/1.4 20.5 mm image diameter 45% modulation at 25 lp/mm Canon FD, Nikon F or 42 mm thread mount C-mount adapters available More…

f/2 with 20.5 mm image circle		Focal lengths – 25, 35, 50, 75, 100 mm All models f/2 20.5 mm image diameter 45% modulation at 25 lp/mm Canon FD, Nikon F or 42 mm thread mount C-mount adapters available More…

f/4 with 20.5 mm image circle		Focal lengths – 25, 35, 50, 75, 100 mm All models f/4 20.5 mm image diameter 45% modulation at 25 lp/mm Canon FD, Nikon F or 42 mm thread mount Low-cost models without iris available C-mount adapters available More…

f/2 with 16 mm image circle		Focal lengths – 25, 35, 50, 75, 100 mm All models f/2 16 mm image diameter 40% modulation at 25 lp/mm Canon FD mount C-mount adapters available More…

Long focal lemgth lenses		Focal lengths – 200, 300, 500, 1000 mm 20.5 mm image diameter (most models) High modulation at sensor Nyquist Canon FD mount C-mount adapters available Motorized models available More…

Lenses with variable focal length		75-500 mm zoom available 100/200 mm dual FOV model 20.5 mm image diameter High modulation at sensor Nyquist Canon FD mount C-mount adapters available Fully motorized More…

Visible and SWIR lenses		25 mm focal lemgth, f/1.7 Coated and corrected for 400-1700 mm 11 mm image diameter 45% modulation at 50 lp/mm Canon FD, Nikon F or 42 mm thread mount C-mount adapters available More…

Lenses for Special Situations		Focal lengths to 300 mm Low-cost f/4 C-mount models Infrared optical processing couplers Focal length extenders More…

Optec also makes multi-channel SWIR prisms – Information here

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