To convert divergent beams of light into a parallel beam, a collimating lens is needed. Avantes collimating lenses are optimized for the UV/VIS/NIR range (200-2500 nm) and have anodized aluminum housings.
The COL-UV/VIS and COL-90-UV/VIS have a 6 mm diameter lens with a confocal length of 8.7 mm. The COL-90-UV/VIS is used when a 90-degree exit angle is needed. The focal point for the COL-UV/VIS and COL-90-UV/VIS can be adjusted. The COL-UV/VIS can also be ordered with an FC/PC connector.
The COL-UV/VIS-25 is the big brother of the COL-UV/VIS. It has a lens diameter of 25 mm and a confocal length of 50 mm. This larger collimating lens is suitable for collection of light in free space.
|Lens diameter||6 mm||25 mm|
|Lens confocal length||8.7 mm||50 mm|
|Lens material||UV-grade fused sillica|
|Wavelength range||200-2500 nm|
|Fiber connection||SMA 905, UNS 1/4" (standard, FC/PC also possible)|
|Mirror reflectivity||N.a.||>90% (200-1100nm)||N.a.|
|Housing material||Aluminum black anodized|
|Thread||UNF 3/8"-24||N.a.||M6 (on the side for OPM mounting)|
|Temperature||-30ºC to 100ºC (-HT version 200ºC)||-30ºC to 100ºC|
|COL-UV/VIS||Collimating lens for UV/VIS/NIR, incl. SMA adapter and adj. focus|
|COL-UV/VIS-FCPC||Collimating lens for UV/VIS/NIR, incl. FC/PC adapter, adj. focus|
|COL-90-UV/VIS||Collimating lens under 90 degrees for UV/VIS/NIR, incl. SMA adapter|
|COL-UV/VIS-25||Collimating lens 25 mm for UV/VIS/NIR, incl. SMA adapter and adj. focus|
|DA-COL-SPEC||Direct-attach collimator for spectrometers, usable for parallel incoming beams|