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 aluminium housings.

The COL-UV/VIS and COL-90-UV/VIS have a 6mm diameter lens with a confocal length of 8.7mm. 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 25mm and a confocal length of 50mm. This larger collimating lens is suitable for collection of light in free space.

Product Information

COL-UV/VIS COL-90-UV/VIS COL-UV/VIS-25
Lens Diameter 6 mm 6 mm 25 mm
LensConfocal Length 8.7 mm 8.7 mm 50 mm
Lens Material UV Grade Fused Silica UV Grade Fused Silica UV Grade Fused Silica
Wavelenght Range 200-2500 nm 200-2500 nm 200-2500 nm
Fiber Connection SMA-905, UNS 1/4" (standard, FC/PC also possible) SMA-905, UNS 1/4" (standard, FC/PC also possible) SMA-905, UNS 1/4" (standard, FC/PC also possible)
Mirror Reflectivity n.a. >90% (200-1100 nm) n.a.
Housing Material Aluminum Black Anodized Aluminum Black Anodized Aluminum Black Anodized
Thread UNF 3/8"-24 n.a. n.a.
Temperature Range -30°C to 100°C (-HT version 200°C) -30°C to 100°C (-HT version 200°C) -30°C to 100°C (-HT version 200°C)
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