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 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 DA-COL-SPEC
Lens Diameter 6 mm 6 mm 25 mm 9 mm
Lens Focal Length 8.7 mm 8.7 mm 50 mm 27 mm
Lens Material UV Grade Fused Silica UV Grade Fused Silica UV Grade Fused Silica UV Grade Fused Silica
Wavelenght Range 200-2500 nm 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) Direct attached
Mirror Reflectivity n.a. >90% (200-1100 nm) n.a. n.a.
Housing Material Aluminum Black Anodized Aluminum Black Anodized Aluminum Black Anodized Aluminum Black Anodized
Thread UNF 3/8"-24 n.a. n.a. 1/4"-36 UNS
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) -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
DA-COL-SPEC Direct Attached Collimator for Spectrometer. Usable for parallel incoming beams