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.
|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|
|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|