74-90 series Lens Holders & Mounts


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Item Code: 74-90-UV, 74-90-UV-CC3

Ocean Optics 74-90-UVs are 3/8-24 threaded black anodized aluminum assemblies for mounting lenses at 90°, for applications involving limited space and inconvenient optical fiber routing. Versions are available for coupling to a pair of optical fibers or to an optical fiber on one end and a cosine corrector on the other.

Each 74-90-UV has a mirror under its cap that reflects light from the collimating lens to 90°. The mirror is coated with an aluminum substrate that is >80% reflective from 200-1000 nm. A pair of 3/8-24 threaded ports accommodate collimating lenses (not included). The top port has a 3/8″ x 1″ threaded nipple that can be removed for a connecting to a male adapter.

  • Versatile – rugged assembly for mounting lenses at 90°
  • Reflective design – mirror assembly is >80% reflective from 200-1000 nm
  • Fiber optic – can be used with two fibers or with a fiber and cosine corrector
  • Flexible – allows routing of optical fibers without concern for transmission loss
Item 74-90-UV 74-90-UV-CC3
Type Holder Holder

Item: 74-90-UV 74-90-UV-CC3
Diameter (lens): 5 mm 5 mm
Focal length (lens): 10 mm 10 mm
Lens material: f/2 fused silica Dynasil f/2 fused silica Dynasil
Wavelength range (lens): 200-2000 nm 200-2000 nm
Operating temperature (lens): 120 °C 120 °C
Assembly material: Black anodized aluminum Black anodized aluminum
Dimensions (mm): 16.5 x 16.5 x 19.9 16.5 x 16.5 x 19.9
Weight: 11.3 g 11.3 g
Mirror coating: UV-enhanced aluminum UV-enhanced aluminum
Mirror reflectivity: >80% from 200-1000 nm >80% from 200-1000 nm
Cosine corrector: No Yes (Spectralon diffusing material)
Threads: 3/8-24 (ports) 3/8-24 (ports)
9.525 mm x 25.4 mm (nipple) 9.525 mm x 25.4 mm (nipple)

Applications in which this product is used:

Measurement Techniques in which this product is used: