Collimating Lenses for Spectrometers & Optical Fibers

Collimating lenses are optical lenses that make parallel the light beams that enter your spectrometer setup. These lenses allow users to control the field of view, collection efficiency and spatial resolution of their setup, and to configure illumination and collection angles for sampling. 

Ocean Optics collimating lenses can be attached to the spectrometer, coupled to optical fibers, or integrated into sampling accessories. Most lenses have an inner barrel threaded for SMA 905 connectors. The inner barrel slides relative to the lens fixture for adjusting the focus; a setscrew secures the barrel.

Specifications	74-ACR	74-DA	74-UV	74-90-UV	74-UV-HT-VAC	74-VIS	COL-UV-30	84-UV-25
Type	Achromatic doublet	Single lens direct attach	Single lens	A mirror under the cap reflects light from the collimating lens at a 90° angle	Specialty lens for high temperature, high pressure vacuum applications	Single lens	Largest-diameter lens	Single lens
Connects To	Optical fiber	Spectrometer	Optical fiber	Optical fiber	Optical fiber	Optical fiber	Optical fiber	Optical fiber
Lens Material	f/2 BaF10 and FD10 fused silica	f/2 fused silica	f/2 fused silica	f/2 fused silica	f/2 fused silica	f/2 BK-7 glass	f/2 fused silica	f/4 fused silica
Wavelength Range	350-2000 nm	200-2000 nm	200-2000 nm	200-2000 nm	190-2000 nm	350-2000 nm	200-2000 nm	200-2000 nm
Connector	SMA 905 6.35 mm ferrule	SMA 905	SMA 905 6.35 mm ferrule	SMA 905 6.35 mm ferrule	–	SMA 905 6.35 mm ferrule	SMA 905 6.35 mm ferrule	SMA 905 6.35 mm ferrule
Connector Threads	3/8-24 external thread	3/8-24 external thread 1/4-36 internal thread	3/8-24 external thread	3/8-24 external thread	3/8-24 external thread	3/8-24 external thread	¼-36 external thread	¼-36 external thread
Diameter	5 mm	5 mm	5 mm	5 mm	5 mm	5 mm	30 mm	25.4 mm
Focal Length	10 mm	10 mm	10 mm	10 mm	10 mm	10 mm	30 mm	100 mm
Operating Temperature	150 °C	150 °C	150 °C	120 °C	250 °C	150 °C	200 °C	70 °C