Collimating Lenses
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Collimating lenses are curved optical lenses that help to make parallel the light that enters 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.
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.
74-90-UV
Engineering:
- Lens Material:
- f/2 fused silica Dynasil
- Type:
- Holder
- Wavelength Range:
- 200nm – 2μm
- Connector Threads:
- “3/8-24 (ports) 9.525 mm x 25.4 mm (nipple)”
- Cosine Corrector:
- Yes (Spectralon diffusing material)
- Diameter:
- 5 mm
- Dimensions (OD):
- 16.5 x 16.5 x 19.9
- Focal Length Specification:
- 10 mm
- Mirror Coating:
- UV-enhanced aluminum
- Mirror Reflectivity:
- >80% from 200-1000 nm
- Weight:
- 11.3 g
74-ACR
Engineering:
- Connects To:
- Optical fiber
- Lens Material:
- f/2 BaF10 and FD10 fused silica
- Type:
- Achromatic doublet
- Wavelength Range:
- 350nm – 2.5μm
- Connector:
- SMA 905, 6.35 mm ferrule
- Connector Threads:
- 3/8-24 external thread
- Diameter:
- 5 mm
- Focal Length Specification:
- 10 mm
Environmental:
- Operating Temperature:
- 150 °C
74-DA
Engineering:
- Connects To:
- Spectrometer
- Lens Material:
- f/2 fused silica Dynasil
- Type:
- Single lens, direct-attach
- Wavelength Range:
- 200nm – 2.5μm
- Connector:
- SMA 905
- Connector Threads:
- “3/8-24 external thread 1/4-36 internal thread”
- Diameter:
- 5 mm
- Focal Length Specification:
- 10 mm
Environmental:
- Operating Temperature:
- 150 °C
74-UV
Engineering:
- Connects To:
- Optical fiber
- Lens Material:
- f/2 fused silica Dynasil
- Type:
- Single lens
- Wavelength Range:
- 185nm – 2.5μm
- Connector:
- SMA 905, 6.35 mm ferrule
- Connector Threads:
- 3/8-24 external thread
- Diameter:
- 5 mm
- Focal Length Specification:
- 10 mm
Environmental:
- Operating Temperature:
- 150 °C
74-VIS
Engineering:
- Connects To:
- Optical fiber
- Lens Material:
- f/2 BK-7 glass
- Type:
- Single lens
- Wavelength Range:
- 350nm – 2.5μm
- Connector:
- SMA 905, 6.35 mm ferrule
- Connector Threads:
- 3/8-24 external thread
- Diameter:
- 5 mm
- Focal Length Specification:
- 10 mm
Environmental:
- Operating Temperature:
- 150 °C
84-UV-25
Engineering:
- Connects To:
- Optical fiber
- Lens Material:
- f/4 fused silica Dynasil
- Optical Diffuser:
- 100 mm
- Type:
- Single lens
- Wavelength Range:
- 185nm – 2.5μm
- Connector:
- SMA 905, 6.35 mm ferrule
- Connector Threads:
- ¼-36 external thread
- Diameter:
- 25.4 mm
- Focal Length Specification:
- 100 mm
Environmental:
- Operating Temperature:
- 70 °C
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