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.
- Versatile – lenses optimized for the UV-Visible (185-2500 nm) or Visible-NIR (350-2500 nm)
- Multiple options -- single, achromatic, and long focal length versions available
- Rugged – stainless steel barrel with black oxide finish
- Fiber optic – couple to optical fibers or spectrometers
- Adjustable – position lenses for converging to diverging FOV (~25°)
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 fused silica Dynasil
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
Weight: 11.3 g
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
74-SAPPHIRE-25
25.4mm/1-inch Sapphire Lens Collimator for Direct attachment of fiber coupling.
74-SAPPHIRE-5
5mm/0.20-inch Sapphire Lens Collimator for Direct attachment of fiber coupling.
