74-series Collimating Lenses

$136.00$271.00

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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.

Each 74-series lens is 5 mm in diameter, has focal length of 10 mm and is responsive at UV-Vis or Vis-NIR wavelengths. An achromatic lens option (74-ACR) corrects for spherical and chromatic aberrations.

Collimating lenses are common to most of the sampling accessories we offer. As such, these lenses are used for an extensive array of applications and measurement techniques including absorbance, irradiance and emission.

  • Versatile – lenses optimized for the UV-Vis (185-2500 nm) or Vis-NIR (350-2500 nm)
  • 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°)
Item Type Wavelength Range Distinguishing Features
74-UV Single lens 185-2500 nm Identified by single white dot on the barrel
74-VIS Single lens 350-2500 nm Identified by single yellow dot on the barrel
74-DA Single lens, direct-attach 200-2000 nm Attaches directly to spectrometer
74-ACR Single lens 350-2500 nm Achromatic doublet comprises two lenses and corrects for spherical and chromatic aberrations

Item: 74-UV 74-VIS 74-DA 74-ACR
Type: Single lens Single lens Single lens, direct-attach Achromatic doublet
Diameter: 5 mm 5 mm 5 mm 5 mm
Focal length: 10 mm 10 mm 10 mm 10 mm
Lens material: f/2 fused silica Dynasil f/2 BK-7 glass f/2 fused silica Dynasil f/2 BaF10 and FD10 fused silica
Wavelength range: 185-2500 nm 350-2000 nm 200-2500 nm 350-2500 nm
Operating temperature: 150 °C 150 °C 150 °C 150 °C
Connector: SMA 905, 6.35 mm ferrule SMA 905, 6.35 mm ferrule SMA 905 SMA 905, 6.35 mm ferrule
Connector threads: 3/8-24 external thread 3/8-24 external thread 3/8-24 external thread 3/8-24 external thread
1/4-36 internal thread
Connects to: Optical fiber Optical fiber Spectrometer Optical fiber

Applications in which this product is used:

Measurement Techniques in which this product is used: