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  • Free Space Optics 74-ACR_3

74-ACR Achromatic Collimating Lens

Part Number: 74-ACR

Lead Time: 2 weeks

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Product Details

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. The achromatic lens option (74-ACR) corrects for spherical and chromatic aberrations.

Product Overview

  • Versatile – lenses optimized for the UV-Visible (185-2500 nm) or Visible-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°)


Select model to see full specifications


Connects To:
Optical fiber
Lens Material:
f/2 BaF10 and FD10 fused silica
Achromatic doublet
Wavelength Range:
350nm - 2.5μm
SMA 905
6.35 mm ferrule
Connector Threads:
3/8-24 external thread
5 mm
Focal Length Specification:
10 mm


Operating Temperature:
150 °C