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  • CC-3 Free Optics

Cosine Correctors for Spectrometers & Optical Fibers

Lead Time: 2 weeks

Prices From $75.00

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Product Details

Cosine correctors are optical diffusers (opaline glass, PTFE or Spectralon) that couple to fibers and spectrometers to collect signal from 180° field of view. Cosine correctors are specified for setups requiring the redistribution of incident light, such as measuring spectral irradiance of a plane surface in air or other media.

Typical applications include relative and absolute spectral intensity measurements of LEDs, light sources and other radiant sources (including solar). Options are available for connecting to optical fibers or spectrometers.

Product Overview

  • Wide FOV – collects light from 180° field of view
  • Versatile – couples to fibers or directly to spectrometers
  • Irradiance measurement tool – ideal for intensity measurements of LEDs, light sources and solar sources

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Select model to see full specifications


Connects To:
Optical fiber
Optical Diffuser:
Opaline glass
Wavelength Range:
200nm - 2.5μm
Diffusers (Diameter):
3900 µm
7140 µm
Dimensions (OD):
12.7 mm
6.35 mm
Field Of View:
Replacement Diffuser:
with restrictions*