Diffraction Gratings

Transmission grating

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Specifications

General Parameters

Grating substrate material UV fused silica

surface finish 60-40

dimensional tolerance ±0.5mm

thickness tolerance ±0.2mm

Effective aperture 90%

Details

A grating is an optical element composed of a series of equidistant parallel engraved lines. It is a dispersive element that uses the principles of diffraction and interference of light to separate light. It is widely used in biochemical instruments, spectroscopic instruments, spectrophotometers and other related products or fields.
The optical path design of transmission gratings is simple, and for applications using fixed gratings, transmission gratings have obvious advantages, such as spectrometers. The incident beam undergoes dispersion at a fixed angle on the back of the grating. Transmitting gratings are insensitive to some types of grating collimation errors. In order to achieve high diffraction efficiency, the transmission grating has a low line density. The diffraction angle increases with the increase of the line density, and the refractive index of the substrate material limits the transmission of long waves, resulting in a decrease in performance. The dispersion characteristics of gratings make them suitable for compact systems using small detector arrays. This type of grating is also insensitive to polarization.
Guangtan Intelligent provides various transmission gratings in sizes of 12.7mm, 25mm, and 50mm. If you have any questions or needs, please feel free to contact us and we will be happy to serve you