Double pass monochromator

Details Double pass monochromator Double pass monochromator

1999-07-09

2000-12-26

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With monochromator structure

G01J 318

Patent

active

061668052

ABSTRACT:
The present invention relates to a double pass monochromator that improves wavelength resolution and reduces the actual length thereof. A return reflection means 7 that reverses the direction of dispersion of the wavelength of the second pass light 1c, 1f emitted and incident on a diffraction grating 4 during the reflection. In addition, the angles of the incident and emitted light during separation of spectral components by the diffraction grating are identical during the first and second diffraction.

REFERENCES:
patent: 2922331 (1960-01-01), Fastie et al.
patent: 3888590 (1975-06-01), White

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