Multi-grating spectrograph and method of changing gratings

Details Multi-grating spectrograph and method of changing gratings Multi-grating spectrograph and method of changing gratings

1992-10-30

1994-01-18

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356334, G01J 328, G01J 306

Patent

active

052803384

ABSTRACT:
An improved multiple grating spectrograph is provided comprising a grating changer for mounting gratings, and rotatable about an axis substantially perpendicular to grating lines such that changing from one grating to another preserves the wavelength-selecting angle of incidence of electromagnetic radiation. The grating changer preferably includes a grating holder, and an actuator for moving the holder about the axis.

REFERENCES:
patent: 4988196 (1991-01-01), Gilligan
"Spectrometers"--Made to Measure, The new M Series spectrometers from SPEX etc.--SPEX Industries, Inc., Edison, NJ, date unknown.

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