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US 5,030,006 AGranted
Monochromator for single and multiplexed dual wavelength spectroscopy
AssigneeSLM Instruments, Inc.
InventorGeorge W. Mitchell
Life of this patent
Estimating the term…
Abstract
A monochromator utilizing a single light source productive of a uniformly intense, single beam, single wavelength coaxial beam output or alternatively, a single beam selected dual wavelength coaxial beam output.
Claims7
In a monochromator, the combination comprising:
- a single source of white light and collimating means productive of a single, collimated, white light beam;
- a pair of selectively positionable wavelength dispersing members, and
- means for selectively illuminating either both of said members symmetrically with said collimated white light or illuminating one of said members with all of said white light beam to produce, respectively, two, uniformly intense monochromatic output light beams or a single uniformly intense, monochromatic output light beams.
In a monochromator for use with spectrofluorometers or spectrophotometers and like instruments, the combination comprising:
- a single source of white light;
- means for producing a single collimated light beam from said light;
- a slide mechanism carrying a beam splitter and mirror positionable by said mechanism to respectively split said light beam into a pair of identical, intensity balanced symmetrical beams or, alternatively, reflect all of said light beam;
- a pair of wavelength dispersing members, each arranged for illumination by one of said symmetrical beams created by said beam splitter or, alternately, illumination of only one of said wavelength dispersing members by the light beam reflected from said mirror;
- each dispersing member being independently productive of a monochromatic output light beam or arbitrary selected wavelength;
- means for converting the arbitrary selected wavelength output beams from the symmetrically illuminated dispersing members or, alternatively, the arbitrarily selected wavelength output beam of said one illuminated dispersing member into a single collimated multiplexed beam or a single collimated non-multiplexed beam, respectively, comprising;
- chopper means interferingly positioned in the paths of said arbitrary wavelength output beams or beam to effect a single multiplexed or a single non-multiplexed beam, respectively, therefrom for transmission to a test sample.
4 more elements
Dependencies are inferred from the claim text.