Polychromator

Details Polychromator Polychromator

1986-12-16

1988-11-22

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01J 318

Patent

active

047861746

ABSTRACT:
In a polychromator, the image plane or the focus line (28) is adapted optimumly to the plane of a detector (26), e.g. to a diode-array. At the same time, an optimum linear wavelength scale is obtained on the detector (26). To this end, an arrangement having a concave grating (14), and an imaging mirror (20) is provided. An optimizing method is described by which both curves can be optimized in converging steps by alternate variation of the distance b between concave grating (14) and mirror (20) and the asymmetry measure G' of the concave grating (14).

REFERENCES:
patent: 4060327 (1977-11-01), Jacobowitz et al.
patent: 4563090 (1986-01-01), Witte
Brochure-McPherson Vacuum 3 Mode Half Meter-Monochrometer-Spectrograph-Polychromator-Model 216.5, McPherson Instrument Corporation.

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