Spectrographic astigmatism correction system

Details Spectrographic astigmatism correction system Spectrographic astigmatism correction system

1993-01-27

1995-09-19

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356328, G01J 328

Patent

active

054520851

ABSTRACT:
An optical input system for correcting astigmatism introduced by off-axis reflectors in a spectrograph includes an aspheric mirror producing a correcting factor which compensates for the spectrograph distortions and enables the spectrograph to produce multiple astigmatic light images at its two-dimensional charge-coupled-device output.

REFERENCES:
patent: 4707056 (1987-11-01), Bittner
patent: 4726680 (1988-02-01), Allington
patent: 5066127 (1991-11-01), Schwenker
patent: 5257085 (1993-10-01), Ulich et al.

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