Abstract

A new type of plane grating monochromator has been devised in which the grating is illuminated by convergent light. The main feature of this design is an arrangement by which the grating is simultaneously translated and rotated by means of a simple rotation about an axis displaced from the grating face. The motion is such that the spectrum remains in good focus on a fixed exit slit over a range of wavelengths from zero order to 5000 Å in the third order for a grating with 600 lines/mm. This type of mount has the advantages of small aberrations and small astigmatism over the usable range. Because there are only two reflections, the instrument is best suited for studying problems where low light level might be of concern, such as for astronomical work or for use in the far ultraviolet.

© 1966 Optical Society of America

Errata: Scanning Spectrometer of the Gillieson Type

Daniel J. Schroeder
Appl. Opt. 5(6) 1074_2-1074 (1966)

Monk-Gillieson Monochromator

T. Kaneko, T. Namioka, and M. Seya
Appl. Opt. 10(2) 367-381 (1971)

A Wide Spectral Range Ultra-Rapid Scan Spectrometer

Charles H. Church and Leonard Gampel
Appl. Opt. 5(2) 241-244 (1966)

The Circularly Symmetric Grille Spectrometer

B. A. Tinsley
Appl. Opt. 5(7) 1139-1145 (1966)

Astigmatism Compensation in the Czerny–Turner Spectrometer

Murphy L. Dalton
Appl. Opt. 5(7) 1121-1123 (1966)