Optics: measuring and testing – By dispersed light spectroscopy – With monochromator structure
Patent
1990-02-12
1992-01-07
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With monochromator structure
359569, G01J 318, G02B 518
Patent
active
050784951
ABSTRACT:
A plane grating, particularly for a monochronomator, is provided with varied-spaced straight and parallel grooves in a light beam path to compensate for other light affecting components, for example a spherical mirror used for collimating or focusing the light beam. The angle of incidence with respect to the light for each of the grooves may vary and the angle of diffraction with respect to the light for each groove may be required to vary with the imperfection of collimation and focusing of the beam. The grooves are varied in their spacing to compensate for the variation of both incidence and diffraction direction.
REFERENCES:
"Webster's New Collegate Dictionary," pp. 664, 1977.
"A Grazing Incident Monochromator with a Varied-Space Plane Grating . . . " Harada et al., SPIE, vol. 503, 1984, pp. 114-118.
"High Resolution Gratings for the Soft X-Ray," Hettrick, Nuclear Instruments and Methods, 1988, pp. 404-413.
"Aberration-Corrected Plane Gratings," Thevenon et al., SPIE, vol. 815, 1984.
Proceedings of SPIE, vol. 815, (1987) pp. 136-145, 96-101.
Journal of Optical Society of America, vol. 54, 1964, pp. 879-889.
Proceedings of SPIE, vol. 815, 1988, pp. 96-101, 136-142.
Harada Tatsuo
Kita Toshiaki
Kurosaki Toshiei
Terasawa Tsuneo
Evans F. L.
Hantis K. P.
Hitachi , Ltd.
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