Optics: measuring and testing – By dispersed light spectroscopy – With monochromator structure
Patent
1997-09-19
1999-03-30
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With monochromator structure
356308, G01J 318
Patent
active
058895884
ABSTRACT:
A random wavelength access monochromator incorporates a pair of coaxial off-axis parabolic reflectors configured so that the spherical aberrations introduced by the reflectors cancel each other. Light enters through an entrance slit and impinges upon a first off-axis parabolic reflector that collimates the beam and directs it towards a stationary grating. The grating in turn defracts the light and directs it towards a high speed scanning mirror which reflects the defracted light onto a second off-axis parabolic reflector which in turn focuses the beam to an exit slit. Both off-axis parabolic surfaces share the same axis of revolution and the same collimated beam axis. In order to make the apparatus practical, the beam is folded twice so that the exit point is focused away from the internal path of the beam. The resulting instrument is capable of accepting a broad wavelength beam of light, dividing that broad band light into discrete wavelength bands of less than 1 nm optic wavelength, and emitting only the desired wavelength band.
REFERENCES:
patent: 2750836 (1956-06-01), Fastie
patent: 3011391 (1961-12-01), Fastie
patent: 3888590 (1975-06-01), White
patent: 4634276 (1987-01-01), Sharpe
patent: 4984888 (1991-01-01), Tobias
patent: 4995721 (1991-02-01), Krupa et al.
patent: 4995725 (1991-02-01), Riedel et al.
patent: 5089915 (1992-02-01), Gobell
patent: 5192981 (1993-03-01), Slutter et al.
patent: 5285255 (1994-02-01), Baranne et al.
patent: 5305083 (1994-04-01), Marianik et al.
patent: 5384656 (1995-01-01), Schwenker
patent: 5448351 (1995-09-01), Florek et al.
patent: 5497231 (1996-03-01), Schmidt
patent: 5532818 (1996-07-01), Tokumoto
"Coma Canceling Monochromator with No Slit Mismatch" by V.L. Chupp and P.C. Grantz vol. 8, No. 5 --Applied Optics --May, 1969.
Kovach Ronald J.
Santman Jeffry J.
Evans F. L.
Photon Technology International
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