Optics: measuring and testing – By dispersed light spectroscopy – With monochromator structure
Patent
1994-05-26
1996-03-05
McGraw, Vincent P.
Optics: measuring and testing
By dispersed light spectroscopy
With monochromator structure
356328, G01J 306
Patent
active
054972310
ABSTRACT:
The monochromator has, as a beam-diffracting element, a scanning mirror (3) which is fastened on a vibratory spring, preferably a spring-steel strap (8), clamped on one side. The vibratory spring is oscillated by way of an electromechanical self-energized oscillation circuit, a sensor (11a, 11b) which detects the deflection of the vibratory spring (8) is provided and whose output signal is used as a feedback signal for maintaining the oscillation of the vibratory spring (8). The amplitude of oscillation of the oscillating element can likewise be varied. With such a design it is possible to produce simply and inexpensively a monochromator with which a considerable spectral range can be swept and, in addition, the width and position of said spectral range can be variably adjusted.
REFERENCES:
patent: 2630736 (1953-03-01), Beitz
patent: 4225233 (1980-09-01), Ogan
patent: 4752129 (1988-06-01), Izumi et al.
patent: 5303165 (1994-04-01), Ganz et al.
Lowy et al "Vibrating Mirror Multiple-line display" IBM Tech. Disc. Bulletin, vol. 19 No. 5, p. 1775, Oct. 1976.
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