Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1984-06-21
1986-12-30
Arnold, Bruce Y.
Optics: measuring and testing
Range or remote distance finding
With photodetection
35016217, 35016224, 356303, 356334, G02B 2600, G02B 518, G01J 344
Patent
active
046325174
ABSTRACT:
A narrow wavelength band filtering device is provided by forming a highly ordered crystalline colloidal structure within a cell. The crystalline colloidal structure is relatively thin and has substantially planar and substantially parallel surface portions. The crystalline colloidal structure is formed by dispersing electrically charged particles, e.g., polystyrene spheres, within an appropriate solvent.
The filtering device of the present invention may form the basis for a mechanically simple and highly efficient monochromator, as well as find application in an improved system for investigating the Raman and/or emission spectra of selected sample materials. In addition, a novel multiple wavelength atomic absortion or emission spectograph is provided utilizing the filter device of the present invention.
REFERENCES:
patent: 3341274 (1967-09-01), Marks
patent: 3664742 (1972-05-01), Witte et al.
patent: 4078856 (1978-03-01), Thompson et al.
patent: 4261653 (1981-04-01), Goodrich
patent: 4365156 (1982-12-01), Gulovchenko et al.
patent: 4451412 (1984-05-01), Loiseaux et al.
patent: 4453805 (1984-06-01), Ashkin et al.
Arnold Bruce Y.
University of Pittsburgh
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