Crystalline colloidal narrow band radiation filter

Details Crystalline colloidal narrow band radiation filter Crystalline colloidal narrow band radiation filter

1983-12-08

1986-12-09

Corbin, John K.

Optics: measuring and testing

Range or remote distance finding

With photodetection

35016224, 35016217, 356334, G02B 2600, G02B 518

Patent

active

046276890

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.

REFERENCES:
patent: 4078856 (1978-03-01), Thompson et al.
patent: 4261653 (1981-04-01), Goodrich
patent: 4453805 (1984-06-01), Ashkin et al.

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