Apparatus for controlling the reflectance of an object surface

Details Apparatus for controlling the reflectance of an object surface Apparatus for controlling the reflectance of an object surface

1995-02-07

1996-10-22

Ben, Loha

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359290, 359848, 359849, G02B 2600

Patent

active

055683070

ABSTRACT:
A reflectance modulator (10) includes a reflective plate (16) with a plurality of slots (18) forming a slot matrix of square portions (20). Side wall plates (22) are each slidingly received within a slot (18) forming a plurality of black body cavities (24) facing incoming radiation. Actuators (28) support the reflective plate (16) with respect to an object surface (12) and are energizable to modify the spacing of plate (16) from the surface (12) changing depth of the cavities (24) and reflectance of radiation.

REFERENCES:
patent: 3463572 (1969-08-01), Preston, Jr.
patent: 3507737 (1970-04-01), Busdiecker et al.
patent: 3644022 (1972-02-01), Jagdt et al.
patent: 3904274 (1975-09-01), Feinleib et al.
patent: 4035061 (1977-07-01), Sheridon
patent: 4466700 (1984-08-01), Christiansen et al.
patent: 5076700 (1991-12-01), DeCaprio

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