Back to results
US 4,729,655 AGranted
Device for shaping the angular response of a light meter or the angular emission of a light source
AssigneeChromadyne Corporation
InventorsRichard D. Boggy, Eric G. Marason
Life of this patent
Estimating the term…
Abstract
A fiber optic (12) and correcting element (18) combination with the property of providing shaped angular response when used in conjunction with a radiometer, and of providing shaped angular emission when used in conjunction with a light source.
Claims18
A light modifying device capable of shaping the angular response of a radiometer or shaping the angular emission pattern of a light source comprising
- (a) an optical fiber bundle, said fiber bundle having the property of spreading light ray bundles of different input angles into uniform output cones of light with cone angles equal to the respective input angles of said light ray bundles;
- and
- (b) a correcting element, said correcting element having light transmitting and light blocking regions such that said light blocking region block desired fractions of (1) said output cones of light in the case of the radiometer, or of (2) said light ray bundles of different input angles in the case of the light source.
A light measurement device of shaped angular response comprising
- (a) an optical fiber bundle, said fiber bundle having the property of spreading light ray bundles of different input angles into uniform output cones of light with cone angles equal to the respective input angles of said light ray bundles;
- (b) a correcting element, said correcting element having light transmitting and light blocking regions such that said light blocking region block desired fractions of each of said output cones of light;
- (c) a photodetector to receive the light transmitted by said optical fiber bundle and said correcting element;
- and
- (d) a meter to provide a numerical output of the amount of light received by said photodetector.
2 more elements
A light source of a shaped angular emission pattern comprising
- (a) an optical fiber bundle, said fiber bundle having the property of spreading light ray bundles of different input cone angles into uniform output cones of light of cone angles equal to the respective input cone angles of said light ray bundles;
- (b) a correcting element, said correcting element having light transmitting and light blocking regions such that said light blocking region block desired fractions of each of the input cones of light;
- (c) a light source focussed through said correcting element and onto the input face of said fiber bundle.
Dependencies are inferred from the claim text.