Reflector and a method of generating a reflector shape
OwnerTetsuhiro Kanoinventor
Life of this patent
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Abstract
A reflector for radiation disseminated by a radiation source is of a shape with which the reflector curve of intersection in a plane including an axis (A) of the reflector and the radiation source comprises segments (S1-A1, A2-B2) of different conics whose merging is edge-free. These conic segments are joined directly and the tangents at the point of contact (A1,A2) of two joined conic segments are alike. A method of generating such a reflector is indicated as well.
Claims16
A reflector for radiation disseminated by a radiation source, said reflector having a reflector curve of intersection in a plane having a first axis comprising a plurality of adjacent conic segments, each of said plurality of conic segments having at least one end point of contact coupled to an end point of contact of an adjacent one of said plurality of conic segments, each of said plurality of conic segments having a focal point different than the focal point of an adjacent segment, wherein the coupled end points of contact of adjacent ones of said plurality of conic segments have coinciding tangents relative to the first axis in the plane.
A reflector for radiation disseminated by a source, said reflector having a reflector curve of intersection in a plane having a first axis comprising an edge-free surface having a shape which is a product of a distant ratio factor and a plurality of adjacent conic segments, each of said plurality of conic segments having at least one end point of contact coupled to an end point of contact of an adjacent one of said plurality of conic segments, each of said plurality of conic segments having a focal point different than the focal point of an adjacent segment, wherein the coupled end points of contact of adjacent ones of said plurality of conic sections have coinciding tangents relative to the first axis in the plane.
A method of generating a reflector shape having a desired radiation distribution for a reflector curve of intersection in a plane having a first axis, which comprises:
- (a) selecting a conic segment having a determinable radiation distribution in said plane having the first axis;
- (b) determining the radiation distribution of the selected conic segment;
- (c) modifying at least one portion of the selected conic segment of which the determined radiation distribution does not coincide with the desired radiation distribution by replacing each said portion having a determined radiation distribution not coinciding with the desired radiation distribution with an additional corresponding conic segment, said additional corresponding conic segment having at least one end point coupled to an end point on an unreplaced portion of the selected conic segment such that a tangent drawn to the end point of the at least one additional corresponding segment coincides relative to the first axis in the plane with a tangent drawn to the end point of the unreplaced portion of the selected segment, said selected conic segment and said additional corresponding conic segment having different focal points;
- and
- (d) repeating steps (c) and (d) for each modified selected conic segment portion until the radiation distribution of said reflector shape coincides with the desired radiation distribution.
Dependencies are inferred from the claim text.