The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 2005
Filed:
Feb. 26, 2004
Ying Hung LI, Kowloon, CN;
Ashley Min Hang Pun, Kowloon, CN;
Chi Choy Wong, Kowloon, CN;
Sin Wing Chan, Kowloon, CN;
Derek Chi Hang Louie, Kowloon, CN;
LI Man LI, Kowloon, CN;
Ying Hung Li, Kowloon, CN;
Ashley Min Hang Pun, Kowloon, CN;
Chi Choy Wong, Kowloon, CN;
Sin Wing Chan, Kowloon, CN;
Derek Chi Hang Louie, Kowloon, CN;
Li Man Li, Kowloon, CN;
World Hint Limited, Kowloon, CN;
Abstract
An illumination system employs a light distribution cylinder with an exterior surface in the form of a plurality of progressively smaller-diameter cylindrical steps. The outside surface of each cylindrical step is interrupted by V-shaped grooves perpendicular to the axis of the cylinder. Each surface of these V-shaped grooves acts to internally reflect divergent light from a light source positioned at the end of the tube. The light distribution cylinders may be solid or hollow and configured with bilateral symmetry to receive light from either end. The illumination system rearranges divergent directional light from a light source into non-directional light emitted in a cylindrical pattern useful for area illumination.