Title:
【発明の名称】コンフォーカルな放物線断面を備えた高効率プリズム・ライト・ガイド
Document Type and Number:
Japanese Patent JP3064018
Kind Code:
B2
Abstract:
A hollow light guide with opposed first and second parallel sections having confocal, parabolic cross-sectional shape. The light guide may be a prism light guide, or other hollow light guide such as a metallic mirror light guide or a multi-layer dielectric light guide. The cross-sectional shapes have vertices separated by a distance which does not exceed about three times (preferably, about 2.5 times) the focal length of the shapes.
Inventors:
Whitehead, Lone A.
Application Number:
JP51458897A
Publication Date:
July 12, 2000
Filing Date:
October 10, 1996
Export Citation:
Assignee:
The University of British Columbia
International Classes:
F21V8/00; G02B6/032; G02B6/00; (IPC1-7): G02B6/00; F21V8/00
Domestic Patent References:
| JP63308802A | ||||
| JP51131934A | ||||
| JP62165603A |
Other References:
【文献】米国特許4120565(US,A)
【文献】米国特許5309544(US,A)
【文献】米国特許5339382(US,A)
【文献】米国特許5309544(US,A)
【文献】米国特許5339382(US,A)
Attorney, Agent or Firm:
Hironobu Onda