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US5243506: High aspect ratio light emitter having high uniformity and directionality

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Filing Information

Inventor(s) Lorne A. Whitehead ·
Assignee(s) TIR Systems Ltd. ·
Attorney/Agent(s) Chernoff, Vilhauer, McClung & Stenzel ·
Primary Examiner Ira S. Lazarus ·
Assistant Examiner L. Heyman ·
Application Number US7716684
Filing date 06/17/1991
Issue date 09/07/1993
Predicted expiration date 06/17/2011
U.S. Classifications 362/307  · 362/31  ·
International Classifications F17  ·
Kind CodeA
International Classifications 36232;31;299;300;329 ·
14 Claims, No Drawings


Abstract

A light emitter for emitting partially collimated light in one or more selected directions. The light emitter has a longitudinally specularly reflective internal surface; and, a light emitting area having an inner portion which is both partially longitudinally specular reflective and partially longitudinally transmissive and, a refractive, prismatic outer portion.

Independent Claims | See all claims (14)

  1. 1. A hollow light emitter having a length considerably greater than its minimum cross-sectional dimension for receiving light from a partially collimated light source and emitting said light without substantial loss of collimation from a light emitting area of said emitter in one or more selected directions with substantially uniform light output per unit length along said light emitting area, said light emitter comprising:(a) a longitudinally specularly reflective internal surface;(b) said light emitting area comprising:(i) an inner portion which is:(1) substantially longitudinally specularly reflective; and,(2) longitudinally transmissive; and,(ii) a refractive, prismatic outer portion separated from said inner portion by a gap.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US4335421 MODIA JOSEPH W Modia et al. Jun 1982
US4791540 Minnesota Mining and Manufacturing Company Dreyer, Jr. et al. Dec 1988
US4996632 Gulton Industries, Inc. Aikens Feb 1991
US5016143 Gulton Industries, Inc. Aikens May 1991
US5043850 Minnesota Mining and Manufacturing Company Dreyer, Jr. Aug 1991
US5054885 Minnesota Mining and Manfuacturing Company Melby Oct 1991

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
GB0713529BANKS & CO LTD JAug 1954

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
EP0888566 UNIVERSITY OF BRITISH COLUMBIA Lorne A. WHITEHEAD Jul 2002
US5661839 The University of British Columbia Lorne A. Whitehead Aug 1997
US5901266 The University of British Columbia Lorne A. Whitehead May 1999
US6160948 Thomas H. McGaffigan Dec 2000
US5596429 Sharp Kabushiki Kaisha Shozo Kokawa et al. Jan 1997
US5832164 Kevin D. Miekis Nov 1998
US6031958 Thomas H. McGaffigan Feb 2000
US5845037 Kevin D. Miekis Dec 1998
US6024462 The University of British Columbia Lorne A. Whitehead Feb 2000
US6079844 The University of British Columbia Lorne A. Whitehead et al. Jun 2000
US6481882 3M Innovative Properties Company Stephen J. Pojar Nov 2002
US7513672 Solid State Opto Limited Jeffrey R. Parker Apr 2009
US6337946 Thomas H. McGaffigan Jan 2002
US7524101 Solid State Opto Limited Jeffery R. Parker Apr 2009
USRE37594 The University of British Columbia Lorne A. Whitehead Mar 2002
US7300194 Solid State Opto Limited Jeffery R. Parker Nov 2007
US6809892 3M Innovative Properties Company Kazuhiko Toyooka Oct 2004
US6783269 Koninklijke Philips Electronics N.V. Michael D. Pashley et al. Aug 2004
US7384173 3M Innovative Properties Company Leland R. Whitney Jun 2008
US7591094 The University of British Columbia Lorne A. Whitehead Sep 2009
US7563012 Solid State Opto Limited Jeffery R. Parker Jul 2009
US6443585 Honeywell International Inc. Robert J. Saccomanno Sep 2002
US7404660 Solid State Opto Limited Jeffery R. Parker Jul 2008
US7537370 Solid State Opto Limited Jeffery R. Parker May 2009
US7384177 Solid State Opto Limited Jeffery R. Parker Jun 2008
US7703967 Rambus International Ltd. Jeffery R. Parker Apr 2010
US7736043 Rambus International Ltd. Jeffery R. Parker Jun 2010
US7798695 Rambus International Ltd. Jeffery R. Parker Sep 2010
US7434974 Solid State Opto Limited Jeffery R. Parker Oct 2008
US7963687 Rambus International Ltd. Jeffery R. Parker Jun 2011
US8066405 Jerome H. Simon Nov 2011
US8123393 Rambus International Ltd. Jeffery R. Parker Feb 2012
US8215816 Rambus International Ltd. Jeffery R. Parker Jul 2012
US8142063 Rambus International Ltd. Jeffery R. Parker Mar 2012
US8308334 Rambus International Ltd. Jeffery R. Parker Nov 2012
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