CA2210575A1 - Light directing optical structure - Google Patents

Light directing optical structure

Info

Publication number
CA2210575A1
CA2210575A1 CA002210575A CA2210575A CA2210575A1 CA 2210575 A1 CA2210575 A1 CA 2210575A1 CA 002210575 A CA002210575 A CA 002210575A CA 2210575 A CA2210575 A CA 2210575A CA 2210575 A1 CA2210575 A1 CA 2210575A1
Authority
CA
Canada
Prior art keywords
light
waveguide
prism
optical structure
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002210575A
Other languages
French (fr)
Other versions
CA2210575C (en
Inventor
Jerry Kuper
Leon Segal
Karl W. Beeson
Scott M. Zimmerman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell International Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/376,709 external-priority patent/US5555329A/en
Application filed by Individual filed Critical Individual
Publication of CA2210575A1 publication Critical patent/CA2210575A1/en
Application granted granted Critical
Publication of CA2210575C publication Critical patent/CA2210575C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Optical Couplings Of Light Guides (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A light directing optical structure is formed of a light waveguide (40) preferably made of clear plastic; attached to or formed with the waveguide are a multiplicity of prisms (42). Each prism (42), due to its index of refraction, provides an aperture where light may escape the waveguide (40) rather than remain confined due to total internal refraction. The light escaping the waveguide (40) is reflected from a side face (32) of the prism (42), and redirected in a desired direction. The propagation paths within the waveguide (40) are such that the light emerging through the aperture is of only a fairly closely constrained range of angles; as a result the light that is redirected by the side face of the prism is of a similarly constrained range of angles. The geometry of the prism (42) can be optimized to direct the output light perpendicular to the plane (33) of the waveguide (40), or at a desired angle other than perpendicular. The optical structure can receive a light input along an edge, or along several edges, and its output beam is perpendicular to the structure or at some desired angle other than perpendicular. There is no restriction on the distribution and uniformity of the light input, yet the output is a directed and intensity controlled light source. Configurations are disclosed adapting the structure to several different possible light distribution patterns.
CA002210575A 1995-01-23 1996-01-19 Light directing optical structure Expired - Fee Related CA2210575C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/376,709 US5555329A (en) 1993-11-05 1995-01-23 Light directing optical structure
US08/376,709 1995-01-23
PCT/US1996/000619 WO1996023166A1 (en) 1995-01-23 1996-01-19 Light directing optical structure

Publications (2)

Publication Number Publication Date
CA2210575A1 true CA2210575A1 (en) 1996-08-01
CA2210575C CA2210575C (en) 2006-06-27

Family

ID=36644837

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002210575A Expired - Fee Related CA2210575C (en) 1995-01-23 1996-01-19 Light directing optical structure

Country Status (1)

Country Link
CA (1) CA2210575C (en)

Also Published As

Publication number Publication date
CA2210575C (en) 2006-06-27

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