CA2210575A1 - Light directing optical structure - Google Patents
Light directing optical structureInfo
- 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
Links
- 230000003287 optical effect Effects 0.000 title abstract 3
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.
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) |
-
1996
- 1996-01-19 CA CA002210575A patent/CA2210575C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2210575C (en) | 2006-06-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4615579A (en) | Prism light guide luminaire | |
US4750798A (en) | Prism light guide luminaire | |
CA2026834C (en) | Light fixture with beam shaping lens | |
MY113843A (en) | Illumination system employing an array of microprisms | |
AU4759096A (en) | Light directing optical structure | |
CA2200441A1 (en) | Hollow light guide for diffuse light | |
KR20010095136A (en) | Light guide plate, surface light source device and display device | |
KR870007583A (en) | Total internal reflection waveguide | |
TW373083B (en) | Reflective coupling array for optical waveguide | |
CA2322326A1 (en) | A lenticular illumination system | |
JPS6410105A (en) | Exposure device | |
CA2171786A1 (en) | Electromagnetic energy directing method and apparatus | |
CA2047146A1 (en) | Uniform intensity profile catadioptric lens | |
CA2144076A1 (en) | Electric field sensor having sensor head with unbalanced electric field shield to shield branched optical waveguides against an applied electric field | |
CA2057084A1 (en) | Light irradiating apparatus having light emitting diode used as light source | |
KR870008206A (en) | Method and apparatus for controlled emission of light from prism light guide | |
CA2210575A1 (en) | Light directing optical structure | |
FR2344269A1 (en) | Human eye light coagulator appts. - has light conductive cable from laser source connected to housing between mask and lens | |
CN209784582U (en) | Asymmetric light distribution illumination optical system and illumination device | |
JPS5379553A (en) | Light distributor | |
JPS5512905A (en) | Multichannel low-loss light-wave divider | |
JPS6449930A (en) | Multiple reflection cell | |
TH22594A (en) | "Optical direction control system structure" | |
JPS5784425A (en) | Optical device | |
JPS5785017A (en) | Optical distributor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |