CA2578830A1 - Illuminating lens designed by extrinsic differential geometry - Google Patents
Illuminating lens designed by extrinsic differential geometry Download PDFInfo
- Publication number
- CA2578830A1 CA2578830A1 CA002578830A CA2578830A CA2578830A1 CA 2578830 A1 CA2578830 A1 CA 2578830A1 CA 002578830 A CA002578830 A CA 002578830A CA 2578830 A CA2578830 A CA 2578830A CA 2578830 A1 CA2578830 A1 CA 2578830A1
- Authority
- CA
- Canada
- Prior art keywords
- grid
- zones
- flux
- source
- lens
- 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
Abstract
An illumination system with a prescribed output pattern comprising a light source and an optical lens redirecting the light of the source into an output beam, the lens with multiple surfaces (100, 130, 120) at least one of which has shape that is not a surface of revolution, the shape generated by the following method: the Gaussian sphere establishes a first grid (100) of equal-flux zones of solid angle; a second grid (130) with the same number of equal-flux zones of solid angles as the first grid, with a coordinate-system topology congruent with that of the first grid, such that the zones of the second grid are in one-to-one correspondence with the zones of the first grid (100), according to the local transmittance of the lens, with either of both of the grids being rotationally non-symmetric; by this correspondence define a flux- redistributing directional mapping function from the first Gaussian sphere to the second Gaussian sphere, whereby any light ray from the source can be assigned a direction in the output beam, according to the zone of the second grid (130) into which the ray falls, so that the redirected ray falls in corresponding zone of the first grid.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/935,774 US5924788A (en) | 1997-09-23 | 1997-09-23 | Illuminating lens designed by extrinsic differential geometry |
US08/935,774 | 1997-09-23 | ||
CA002303007A CA2303007C (en) | 1997-09-23 | 1998-09-18 | Illuminating lens designed by extrinsic differential geometry |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002303007A Division CA2303007C (en) | 1997-09-23 | 1998-09-18 | Illuminating lens designed by extrinsic differential geometry |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2578830A1 true CA2578830A1 (en) | 1999-04-01 |
CA2578830C CA2578830C (en) | 2009-05-26 |
Family
ID=38051282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002578830A Expired - Fee Related CA2578830C (en) | 1997-09-23 | 1998-09-18 | Illuminating lens designed by extrinsic differential geometry |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2578830C (en) |
-
1998
- 1998-09-18 CA CA002578830A patent/CA2578830C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2578830C (en) | 2009-05-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2303007A1 (en) | Illuminating lens designed by extrinsic differential geometry | |
US6273596B1 (en) | Illuminating lens designed by extrinsic differential geometry | |
US6988820B2 (en) | Method and a device for illumination | |
US20040105262A1 (en) | LED light source with reflecting side wall | |
TW315023U (en) | Marker apparatus | |
WO1999050596A3 (en) | Illumination device for generating non-symmetric light beam, optical lens array and optical lens | |
EP1008801A3 (en) | A projection-type automobile light | |
CA2341388A1 (en) | Vehicle light assembly with diffuser structure | |
CA2131062A1 (en) | Variable Light Modifier | |
CA1120016A (en) | Apparatus for reflecting and controlling radiant energy | |
JP5173792B2 (en) | Lighting apparatus and lighting panel for lighting apparatus | |
EP0649125A1 (en) | Device for preventing pseudo lighting phenomenon of signal lamp | |
WO1999056157A3 (en) | Optical system with anti-reflection coating | |
GB2077410A (en) | Luminous display installation with an increased contrast effect | |
CA1244693A (en) | Light diverting and switching device | |
CA2578830A1 (en) | Illuminating lens designed by extrinsic differential geometry | |
US5863115A (en) | Decorative illumination system | |
CN101629693B (en) | Light distribution board having gratings with multiple focuses | |
AU2010220362A1 (en) | Indirect lighting system | |
SE8403074D0 (en) | LIGHT DISTRIBUTING LENS | |
US5765943A (en) | Multi-port projector improving the uniformity of the illuminated field | |
US20100053981A1 (en) | Light distribution board having multiple light gratings each with many arciform lenses | |
CN101175224B (en) | Method and system for implementing solid video picture in air | |
JPH0620242Y2 (en) | Indicator light | |
CN213712959U (en) | Compact projection type LED car lamp |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |