CA2578830A1 - Illuminating lens designed by extrinsic differential geometry - Google Patents

Illuminating lens designed by extrinsic differential geometry Download PDF

Info

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
Application number
CA002578830A
Other languages
French (fr)
Other versions
CA2578830C (en
Inventor
William A. Parkyn, Jr.
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.)
Teledyne Lighting and Display Products 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 US08/935,774 external-priority patent/US5924788A/en
Application filed by Individual filed Critical Individual
Publication of CA2578830A1 publication Critical patent/CA2578830A1/en
Application granted granted Critical
Publication of CA2578830C publication Critical patent/CA2578830C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
CA002578830A 1997-09-23 1998-09-18 Illuminating lens designed by extrinsic differential geometry Expired - Fee Related CA2578830C (en)

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)

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