CA2250312A1 - Illumination system comprising microprisms with blocking means - Google Patents
Illumination system comprising microprisms with blocking meansInfo
- Publication number
- CA2250312A1 CA2250312A1 CA002250312A CA2250312A CA2250312A1 CA 2250312 A1 CA2250312 A1 CA 2250312A1 CA 002250312 A CA002250312 A CA 002250312A CA 2250312 A CA2250312 A CA 2250312A CA 2250312 A1 CA2250312 A1 CA 2250312A1
- Authority
- CA
- Canada
- Prior art keywords
- microprisms
- illumination system
- light output
- light
- blocking means
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
- F21V5/005—Refractors for light sources using microoptical elements for redirecting or diffusing light using microprisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0091—Reflectors for light sources using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
- F21V11/14—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures with many small apertures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/101—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening permanently, e.g. welding, gluing or riveting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
- F21Y2103/37—U-shaped
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133504—Diffusing, scattering, diffracting elements
- G02F1/133507—Films for enhancing the luminance
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The light output of a back-coupled illumination system is improved by recycling reflected and misdirected light rays. A reflector (150) at the light source (112) and an array of microprisms (122) having reflective elements (160) therebetween efficiently redirect errant light rays to increase the total available light output and improve efficiency. Both specular and diffuse reflective materials may be used in combination to enhance light output.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/622,131 US5839823A (en) | 1996-03-26 | 1996-03-26 | Back-coupled illumination system with light recycling |
US08/622,131 | 1996-03-26 | ||
PCT/US1997/004621 WO1997036131A1 (en) | 1996-03-26 | 1997-03-21 | Illumination system comprising microprisms with blocking means |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2250312A1 true CA2250312A1 (en) | 1997-10-02 |
CA2250312C CA2250312C (en) | 2004-10-12 |
Family
ID=24493060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002250312A Expired - Fee Related CA2250312C (en) | 1996-03-26 | 1997-03-21 | Illumination system comprising microprisms with blocking means |
Country Status (12)
Country | Link |
---|---|
US (1) | US5839823A (en) |
EP (1) | EP0890060B1 (en) |
JP (1) | JP2000507736A (en) |
CN (1) | CN1083079C (en) |
AT (1) | ATE209768T1 (en) |
CA (1) | CA2250312C (en) |
DE (1) | DE69708615T2 (en) |
DK (1) | DK0890060T3 (en) |
ES (1) | ES2169374T3 (en) |
PT (1) | PT890060E (en) |
TW (1) | TW419572B (en) |
WO (1) | WO1997036131A1 (en) |
Families Citing this family (116)
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DE19923226A1 (en) | 1999-05-20 | 2000-11-23 | Zumtobel Staff Gmbh | Optical element for deflection of light beams entering into this and exiting again from it so that exit angle of light beams is limited has micro-prism surfaces designed as convex or concave |
DE19923225B4 (en) | 1999-05-20 | 2009-10-22 | Zumtobel Staff Gmbh | Optical element for deflecting light rays and manufacturing processes |
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AU2000226369B2 (en) * | 2000-02-02 | 2006-01-19 | Brilliant Film, Llc | Multiflecting light directing film |
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-
1996
- 1996-03-26 US US08/622,131 patent/US5839823A/en not_active Expired - Fee Related
-
1997
- 1997-03-20 TW TW086103510A patent/TW419572B/en not_active IP Right Cessation
- 1997-03-21 CN CN97194941A patent/CN1083079C/en not_active Expired - Fee Related
- 1997-03-21 CA CA002250312A patent/CA2250312C/en not_active Expired - Fee Related
- 1997-03-21 EP EP97916914A patent/EP0890060B1/en not_active Expired - Lifetime
- 1997-03-21 DK DK97916914T patent/DK0890060T3/en active
- 1997-03-21 ES ES97916914T patent/ES2169374T3/en not_active Expired - Lifetime
- 1997-03-21 DE DE69708615T patent/DE69708615T2/en not_active Expired - Lifetime
- 1997-03-21 WO PCT/US1997/004621 patent/WO1997036131A1/en active IP Right Grant
- 1997-03-21 JP JP9534508A patent/JP2000507736A/en active Pending
- 1997-03-21 AT AT97916914T patent/ATE209768T1/en active
- 1997-03-21 PT PT97916914T patent/PT890060E/en unknown
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JP2000507736A (en) | 2000-06-20 |
CA2250312C (en) | 2004-10-12 |
CN1220002A (en) | 1999-06-16 |
PT890060E (en) | 2002-04-29 |
US5839823A (en) | 1998-11-24 |
DK0890060T3 (en) | 2002-02-18 |
ES2169374T3 (en) | 2002-07-01 |
CN1083079C (en) | 2002-04-17 |
EP0890060B1 (en) | 2001-11-28 |
TW419572B (en) | 2001-01-21 |
EP0890060A1 (en) | 1999-01-13 |
ATE209768T1 (en) | 2001-12-15 |
DE69708615D1 (en) | 2002-01-10 |
WO1997036131A1 (en) | 1997-10-02 |
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