WO2012138595A2 - Light duct tee splitter - Google Patents
Light duct tee splitter Download PDFInfo
- Publication number
- WO2012138595A2 WO2012138595A2 PCT/US2012/031800 US2012031800W WO2012138595A2 WO 2012138595 A2 WO2012138595 A2 WO 2012138595A2 US 2012031800 W US2012031800 W US 2012031800W WO 2012138595 A2 WO2012138595 A2 WO 2012138595A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- propagation direction
- conduit
- duct splitter
- diverter
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/14—Beam splitting or combining systems operating by reflection only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S11/00—Non-electric lighting devices or systems using daylight
- F21S11/007—Non-electric lighting devices or systems using daylight characterised by the means for transmitting light into the interior of a building
-
- 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
- F21V7/10—Construction
- F21V7/16—Construction with provision for adjusting the curvature
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0018—Redirecting means on the surface of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0096—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the lights guides being of the hollow type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2817—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using reflective elements to split or combine optical signals
-
- 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
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
Definitions
- the disclosure generally relates to highly efficient light duct light splitters that are capable of splitting the light propagating within a light duct into two different ducts, with nearly 100 percent efficiency.
- the described light splitters are configured in a "Tee" shape with a reflective splitter element.
- the present disclosure provides a light duct splitter that includes a first light conduit defining a light transport cavity capable of transporting light along a first propagation direction, a second light conduit defining a first light diversion cavity, and a third light conduit defining a second light diversion cavity, the second and the third light conduit intersecting the first light conduit such that the light transport cavity and the first and the second light diversion cavities are contiguous.
- FIGS. 2A-2C show cross-sectional schematics of light paths through a light duct splitter.
- FIG. 2B shows a first through a seventh boundary first rays 244a, 244b, 244c, 244d, 244e, 244f, 244g, that are propagating at the collimation angle ⁇ to the first propagation direction 242 of first light conduit 210.
- Each of the first through fourth boundary first rays 244a-244d intercept light diverter 270 along first reflector 230 and are reflected to become first through fourth boundary second rays 254a-254d propagating at the collimation angle ⁇ to second propagation direction 252.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112013025872A BR112013025872A2 (en) | 2011-04-08 | 2012-04-02 | lighting duct splitter |
US14/009,556 US9360676B2 (en) | 2011-04-08 | 2012-04-02 | Light duct tee splitter |
SG2013075155A SG194443A1 (en) | 2011-04-08 | 2012-04-02 | Light duct tee splitter |
EP12768585.7A EP2694865A4 (en) | 2011-04-08 | 2012-04-02 | Light duct tee splitter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161473225P | 2011-04-08 | 2011-04-08 | |
US61/473,225 | 2011-04-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2012138595A2 true WO2012138595A2 (en) | 2012-10-11 |
WO2012138595A3 WO2012138595A3 (en) | 2013-01-10 |
Family
ID=46969762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2012/031800 WO2012138595A2 (en) | 2011-04-08 | 2012-04-02 | Light duct tee splitter |
Country Status (6)
Country | Link |
---|---|
US (1) | US9360676B2 (en) |
EP (1) | EP2694865A4 (en) |
BR (1) | BR112013025872A2 (en) |
SG (1) | SG194443A1 (en) |
TW (1) | TWI542903B (en) |
WO (1) | WO2012138595A2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014168823A1 (en) | 2013-04-11 | 2014-10-16 | 3M Innovative Properties Company | Illuminated light duct joint |
US9353930B2 (en) | 2011-04-08 | 2016-05-31 | 3M Innovative Properties Company | Light duct tee extractor |
US9605831B2 (en) | 2012-03-12 | 2017-03-28 | 3M Innovative Properties Company | Light duct homogenizer |
US9683718B2 (en) | 2015-03-12 | 2017-06-20 | 3M Innovative Properties Company | Light duct elbow for ducted illumination |
US9719673B2 (en) | 2012-05-02 | 2017-08-01 | 3M Innovative Properties Company | Rack mounted light |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20150080919A (en) * | 2012-10-30 | 2015-07-10 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | Curved light duct extraction |
CN103775884A (en) * | 2014-01-30 | 2014-05-07 | 上海战古电子科技有限公司 | LED (light emitting diode) adaptive lighting device with etched grooves |
US10411447B1 (en) * | 2018-04-18 | 2019-09-10 | Steed Hammond Paul, Inc. | System for electronic doorframe |
US10855064B2 (en) * | 2018-04-18 | 2020-12-01 | Tadpole Products, Llc | System for electronic doorframe |
US11384591B2 (en) * | 2018-04-18 | 2022-07-12 | Tadpole Products, Llc | System for electronic doorframe |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US247229A (en) | 1880-12-10 | 1881-09-20 | Apparatus for lighting dwellings or other structures | |
US1837091A (en) | 1930-04-26 | 1931-12-15 | Wayne W Adams | Lighting system |
US4152752A (en) | 1977-09-06 | 1979-05-01 | Niemi Gary A | Illumination system and apparatus therefor |
US4302069A (en) * | 1977-09-06 | 1981-11-24 | Niemi Gary A | Illumination system and apparatus therefor |
US4411490A (en) | 1980-08-18 | 1983-10-25 | Maurice Daniel | Apparatus for collecting, distributing and utilizing solar radiation |
FR2667404B1 (en) * | 1990-09-28 | 1992-10-30 | Thomson Csf | DEVICE FOR GENERATING MULTIPLE LIGHT BEAMS. |
JPH0864019A (en) * | 1994-08-24 | 1996-03-08 | Sanyo Electric Co Ltd | Daylighting installation |
DE19543180C2 (en) | 1995-11-20 | 1998-04-30 | Ltg Lufttechnische Gmbh | Method and device for directing / distributing air and light |
CH690788A5 (en) * | 1996-06-14 | 2001-01-15 | Heliobus Ag | Light deflection arrangement has plane intersecting cylinder that runs practically tangential to upper base surface of cylinder, intersects lower base surface of cylinder |
JPH10241430A (en) * | 1996-12-27 | 1998-09-11 | Toshiba Lighting & Technol Corp | Light receptacle system and illumination system |
JPH1125726A (en) * | 1997-06-30 | 1999-01-29 | Toshiba Lighting & Technol Corp | Light guide apparatus and illuminating system |
FR2776049B1 (en) | 1998-03-13 | 2000-08-04 | Olivier Caillaud | PROJECTOR FOR DIFFUSING A CONTROLLED FLOW AND ENERGY MODEL |
JP3885374B2 (en) | 1998-07-28 | 2007-02-21 | 松下電工株式会社 | Light guide bend structure |
DE19936187A1 (en) | 1999-07-31 | 2001-02-01 | Daimler Chrysler Ag | Optical waveguide light deflection device, especially for mirror-facet type waveguides, has end faces of waveguides inclined at given angle to respective longitudinal axis to avoid loss of reflection component |
US7113684B1 (en) * | 2005-06-15 | 2006-09-26 | The Boeing Company | Hex tube light homogenizer splitter |
JP2007115417A (en) * | 2005-10-18 | 2007-05-10 | Nikken Sekkei Ltd | Light carrying device |
JP2008287920A (en) | 2007-05-15 | 2008-11-27 | Asahi Kasei Homes Kk | Optical duct device which has level branch duct |
WO2010078418A1 (en) * | 2008-12-30 | 2010-07-08 | 3M Innovative Properties Company | Lighting assembly |
US8098434B1 (en) | 2010-09-22 | 2012-01-17 | 3M Innovative Properties Company | Optical decollimator for daylighting systems |
US9353930B2 (en) | 2011-04-08 | 2016-05-31 | 3M Innovative Properties Company | Light duct tee extractor |
-
2012
- 2012-04-02 US US14/009,556 patent/US9360676B2/en not_active Expired - Fee Related
- 2012-04-02 SG SG2013075155A patent/SG194443A1/en unknown
- 2012-04-02 BR BR112013025872A patent/BR112013025872A2/en not_active Application Discontinuation
- 2012-04-02 WO PCT/US2012/031800 patent/WO2012138595A2/en active Application Filing
- 2012-04-02 EP EP12768585.7A patent/EP2694865A4/en not_active Withdrawn
- 2012-04-06 TW TW101112378A patent/TWI542903B/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of EP2694865A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9353930B2 (en) | 2011-04-08 | 2016-05-31 | 3M Innovative Properties Company | Light duct tee extractor |
US9605831B2 (en) | 2012-03-12 | 2017-03-28 | 3M Innovative Properties Company | Light duct homogenizer |
US9719673B2 (en) | 2012-05-02 | 2017-08-01 | 3M Innovative Properties Company | Rack mounted light |
WO2014168823A1 (en) | 2013-04-11 | 2014-10-16 | 3M Innovative Properties Company | Illuminated light duct joint |
US9464773B2 (en) | 2013-04-11 | 2016-10-11 | 3M Innovative Properties Company | Illuminated light duct joint |
US9683718B2 (en) | 2015-03-12 | 2017-06-20 | 3M Innovative Properties Company | Light duct elbow for ducted illumination |
Also Published As
Publication number | Publication date |
---|---|
US9360676B2 (en) | 2016-06-07 |
TWI542903B (en) | 2016-07-21 |
EP2694865A4 (en) | 2014-09-03 |
TW201245766A (en) | 2012-11-16 |
SG194443A1 (en) | 2013-12-30 |
US20140016205A1 (en) | 2014-01-16 |
BR112013025872A2 (en) | 2016-12-20 |
WO2012138595A3 (en) | 2013-01-10 |
EP2694865A2 (en) | 2014-02-12 |
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