WO2001040708A3 - Light guide system with reflective optical mask - Google Patents

Light guide system with reflective optical mask

Info

Publication number
WO2001040708A3
WO2001040708A3 PCT/US2000/029964 US0029964W WO2001040708A3 WO 2001040708 A3 WO2001040708 A3 WO 2001040708A3 US 0029964 W US0029964 W US 0029964W WO 2001040708 A3 WO2001040708 A3 WO 2001040708A3
Authority
WO
Grant status
Application
Patent type
Prior art keywords
layer
material
light
side
reflecting
Prior art date
Application number
PCT/US2000/029964
Other languages
French (fr)
Other versions
WO2001040708A2 (en )
Inventor
Richard C Allen
Elisa M Cross
Original Assignee
3M Innovative Properties Co
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

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055Reflecting element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0056Means for improving the coupling-out of light from the light guide for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements

Abstract

A light guide assembly includes a layer of material having the property of transmitting a portion of electromagnetic radiation entering the layer of material. The layer of material includes an edge portion, with an optical mask covering at least part of the edge portion. The mask has a reflecting side for reflecting the entering electromagnetic radiation so as to reduce bright areas when the layer of material is viewed from the side opposite the reflecting side and to recycle light resulting from the bright areas.
PCT/US2000/029964 1999-12-02 2000-10-31 Light guide system with reflective optical mask WO2001040708A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US45271099 true 1999-12-02 1999-12-02
US09/452,710 1999-12-02

Publications (2)

Publication Number Publication Date
WO2001040708A2 true WO2001040708A2 (en) 2001-06-07
WO2001040708A3 true true WO2001040708A3 (en) 2001-08-16

Family

ID=23797606

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/029964 WO2001040708A3 (en) 1999-12-02 2000-10-31 Light guide system with reflective optical mask

Country Status (1)

Country Link
WO (1) WO2001040708A3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9709700B2 (en) 2005-04-06 2017-07-18 3M Innovative Properties Company Optical bodies including rough strippable boundary layers
KR101253379B1 (en) 2005-04-06 2013-04-11 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Optical Bodies Including Rough Strippable Boundary Layers and Asymmetric Surface Structures
KR20080077363A (en) 2005-12-14 2008-08-22 코닌클리케 필립스 일렉트로닉스 엔.브이. Reflective display having improved brightness and contrast
CN101688990B (en) 2007-04-06 2012-12-05 爱利亚有限责任公司 Reflective display panel and method for manufacturing such a display panel
EP2213987A1 (en) 2009-02-03 2010-08-04 Leica Geosystems AG Opto-electronic position measurement apparatus and opto-electronic position measurement method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62278506A (en) * 1986-05-27 1987-12-03 Dainippon Printing Co Ltd Plane light source
US4775222A (en) * 1984-08-27 1988-10-04 Mitsubishi Rayon Company Ltd. Light diffusing device
US5055978A (en) * 1989-12-29 1991-10-08 Gte Products Corporation Uniform light source
US5207493A (en) * 1990-07-03 1993-05-04 Kabushiki Kaisha Meitaku Shisutemu Edge light panel device
JPH10123332A (en) * 1996-10-17 1998-05-15 Enplas Corp Side light type surface light source device
JPH11149254A (en) * 1997-11-18 1999-06-02 Seiko Epson Corp Reflecting member, and liquid crystal display containing it

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775222A (en) * 1984-08-27 1988-10-04 Mitsubishi Rayon Company Ltd. Light diffusing device
JPS62278506A (en) * 1986-05-27 1987-12-03 Dainippon Printing Co Ltd Plane light source
US5055978A (en) * 1989-12-29 1991-10-08 Gte Products Corporation Uniform light source
US5207493A (en) * 1990-07-03 1993-05-04 Kabushiki Kaisha Meitaku Shisutemu Edge light panel device
JPH10123332A (en) * 1996-10-17 1998-05-15 Enplas Corp Side light type surface light source device
US6079840A (en) * 1996-10-17 2000-06-27 Enplas Corporation Surface light source device having shielding layer
JPH11149254A (en) * 1997-11-18 1999-06-02 Seiko Epson Corp Reflecting member, and liquid crystal display containing it

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 163 (P - 703) 18 May 1988 (1988-05-18) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30) *

Also Published As

Publication number Publication date Type
WO2001040708A2 (en) 2001-06-07 application

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