NL1014980A1 - Display device with liquid crystals and light pipe. - Google Patents

Display device with liquid crystals and light pipe.

Info

Publication number
NL1014980A1
NL1014980A1 NL1014980A NL1014980A NL1014980A1 NL 1014980 A1 NL1014980 A1 NL 1014980A1 NL 1014980 A NL1014980 A NL 1014980A NL 1014980 A NL1014980 A NL 1014980A NL 1014980 A1 NL1014980 A1 NL 1014980A1
Authority
NL
Netherlands
Prior art keywords
display device
liquid crystals
light pipe
crystals
pipe
Prior art date
Application number
NL1014980A
Other languages
Dutch (nl)
Other versions
NL1014980C2 (en
Inventor
Seiji Umemoto
Original Assignee
Nitto Denko Corp
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
Application filed by Nitto Denko Corp filed Critical Nitto Denko Corp
Publication of NL1014980A1 publication Critical patent/NL1014980A1/en
Application granted granted Critical
Publication of NL1014980C2 publication Critical patent/NL1014980C2/en

Links

Classifications

    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Escalators And Moving Walkways (AREA)
  • Liquid Crystal (AREA)
NL1014980A 1999-06-22 2000-04-19 Liquid crystal display device and light pipe. NL1014980C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17569999 1999-06-22
JP17569999A JP4414510B2 (en) 1999-06-22 1999-06-22 Passenger escalator

Publications (2)

Publication Number Publication Date
NL1014980A1 true NL1014980A1 (en) 2000-10-23
NL1014980C2 NL1014980C2 (en) 2002-06-11

Family

ID=16000710

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1014980A NL1014980C2 (en) 1999-06-22 2000-04-19 Liquid crystal display device and light pipe.

Country Status (2)

Country Link
JP (1) JP4414510B2 (en)
NL (1) NL1014980C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4401138B2 (en) 2003-10-10 2010-01-20 東芝エレベータ株式会社 Passenger conveyor
JP2005126204A (en) * 2003-10-24 2005-05-19 Mitsubishi Electric Corp Railing device of man conveyor
JP4619030B2 (en) * 2004-04-06 2011-01-26 東芝エレベータ株式会社 Passenger conveyor
WO2021064934A1 (en) * 2019-10-03 2021-04-08 三菱電機株式会社 Passenger conveyor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2692025B2 (en) * 1992-01-24 1997-12-17 スタンレー電気株式会社 Planar light emitter device
JPH075462A (en) * 1993-06-16 1995-01-10 Dainippon Printing Co Ltd Surface light source, display device using the same, and light diffusion sheet used for the same
JP3012462B2 (en) * 1994-09-26 2000-02-21 富士通株式会社 Light guide plate, surface light source and non-light emitting display device using the same
EP0950851B1 (en) * 1998-04-17 2006-03-01 Nitto Denko Corporation Light conductive plate, surface light source device, and reflection type liquid-crystal display

Also Published As

Publication number Publication date
JP2001002357A (en) 2001-01-09
NL1014980C2 (en) 2002-06-11
JP4414510B2 (en) 2010-02-10

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Legal Events

Date Code Title Description
AD1A A request for search or an international type search has been filed
RD2N Patents in respect of which a decision has been taken or a report has been made (novelty report)

Effective date: 20020206

PD2B A search report has been drawn up
MM Lapsed because of non-payment of the annual fee

Effective date: 20150501