IT1255835B - Dispositivo indicatore illuminato in controluce e procedimento per la realizzazione di un film diffusore per tale dispositivo indicatore - Google Patents

Dispositivo indicatore illuminato in controluce e procedimento per la realizzazione di un film diffusore per tale dispositivo indicatore

Info

Publication number
IT1255835B
IT1255835B ITMI922220A ITMI922220A IT1255835B IT 1255835 B IT1255835 B IT 1255835B IT MI922220 A ITMI922220 A IT MI922220A IT MI922220 A ITMI922220 A IT MI922220A IT 1255835 B IT1255835 B IT 1255835B
Authority
IT
Italy
Prior art keywords
indicator device
indicator
unit
illuminated
diffuser film
Prior art date
Application number
ITMI922220A
Other languages
English (en)
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 filed Critical
Publication of ITMI922220A0 publication Critical patent/ITMI922220A0/it
Publication of ITMI922220A1 publication Critical patent/ITMI922220A1/it
Application granted granted Critical
Publication of IT1255835B publication Critical patent/IT1255835B/it

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
    • G02B6/005—Means 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
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

L'invenzione si riferisce ad un dispositivo indicatore illuminato in controluce, con un involucro (1), un'unità indicatrice (unità indicatrice a cristalli liquidi) rivolta verso l'osservatore, un'unità di deflessione della luce disposta a valle dell'unità indicatrice (4) e coprente in piano la stessa (4), ed almeno una sorgente luminosa (tubo fluorescente 9) che illumina posteriormente l'unità di deflessione della luce. L'unità di deflessione della luce è costituita da un film diffusore trasparente (6) fotografico, il cui strato fotografico (8) è illuminato di striscio da ogni sorgente luminosa (tubo fluorescente 9), tipo illuminazione a campo oscuro, e presenta corpi diffusori prodotti fotograficamente, la distribuzione della densità dei quali ha un andamento inverso della distribuzione dell'intensità luminosa sulla superficie del film diffusore (6).
ITMI922220A 1991-10-28 1992-09-25 Dispositivo indicatore illuminato in controluce e procedimento per la realizzazione di un film diffusore per tale dispositivo indicatore IT1255835B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4135506A DE4135506C2 (de) 1991-10-28 1991-10-28 Hintergrundbeleuchtete Anzeigevorrichtung und Verfahren zur Herstellung einer Streufolie für eine solche Anzeigevorrichtung

Publications (3)

Publication Number Publication Date
ITMI922220A0 ITMI922220A0 (it) 1992-09-25
ITMI922220A1 ITMI922220A1 (it) 1994-03-25
IT1255835B true IT1255835B (it) 1995-11-17

Family

ID=6443588

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI922220A IT1255835B (it) 1991-10-28 1992-09-25 Dispositivo indicatore illuminato in controluce e procedimento per la realizzazione di un film diffusore per tale dispositivo indicatore

Country Status (7)

Country Link
JP (1) JPH0675223A (it)
CH (1) CH686463A5 (it)
DE (1) DE4135506C2 (it)
FR (1) FR2683071A1 (it)
GB (1) GB2261100B (it)
IT (1) IT1255835B (it)
SE (1) SE9202761L (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287553A (en) * 1994-03-10 1995-09-20 Sharp Kk A method of manufacturing a diffuser
DE19536825A1 (de) * 1995-09-20 1997-03-27 Dsd Dynamisch Statische Displa Lichtsteuer-Anzeigevorrichtung für transflektiven Betrieb
DE10250675A1 (de) * 2002-10-31 2004-05-19 Hella Kg Hueck & Co. Anzeigeneinheit, isbesondere für Kraftfahrzeuge
JP2004221254A (ja) * 2003-01-14 2004-08-05 Ran Technical Service Kk 基板の貼り合わせ装置及び貼り合わせ方法
DE202005005306U1 (de) * 2005-04-04 2006-08-10 Aeg Gesellschaft für Moderne Informationssysteme mbH Flüssigkristallanzeigeeinrichtung sowie Flüssigkristallanzeigeanordnung mit einer Mehrzahl von solchen Flüssigkristallanzeigeeinrichtungen
JP7079333B2 (ja) * 2018-01-10 2022-06-01 コーニンクレッカ フィリップス エヌ ヴェ レーザ強化された光学素子

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206501A (en) * 1978-06-12 1980-06-03 Motorola, Inc. Apparatus and methods for back illuminating a display surface
US4267489A (en) * 1978-12-01 1981-05-12 Ohno Research And Development Laboratories Company Limited Thin schaukasten
DE2951207A1 (de) * 1978-12-26 1980-07-10 Canon Kk Verfahren zur optischen herstellung einer streuplatte
US4229783A (en) * 1979-03-12 1980-10-21 Timex Corporation Backlight for electrooptic display
DE2946235C3 (de) * 1979-11-16 1982-04-08 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Verfahren zur Erzeugung einer Belichtungsmaske zur Herstellung von mattstreuenden Strukturen neben opaken und/oder transparenten Strukturen
DE3145127C3 (de) * 1981-03-13 1996-08-01 Bosch Gmbh Robert Verfahren zur Herstellung einer Folie für eine Vorrichtung zur gradientenfreien Ausleuchtung von passiven Anzeigevorrichtungen
US4616295A (en) * 1984-07-03 1986-10-07 Hewlett-Packard Company Apparatus for mounting and illuminating liquid crystal displays
JPS63309918A (ja) * 1988-04-25 1988-12-19 Tatsuji Mizobe バックライト装置
JP2595067B2 (ja) * 1988-08-18 1997-03-26 東ソー株式会社 液晶パネル用バックライト
JP2620981B2 (ja) * 1989-09-30 1997-06-18 株式会社 明拓システム 液晶バックライト用エッジライトパネル
JP3086325B2 (ja) * 1992-05-26 2000-09-11 沖電気工業株式会社 電界効果トランジスタのｉ−ｖ特性の測定方法

Also Published As

Publication number Publication date
JPH0675223A (ja) 1994-03-18
SE9202761L (sv) 1993-04-29
GB9220928D0 (en) 1992-11-18
GB2261100B (en) 1995-10-04
DE4135506A1 (de) 1993-04-29
GB2261100A (en) 1993-05-05
FR2683071A1 (fr) 1993-04-30
DE4135506C2 (de) 1994-06-16
FR2683071B1 (it) 1995-01-27
SE9202761D0 (sv) 1992-09-24
ITMI922220A0 (it) 1992-09-25
ITMI922220A1 (it) 1994-03-25
CH686463A5 (de) 1996-03-29

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970930