DE3884994D1 - Erhöht aufgestellte, von der Rückseite beleuchtbare Anzeige. - Google Patents

Erhöht aufgestellte, von der Rückseite beleuchtbare Anzeige.

Info

Publication number
DE3884994D1
DE3884994D1 DE88304110T DE3884994T DE3884994D1 DE 3884994 D1 DE3884994 D1 DE 3884994D1 DE 88304110 T DE88304110 T DE 88304110T DE 3884994 T DE3884994 T DE 3884994T DE 3884994 D1 DE3884994 D1 DE 3884994D1
Authority
DE
Germany
Prior art keywords
illuminated
elevated display
elevated
display
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.)
Expired - Fee Related
Application number
DE88304110T
Other languages
English (en)
Other versions
DE3884994T2 (de
Inventor
John F Dreyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of DE3884994D1 publication Critical patent/DE3884994D1/de
Application granted granted Critical
Publication of DE3884994T2 publication Critical patent/DE3884994T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0409—Arrangements for homogeneous illumination of the display surface, e.g. using a layer having a non-uniform transparency
DE19883884994 1987-05-08 1988-05-06 Erhöht aufgestellte, von der Rückseite beleuchtbare Anzeige. Expired - Fee Related DE3884994T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4764387A 1987-05-08 1987-05-08

Publications (2)

Publication Number Publication Date
DE3884994D1 true DE3884994D1 (de) 1993-11-25
DE3884994T2 DE3884994T2 (de) 1994-05-05

Family

ID=21950121

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883884994 Expired - Fee Related DE3884994T2 (de) 1987-05-08 1988-05-06 Erhöht aufgestellte, von der Rückseite beleuchtbare Anzeige.

Country Status (5)

Country Link
EP (1) EP0290266B1 (de)
JP (1) JPS63293586A (de)
AU (1) AU595999B2 (de)
CA (1) CA1310829C (de)
DE (1) DE3884994T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034864A (en) * 1989-04-25 1991-07-23 Mitsubishi Rayon Co., Ltd. Planar light-source device and illumination apparatus using the same
US4989948A (en) * 1989-05-08 1991-02-05 Minnesota Mining And Manufacturing Company Reflective sheeting material
EP0677160B1 (de) * 1992-12-31 1997-07-16 Minnesota Mining And Manufacturing Company Pfostenleuchte mit programmierbarem ausstrahlungsbereich
DE29714000U1 (de) * 1997-08-06 1997-10-16 Sauernheimer Gmbh Leuchteinrichtung mit einem an einem Mast angeordneten Informationsträger
CN1145553C (zh) * 1998-04-30 2004-04-14 美国3M公司 一种具有漫反射膜的可照亮的标记箱

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1135371A (fr) * 1954-07-15 1957-04-26 Réclame lumineuse à flux lumineux traversant le corps des panneaux publicitaires
JPS5017798A (de) * 1973-06-15 1975-02-25
AU529213B3 (en) * 1982-10-07 1983-05-12 Terence Michael Deegan Illuminated sign support
US4615579A (en) * 1983-08-29 1986-10-07 Canadian Patents & Development Ltd. Prism light guide luminaire
DE3573649D1 (en) * 1984-07-02 1989-11-16 Mitsubishi Rayon Co Light diffuser
CA1288265C (en) * 1986-02-21 1991-09-03 Lorne A. Whitehead Method and apparatus for controlled emission of light from prism light guide

Also Published As

Publication number Publication date
EP0290266A2 (de) 1988-11-09
AU595999B2 (en) 1990-04-12
CA1310829C (en) 1992-12-01
DE3884994T2 (de) 1994-05-05
EP0290266A3 (en) 1990-08-01
AU1562688A (en) 1988-11-10
EP0290266B1 (de) 1993-10-20
JPS63293586A (ja) 1988-11-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee