DE69022870D1 - Retroreflektierende Gegenstände mit lichtdurchlässigen Oberflächen. - Google Patents

Retroreflektierende Gegenstände mit lichtdurchlässigen Oberflächen.

Info

Publication number
DE69022870D1
DE69022870D1 DE69022870T DE69022870T DE69022870D1 DE 69022870 D1 DE69022870 D1 DE 69022870D1 DE 69022870 T DE69022870 T DE 69022870T DE 69022870 T DE69022870 T DE 69022870T DE 69022870 D1 DE69022870 D1 DE 69022870D1
Authority
DE
Germany
Prior art keywords
elements
cube
retroreflective
corners
curved
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
DE69022870T
Other languages
English (en)
Other versions
DE69022870T2 (de
Inventor
Gerald M Benson
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23294950&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69022870(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of DE69022870D1 publication Critical patent/DE69022870D1/de
Application granted granted Critical
Publication of DE69022870T2 publication Critical patent/DE69022870T2/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
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
    • G02B5/124—Reflex reflectors cube corner, trihedral or triple reflector type plural reflecting elements forming part of a unitary plate or sheet
DE69022870T 1989-03-31 1990-03-02 Retroreflektierende Gegenstände mit lichtdurchlässigen Oberflächen. Expired - Fee Related DE69022870T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/331,689 US5122902A (en) 1989-03-31 1989-03-31 Retroreflective articles having light-transmissive surfaces

Publications (2)

Publication Number Publication Date
DE69022870D1 true DE69022870D1 (de) 1995-11-16
DE69022870T2 DE69022870T2 (de) 1996-05-23

Family

ID=23294950

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69022870T Expired - Fee Related DE69022870T2 (de) 1989-03-31 1990-03-02 Retroreflektierende Gegenstände mit lichtdurchlässigen Oberflächen.

Country Status (8)

Country Link
US (1) US5122902A (de)
EP (1) EP0390344B1 (de)
JP (1) JP3046607B2 (de)
KR (1) KR0185673B1 (de)
AT (1) ATE129077T1 (de)
AU (1) AU616100B2 (de)
CA (1) CA2010201C (de)
DE (1) DE69022870T2 (de)

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US6045230A (en) * 1998-02-05 2000-04-04 3M Innovative Properties Company Modulating retroreflective article
US6282026B1 (en) 1998-02-05 2001-08-28 3M Innovative Properties Company Retroreflectors having two optical surfaces and varying retroreflectivity
US6280822B1 (en) * 1999-01-11 2001-08-28 3M Innovative Properties Company Cube corner cavity based retroeflectors with transparent fill material
US6287670B1 (en) 1999-01-11 2001-09-11 3M Innovative Properties Company Cube corner cavity based retroreflectors and methods for making same
US6540367B1 (en) 1999-04-07 2003-04-01 3M Innovative Properties Company Structured surface articles containing geometric structures with compound faces and methods for making same
US6524675B1 (en) 1999-05-13 2003-02-25 3M Innovative Properties Company Adhesive-back articles
KR20010018578A (ko) * 1999-08-20 2001-03-05 성재갑 입사광을 부분 내부 전반사시키는 변형 큐브코너 재귀반사체 및 그 제조방법
KR100373209B1 (ko) 1999-09-11 2003-02-25 주식회사 엘지화학 재귀 반사체
CA2384709A1 (en) 1999-10-04 2001-04-12 3M Innovative Properties Company Improved continuous process for making glittering cube corner sheeting
JP3975039B2 (ja) 1999-12-13 2007-09-12 日本カーバイド工業株式会社 三角錐型キューブコーナー再帰反射素子
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US8728610B2 (en) * 2000-02-25 2014-05-20 3M Innovative Properties Company Compound mold and structured surface articles containing geometric structures with compound faces and method of making same
US6325515B1 (en) 2000-03-21 2001-12-04 3M Innovative Properties Company Cube corner retroreflective article with enhanced pigmentation
JP4028155B2 (ja) * 2000-04-11 2007-12-26 日本カーバイド工業株式会社 蛍光性再帰反射シート
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US7695180B2 (en) * 2005-08-27 2010-04-13 3M Innovative Properties Company Illumination assembly and system
US20070047228A1 (en) * 2005-08-27 2007-03-01 3M Innovative Properties Company Methods of forming direct-lit backlights having light recycling cavity with concave transflector
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Also Published As

Publication number Publication date
ATE129077T1 (de) 1995-10-15
AU616100B2 (en) 1991-10-17
AU4977590A (en) 1990-10-04
DE69022870T2 (de) 1996-05-23
CA2010201A1 (en) 1990-09-30
KR900014904A (ko) 1990-10-25
US5122902A (en) 1992-06-16
JPH02285301A (ja) 1990-11-22
KR0185673B1 (ko) 1999-05-15
EP0390344A3 (de) 1991-01-09
JP3046607B2 (ja) 2000-05-29
CA2010201C (en) 2000-11-07
EP0390344B1 (de) 1995-10-11
EP0390344A2 (de) 1990-10-03

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