DE4241889A1 - - Google Patents

Info

Publication number
DE4241889A1
DE4241889A1 DE4241889A DE4241889A DE4241889A1 DE 4241889 A1 DE4241889 A1 DE 4241889A1 DE 4241889 A DE4241889 A DE 4241889A DE 4241889 A DE4241889 A DE 4241889A DE 4241889 A1 DE4241889 A1 DE 4241889A1
Authority
DE
Germany
Prior art keywords
lens
steps
vector
exit surface
refraction
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.)
Granted
Application number
DE4241889A
Other languages
German (de)
English (en)
Other versions
DE4241889C2 (de
Inventor
Masahito Ishikawa
Toshimasa Kodera
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.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
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 Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Publication of DE4241889A1 publication Critical patent/DE4241889A1/de
Application granted granted Critical
Publication of DE4241889C2 publication Critical patent/DE4241889C2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/808—Lens mold

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
DE4241889A 1991-12-14 1992-12-11 Leuchtenabdeckung mit optischer Wirkung für eine Fahrzeugbeleuchtungseinrichtung Expired - Fee Related DE4241889C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3352000A JP2700970B2 (ja) 1991-12-14 1991-12-14 車輌用灯具のレンズ及びその金型作製方法

Publications (2)

Publication Number Publication Date
DE4241889A1 true DE4241889A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-06-24
DE4241889C2 DE4241889C2 (de) 1997-03-20

Family

ID=18421094

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4241889A Expired - Fee Related DE4241889C2 (de) 1991-12-14 1992-12-11 Leuchtenabdeckung mit optischer Wirkung für eine Fahrzeugbeleuchtungseinrichtung

Country Status (6)

Country Link
US (1) US5398137A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JP2700970B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE4241889C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES2046146B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2685095B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2262801B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335244A1 (de) * 1993-10-15 1995-06-22 Daimler Benz Ag Anordnung zur Bildaufnahme
DE102006057731B4 (de) * 2005-12-07 2015-10-08 Koito Manufacturing Co., Ltd. Fahrzeugleuchte

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100234257B1 (ko) * 1995-08-30 1999-12-15 윤종용 대물렌즈 장치 및 안정된 포커스 서보 신호를 얻는방법 및 이를 적용한 광픽업 장치 및 두께가 다른 디스크를 판별하는 방법 및 두께가 다른 디스크로부터 정보를 재생하고 기록하는 방법
DE19532680A1 (de) * 1995-09-05 1997-03-06 Telefunken Microelectron Optisches System
DE19647357A1 (de) * 1996-11-15 1998-05-20 Hella Kg Hueck & Co Fahrzeugleuchte
JPH11260104A (ja) * 1998-03-05 1999-09-24 Koito Mfg Co Ltd 車輌用灯具
JP4212902B2 (ja) * 2003-01-07 2009-01-21 大日本印刷株式会社 フレネルレンズ、フレネルレンズ成形型、フレネルレンズ製造方法及びフレネルレンズを用いた透過型スクリーン
JP4293857B2 (ja) * 2003-07-29 2009-07-08 シチズン電子株式会社 フレネルレンズを用いた照明装置
JP4926642B2 (ja) * 2005-12-07 2012-05-09 株式会社小糸製作所 車両用照明灯具
JP4565656B2 (ja) * 2006-02-28 2010-10-20 スタンレー電気株式会社 灯具
US8541724B2 (en) * 2006-09-29 2013-09-24 Lone Star Ip Holdings, Lp Small smart weapon and weapon system employing the same
US7589917B2 (en) * 2007-10-25 2009-09-15 Honeywell International Inc. Collimating fresnel lens with diffuser appearance
CN104516108B (zh) * 2013-09-30 2017-05-10 清华大学 自由曲面成像系统的设计方法
WO2021093669A1 (zh) * 2019-11-11 2021-05-20 苏州欧普照明有限公司 照明装置及照明系统
WO2022024864A1 (ja) * 2020-07-30 2022-02-03 国立大学法人京都大学 レンズ設計方法、レンズ設計装置、コンピュータプログラム及びレンズ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574338A (en) * 1983-10-11 1986-03-04 Nissan Motor Co., Ltd. Light assembly with flexed thermoplastic fresnel lens

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59138050A (ja) * 1983-01-27 1984-08-08 トヨタ自動車株式会社 ランプ構造
IT1211618B (it) * 1987-12-22 1989-11-03 Fiat Auto Spa Fanale retronebbia per autoveicoli
FI895715A0 (fi) * 1988-03-30 1989-11-29 Avtoelektronika Kollimator.
KR910010244B1 (ko) * 1988-04-08 1991-12-24 가부시기가이샤 고이도세이사꾸쇼 프레넬스텝의 가공방법
DE3911443C2 (de) * 1988-04-08 1993-12-02 Koito Mfg Co Ltd Optische Leuchtenabdeckung mit Fresnel-Prismen, deren Verwendung sowie ein Verfahren zu ihrer Herstellung
JPH071687Y2 (ja) * 1988-08-22 1995-01-18 株式会社小糸製作所 車両灯具用レンズ
DE4020081A1 (de) * 1990-06-23 1992-01-02 Bosch Gmbh Robert Fahrzeugleuchte

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574338A (en) * 1983-10-11 1986-03-04 Nissan Motor Co., Ltd. Light assembly with flexed thermoplastic fresnel lens

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4335244A1 (de) * 1993-10-15 1995-06-22 Daimler Benz Ag Anordnung zur Bildaufnahme
DE4335244B4 (de) * 1993-10-15 2006-10-19 Daimlerchrysler Ag Anordnung zur Bildaufnahme
DE102006057731B4 (de) * 2005-12-07 2015-10-08 Koito Manufacturing Co., Ltd. Fahrzeugleuchte

Also Published As

Publication number Publication date
JPH05164906A (ja) 1993-06-29
US5398137A (en) 1995-03-14
DE4241889C2 (de) 1997-03-20
JP2700970B2 (ja) 1998-01-21
FR2685095B1 (fr) 1994-08-12
FR2685095A1 (fr) 1993-06-18
ES2046146R (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1996-01-16
ES2046146A2 (es) 1994-01-16
GB2262801B (en) 1994-12-07
GB2262801A (en) 1993-06-30
GB9226045D0 (en) 1993-02-10
ES2046146B1 (es) 1996-08-01

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee