ES2070182T3 - Lentes de fresnel ranuradas por las dos caras para proyector aereo. - Google Patents

Lentes de fresnel ranuradas por las dos caras para proyector aereo.

Info

Publication number
ES2070182T3
ES2070182T3 ES89311880T ES89311880T ES2070182T3 ES 2070182 T3 ES2070182 T3 ES 2070182T3 ES 89311880 T ES89311880 T ES 89311880T ES 89311880 T ES89311880 T ES 89311880T ES 2070182 T3 ES2070182 T3 ES 2070182T3
Authority
ES
Spain
Prior art keywords
slotted
sides
fresnel lenses
air projector
fresnel
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 - Lifetime
Application number
ES89311880T
Other languages
English (en)
Inventor
Dennis F C O Minnes Vanderwerf
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=23094645&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2070182(T3) "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
Application granted granted Critical
Publication of ES2070182T3 publication Critical patent/ES2070182T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Lenses (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Endoscopes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

ESTA INVENCION CONSISTE EN UNA LENTE FRESNEL (10), QUE TIENE ENTALLADURAS (12, 14) DE CONVERGENCIA FOCAL EN AMBOS LADOS DE UN UNICO ELEMENTO. LAS FRECUENCIAS RELATIVAS DE LAS SUPERFICIES RANURADAS SE CONTROLAN EN FORMA TAL QUE SE REDUCEN LOS PATRONES DE INTERFERENCIA MOIRE ENTRE LAS DOS SUPERFICIES RANURADAS (12, 14). ESPECIFICAMENTE, LA FRECUENCIA DE LOS ELEMENTOS FRESNEL (12) SOBRE UNA SUPERFICIE DEL MISMO, ES, POR LO MENOS, CUATRO VECES LA DE LOS ELEMENTOS FRESNEL (14) SOBRE LA OTRA SUPERFICIE, Y NO UN MULTIPLO ENTERO DE LOS MISMOS.
ES89311880T 1988-12-16 1989-11-16 Lentes de fresnel ranuradas por las dos caras para proyector aereo. Expired - Lifetime ES2070182T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/285,531 US4900129A (en) 1988-12-16 1988-12-16 Dual grooved Fresnel lens for overhead projection

Publications (1)

Publication Number Publication Date
ES2070182T3 true ES2070182T3 (es) 1995-06-01

Family

ID=23094645

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89311880T Expired - Lifetime ES2070182T3 (es) 1988-12-16 1989-11-16 Lentes de fresnel ranuradas por las dos caras para proyector aereo.

Country Status (11)

Country Link
US (1) US4900129A (es)
EP (1) EP0375152B1 (es)
JP (1) JPH02220001A (es)
KR (1) KR0145724B1 (es)
AU (1) AU617557B2 (es)
CA (1) CA2003077C (es)
DE (1) DE68921967T2 (es)
ES (1) ES2070182T3 (es)
HK (1) HK190596A (es)
MY (1) MY104273A (es)
YU (1) YU237989A (es)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02153328A (ja) * 1988-12-05 1990-06-13 Sumitomo Electric Ind Ltd 光源装置
US5296882A (en) * 1992-12-21 1994-03-22 Minnesota Mining And Manufacturing Company Overhead projector with catadioptric fresnel lens
US5317349A (en) * 1993-06-29 1994-05-31 Minnesota Mining And Manufacturing Company Overhead projector with achromatic fresnel lens
KR100342724B1 (ko) * 1994-02-16 2002-12-05 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 오버헤드프로젝션용이중그루브프레넬렌즈
WO1995025288A1 (de) * 1994-03-17 1995-09-21 Bifocon Optics Forschungs- Und Entwicklungsgmbh Zonenlinse
US6778326B1 (en) * 1995-03-29 2004-08-17 Eastman Kodak Company Combined heat filter and condenser lens, a projection type apparatus using such, and a method for fabricating it
WO1999054112A1 (en) * 1998-04-22 1999-10-28 Teijin Chemicals, Ltd. Injection compression molding method for optically formed product
US7009789B1 (en) 2000-02-22 2006-03-07 Mems Optical, Inc. Optical device, system and method
EP1639398B9 (en) 2003-06-30 2012-02-22 Werner Fiala Intra-ocular lens or contact lens exhibiting large depth of focus
US7690814B2 (en) * 2005-03-10 2010-04-06 Honeywell International Inc. Luminaire with a one-sided diffuser
US10074683B2 (en) 2013-08-23 2018-09-11 Semiconductor Components Industries, Llc Imaging systems having lens substrates with total internal reflection mitigation structures
US10254942B2 (en) 2014-07-31 2019-04-09 Microsoft Technology Licensing, Llc Adaptive sizing and positioning of application windows
US10592080B2 (en) 2014-07-31 2020-03-17 Microsoft Technology Licensing, Llc Assisted presentation of application windows
US10678412B2 (en) 2014-07-31 2020-06-09 Microsoft Technology Licensing, Llc Dynamic joint dividers for application windows
US10317677B2 (en) 2015-02-09 2019-06-11 Microsoft Technology Licensing, Llc Display system
US9429692B1 (en) 2015-02-09 2016-08-30 Microsoft Technology Licensing, Llc Optical components
US9423360B1 (en) 2015-02-09 2016-08-23 Microsoft Technology Licensing, Llc Optical components
US9827209B2 (en) 2015-02-09 2017-11-28 Microsoft Technology Licensing, Llc Display system
US9535253B2 (en) 2015-02-09 2017-01-03 Microsoft Technology Licensing, Llc Display system
US10018844B2 (en) 2015-02-09 2018-07-10 Microsoft Technology Licensing, Llc Wearable image display system
US11086216B2 (en) 2015-02-09 2021-08-10 Microsoft Technology Licensing, Llc Generating electronic components
US9513480B2 (en) 2015-02-09 2016-12-06 Microsoft Technology Licensing, Llc Waveguide
US10215890B2 (en) 2016-05-18 2019-02-26 Google Llc Optical field curvature control using multi-layer Fresnel lens in VR display
DE102016109647B4 (de) 2016-05-25 2022-08-25 OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung Linse und Leuchte mit einer solchen Linse
CN106772718B (zh) * 2017-01-16 2018-11-02 广州弥德科技有限公司 菲涅尔透镜及具有该菲涅尔透镜的显示装置
WO2020132106A1 (en) * 2018-12-18 2020-06-25 Leupold & Stevens, Inc. Illuminated reticle system with fresnel lens
DE102020006276A1 (de) 2020-10-13 2022-04-14 Helge Moritz Regenbogen-Fresnel-Prisma Dispersives, flaches Element zur Erzeugung eines künstlichen und gebogenen Regenbogens
JP2023139896A (ja) * 2022-03-22 2023-10-04 ソニーグループ株式会社 レンズ系及び画像表示装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972593A (en) * 1974-07-01 1976-08-03 Minnesota Mining And Manufacturing Company Louvered echelon lens
US4044889A (en) * 1976-09-13 1977-08-30 Seymour Orentreich Cosmetic container including integrated lens structure
JPS57109618A (en) * 1980-12-27 1982-07-08 Dainippon Printing Co Ltd Both faces fresnel lens and its manufacture

Also Published As

Publication number Publication date
EP0375152A2 (en) 1990-06-27
EP0375152B1 (en) 1995-03-29
KR900010427A (ko) 1990-07-07
EP0375152A3 (en) 1991-08-28
AU4537789A (en) 1990-06-21
CA2003077A1 (en) 1990-06-16
CA2003077C (en) 1997-09-30
YU237989A (sh) 1992-07-20
AU617557B2 (en) 1991-11-28
DE68921967T2 (de) 1995-11-09
US4900129A (en) 1990-02-13
KR0145724B1 (ko) 1998-10-01
HK190596A (en) 1996-10-25
MY104273A (en) 1994-02-28
JPH02220001A (ja) 1990-09-03
DE68921967D1 (de) 1995-05-04

Similar Documents

Publication Publication Date Title
ES2070182T3 (es) Lentes de fresnel ranuradas por las dos caras para proyector aereo.
ES525703A0 (es) Procedimiento para la polimerizacion de una composicion por medio de radiacion actinica
ES528148A0 (es) Un procedimiento para fabricar un adhesivo
FI834159L (fi) Aluminium-n-fosfonometylglycin och dess anvaendning som herbicid.
FI834404A0 (fi) Betongtillsatsmedel, som omfattar en flerkomponentblandning, innehaollande silikadamm, framstaellningsfoerfarande och resulterande betongprodukt
FI834184L (fi) Vaexelriktare med en belastningskrets som innehaoller en serieresonanskrets och en urladdningslampa.
DK373188A (da) Fremgangsmaade til opretning af fotomaskiner, navnlig foto-litografiske masker paa flade arbejdsstykker
FI842587A7 (fi) Foerfarande och anordning foer tillverk- ning av saodana aedelmetallfoeremaol som inte framkallar allergier.
DE3466292D1 (en) Single collimator lens having one aspherical surface
FI831590L (fi) Azolylmetyloxiraner, deras framstaellning och anvaendning som laekemedel
IT8348095A0 (it) Apparecchio emettitore di radiazioni ottiche modulate, in particolare faro a luce lampeggiante
MX9101488A (es) Configuracion mejorada de fuente de plasma para implantacion de iones
FI834709A0 (fi) Substituerade fenylsulfonyloxibenzimidazolkarbamater, foerfarande foer deras framstaellning och deranvaendning som laekemedel
IT1147598B (it) Perfezionamento nei giroscopi a laser,in particolare nei dispositivi assorbitori di riflessioni delle on de elettromagnetiche
ES517684A0 (es) Perfeccionamientos en los aparatos para el centraje de las lentes de gafas y para la sujecion de una pieza de fijacion en las lentes.
ES497184A0 (es) Perfeccionamientos en los sistemas de fijacion de una lampa-ra sobre el reflector de un faro
DK155696C (da) Fremstilling af kontaktlinser
ES519352A0 (es) Un procedimiento para la fabricacion de un papel base fotografico.
MX9102577A (es) Metodo de configuracion de frecuencia para minimizar la severidad del impacto de los sistemas de suspension.
ES545191A0 (es) Un procedimiento para separar los antipodas opticos de 1-pi-ridil-alquil-4-aril-piperazinas
BR8301895A (pt) Camara de ar e dispositivo para a fabricacao da mesma
ES521294A0 (es) Procedimiento para la fabricacion de llaves planas de perfil simetrico con dos superficies de mando de guarda yuxtapuestas en cada una de las dos caras estrechas.
FI832627L (fi) 7 -acyltio-15,16-metylen-3-oxo-17 -pregna-1,4-dien-21,17-karbolaktoner, foerfarande foer deras framstaellning och anvaendning som laekemedel
FI833770L (fi) Organiska foereningar och deras anvaendning som laekemedel
ES525516A0 (es) Procedimiento para la produccion de un laser semiconductor

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 375152

Country of ref document: ES