HK190596A - Double-sided grooved fresnel lens for overhead projector - Google Patents

Double-sided grooved fresnel lens for overhead projector

Info

Publication number
HK190596A
HK190596A HK190596A HK190596A HK190596A HK 190596 A HK190596 A HK 190596A HK 190596 A HK190596 A HK 190596A HK 190596 A HK190596 A HK 190596A HK 190596 A HK190596 A HK 190596A
Authority
HK
Hong Kong
Prior art keywords
double
fresnel lens
overhead projector
sided grooved
grooved fresnel
Prior art date
Application number
HK190596A
Other languages
English (en)
Inventor
Dennis F Vanderwerf
Original Assignee
Minnesota Mining & Mfg
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=HK190596(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of HK190596A publication Critical patent/HK190596A/xx

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)
HK190596A 1988-12-16 1996-10-17 Double-sided grooved fresnel lens for overhead projector HK190596A (en)

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
HK190596A true HK190596A (en) 1996-10-25

Family

ID=23094645

Family Applications (1)

Application Number Title Priority Date Filing Date
HK190596A HK190596A (en) 1988-12-16 1996-10-17 Double-sided grooved fresnel lens for overhead projector

Country Status (11)

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

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
US5803568A (en) * 1994-02-16 1998-09-08 Minnesota Mining And Manufacturing Company Dual grooved Fresnel lens for overhead projection
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
ES2238829T3 (es) * 1998-04-22 2005-09-01 Teijin Chemicals, Ltd. Procedimiento de moldeo por inyeccion-compresion destinado a un producto opticamente formado.
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
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
US10254942B2 (en) 2014-07-31 2019-04-09 Microsoft Technology Licensing, Llc Adaptive sizing and positioning of application windows
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
US10018844B2 (en) 2015-02-09 2018-07-10 Microsoft Technology Licensing, Llc Wearable image display system
US9827209B2 (en) 2015-02-09 2017-11-28 Microsoft Technology Licensing, Llc Display system
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
US9535253B2 (en) 2015-02-09 2017-01-03 Microsoft Technology Licensing, Llc Display system
US9423360B1 (en) 2015-02-09 2016-08-23 Microsoft Technology Licensing, Llc Optical components
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
JP7414826B2 (ja) * 2018-12-18 2024-01-16 ルポルド アンド スティーブンズ インコーポレイテッド フレネルレンズを有する照光式レチクルシステム
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 (4)

* 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
JPS5995525A (ja) * 1982-11-24 1984-06-01 Mitsubishi Rayon Co Ltd 背面投影スクリ−ン

Also Published As

Publication number Publication date
YU237989A (sh) 1992-07-20
MY104273A (en) 1994-02-28
EP0375152A2 (en) 1990-06-27
CA2003077A1 (en) 1990-06-16
EP0375152B1 (en) 1995-03-29
ES2070182T3 (es) 1995-06-01
JPH02220001A (ja) 1990-09-03
AU4537789A (en) 1990-06-21
DE68921967T2 (de) 1995-11-09
EP0375152A3 (en) 1991-08-28
DE68921967D1 (de) 1995-05-04
US4900129A (en) 1990-02-13
KR0145724B1 (ko) 1998-10-01
KR900010427A (ko) 1990-07-07
CA2003077C (en) 1997-09-30
AU617557B2 (en) 1991-11-28

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20031116

PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)