SI9420038A - Overhead projector with achromatic fresnel lens - Google Patents

Overhead projector with achromatic fresnel lens Download PDF

Info

Publication number
SI9420038A
SI9420038A SI9420038A SI9420038A SI9420038A SI 9420038 A SI9420038 A SI 9420038A SI 9420038 A SI9420038 A SI 9420038A SI 9420038 A SI9420038 A SI 9420038A SI 9420038 A SI9420038 A SI 9420038A
Authority
SI
Slovenia
Prior art keywords
lens
catadioptric
plane
angle
diopter
Prior art date
Application number
SI9420038A
Other languages
English (en)
Slovenian (sl)
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
Application filed by Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of SI9420038A publication Critical patent/SI9420038A/sl

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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/132—Overhead projectors, i.e. capable of projecting hand-writing or drawing during action
    • 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
    • Y10S353/00—Optics: image projectors
    • Y10S353/03—Transparent
SI9420038A 1993-06-29 1994-05-26 Overhead projector with achromatic fresnel lens SI9420038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/084,513 US5317349A (en) 1993-06-29 1993-06-29 Overhead projector with achromatic fresnel lens

Publications (1)

Publication Number Publication Date
SI9420038A true SI9420038A (en) 1996-06-30

Family

ID=22185424

Family Applications (1)

Application Number Title Priority Date Filing Date
SI9420038A SI9420038A (en) 1993-06-29 1994-05-26 Overhead projector with achromatic fresnel lens

Country Status (10)

Country Link
US (2) US5317349A (fr)
EP (1) EP0706676B1 (fr)
JP (1) JPH08512142A (fr)
KR (1) KR960702911A (fr)
CN (1) CN1056930C (fr)
DE (1) DE69402073T2 (fr)
HK (1) HK1006879A1 (fr)
SI (1) SI9420038A (fr)
TW (1) TW217446B (fr)
WO (1) WO1995001587A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE69509074T2 (de) * 1994-02-16 1999-12-09 Minnesota Mining & Mfg Fresnellinse mit stufen auf beiden seiten fuer overheadprojektion
US5515123A (en) * 1994-02-17 1996-05-07 Minnesota Mining And Manufacturing Company Condensers for illumination systems
JP3409587B2 (ja) * 1996-05-14 2003-05-26 オムロン株式会社 光路変換光学素子、画像表示装置及び光投射器
US5997709A (en) * 1996-05-28 1999-12-07 Minnesota Mining And Manufacturing Co. Method of providing diffuse risers on a fresnel lens die
DE69837591T2 (de) * 1997-12-16 2007-12-27 KURARAY CO., LTD, Kurashiki Rückprojektionsschirm mit einem Prisma
JP2001337206A (ja) * 2000-05-26 2001-12-07 Toppan Printing Co Ltd フレネルレンズ
US6914723B2 (en) * 2001-11-09 2005-07-05 Xradia, Inc. Reflective lithography mask inspection tool based on achromatic Fresnel optics
US6917472B1 (en) * 2001-11-09 2005-07-12 Xradia, Inc. Achromatic fresnel optics for ultraviolet and x-ray radiation
JP2008512700A (ja) * 2004-09-07 2008-04-24 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ フレネル構造を有する光学素子
US20070091452A1 (en) * 2005-10-25 2007-04-26 Scott Lerner Projection system and method
JP4743607B2 (ja) * 2005-12-22 2011-08-10 株式会社ニコン フレネルレンズ、および、このフレネルレンズを用いた液晶プロジェクタ
JP5827104B2 (ja) * 2010-11-19 2015-12-02 株式会社半導体エネルギー研究所 照明装置
CN102183823A (zh) * 2011-05-10 2011-09-14 南京邮电大学 一种光纤准直器
JP5192067B2 (ja) * 2011-09-09 2013-05-08 シャープ株式会社 フレネルレンズ
USD744155S1 (en) * 2014-05-28 2015-11-24 Osram Sylvania Inc. Lens
US11588137B2 (en) 2019-06-05 2023-02-21 Semiconductor Energy Laboratory Co., Ltd. Functional panel, display device, input/output device, and data processing device
US11659758B2 (en) 2019-07-05 2023-05-23 Semiconductor Energy Laboratory Co., Ltd. Display unit, display module, and electronic device
JPWO2021009587A1 (fr) 2019-07-12 2021-01-21

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003804A (en) * 1932-07-21 1935-06-04 Gen Motors Corp Lens
JPS51933Y1 (fr) * 1969-06-17 1976-01-12
US3712713A (en) * 1970-08-10 1973-01-23 Minnesota Mining & Mfg Optical shield of transparant intermeshed grooved panels useful on overhead projects
US4118114A (en) * 1974-08-21 1978-10-03 Minnesota Mining And Manufacturing Company Low-glare overhead projector
US3982822A (en) * 1975-03-03 1976-09-28 Minnesota Mining And Manufacturing Company Composite Fresnel lens assembly
US4108540A (en) * 1976-06-17 1978-08-22 Minnesota Mining And Manufacturing Company Refractor-reflector radiation concentrator
US4118761A (en) * 1977-02-28 1978-10-03 Bausch & Lomb Incorporated Light condensing illuminator
JPS5560934A (en) * 1978-10-31 1980-05-08 Gakken Co Ltd Color band removing focus adjusting method in overhead projector
US4337759A (en) * 1979-10-10 1982-07-06 John M. Popovich Radiant energy concentration by optical total internal reflection
US4436392A (en) * 1983-01-03 1984-03-13 Minnesota Mining And Manufacturing Company Distortion correction for an overhead projector system
US4436393A (en) * 1983-01-03 1984-03-13 Minnesota Mining And Manufacturing Company Distortion correction for an overhead projector system
DE3519506A1 (de) * 1985-05-31 1986-12-04 Demolux Gmbh & Co Kg, 6070 Langen Overhead-projektor
US4755921A (en) * 1986-04-02 1988-07-05 Minnesota Mining And Manufacturing Company Lens
US4741613A (en) * 1986-12-19 1988-05-03 Minnesota Mining And Manufacturing Company Reduced height transmissive overhead projector
US4859043A (en) * 1987-05-07 1989-08-22 Cibie Projecteurs High efficiency signal light, in particular for a motor vehicle
DE3728191C1 (de) * 1987-08-24 1989-02-23 Medium Vertriebsgesellschaft F Durchlicht-Schreibprojektor
US5161057A (en) * 1988-09-12 1992-11-03 Johnson Kenneth C Dispersion-compensated fresnel lens
US5208620A (en) * 1988-10-04 1993-05-04 Canon Kabushiki Kaisha Display apparatus
US4900129A (en) * 1988-12-16 1990-02-13 Minnesota Mining And Manufacturing Company Dual grooved Fresnel lens for overhead projection
US5097395A (en) * 1989-02-24 1992-03-17 Minnesota Mining And Manufacturing Company Multiple cavity light fixture
US4969733A (en) * 1989-10-02 1990-11-13 Dukane Corporation Foldable portable overhead projector
EP0422661A3 (en) * 1989-10-13 1992-07-01 Mitsubishi Rayon Co., Ltd Polarization forming optical device and polarization beam splitter
US5150966A (en) * 1990-09-19 1992-09-29 Minnesota Mining And Manufacturing Company Uniform intensity profile catadioptric lens
GB9108033D0 (en) * 1991-04-16 1991-06-05 Britax Vega Ltd Vehicle lamp
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

Also Published As

Publication number Publication date
CN1126521A (zh) 1996-07-10
TW217446B (en) 1993-12-11
DE69402073T2 (de) 1997-10-09
DE69402073D1 (de) 1997-04-17
US5453880A (en) 1995-09-26
WO1995001587A1 (fr) 1995-01-12
US5317349A (en) 1994-05-31
CN1056930C (zh) 2000-09-27
KR960702911A (ko) 1996-05-23
EP0706676A1 (fr) 1996-04-17
JPH08512142A (ja) 1996-12-17
HK1006879A1 (en) 1999-03-19
EP0706676B1 (fr) 1997-03-12

Similar Documents

Publication Publication Date Title
SI9420038A (en) Overhead projector with achromatic fresnel lens
SI9300670A (en) Overhead projector with catadioptric fresnel lens
US4991063A (en) Photographic flash apparatus
JP3586291B2 (ja) スポーツ照明器具
US6102554A (en) Apparatus for modifying a light beam
US3492070A (en) Illuminating system for a copying apparatus
US5590943A (en) Rear projection type image display apparatus and transmission type screen used therein
US20060245184A1 (en) Iris diffuser for adjusting light beam properties
CN101114041B (zh) 用于投影仪的投影透镜和投影仪
JP2004326129A (ja) 照明装置および投写型表示装置
EP1167868A2 (fr) Projecteur de lumière, notamment pour projeter des faisceaux de lumière à dimensions et couleurs variables
US20090153807A1 (en) Image projector
JP2006259027A (ja) 光源装置及び投写型表示装置
CA1330894C (fr) Retroprojecteur transmissif de hauteur reduite
EP1879068B1 (fr) Caisson diffuseur pour un usage photographique
US8021714B2 (en) Front-projection screen with subsurface diffusion targets
US5971568A (en) Optical device and multisurface reflector
US3920323A (en) Apparatus for projecting an object
JPH03252604A (ja) 光学フィルタおよびこれを用いた光照射装置
US3492069A (en) Slide projector
CA1258842A (fr) Lanterne a reflecteur orientable
CA1089265A (fr) Visionneuse de microdocuments
JP3609854B2 (ja) 光ファイバーを有する照明装置
SI9420015A (en) Condensers for overhead projectors
CN220913491U (zh) 单片式液晶投影光机及液晶投影仪