ATE2287T1 - Projektor. - Google Patents

Projektor.

Info

Publication number
ATE2287T1
ATE2287T1 AT80900072T AT80900072T ATE2287T1 AT E2287 T1 ATE2287 T1 AT E2287T1 AT 80900072 T AT80900072 T AT 80900072T AT 80900072 T AT80900072 T AT 80900072T AT E2287 T1 ATE2287 T1 AT E2287T1
Authority
AT
Austria
Prior art keywords
light
pct
laid out
covering
sec
Prior art date
Application number
AT80900072T
Other languages
English (en)
Inventor
Ulf Jan Erik Asteroe
Original Assignee
Asthausbolagen Hb Asteroe & Stockhaus
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
Priority claimed from SE7812542A external-priority patent/SE414085B/sv
Application filed by Asthausbolagen Hb Asteroe & Stockhaus filed Critical Asthausbolagen Hb Asteroe & Stockhaus
Application granted granted Critical
Publication of ATE2287T1 publication Critical patent/ATE2287T1/de

Links

Classifications

    • 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
    • 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
    • G03B21/08—Projectors or projection-type viewers; Accessories therefor affording epidiascopic projection
    • 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
    • Y10S353/04—Opaque

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Projection Apparatus (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
AT80900072T 1978-12-06 1979-12-06 Projektor. ATE2287T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7812542A SE414085B (sv) 1978-10-04 1978-12-06 Projektor

Publications (1)

Publication Number Publication Date
ATE2287T1 true ATE2287T1 (de) 1983-02-15

Family

ID=20336542

Family Applications (1)

Application Number Title Priority Date Filing Date
AT80900072T ATE2287T1 (de) 1978-12-06 1979-12-06 Projektor.

Country Status (7)

Country Link
US (1) US4343538A (de)
EP (1) EP0026177B1 (de)
JP (1) JPS55501071A (de)
AT (1) ATE2287T1 (de)
DE (1) DE2964575D1 (de)
SU (1) SU1153846A3 (de)
WO (1) WO1980001210A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561740A (en) * 1984-06-06 1985-12-31 Minnesota Mining And Manufacturing Company Dual-magnification rear projection lectern
US4644934A (en) * 1985-05-03 1987-02-24 Kaus David P Solar energy heating system
US5033842A (en) * 1990-02-13 1991-07-23 Tam Kam T Episcopic projector
CN1034531C (zh) * 1992-08-03 1997-04-09 吴有边 一种增光式投影、放映装置
US5695267A (en) * 1996-09-30 1997-12-09 Predebon; Roberto Photo viewing assembly
CN106842510B (zh) * 2017-03-30 2019-06-25 明基智能科技（上海）有限公司 投影系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1176485A (en) * 1912-07-31 1916-03-21 Spencer Lens Co Projection apparatus.
GB191403544A (en) * 1914-02-11 1915-07-29 Raphael Eduard Liesegang Improvements relating to Optical Projection Apparatus.
US2596393A (en) * 1949-05-23 1952-05-13 Gerald Harold G Fitz Attachment for opaque projection by transparency projectors
US3482911A (en) * 1967-03-20 1969-12-09 William A Noble Image projection apparatus
US3525566A (en) * 1968-07-24 1970-08-25 Gerald Altman Projection devices and graphic materials therefor
DE2453767A1 (de) * 1974-11-13 1976-05-20 Michael Ing Grad Meyer Dualvisuelles projektionsgeraet, kombiniert aus dia- und schreibprojektor
DE2815036A1 (de) * 1978-04-07 1979-10-18 Wesegang Fa Ed Schreibprojektor

Also Published As

Publication number Publication date
US4343538A (en) 1982-08-10
JPS55501071A (de) 1980-12-04
WO1980001210A1 (en) 1980-06-12
EP0026177A1 (de) 1981-04-08
EP0026177B1 (de) 1983-01-19
SU1153846A3 (ru) 1985-04-30
DE2964575D1 (en) 1983-02-24

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee