GB1484475A - Optical projection apparatus - Google Patents

Optical projection apparatus

Info

Publication number
GB1484475A
GB1484475A GB36264/74A GB3626474A GB1484475A GB 1484475 A GB1484475 A GB 1484475A GB 36264/74 A GB36264/74 A GB 36264/74A GB 3626474 A GB3626474 A GB 3626474A GB 1484475 A GB1484475 A GB 1484475A
Authority
GB
United Kingdom
Prior art keywords
conduit
fiche
micro
lamp
aug
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
Application number
GB36264/74A
Other languages
English (en)
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.)
Quantor Corp
Original Assignee
Quantor Corp
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 Quantor Corp filed Critical Quantor Corp
Publication of GB1484475A publication Critical patent/GB1484475A/en
Expired legal-status Critical Current

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
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
GB36264/74A 1973-08-16 1974-08-16 Optical projection apparatus Expired GB1484475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US389049A US3858971A (en) 1973-08-16 1973-08-16 Heat convection cooling system for optical readout and display device

Publications (1)

Publication Number Publication Date
GB1484475A true GB1484475A (en) 1977-09-01

Family

ID=23536611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36264/74A Expired GB1484475A (en) 1973-08-16 1974-08-16 Optical projection apparatus

Country Status (7)

Country Link
US (1) US3858971A (enExample)
JP (1) JPS5083024A (enExample)
BE (1) BE825640Q (enExample)
CA (1) CA1021305A (enExample)
DE (1) DE2439168C2 (enExample)
FR (1) FR2241090B1 (enExample)
GB (1) GB1484475A (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682868A (en) * 1985-05-31 1987-07-28 Constantin Systems, Inc. Thermal management system for an episcopic image projector
US4805420A (en) * 1987-06-22 1989-02-21 Ncr Corporation Cryogenic vessel for cooling electronic components
US6561655B2 (en) * 2000-07-12 2003-05-13 Minolta Co., Ltd. Projector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2277147A (en) * 1939-10-09 1942-03-24 Elwood C Rogers Enlarger
DE893125C (de) * 1941-12-30 1953-10-12 Thomson Houston Comp Francaise Projektions- und Ablesevorrichtung fuer Filme oder Filmbaender mit in sehr kleinem Massstab aufgenommenen und mit blossem Auge nicht erkennbaren Photographien von Dokumenten
US2582876A (en) * 1949-08-18 1952-01-15 Meinig Friedrich Optical projecting precision balance
US2701979A (en) * 1951-07-13 1955-02-15 Verneur E Pratt Unit system reader for cumulative microfilm and the like
DE1180162B (de) * 1961-04-01 1964-10-22 Kindermann & Co Photo Ges M B Lampengehaeuse fuer Bildwerfer mit einer die Waermestrahlen der Lampe abschirmenden Schutzvorrichtung
US3751160A (en) * 1968-03-25 1973-08-07 Reibel R General arrangement for projector
US3593019A (en) * 1970-02-11 1971-07-13 Robert H Reibel Ventilating means for light source for projector

Also Published As

Publication number Publication date
CA1021305A (en) 1977-11-22
FR2241090B1 (enExample) 1981-05-22
JPS5083024A (enExample) 1975-07-04
US3858971A (en) 1975-01-07
BE825640Q (fr) 1975-06-16
AU7239874A (en) 1976-02-19
DE2439168C2 (de) 1985-01-31
DE2439168A1 (de) 1975-02-27
FR2241090A1 (enExample) 1975-03-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee