AT331534B - Projektionseinrichtung mit vorrichtungen zum selbsttatigen scharfeinstellen - Google Patents

Projektionseinrichtung mit vorrichtungen zum selbsttatigen scharfeinstellen

Info

Publication number
AT331534B
AT331534B AT768971A AT768971A AT331534B AT 331534 B AT331534 B AT 331534B AT 768971 A AT768971 A AT 768971A AT 768971 A AT768971 A AT 768971A AT 331534 B AT331534 B AT 331534B
Authority
AT
Austria
Prior art keywords
focusing
acting
self
devices
projection device
Prior art date
Application number
AT768971A
Other languages
English (en)
Other versions
ATA768971A (de
Inventor
O Szymber
N Shim
Original Assignee
Gaf 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 Gaf Corp filed Critical Gaf Corp
Publication of ATA768971A publication Critical patent/ATA768971A/de
Application granted granted Critical
Publication of AT331534B publication Critical patent/AT331534B/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
    • G03B21/14—Details
    • G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Projection Apparatus (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
AT768971A 1970-09-14 1971-09-03 Projektionseinrichtung mit vorrichtungen zum selbsttatigen scharfeinstellen AT331534B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7207670A 1970-09-14 1970-09-14

Publications (2)

Publication Number Publication Date
ATA768971A ATA768971A (de) 1975-11-15
AT331534B true AT331534B (de) 1976-08-25

Family

ID=22105406

Family Applications (1)

Application Number Title Priority Date Filing Date
AT768971A AT331534B (de) 1970-09-14 1971-09-03 Projektionseinrichtung mit vorrichtungen zum selbsttatigen scharfeinstellen

Country Status (15)

Country Link
US (1) US3672757A (de)
JP (1) JPS5142940B1 (de)
AT (1) AT331534B (de)
BE (1) BE772530A (de)
BR (1) BR7105990D0 (de)
CA (1) CA962099A (de)
CH (1) CH530020A (de)
DE (1) DE2145729C3 (de)
ES (1) ES395045A1 (de)
FR (1) FR2107602A5 (de)
GB (1) GB1357581A (de)
IL (1) IL37636A (de)
NL (1) NL7112544A (de)
SE (1) SE375386B (de)
ZA (1) ZA716108B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135794A (en) * 1975-05-12 1979-01-23 Addressograph-Multigraph Corporation Photocomposition machine
US4215922A (en) * 1978-11-01 1980-08-05 Am International, Inc. Method for projecting characters at a selected point size in a photocomposition machine
US4415244A (en) * 1982-03-22 1983-11-15 Telex Communications, Inc. Automatic focusing system
DE3310601C2 (de) * 1982-03-24 1994-02-10 Canon Kk Entfernungsmeßvorrichtung
EP0605053B1 (de) * 1992-12-28 1997-11-19 Koninklijke Philips Electronics N.V. Bildprojektionssystem mit automatischer Scharfeinstellung
US5400093A (en) * 1992-12-28 1995-03-21 U.S. Philips Corporation Image projection system with autofocusing
US5434632A (en) * 1993-03-22 1995-07-18 U.S. Philips Corporation Image projection apparatus with a autofocusing system
US5609404A (en) * 1996-04-16 1997-03-11 Eastman Kodak Company Apparatus and related method for correcting slide warpage in a slide projector
US6778277B2 (en) * 2001-05-24 2004-08-17 Eastman Kodak Company Apparatus and method to measure film motion in a film gate

Also Published As

Publication number Publication date
SE375386B (de) 1975-04-14
DE2145729B2 (de) 1974-02-14
GB1357581A (en) 1974-06-26
BE772530A (fr) 1972-01-17
CA962099A (en) 1975-02-04
DE2145729C3 (de) 1974-09-19
CH530020A (de) 1972-10-31
DE2145729A1 (de) 1972-03-16
JPS5142940B1 (de) 1976-11-18
ATA768971A (de) 1975-11-15
BR7105990D0 (pt) 1973-04-12
US3672757A (en) 1972-06-27
NL7112544A (de) 1972-03-16
ZA716108B (en) 1972-05-31
ES395045A1 (es) 1974-11-16
AU3340671A (en) 1973-03-22
FR2107602A5 (de) 1972-05-05
IL37636A0 (en) 1971-11-29
IL37636A (en) 1974-07-31

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee