BE772530A - Ensemble de mise au point automatique pour projecteurs - Google Patents

Ensemble de mise au point automatique pour projecteurs

Info

Publication number
BE772530A
BE772530A BE772530A BE772530A BE772530A BE 772530 A BE772530 A BE 772530A BE 772530 A BE772530 A BE 772530A BE 772530 A BE772530 A BE 772530A BE 772530 A BE772530 A BE 772530A
Authority
BE
Belgium
Prior art keywords
projectors
kit
automatic focus
focus
automatic
Prior art date
Application number
BE772530A
Other languages
English (en)
French (fr)
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 BE772530A publication Critical patent/BE772530A/xx

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)
BE772530A 1970-09-14 1971-09-13 Ensemble de mise au point automatique pour projecteurs BE772530A (fr)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE772530A true BE772530A (fr) 1972-01-17

Family

ID=22105406

Family Applications (1)

Application Number Title Priority Date Filing Date
BE772530A BE772530A (fr) 1970-09-14 1971-09-13 Ensemble de mise au point automatique pour projecteurs

Country Status (15)

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

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
US5400093A (en) * 1992-12-28 1995-03-21 U.S. Philips Corporation Image projection system with autofocusing
EP0605053B1 (en) * 1992-12-28 1997-11-19 Koninklijke Philips Electronics N.V. Image projection system with autofocussing
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
IL37636A (en) 1974-07-31
JPS5142940B1 (xx) 1976-11-18
IL37636A0 (en) 1971-11-29
ZA716108B (en) 1972-05-31
GB1357581A (en) 1974-06-26
DE2145729B2 (de) 1974-02-14
ATA768971A (de) 1975-11-15
US3672757A (en) 1972-06-27
CH530020A (de) 1972-10-31
DE2145729A1 (de) 1972-03-16
ES395045A1 (es) 1974-11-16
NL7112544A (xx) 1972-03-16
DE2145729C3 (de) 1974-09-19
SE375386B (xx) 1975-04-14
FR2107602A5 (xx) 1972-05-05
CA962099A (en) 1975-02-04
BR7105990D0 (pt) 1973-04-12
AT331534B (de) 1976-08-25
AU3340671A (en) 1973-03-22

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