BE753741A - AUTOMATIC PROJECTOR FOCUSING SYSTEM - Google Patents

AUTOMATIC PROJECTOR FOCUSING SYSTEM

Info

Publication number
BE753741A
BE753741A BE753741DA BE753741A BE 753741 A BE753741 A BE 753741A BE 753741D A BE753741D A BE 753741DA BE 753741 A BE753741 A BE 753741A
Authority
BE
Belgium
Prior art keywords
focusing system
automatic projector
projector focusing
automatic
projector
Prior art date
Application number
Other languages
French (fr)
Inventor
O Szymber
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 BE753741A publication Critical patent/BE753741A/en

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)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
BE753741D 1969-07-22 1970-07-22 AUTOMATIC PROJECTOR FOCUSING SYSTEM BE753741A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US84331169A 1969-07-22 1969-07-22
US3795070A 1970-05-18 1970-05-18

Publications (1)

Publication Number Publication Date
BE753741A true BE753741A (en) 1970-12-31

Family

ID=26714651

Family Applications (1)

Application Number Title Priority Date Filing Date
BE753741D BE753741A (en) 1969-07-22 1970-07-22 AUTOMATIC PROJECTOR FOCUSING SYSTEM

Country Status (11)

Country Link
JP (1) JPS5012304B1 (en)
AT (1) AT312324B (en)
BE (1) BE753741A (en)
CA (1) CA948908A (en)
CH (1) CH516172A (en)
DE (2) DE7027406U (en)
FR (1) FR2053071B1 (en)
GB (1) GB1285870A (en)
IL (1) IL34951A (en)
NL (1) NL7010832A (en)
SE (1) SE360747B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518767A1 (en) * 1981-12-17 1983-06-24 Centre Nat Etd Spatiales METHOD FOR AUTOMATICALLY ADJUSTING THE SHARPNESS OF IMAGES PROJECTED ON A SCREEN AND DEVICES FOR CARRYING OUT SAID METHOD
DE3325042A1 (en) * 1983-07-12 1984-02-23 Kodak Ag, 7000 Stuttgart SELF FOCUSING DEVICE
JPS6351681A (en) * 1986-08-20 1988-03-04 Agency Of Ind Science & Technol Semiconductor device
DE4116803A1 (en) * 1991-05-23 1992-12-10 Agfa Gevaert Ag DEVICE FOR THE UNIFORM ILLUMINATION OF A PROJECTION SURFACE
US6835921B2 (en) 2000-11-15 2004-12-28 Agfa Corporation Focusing system for use in imaging systems
EP1408360A3 (en) * 2002-10-11 2004-07-28 Agfa Corporation Focusing system and method for use in imaging systems

Also Published As

Publication number Publication date
NL7010832A (en) 1971-01-26
IL34951A0 (en) 1970-09-17
FR2053071A1 (en) 1971-04-16
DE2036119A1 (en) 1971-02-04
FR2053071B1 (en) 1977-11-04
GB1285870A (en) 1972-08-16
IL34951A (en) 1973-02-28
DE2036119B2 (en) 1973-08-23
SE360747B (en) 1973-10-01
CA948908A (en) 1974-06-11
DE7027406U (en) 1970-12-03
CH516172A (en) 1971-11-30
AT312324B (en) 1973-12-27
DE2036119C3 (en) 1974-03-28
JPS5012304B1 (en) 1975-05-10

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