IL34951A - Automatic focusing system for slide projectors and the like - Google Patents

Automatic focusing system for slide projectors and the like

Info

Publication number
IL34951A
IL34951A IL34951A IL3495170A IL34951A IL 34951 A IL34951 A IL 34951A IL 34951 A IL34951 A IL 34951A IL 3495170 A IL3495170 A IL 3495170A IL 34951 A IL34951 A IL 34951A
Authority
IL
Israel
Prior art keywords
automatic focusing
focusing system
slide projectors
projectors
slide
Prior art date
Application number
IL34951A
Other versions
IL34951A0 (en
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 IL34951A0 publication Critical patent/IL34951A0/en
Publication of IL34951A publication Critical patent/IL34951A/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)
  • Projection Apparatus (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Transforming Electric Information Into Light Information (AREA)
IL34951A 1969-07-22 1970-07-19 Automatic focusing system for slide projectors and the like IL34951A (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 (2)

Publication Number Publication Date
IL34951A0 IL34951A0 (en) 1970-09-17
IL34951A true IL34951A (en) 1973-02-28

Family

ID=26714651

Family Applications (1)

Application Number Title Priority Date Filing Date
IL34951A IL34951A (en) 1969-07-22 1970-07-19 Automatic focusing system for slide projectors and the like

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
GB1285870A (en) 1972-08-16
BE753741A (en) 1970-12-31
JPS5012304B1 (en) 1975-05-10
FR2053071B1 (en) 1977-11-04
NL7010832A (en) 1971-01-26
CA948908A (en) 1974-06-11
FR2053071A1 (en) 1971-04-16
DE2036119A1 (en) 1971-02-04
SE360747B (en) 1973-10-01
CH516172A (en) 1971-11-30
DE2036119B2 (en) 1973-08-23
DE2036119C3 (en) 1974-03-28
DE7027406U (en) 1970-12-03
IL34951A0 (en) 1970-09-17
AT312324B (en) 1973-12-27

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