ATA207574A - FOCUSING DEVICE FOR A PROJECTION LENS - Google Patents

FOCUSING DEVICE FOR A PROJECTION LENS

Info

Publication number
ATA207574A
ATA207574A AT207574A AT207574A ATA207574A AT A207574 A ATA207574 A AT A207574A AT 207574 A AT207574 A AT 207574A AT 207574 A AT207574 A AT 207574A AT A207574 A ATA207574 A AT A207574A
Authority
AT
Austria
Prior art keywords
projection lens
focusing device
focusing
lens
projection
Prior art date
Application number
AT207574A
Other languages
German (de)
Other versions
AT348860B (en
Inventor
Johann Ing Nowak
Josef Ing Schild
Original Assignee
Eumig
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 Eumig filed Critical Eumig
Priority to AT207574A priority Critical patent/AT348860B/en
Publication of ATA207574A publication Critical patent/ATA207574A/en
Application granted granted Critical
Publication of AT348860B publication Critical patent/AT348860B/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)
  • Automatic Focus Adjustment (AREA)
AT207574A 1974-05-13 1974-05-13 FOCUSING DEVICE FOR A PROJECTION LENS AT348860B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT207574A AT348860B (en) 1974-05-13 1974-05-13 FOCUSING DEVICE FOR A PROJECTION LENS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT207574A AT348860B (en) 1974-05-13 1974-05-13 FOCUSING DEVICE FOR A PROJECTION LENS

Publications (2)

Publication Number Publication Date
ATA207574A true ATA207574A (en) 1978-07-15
AT348860B AT348860B (en) 1979-03-12

Family

ID=3527237

Family Applications (1)

Application Number Title Priority Date Filing Date
AT207574A AT348860B (en) 1974-05-13 1974-05-13 FOCUSING DEVICE FOR A PROJECTION LENS

Country Status (1)

Country Link
AT (1) AT348860B (en)

Families Citing this family (1)

* 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

Also Published As

Publication number Publication date
AT348860B (en) 1979-03-12

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Legal Events

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