FR1571032A - - Google Patents

Info

Publication number
FR1571032A
FR1571032A FR1571032DA FR1571032A FR 1571032 A FR1571032 A FR 1571032A FR 1571032D A FR1571032D A FR 1571032DA FR 1571032 A FR1571032 A FR 1571032A
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
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 filed Critical
Application granted granted Critical
Publication of FR1571032A publication Critical patent/FR1571032A/fr
Expired legal-status Critical Current

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)
FR1571032D 1967-06-23 1968-06-21 Expired FR1571032A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64826567A 1967-06-23 1967-06-23

Publications (1)

Publication Number Publication Date
FR1571032A true FR1571032A (fr) 1969-06-13

Family

ID=24600103

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1571032D Expired FR1571032A (fr) 1967-06-23 1968-06-21

Country Status (3)

Country Link
US (1) US3466125A (fr)
CH (1) CH474073A (fr)
FR (1) FR1571032A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638549A (en) * 1969-07-29 1972-02-01 Hewlett Packard Co Photographing system for oscilloscope
US3744894A (en) * 1971-05-04 1973-07-10 Eastman Kodak Co Servo amplifier for a self-positioning system
US3917394A (en) * 1973-10-09 1975-11-04 Display Enterprises Inc Automatic component positioning device for optical system
US4415244A (en) * 1982-03-22 1983-11-15 Telex Communications, Inc. Automatic focusing system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037423A (en) * 1957-12-30 1962-06-05 Polaroid Corp Automatic focusing system
US3249001A (en) * 1963-06-10 1966-05-03 Honeywell Inc Automatic focusing photographic projector
US3249006A (en) * 1964-04-14 1966-05-03 Honeywell Inc Automatic focusing photographic projector
US3264935A (en) * 1964-01-06 1966-08-09 Robert W Vose Self-focusing slide projector
US3249007A (en) * 1964-03-26 1966-05-03 Honeywell Inc Automatic focusing photographic projector
US3296924A (en) * 1965-02-23 1967-01-10 Bell & Howell Co Single cell image plane position appraisal system for a slide projector
US3342102A (en) * 1965-02-23 1967-09-19 Bell & Howell Co Image plane position appraisal system for a slide projector

Also Published As

Publication number Publication date
US3466125A (en) 1969-09-09
CH474073A (fr) 1969-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse