FR1515357A - Device for automatic correction of the focus in projection devices or the like - Google Patents

Device for automatic correction of the focus in projection devices or the like

Info

Publication number
FR1515357A
FR1515357A FR97834A FR97834A FR1515357A FR 1515357 A FR1515357 A FR 1515357A FR 97834 A FR97834 A FR 97834A FR 97834 A FR97834 A FR 97834A FR 1515357 A FR1515357 A FR 1515357A
Authority
FR
France
Prior art keywords
focus
automatic correction
projection devices
projection
devices
Prior art date
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
FR97834A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of FR1515357A publication Critical patent/FR1515357A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids
    • 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
FR97834A 1966-03-08 1967-03-08 Device for automatic correction of the focus in projection devices or the like Expired FR1515357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53268866A 1966-03-08 1966-03-08

Publications (1)

Publication Number Publication Date
FR1515357A true FR1515357A (en) 1968-03-01

Family

ID=24122760

Family Applications (1)

Application Number Title Priority Date Filing Date
FR97834A Expired FR1515357A (en) 1966-03-08 1967-03-08 Device for automatic correction of the focus in projection devices or the like

Country Status (2)

Country Link
FR (1) FR1515357A (en)
GB (1) GB1116425A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0488585A1 (en) * 1990-11-26 1992-06-03 Ncr International Inc. Optical scanning apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0488585A1 (en) * 1990-11-26 1992-06-03 Ncr International Inc. Optical scanning apparatus

Also Published As

Publication number Publication date
GB1116425A (en) 1968-06-06

Similar Documents

Publication Publication Date Title
FR1421009A (en) Device for the separation of materials
FR1426576A (en) Device for determining the blood group
FR1435601A (en) Automatic device for adjusting the lumination for cameras
FR1508480A (en) Autofocus device for electro-optical analysis mechanisms
FR1515357A (en) Device for automatic correction of the focus in projection devices or the like
FR1541506A (en) Vacuum holding device with valve for dental prostheses
FR1501951A (en) Automatic rocking device for prams, cradles and the like
BE762950A (en) DEVICE FOR CLEANING SURFACES
FR1381954A (en) Connection device between beam elements for buildings
FR1488433A (en) Improved capping device for automatic capping
FR1426546A (en) Device for making artificial snow
FR1528060A (en) Device for automatic adjustment of the density of fluids
FR1491435A (en) Device for cleaning potatoes and similar tubers
FR1503452A (en) Focusing device for slide projectors
FR93271E (en) Suspension device for the clockwork movement.
FR1547747A (en) Device for automatic demoulding of washbasins and the like
FR1403103A (en) Quick coupling device for pipes and the like
FR1464763A (en) Device for cleaning vehicles
RO63797A (en) DEVICE FOR ATTACHING CONTAINERS
FR1524478A (en) Improved cleaning device for windows and the like
BE756484A (en) FOCUS HOLDING DEVICE
FR92817E (en) Automatic adjustment device for brakes.
BE748078A (en) DEVICE FOR THE PHOTOELECTRIC DETERMINATION OF THE POSITION
FR1405321A (en) Device for measuring the angle of incidence of light radiation
FR1506096A (en) Device for checking the cleanliness of containers