DE1797061B2 - SLIDE PROJECTOR WITH AUTOMATIC FOCUSING DEVICE - Google Patents

SLIDE PROJECTOR WITH AUTOMATIC FOCUSING DEVICE

Info

Publication number
DE1797061B2
DE1797061B2 DE19681797061 DE1797061A DE1797061B2 DE 1797061 B2 DE1797061 B2 DE 1797061B2 DE 19681797061 DE19681797061 DE 19681797061 DE 1797061 A DE1797061 A DE 1797061A DE 1797061 B2 DE1797061 B2 DE 1797061B2
Authority
DE
Germany
Prior art keywords
automatic focusing
focusing device
slide projector
projector
slide
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.)
Granted
Application number
DE19681797061
Other languages
German (de)
Other versions
DE1797061A1 (en
DE1797061C (en
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
Priority to DE19681797061 priority Critical patent/DE1797061C/en
Priority claimed from DE19681797061 external-priority patent/DE1797061C/en
Priority to GB1225472D priority patent/GB1225472A/en
Priority to US817913A priority patent/US3517992A/en
Publication of DE1797061A1 publication Critical patent/DE1797061A1/en
Publication of DE1797061B2 publication Critical patent/DE1797061B2/en
Application granted granted Critical
Publication of DE1797061C publication Critical patent/DE1797061C/en
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
DE19681797061 1968-03-22 1968-08-09 Slide projector with automatic focusing device Expired DE1797061C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19681797061 DE1797061C (en) 1968-08-09 Slide projector with automatic focusing device
GB1225472D GB1225472A (en) 1968-03-22 1969-03-24
US817913A US3517992A (en) 1968-04-24 1969-04-21 Automatic focusing slide projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681797061 DE1797061C (en) 1968-08-09 Slide projector with automatic focusing device

Publications (3)

Publication Number Publication Date
DE1797061A1 DE1797061A1 (en) 1971-03-18
DE1797061B2 true DE1797061B2 (en) 1973-01-18
DE1797061C DE1797061C (en) 1973-08-02

Family

ID=

Also Published As

Publication number Publication date
DE1797061A1 (en) 1971-03-18

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8340 Patent of addition ceased/non-payment of fee of main patent