CH612771A5 - Focusing device for reproduction and projection units - Google Patents

Focusing device for reproduction and projection units

Info

Publication number
CH612771A5
CH612771A5 CH1223177A CH1223177A CH612771A5 CH 612771 A5 CH612771 A5 CH 612771A5 CH 1223177 A CH1223177 A CH 1223177A CH 1223177 A CH1223177 A CH 1223177A CH 612771 A5 CH612771 A5 CH 612771A5
Authority
CH
Switzerland
Prior art keywords
reproduction
focusing device
projection units
projection
units
Prior art date
Application number
CH1223177A
Inventor
Hat Auf Nennung Verzichtet Erfinder
Original Assignee
Bacher Baptist Kg
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 Bacher Baptist Kg filed Critical Bacher Baptist Kg
Publication of CH612771A5 publication Critical patent/CH612771A5/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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/34—Means for automatic focusing therefor
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)
  • Focusing (AREA)
CH1223177A 1976-12-07 1977-10-06 Focusing device for reproduction and projection units CH612771A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762655256 DE2655256C3 (en) 1976-12-07 1976-12-07 Focusing device for reproduction and playback devices

Publications (1)

Publication Number Publication Date
CH612771A5 true CH612771A5 (en) 1979-08-15

Family

ID=5994810

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1223177A CH612771A5 (en) 1976-12-07 1977-10-06 Focusing device for reproduction and projection units

Country Status (4)

Country Link
CH (1) CH612771A5 (en)
DE (1) DE2655256C3 (en)
DK (1) DK542677A (en)
IT (1) IT1158414B (en)

Also Published As

Publication number Publication date
DE2655256C3 (en) 1979-08-16
IT1158414B (en) 1987-02-18
DE2655256B2 (en) 1978-12-14
DK542677A (en) 1978-06-08
DE2655256A1 (en) 1978-06-08

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Legal Events

Date Code Title Description
PL Patent ceased