CH175487A - Bildwurfvorrichtung zum Projizieren eines Bildes in veränderlicher Grösse. - Google Patents

Bildwurfvorrichtung zum Projizieren eines Bildes in veränderlicher Grösse.

Info

Publication number
CH175487A
CH175487A CH175487DA CH175487A CH 175487 A CH175487 A CH 175487A CH 175487D A CH175487D A CH 175487DA CH 175487 A CH175487 A CH 175487A
Authority
CH
Switzerland
Prior art keywords
image
projecting
variable size
throwing device
variable
Prior art date
Application number
Other languages
English (en)
Inventor
Wilhelm Roth Jakob
Original Assignee
Wilhelm Roth Jakob
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 Wilhelm Roth Jakob filed Critical Wilhelm Roth Jakob
Publication of CH175487A publication Critical patent/CH175487A/de

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)
CH175487D 1933-12-06 1933-12-06 Bildwurfvorrichtung zum Projizieren eines Bildes in veränderlicher Grösse. CH175487A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH175487T 1933-12-06

Publications (1)

Publication Number Publication Date
CH175487A true CH175487A (de) 1935-02-28

Family

ID=4426277

Family Applications (1)

Application Number Title Priority Date Filing Date
CH175487D CH175487A (de) 1933-12-06 1933-12-06 Bildwurfvorrichtung zum Projizieren eines Bildes in veränderlicher Grösse.

Country Status (1)

Country Link
CH (1) CH175487A (de)

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