GB294579A - - Google Patents

Info

Publication number
GB294579A
GB294579A GB294579DA GB294579A GB 294579 A GB294579 A GB 294579A GB 294579D A GB294579D A GB 294579DA GB 294579 A GB294579 A GB 294579A
Authority
GB
United Kingdom
Prior art keywords
film
lens
diaphragm
light
distance
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.)
Active
Application number
Other languages
English (en)
Publication of GB294579A publication Critical patent/GB294579A/en
Active 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)
GB294579D Active GB294579A (https=)

Publications (1)

Publication Number Publication Date
GB294579A true GB294579A (https=)

Family

ID=1741596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB294579D Active GB294579A (https=)

Country Status (1)

Country Link
GB (1) GB294579A (https=)

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