GB207837A - Improvements in engraved dies intended to emboss microscopic lenticular nets on photographic films - Google Patents

Improvements in engraved dies intended to emboss microscopic lenticular nets on photographic films

Info

Publication number
GB207837A
GB207837A GB30541/23A GB3054123A GB207837A GB 207837 A GB207837 A GB 207837A GB 30541/23 A GB30541/23 A GB 30541/23A GB 3054123 A GB3054123 A GB 3054123A GB 207837 A GB207837 A GB 207837A
Authority
GB
United Kingdom
Prior art keywords
elements
films
microscopic
emboss
nets
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
GB30541/23A
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.)
KELLER DORIAN AND CO
Original Assignee
KELLER DORIAN AND 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 KELLER DORIAN AND CO filed Critical KELLER DORIAN AND CO
Publication of GB207837A publication Critical patent/GB207837A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/14—Additive processes using lenticular screens; Materials therefor; Preparing or processing such materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)

Abstract

207,837. Keller-Dorian et Cie. Dec. 4, 1922, [Convention date]. Void [Publislied under Sect. 91 of the Act]. Colour photography; films.-Relates to processes in which films having microscopic lenticular elements thereon are used, and consists in decreasing the size of the elements to such an extent that diffraction has a preponderating effect in the formation of the microscopic images of the ocular disc of the objective. The clearness and definition of the images are thus enhanced. The elements number 500 per sq. mm. or more and the number may be selected so that the diameter of each of them corresponds with the diffraction image whereby the whole of the sensitive film is utilized. The number of elements will varv according to the thickness of the film and the aperture used. Films having larger lenticular elements can be made to give the required diffraction effects by employing an opaque screen apertured to reduce the elements to the required size.
GB30541/23A 1922-12-04 1923-12-04 Improvements in engraved dies intended to emboss microscopic lenticular nets on photographic films Expired GB207837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR207837X 1922-12-04

Publications (1)

Publication Number Publication Date
GB207837A true GB207837A (en) 1924-12-18

Family

ID=8880539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30541/23A Expired GB207837A (en) 1922-12-04 1923-12-04 Improvements in engraved dies intended to emboss microscopic lenticular nets on photographic films

Country Status (1)

Country Link
GB (1) GB207837A (en)

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