FR1021310A - Luminous index - Google Patents

Luminous index

Info

Publication number
FR1021310A
FR1021310A FR1021310DA FR1021310A FR 1021310 A FR1021310 A FR 1021310A FR 1021310D A FR1021310D A FR 1021310DA FR 1021310 A FR1021310 A FR 1021310A
Authority
FR
France
Prior art keywords
luminous index
luminous
index
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
Other languages
French (fr)
Inventor
Bruno Aldegheri
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
Application granted granted Critical
Publication of FR1021310A publication Critical patent/FR1021310A/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
    • G03B21/26—Projecting separately subsidiary matter simultaneously with main image

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1021310D 1950-04-17 1950-04-17 Luminous index Expired FR1021310A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1021310T 1950-04-17

Publications (1)

Publication Number Publication Date
FR1021310A true FR1021310A (en) 1953-02-17

Family

ID=9576901

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1021310D Expired FR1021310A (en) 1950-04-17 1950-04-17 Luminous index

Country Status (1)

Country Link
FR (1) FR1021310A (en)

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