FR557345A - Optical system for the condensation of light - Google Patents

Optical system for the condensation of light

Info

Publication number
FR557345A
FR557345A FR557345DA FR557345A FR 557345 A FR557345 A FR 557345A FR 557345D A FR557345D A FR 557345DA FR 557345 A FR557345 A FR 557345A
Authority
FR
France
Prior art keywords
condensation
light
optical system
optical
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
Charles Henry Frampton
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 FR557345A publication Critical patent/FR557345A/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
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR557345D 1921-10-18 1922-10-12 Optical system for the condensation of light Expired FR557345A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB557345X 1921-10-18

Publications (1)

Publication Number Publication Date
FR557345A true FR557345A (en) 1923-08-07

Family

ID=10474743

Family Applications (1)

Application Number Title Priority Date Filing Date
FR557345D Expired FR557345A (en) 1921-10-18 1922-10-12 Optical system for the condensation of light

Country Status (1)

Country Link
FR (1) FR557345A (en)

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