FR452323A - Light condensation system with absorption of calorific radiations or other harmful radiations, for light projections and for phototherapy - Google Patents

Light condensation system with absorption of calorific radiations or other harmful radiations, for light projections and for phototherapy

Info

Publication number
FR452323A
FR452323A FR452323DA FR452323A FR 452323 A FR452323 A FR 452323A FR 452323D A FR452323D A FR 452323DA FR 452323 A FR452323 A FR 452323A
Authority
FR
France
Prior art keywords
radiations
light
phototherapy
calorific
absorption
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
Henri Cheron
Henri Dominici
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR452323A publication Critical patent/FR452323A/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
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR452323D 1912-03-04 1912-03-04 Light condensation system with absorption of calorific radiations or other harmful radiations, for light projections and for phototherapy Expired FR452323A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR452323T 1912-03-04

Publications (1)

Publication Number Publication Date
FR452323A true FR452323A (en) 1913-05-14

Family

ID=1492557

Family Applications (1)

Application Number Title Priority Date Filing Date
FR452323D Expired FR452323A (en) 1912-03-04 1912-03-04 Light condensation system with absorption of calorific radiations or other harmful radiations, for light projections and for phototherapy

Country Status (1)

Country Link
FR (1) FR452323A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389633A (en) * 1964-12-17 1968-06-25 Vanderhooft John Jacob Optical systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389633A (en) * 1964-12-17 1968-06-25 Vanderhooft John Jacob Optical systems

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