FR1039753A - Method of using catathermic glass for the constitution of optical elements in a projection apparatus - Google Patents

Method of using catathermic glass for the constitution of optical elements in a projection apparatus

Info

Publication number
FR1039753A
FR1039753A FR1039753DA FR1039753A FR 1039753 A FR1039753 A FR 1039753A FR 1039753D A FR1039753D A FR 1039753DA FR 1039753 A FR1039753 A FR 1039753A
Authority
FR
France
Prior art keywords
catathermic
constitution
glass
optical elements
projection apparatus
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)
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.)
EDITIONS FILMEES
Original Assignee
EDITIONS FILMEES
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 EDITIONS FILMEES filed Critical EDITIONS FILMEES
Application granted granted Critical
Publication of FR1039753A publication Critical patent/FR1039753A/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)
FR1039753D 1951-07-11 1951-07-11 Method of using catathermic glass for the constitution of optical elements in a projection apparatus Expired FR1039753A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1039753T 1951-07-11

Publications (1)

Publication Number Publication Date
FR1039753A true FR1039753A (en) 1953-10-09

Family

ID=9588473

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1039753D Expired FR1039753A (en) 1951-07-11 1951-07-11 Method of using catathermic glass for the constitution of optical elements in a projection apparatus

Country Status (1)

Country Link
FR (1) FR1039753A (en)

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