FR386041A - Device for protecting the lenses of lighting and similar projection devices from partial heating - Google Patents

Device for protecting the lenses of lighting and similar projection devices from partial heating

Info

Publication number
FR386041A
FR386041A FR386041DA FR386041A FR 386041 A FR386041 A FR 386041A FR 386041D A FR386041D A FR 386041DA FR 386041 A FR386041 A FR 386041A
Authority
FR
France
Prior art keywords
lenses
lighting
protecting
projection devices
partial heating
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
G. Rodenstock
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.)
Optische Werke G Rodenstock
Original Assignee
Optische Werke G Rodenstock
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 Optische Werke G Rodenstock filed Critical Optische Werke G Rodenstock
Application granted granted Critical
Publication of FR386041A publication Critical patent/FR386041A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR386041D 1908-01-08 1908-01-08 Device for protecting the lenses of lighting and similar projection devices from partial heating Expired FR386041A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR386041T 1908-01-08

Publications (1)

Publication Number Publication Date
FR386041A true FR386041A (en) 1908-06-02

Family

ID=1431875

Family Applications (1)

Application Number Title Priority Date Filing Date
FR386041D Expired FR386041A (en) 1908-01-08 1908-01-08 Device for protecting the lenses of lighting and similar projection devices from partial heating

Country Status (1)

Country Link
FR (1) FR386041A (en)

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