CH226779A - Incandescent projection lamp. - Google Patents

Incandescent projection lamp.

Info

Publication number
CH226779A
CH226779A CH226779DA CH226779A CH 226779 A CH226779 A CH 226779A CH 226779D A CH226779D A CH 226779DA CH 226779 A CH226779 A CH 226779A
Authority
CH
Switzerland
Prior art keywords
projection lamp
incandescent projection
incandescent
lamp
projection
Prior art date
Application number
Other languages
French (fr)
Inventor
Freres Pathe-Cinema Anci Pathe
Original Assignee
Pathe Cinema
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 Pathe Cinema filed Critical Pathe Cinema
Publication of CH226779A publication Critical patent/CH226779A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • H01K7/02—Lamps for purposes other than general lighting for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
CH226779D 1941-05-10 1942-04-07 Incandescent projection lamp. CH226779A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR929289T 1941-05-10

Publications (1)

Publication Number Publication Date
CH226779A true CH226779A (en) 1943-04-30

Family

ID=9442372

Family Applications (1)

Application Number Title Priority Date Filing Date
CH226779D CH226779A (en) 1941-05-10 1942-04-07 Incandescent projection lamp.

Country Status (3)

Country Link
CH (1) CH226779A (en)
FR (1) FR929289A (en)
GB (1) GB571242A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763348A (en) * 1972-01-05 1973-10-02 Argus Eng Co Apparatus and method for uniform illumination of a surface

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL260918A (en) * 1961-02-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763348A (en) * 1972-01-05 1973-10-02 Argus Eng Co Apparatus and method for uniform illumination of a surface

Also Published As

Publication number Publication date
FR929289A (en) 1947-12-22
GB571242A (en) 1945-08-14

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