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FR2429382A1 - Source lumineuse pour projecteurs cinematographiques de format " super 8 " - Google Patents

Source lumineuse pour projecteurs cinematographiques de format " super 8 "

Info

Publication number
FR2429382A1
FR2429382A1 FR7915689A FR7915689A FR2429382A1 FR 2429382 A1 FR2429382 A1 FR 2429382A1 FR 7915689 A FR7915689 A FR 7915689A FR 7915689 A FR7915689 A FR 7915689A FR 2429382 A1 FR2429382 A1 FR 2429382A1
Authority
FR
France
Prior art keywords
lamp
pref
light source
contg
mercury
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.)
Withdrawn
Application number
FR7915689A
Other languages
English (en)
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.)
EMI Group Ltd
Original Assignee
Thorn Electrical Industries Ltd
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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Publication of FR2429382A1 publication Critical patent/FR2429382A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Projection Apparatus (AREA)
  • Discharge Lamp (AREA)

Abstract

L'invention concerne une source lumineuse pour un projecteur cinématographique de format << Super 8 >>. Cette source lumineuse comprend un réflecteur parabolique 10 de moins de 60 mm de diamètre et une lampe à décharge 11 à halogénures métalliques à un seul culot scellée dans le réflecteur, la lampe 11 étant remplie d'argon, de vapeurs de mercure et de plusieurs halogénures métalliques et étant conçue pour être alimentée en courant alternatif. Application aux projecteurs cinématographiques.
FR7915689A 1978-06-19 1979-06-19 Source lumineuse pour projecteurs cinematographiques de format " super 8 " Withdrawn FR2429382A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7827212 1978-06-19

Publications (1)

Publication Number Publication Date
FR2429382A1 true FR2429382A1 (fr) 1980-01-18

Family

ID=10498018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7915689A Withdrawn FR2429382A1 (fr) 1978-06-19 1979-06-19 Source lumineuse pour projecteurs cinematographiques de format " super 8 "

Country Status (7)

Country Link
JP (1) JPS554087A (fr)
AU (1) AU4809479A (fr)
DD (1) DD144330A5 (fr)
DE (1) DE2924463A1 (fr)
FR (1) FR2429382A1 (fr)
IT (1) IT7923705A0 (fr)
NL (1) NL7904797A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110812A1 (de) * 1980-03-24 1981-12-24 Gte Products Corp., Wilmington, Del. Hochdruck-metalldampf-entladungslampe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321504A (en) * 1980-03-24 1982-03-23 Gte Products Corporation Low wattage metal halide arc discharge lamp
US4935668A (en) * 1988-02-18 1990-06-19 General Electric Company Metal halide lamp having vacuum shroud for improved performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3110812A1 (de) * 1980-03-24 1981-12-24 Gte Products Corp., Wilmington, Del. Hochdruck-metalldampf-entladungslampe

Also Published As

Publication number Publication date
JPS554087A (en) 1980-01-12
IT7923705A0 (it) 1979-06-20
NL7904797A (nl) 1979-12-21
AU4809479A (en) 1980-01-03
DE2924463A1 (de) 1980-01-03
DD144330A5 (de) 1980-10-08

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Legal Events

Date Code Title Description
ST Notification of lapse