FR2435665A1 - Element d'eclairement pour appareil de prises de vues cinematographiques - Google Patents

Element d'eclairement pour appareil de prises de vues cinematographiques

Info

Publication number
FR2435665A1
FR2435665A1 FR7922157A FR7922157A FR2435665A1 FR 2435665 A1 FR2435665 A1 FR 2435665A1 FR 7922157 A FR7922157 A FR 7922157A FR 7922157 A FR7922157 A FR 7922157A FR 2435665 A1 FR2435665 A1 FR 2435665A1
Authority
FR
France
Prior art keywords
elements
lighting element
projector
shooting apparatus
cinematographic
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.)
Granted
Application number
FR7922157A
Other languages
English (en)
Other versions
FR2435665B1 (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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania Inc
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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Publication of FR2435665A1 publication Critical patent/FR2435665A1/fr
Application granted granted Critical
Publication of FR2435665B1 publication Critical patent/FR2435665B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Selon l'invention, l'élément comprend un réflecteur dont la surface interne concave est constituée de trois parties diffusantes adjacentes dont les caractéristiques de diffusion sont différentes les unes des autres. En outre, la lampe est pourvue d'une structure à deux filaments de manière à déterminer une distribution bi-modale d'intensité lumineuse sur un champ rectangulaire situé à une distance déterminée de l'élément. De préférence, un projecteur comprend deux éléments de ce type fixés sur un support, les lampes des deux éléments étant disposées de telle manière que les deux distributions bi-modales soient axées sur les diagonales du champ. Application : projecteur pour système cinématographique à développement instantané.
FR7922157A 1978-09-06 1979-09-05 Element d'eclairement pour appareil de prises de vues cinematographiques Granted FR2435665A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/939,930 US4169237A (en) 1978-09-06 1978-09-06 High voltage movie light and incandescent lamp unit for use therewith

Publications (2)

Publication Number Publication Date
FR2435665A1 true FR2435665A1 (fr) 1980-04-04
FR2435665B1 FR2435665B1 (fr) 1983-07-01

Family

ID=25473952

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7922157A Granted FR2435665A1 (fr) 1978-09-06 1979-09-05 Element d'eclairement pour appareil de prises de vues cinematographiques

Country Status (8)

Country Link
US (1) US4169237A (fr)
JP (2) JPS5537793A (fr)
BE (1) BE878597A (fr)
CA (1) CA1124220A (fr)
DE (1) DE2930764A1 (fr)
FR (1) FR2435665A1 (fr)
GB (1) GB2031575B (fr)
NL (1) NL7906667A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3143776A1 (de) * 1981-11-04 1983-05-11 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München "beleuchtungsvorrichtung fuer projektionseinrichtungen"
JPS59111136A (ja) * 1982-12-16 1984-06-27 Wakomu Seisakusho:Kk 映写用光源装置
US4499526A (en) * 1983-08-25 1985-02-12 General Electric Company Lamp unit having glass reflector member with recessed base end
CA1265840A (fr) * 1985-10-29 1990-02-13 Antonius J. Huijbers Lampe a incandescence a ampoule a couche reflechissante annulaire et a filament en zigzag
US4728849A (en) * 1986-07-07 1988-03-01 Gte Products Corporation Capsule light source for electric lamp
JPH0718087Y2 (ja) * 1988-06-15 1995-04-26 松下電工株式会社 反射板
US6271629B1 (en) * 2000-01-25 2001-08-07 Vincent Mario Pace Modular system for movie set lighting
KR100810297B1 (ko) * 2006-10-31 2008-03-06 삼성전자주식회사 휴대용 무선 단말기의 무선 통신 인터페이스
US20100140831A1 (en) * 2008-12-05 2010-06-10 Computerized Cutters, Inc. Molded object-forming apparatus and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447923A (en) * 1944-08-26 1948-08-24 Holophane Co Inc Lighting system and lighting units for use therein
US4021659A (en) * 1975-10-30 1977-05-03 General Electric Company Projector lamp reflector
US4035631A (en) * 1975-12-15 1977-07-12 General Electric Company Projector lamp reflector

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2411568A (en) * 1943-04-23 1946-11-26 Gen Electric Lamp unit
US2387038A (en) * 1943-09-15 1945-10-16 Rca Corp Reflector
US2810660A (en) * 1954-02-01 1957-10-22 Westinghouse Electric Corp Diffusing reflecting coating and method of preparing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447923A (en) * 1944-08-26 1948-08-24 Holophane Co Inc Lighting system and lighting units for use therein
US4021659A (en) * 1975-10-30 1977-05-03 General Electric Company Projector lamp reflector
US4035631A (en) * 1975-12-15 1977-07-12 General Electric Company Projector lamp reflector

Also Published As

Publication number Publication date
US4169237A (en) 1979-09-25
GB2031575A (en) 1980-04-23
CA1124220A (fr) 1982-05-25
NL7906667A (nl) 1980-03-10
JPS5933034U (ja) 1984-02-29
GB2031575B (en) 1982-10-06
DE2930764A1 (de) 1980-03-20
JPS5537793A (en) 1980-03-15
FR2435665B1 (fr) 1983-07-01
BE878597A (fr) 1979-12-31

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse