NL7906635A - Filmlicht en laagspanningsgloeilampeenheid voor gebruik daarbij. - Google Patents

Filmlicht en laagspanningsgloeilampeenheid voor gebruik daarbij. Download PDF

Info

Publication number
NL7906635A
NL7906635A NL7906635A NL7906635A NL7906635A NL 7906635 A NL7906635 A NL 7906635A NL 7906635 A NL7906635 A NL 7906635A NL 7906635 A NL7906635 A NL 7906635A NL 7906635 A NL7906635 A NL 7906635A
Authority
NL
Netherlands
Prior art keywords
region
curvature
diffusion
reflector
lamp
Prior art date
Application number
NL7906635A
Other languages
English (en)
Dutch (nl)
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 NL7906635A publication Critical patent/NL7906635A/nl

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
    • 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

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection Apparatus (AREA)
  • Optical Elements Other Than Lenses (AREA)
NL7906635A 1978-09-06 1979-09-05 Filmlicht en laagspanningsgloeilampeenheid voor gebruik daarbij. NL7906635A (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/939,928 US4169238A (en) 1978-09-06 1978-09-06 Movie light, low voltage incandescent lamp unit for use therewith, and reflector
US93992878 1978-09-06

Publications (1)

Publication Number Publication Date
NL7906635A true NL7906635A (nl) 1980-03-10

Family

ID=25473946

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7906635A NL7906635A (nl) 1978-09-06 1979-09-05 Filmlicht en laagspanningsgloeilampeenheid voor gebruik daarbij.

Country Status (8)

Country Link
US (1) US4169238A (fr)
JP (2) JPS5537792A (fr)
BE (1) BE878596A (fr)
CA (1) CA1123804A (fr)
DE (1) DE2930799A1 (fr)
FR (1) FR2435666A1 (fr)
GB (1) GB2031574B (fr)
NL (1) NL7906635A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2082745B (en) * 1980-08-27 1984-03-28 Thorn Emi Ltd An improved reflector for electric projector lamps
GB2127950A (en) * 1982-09-29 1984-04-18 Rank Organisation Plc Profile spotlight
US4755711A (en) * 1986-07-07 1988-07-05 Gte Products Corporation Electric lamp with ceramic reflector
JPH0610357Y2 (ja) * 1986-10-06 1994-03-16 カシオ計算機株式会社 光源装置
US4835439A (en) * 1987-09-29 1989-05-30 General Electric Company Increasing the oxidation resistance of molybdenum and its use for lamp seals
US4918353A (en) * 1987-09-29 1990-04-17 General Electric Company Reflector and lamp combination
EP0420214A3 (en) * 1989-09-27 1991-08-28 Toshiba Lighting & Technology Corporation Lamp device and method of bonding mirror reflector to lamp
KR970057652A (ko) * 1995-12-21 1997-07-31 윤종용 액정 프로젝터의 반사경 및 그 제조 방법
US7758223B2 (en) 2005-04-08 2010-07-20 Toshiba Lighting & Technology Corporation Lamp having outer shell to radiate heat of light source

Family Cites Families (5)

* 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
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
GB2031574B (en) 1982-11-10
US4169238A (en) 1979-09-25
JPS5537792A (en) 1980-03-15
GB2031574A (en) 1980-04-23
DE2930799A1 (de) 1980-03-20
FR2435666B1 (fr) 1983-07-01
JPS59101251U (ja) 1984-07-07
CA1123804A (fr) 1982-05-18
FR2435666A1 (fr) 1980-04-04
BE878596A (fr) 1979-12-31

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BV The patent application has lapsed