FR830957A - An incandescent electric lamp comprising a bulb the body of which has an elongated shape in the transverse direction and has a reflective part - Google Patents

An incandescent electric lamp comprising a bulb the body of which has an elongated shape in the transverse direction and has a reflective part

Info

Publication number
FR830957A
FR830957A FR830957DA FR830957A FR 830957 A FR830957 A FR 830957A FR 830957D A FR830957D A FR 830957DA FR 830957 A FR830957 A FR 830957A
Authority
FR
France
Prior art keywords
bulb
transverse direction
elongated shape
electric lamp
reflective part
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)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR830957A publication Critical patent/FR830957A/en
Expired legal-status Critical Current

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
FR830957D 1936-12-18 1937-12-18 An incandescent electric lamp comprising a bulb the body of which has an elongated shape in the transverse direction and has a reflective part Expired FR830957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL205355X 1936-12-18

Publications (1)

Publication Number Publication Date
FR830957A true FR830957A (en) 1938-08-16

Family

ID=19778522

Family Applications (1)

Application Number Title Priority Date Filing Date
FR830957D Expired FR830957A (en) 1936-12-18 1937-12-18 An incandescent electric lamp comprising a bulb the body of which has an elongated shape in the transverse direction and has a reflective part

Country Status (7)

Country Link
US (1) US2144521A (en)
BE (1) BE425306A (en)
CH (1) CH205355A (en)
DE (1) DE718520C (en)
FR (1) FR830957A (en)
GB (1) GB513249A (en)
NL (1) NL51560C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441823A (en) * 1943-02-01 1948-05-18 Westinghouse Electric Corp Reflector lamp and optical system
US2622222A (en) * 1951-04-27 1952-12-16 Westinghouse Electric Corp Infrared heating and cooking lamp
US4379249A (en) * 1980-08-20 1983-04-05 Duro-Test, Corporation Incandescent lamp with ellipsoidal envelope and infrared reflector

Also Published As

Publication number Publication date
US2144521A (en) 1939-01-17
BE425306A (en)
CH205355A (en) 1939-06-15
DE718520C (en) 1942-03-13
NL51560C (en)
GB513249A (en) 1939-10-09

Similar Documents

Publication Publication Date Title
FR830957A (en) An incandescent electric lamp comprising a bulb the body of which has an elongated shape in the transverse direction and has a reflective part
FR797768A (en) Incandescent lamp, and luminous body particularly intended for use in this lamp
FR837699A (en) Incandescent electric lamp
FR649323A (en) Electric incandescent lamp with illuminating body in tantalum carbide
FR839200A (en) Incandescent electric lamp
FR836840A (en) Incandescent electric lamp
FR826612A (en) Gas-filled incandescent electric lamp
FR805737A (en) Tubular incandescent lamp
FR792373A (en) Electric lamp with bulb fitted with a reflective part
FR763742A (en) Gas-filled incandescent electric lamp with tubular bulb
FR779269A (en) Further development in incandescent electric lamps
FR834147A (en) Incandescent electric lamp having a refractory incandescent body
FR772035A (en) Electric lamp with diffusing bulb
FR779807A (en) Electric incandescent gas lamp
FR830156A (en) Incandescent electric lamp
FR820382A (en) Incandescent electric lamp
FR786172A (en) Incandescent electric lamp or electric discharge tube
FR769495A (en) Incandescent electric lamp or discharge tube
FR768850A (en) Incandescent electric lamp or electric discharge tube
FR732577A (en) Incandescent electric lamp or electric discharge tube without base and socket intended for mounting this lamp or tube
FR747831A (en) Incandescent electric lamp or electric discharge tube
FR844304A (en) Incandescent electric lamp
FR755808A (en) Incandescent electric lamp with silver tapered mirror
FR829773A (en) Gas-filled incandescent electric lamp
FR809975A (en) Double spiral luminous body for incandescent electric lamps