US3200281A - Two-filament incandescent lamp for non-dazzling high and low beams in automobile headlights - Google Patents

Two-filament incandescent lamp for non-dazzling high and low beams in automobile headlights Download PDF

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Publication number
US3200281A
US3200281A US228928A US22892862A US3200281A US 3200281 A US3200281 A US 3200281A US 228928 A US228928 A US 228928A US 22892862 A US22892862 A US 22892862A US 3200281 A US3200281 A US 3200281A
Authority
US
United States
Prior art keywords
filament
focal point
incandescent lamp
dazzling
automobile headlights
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 - Lifetime
Application number
US228928A
Other languages
English (en)
Inventor
Mickley Rolf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3200281A publication Critical patent/US3200281A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • F21S41/164—Incandescent light sources, e.g. filament or halogen lamps having two or more filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/332—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with continuity at the junction between adjacent areas

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US228928A 1961-10-09 1962-10-08 Two-filament incandescent lamp for non-dazzling high and low beams in automobile headlights Expired - Lifetime US3200281A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM51258A DE1170540B (de) 1961-10-09 1961-10-09 Zweifadengluehlampe fuer abgeblendetes Fern- und Nahlicht in Kraftfahrzeugscheinwerfern

Publications (1)

Publication Number Publication Date
US3200281A true US3200281A (en) 1965-08-10

Family

ID=7307068

Family Applications (1)

Application Number Title Priority Date Filing Date
US228928A Expired - Lifetime US3200281A (en) 1961-10-09 1962-10-08 Two-filament incandescent lamp for non-dazzling high and low beams in automobile headlights

Country Status (5)

Country Link
US (1) US3200281A (enrdf_load_stackoverflow)
DE (1) DE1170540B (enrdf_load_stackoverflow)
GB (1) GB981207A (enrdf_load_stackoverflow)
NL (1) NL284072A (enrdf_load_stackoverflow)
SE (1) SE301914B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736452A (en) * 1970-09-30 1973-05-29 Philips Corp Halogen motorcar lamp

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1280626A (en) * 1916-01-17 1918-10-08 Adelbert Ames Jr Reflector.
US1947243A (en) * 1932-07-28 1934-02-13 Gen Electric Electric lamp
US1963672A (en) * 1931-06-05 1934-06-19 Bertrand A Parkes Circular drying, stretching, and finishing machine
US2020130A (en) * 1931-05-04 1935-11-05 Gen Electric Vehicle headlight lamp
US2245793A (en) * 1937-09-30 1941-06-17 Westinghouse Electric & Mfg Co Multiple filament lamp
US2501140A (en) * 1947-10-17 1950-03-21 Pique Baudilio Jesus Electric-light projecting reflector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1280626A (en) * 1916-01-17 1918-10-08 Adelbert Ames Jr Reflector.
US2020130A (en) * 1931-05-04 1935-11-05 Gen Electric Vehicle headlight lamp
US1963672A (en) * 1931-06-05 1934-06-19 Bertrand A Parkes Circular drying, stretching, and finishing machine
US1947243A (en) * 1932-07-28 1934-02-13 Gen Electric Electric lamp
US2245793A (en) * 1937-09-30 1941-06-17 Westinghouse Electric & Mfg Co Multiple filament lamp
US2501140A (en) * 1947-10-17 1950-03-21 Pique Baudilio Jesus Electric-light projecting reflector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736452A (en) * 1970-09-30 1973-05-29 Philips Corp Halogen motorcar lamp

Also Published As

Publication number Publication date
SE301914B (enrdf_load_stackoverflow) 1968-06-24
NL284072A (enrdf_load_stackoverflow)
DE1170540B (de) 1964-05-21
GB981207A (en) 1965-01-20

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