GB1107337A - Improvements in headlamps - Google Patents

Improvements in headlamps

Info

Publication number
GB1107337A
GB1107337A GB2579265A GB2579265A GB1107337A GB 1107337 A GB1107337 A GB 1107337A GB 2579265 A GB2579265 A GB 2579265A GB 2579265 A GB2579265 A GB 2579265A GB 1107337 A GB1107337 A GB 1107337A
Authority
GB
United Kingdom
Prior art keywords
conoid
apex
june
region
sealed
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
GB2579265A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1107337A publication Critical patent/GB1107337A/en
Expired legal-status Critical Current

Links

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
    • 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
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/335—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with continuity at the junction between adjacent areas
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/30—Envelopes; Vessels incorporating lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

1,107,337. Sealed - beam headlamps. ROBERT BOSCH G.m.b.H. 18 June, 1965 [20 June, 1964], No. 25792/65. Heading H1F. [Also in Division F4] In a sealed beam headlamp the reflecting surface has the form of a particular conoid of revolution over the whole of its area except in the region of its apex where it has a different form, and a dipped beam filament is mounted in front of the focus of the conoid. Preferably the conoid is a paraboloid and the area in the region of its apex is a cone.
GB2579265A 1964-06-20 1965-06-18 Improvements in headlamps Expired GB1107337A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1622402 1964-06-20

Publications (1)

Publication Number Publication Date
GB1107337A true GB1107337A (en) 1968-03-27

Family

ID=5682643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2579265A Expired GB1107337A (en) 1964-06-20 1965-06-18 Improvements in headlamps

Country Status (2)

Country Link
DE (1) DE1622402B1 (en)
GB (1) GB1107337A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493806A (en) * 1966-03-19 1970-02-03 Philips Corp Dual-beam incandescent lamp

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE331619C (en) * 1919-03-15 1921-01-11 Wilhelm Volkmann Electric incandescent lamp with a cone-shaped reflector
FR587639A (en) * 1923-12-29 1925-04-21 Anti-blinding light projector, in particular for motor vehicles
DE494589C (en) * 1926-08-14 1930-03-25 David Edward William Rees Dimmable headlight
US1714304A (en) * 1927-11-04 1929-05-21 Donald R Fruchey Light diffuser for headlights
US2246808A (en) * 1939-05-15 1941-06-24 Chrysler Corp Vehicle lamp
US2340515A (en) * 1940-06-03 1944-02-01 Dietrich Friedrich Richard Reflector for headlights
DE1087543B (en) * 1957-05-22 1960-08-25 Gen Motors Corp Method and device for manufacturing a headlight bulb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3493806A (en) * 1966-03-19 1970-02-03 Philips Corp Dual-beam incandescent lamp

Also Published As

Publication number Publication date
DE1622402B1 (en) 1969-09-11

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