GB1159936A - Improvements in or relating to Vehicle Headlights - Google Patents

Improvements in or relating to Vehicle Headlights

Info

Publication number
GB1159936A
GB1159936A GB3899866A GB3899866A GB1159936A GB 1159936 A GB1159936 A GB 1159936A GB 3899866 A GB3899866 A GB 3899866A GB 3899866 A GB3899866 A GB 3899866A GB 1159936 A GB1159936 A GB 1159936A
Authority
GB
United Kingdom
Prior art keywords
axis
filament
light
focus
parabola
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
GB3899866A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1159936A publication Critical patent/GB1159936A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F21S41/33—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
    • 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
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • 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

1,159,936. Vehicle headlamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 1 Sept., 1966 [4 Sept., 1965], No. 38998/66. Heading F4R. [Also in Division H1] A vehicle headlamp comprises a first reflector part 1 formed by revolving a parabola about an axis X substantially parallel to the axis IX of the parabola and a second reflector part 2 formed as a paraboloid with axis XI. The zone of contact between the parts may lie in a single horizontal plane or in two planes which intersect along the axis X and one of which is inclined at 15 degrees below the horizontal. A screen 14 shaped as half a right circular cylinder extends from the vertex of the part 1 to the plane V containing the locus of the focus of the generating parabola, the semi-circular end of the screen coinciding with this locus, and a first filament 15 extending along the axis X is situated so that the greater portion of its length is disposed on the opposite side of the plane V from the screen. A second filament 23 passes through the focus 22 of the reflector part 2, and may lie on the axis XI or be inclined, e.g. at right angles, to this axis. The closure glass 3 (Fig. 2, not shown) is designed to spread the light horizontally, the lower half of the glass having an annular edge zone (31) which spreads the light more than the upper half (33), and this half in turn spreading the light more than the remainder (32) of the lower half. The end 16 of the filament 15 is disposed on the line joining the focus 22 to the lower edge 24 of the reflector part 2, so that light emitted by the filament 15 and reflected by the part 2 is directed downwardly. The lamp may be of the sealed beam type or may employ two iodine bulbs.
GB3899866A 1965-09-04 1966-09-01 Improvements in or relating to Vehicle Headlights Expired GB1159936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6511569A NL6511569A (en) 1965-09-04 1965-09-04

Publications (1)

Publication Number Publication Date
GB1159936A true GB1159936A (en) 1969-07-30

Family

ID=19794054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3899866A Expired GB1159936A (en) 1965-09-04 1966-09-01 Improvements in or relating to Vehicle Headlights

Country Status (7)

Country Link
AT (1) AT272459B (en)
CH (1) CH453921A (en)
DE (1) DE1497318A1 (en)
ES (1) ES330854A1 (en)
FR (1) FR1583706A (en)
GB (1) GB1159936A (en)
NL (1) NL6511569A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162625A (en) * 1984-07-31 1986-02-05 Stanley Electric Co Ltd Headlamp for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162625A (en) * 1984-07-31 1986-02-05 Stanley Electric Co Ltd Headlamp for vehicle

Also Published As

Publication number Publication date
FR1583706A (en) 1969-12-05
CH453921A (en) 1968-03-31
NL6511569A (en) 1967-03-06
DE1497318A1 (en) 1969-06-04
ES330854A1 (en) 1967-09-16
AT272459B (en) 1969-07-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees