GB1347126A - Reflector-type electric lamps - Google Patents

Reflector-type electric lamps

Info

Publication number
GB1347126A
GB1347126A GB3872371A GB3872371A GB1347126A GB 1347126 A GB1347126 A GB 1347126A GB 3872371 A GB3872371 A GB 3872371A GB 3872371 A GB3872371 A GB 3872371A GB 1347126 A GB1347126 A GB 1347126A
Authority
GB
United Kingdom
Prior art keywords
reflector
segment
lamp
segments
optical axis
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
GB3872371A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1347126A publication Critical patent/GB1347126A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/30—Envelopes; Vessels incorporating lenses
    • 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
    • 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • 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
    • F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F21S41/435—Hoods or cap-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters

Landscapes

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

Abstract

1347126 Vehicle headlamp WESTING- HOUSE ELECTRIC CORP 18 Aug 1971 [1 Oct 1970] 38723/71 Heading F4R [Also in Division H1] A vehicle headlamp comprises a unitary concave reflector having an inner surface defined by two hemiparabolic reflector segments which are displaced from one another in a longitudinal direction and merge in a step along the medial plane of the reflector and has a light source located between the foci of the segments such that light rays from the segments give two superimposed beams of equal intensity. In an embodiment (Fig. 2) a moulded glass reflector 15 having a coating of aluminium has a filament 20 located between the foci F 17 and F 16 of the hemiparaboloids 16, 17. The angle of convergence α of the beam from segment 16 is the same as the angle of divergence # of the beam from segment 17 and thus two superimposed beams are produced (Fig. 1, not shown). The stepped reflector may be used in association with a tungsten filament (Fig. 2) or a quartz halogen light source (Figs. 11, 12 and 15, not shown) and may form part of a sealed-beam lamp (Figs. 4, 5a, and 12, not shown) or be formed from a pressed-metal sheet and have a translucent cover (Fig. 15, not shown). The filament may lay across (Figs. 4 and 5a, not shown) or along (Figs. 12 and 15, not shown) the optical axis of the reflector. The centre of the filament may be off-set to one side of the optical axis (Fig. 5b and 6, not shown) and may be raised above the horizontal medial plane of the reflector (Fig. 5c, not shown). In another embodiment, Fig. 3, the focal lengths of the segments 16a, 17a are unequal, the optical axis of segment 16a coincides with the geometrical axis X-X of the reflector but the optical axis O-O of segment 17a is set at an angle to the axis X-X. In some embodiments a fully or partially vertically fluted translucent member is used to close-off the lamp. The flutings may be evenly distributed across the member (Fig. 10, not shown) or of differing width and radii (Figs. 14 and 14b, not shown) for use in fog lamps. Where a partially fluted member is used, Fig. 13, the periphery 51 may be amber. Lighting systems utilizing the above lamps comprise four headlamps on the front of a vehicle grouped in two pairs on a horizontal line (Fig. 7, not shown) the outer lamp of each pair (38) comprising a single beam lamp, one of the other lamps (40) comprising a spot lamp and the other (22a) comprising a dual-segment lamp. In another lighting system (Fig. 16, not shown) two sets of three headlamps are used, a headlamp (65) on either side having a dual-segment reflector, the other headlamps having single or dual filaments.
GB3872371A 1970-10-01 1971-08-18 Reflector-type electric lamps Expired GB1347126A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7709270A 1970-10-01 1970-10-01

Publications (1)

Publication Number Publication Date
GB1347126A true GB1347126A (en) 1974-02-27

Family

ID=22136023

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3872371A Expired GB1347126A (en) 1970-10-01 1971-08-18 Reflector-type electric lamps

Country Status (3)

Country Link
US (1) US3688149A (en)
CA (1) CA949942A (en)
GB (1) GB1347126A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150684A (en) * 1983-11-09 1985-07-03 Westfaelische Metall Industrie Dipped vehicle headlamp

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4149229A (en) * 1976-06-18 1979-04-10 Lucas Industries Limited Lamp reflector with downwardly-facing step
GB2000266B (en) * 1977-06-17 1982-01-27 Lucas Industries Ltd Lamp reflector for a motor vehicle
US4271459A (en) * 1979-01-17 1981-06-02 Lucas Industries Limited Vehicle headlamp assembly
FR2460442A1 (en) * 1979-06-29 1981-01-23 Cibie Projecteurs NEW PROJECTOR STRUCTURE, IN PARTICULAR OF AUTOMOTIVE PROJECTOR
EP0099607B1 (en) * 1982-07-23 1986-04-23 Koninklijke Philips Electronics N.V. Electric reflector lamp
US4555748A (en) * 1982-10-28 1985-11-26 General Electric Company Truncated motor vehicle headlamp
US4566056A (en) * 1984-03-08 1986-01-21 Stanley Electric Co., Ltd. Headlamp for vehicle
US4682072A (en) * 1984-07-26 1987-07-21 Stanley Electric Co., Ltd. Headlamp for vehicle
JPS6258502A (en) * 1985-08-10 1987-03-14 スタンレー電気株式会社 Compound reflecting mirror for head lamp
DE3628441C2 (en) * 1986-08-21 1994-02-03 Bosch Gmbh Robert Low beam headlights for motor vehicles
US4754373A (en) * 1986-10-14 1988-06-28 General Electric Company Automotive headlamp
US4868458A (en) * 1988-02-18 1989-09-19 General Electric Company Xenon lamp particularly suited for automotive applications
GB8903738D0 (en) * 1989-02-18 1989-04-05 Carello Lighting Plc Lamp reflector
US5128851A (en) * 1989-12-19 1992-07-07 General Electric Company Vibration resistant mount structure for double ended tungsten-halogen lamp
KR20040021472A (en) * 2002-09-04 2004-03-10 삼성전자주식회사 Light illumination system and display device employing it
US7230382B2 (en) * 2003-04-21 2007-06-12 Matsushita Electric Industrial Co., Ltd. High pressure mercury lamp with vented reflector and image projection apparatus
PL1629231T3 (en) * 2003-05-23 2008-09-30 Volkswagen Ag Headlight or light for a motor vehicle
US7772750B2 (en) * 2006-08-24 2010-08-10 General Electric Company Large PAR lamp exhibiting excellent color with improved efficacy and life
JP5673510B2 (en) * 2011-11-29 2015-02-18 豊田合成株式会社 Vehicle headlamp
USD1020508S1 (en) * 2019-11-21 2024-04-02 Xinxin Shan LED directional lighting device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362172A (en) * 1943-03-25 1944-11-07 Swanson Harold Vehicle headlight with integral full-beam electric lamps
GB1221947A (en) * 1967-08-16 1971-02-10 Lucas Industries Ltd Lamps for road vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150684A (en) * 1983-11-09 1985-07-03 Westfaelische Metall Industrie Dipped vehicle headlamp
US4612608A (en) * 1983-11-09 1986-09-16 Westfalische Metall Industrie Kg Hueck & Co. Dimmed vehicle headlight

Also Published As

Publication number Publication date
CA949942A (en) 1974-06-25
US3688149A (en) 1972-08-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee