GB327540A - Improvements in or relating to vehicle head-lamps - Google Patents

Improvements in or relating to vehicle head-lamps

Info

Publication number
GB327540A
GB327540A GB725829A GB725829A GB327540A GB 327540 A GB327540 A GB 327540A GB 725829 A GB725829 A GB 725829A GB 725829 A GB725829 A GB 725829A GB 327540 A GB327540 A GB 327540A
Authority
GB
United Kingdom
Prior art keywords
reflector
axis
vehicle
parabolic reflector
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
GB725829A
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.)
WILFRID HERBERT LUND
WILLIAM CHARLES HOWARD
Original Assignee
WILFRID HERBERT LUND
WILLIAM CHARLES HOWARD
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 WILFRID HERBERT LUND, WILLIAM CHARLES HOWARD filed Critical WILFRID HERBERT LUND
Priority to GB725829A priority Critical patent/GB327540A/en
Publication of GB327540A publication Critical patent/GB327540A/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
    • F21S41/30—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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39—Attachment thereof
    • 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

327,540. Lund, W. H., and Howard, W. C. March 6, 1929. Addition to 288,898. Reflectors; mounting reflectors on lamp casings.-In a vehicle lamp in which the reflector comprises a lower parabolic portion combined with an upper curved portion adapted to diffuse laterally a short range beam of light over a wide angle immediately in front of the vehicle, as described in the parent Specification, the curved surface is formed as a separate sheet metal pressing, stamping, or spinning adapted to be detachably secured in position in front of the upper part of a standard parabolic reflector. The curved surface b is preferably in the form of a frustum of a hollow cone divided in the plane of its axis and with its rear edge meeting the main reflector in a vertical plane containing, or just behind, the focus and at right-angles to the axis of the parabola. The surface b is of such length and inclination that all rays of light reflected therefrom are directed clear of the front edge of the parabolic reflector. The surface b may merge into a half ring a soldered or otherwise secured to a flanged circular rim f adapted to be clamped between the front glass and the front edge of the parabolic reflector. The half ring a may be flat or convex, and it may be formed with concentric ribs, steps, or corrugations. The surface b mav be continued in a vertical or rearwardly inclined step c leading to a concave curved part d of approximately quarter spherical shape and cut away at e to accommodate an electric lamp holder. The part d extends downwardly and rearwardly to the horizontal plane containing the axis of the parabola and is adapted to project a beam of light downwardly on to the road immediately in front of the vehicle.
GB725829A 1929-03-06 1929-03-06 Improvements in or relating to vehicle head-lamps Expired GB327540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB725829A GB327540A (en) 1929-03-06 1929-03-06 Improvements in or relating to vehicle head-lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB725829A GB327540A (en) 1929-03-06 1929-03-06 Improvements in or relating to vehicle head-lamps

Publications (1)

Publication Number Publication Date
GB327540A true GB327540A (en) 1930-04-10

Family

ID=9829660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB725829A Expired GB327540A (en) 1929-03-06 1929-03-06 Improvements in or relating to vehicle head-lamps

Country Status (1)

Country Link
GB (1) GB327540A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121947A (en) * 1982-06-09 1984-01-04 Cibie Projecteurs Dipped headlamp for automobiles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121947A (en) * 1982-06-09 1984-01-04 Cibie Projecteurs Dipped headlamp for automobiles

Similar Documents

Publication Publication Date Title
GB327540A (en) Improvements in or relating to vehicle head-lamps
US2171336A (en) Nonglare reflector
US2012338A (en) Reflector for lamps
US2632842A (en) Sealed headlight having auxiliary reflector
US2035215A (en) Reflector
US1677678A (en) Headlight
US1843154A (en) Conveyance lamp
US2185438A (en) Automobile headlight
US1238484A (en) Reflector.
US1974388A (en) Lamp and automobile headlight
US1802524A (en) Lamp
US1543079A (en) Combination tail lamp
US1680037A (en) Antiglare attachment for headlights
US1520475A (en) Light deflector
GB193439A (en) Improvements in, or relating to lamps, searchlights and the like
GB513790A (en) Improvements in and relating to incandescent electric lamps for motor vehicle headlights
GB288898A (en) Improvements in or relating to vehicle head-lamps
US1415373A (en) Automobile headlamp
US3247416A (en) Headlight for cars
US1655103A (en) Headlight
US1430433A (en) Headlamp for automobiles
US1403280A (en) Headlight
US1999481A (en) Antiglare headlight attachment
GB997477A (en) Vehicle lamps
US1560812A (en) Headlight attachment