US1354699A - Non-glare headlight - Google Patents

Non-glare headlight Download PDF

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Publication number
US1354699A
US1354699A US210594A US21059418A US1354699A US 1354699 A US1354699 A US 1354699A US 210594 A US210594 A US 210594A US 21059418 A US21059418 A US 21059418A US 1354699 A US1354699 A US 1354699A
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Prior art keywords
reflector
headlight
glare
rays
curve
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Expired - Lifetime
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US210594A
Inventor
Thomas B Shanahan
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LEGAL LEVEL LIGHT CO
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LEGAL LEVEL LIGHT CO
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Priority to US210594A priority Critical patent/US1354699A/en
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Publication of US1354699A publication Critical patent/US1354699A/en
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    • 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
    • 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

Definitions

  • This invention has for its object a nonglare reflector forthe headlights of motor cars which is particularly simple and economical in construction and Ahighly efficient in use; and the invention consists in the novel features and in the combinationsl and constructions, hereinafter set forth and claimed.-
  • igure l is a ⁇ vertica sectional View of a headlight embodying my invention.
  • Fig. 2 is a face View of the reflector.
  • the l designates the headlight, and 2, the concave or parabolic reflector thereof, the reiector having a passage 3 at its rear end in axial alineinent with its focal axis, for supporting a lamp socket 4 which receives the plug of the incandescent electric lamp 6 is a supplemental reflector forming part of the niain reilector 2 and located at the central portion or zone of the major surface of the reflector at one side of the focal axis and within the curve of the major surface of the reflector 2, the supplemental surface .6 being usually located below such focal axis so as to project forwardly, in a shaft of parallel rays, rays that would'otherwise strike the lower maior surface and loe diffused thereby.
  • the glare from head* lights is due to the rays projected from the rays of light passing upwardly to the upper portion of the reflector are thrown downwardly and hence do not strike the eyes of pedestrians or of the drivers' of approachu ing cars.
  • the non-glare surface 6 is Vsphei'ically ⁇ curved. and as here show' it is substantially a quarter of a sphere nd yfhields or en- Specicaticn of Letters Patent.
  • pockets'in which the electric bulbs have been located have been depressed or located in the rear of the curve of the main or major surface of the reflector.
  • the rays of light which ordinaril would strike the lower entrai portion of the reflector are projected forwardly in a horrental shaft of substantially paallel rays which are too low down to strike the eyes of pedestrians or the drivers of approaching cars within striking distance of the car provided with my headlight; and the light that in ordinary headlights blinds the pedestrians or the drivers of approaching cars, is projected by the surface 6 forwardly in a line below the eyes of pedestrians or drivers and lights the road farther ahead than head* lights unprovided with the, surface 6.
  • he rays of light from the non-glare face 5 strike the the driver of an sureyes of a pedestrian or of approaching car, if at all, only when he is too far in front of the car to he in danger of being struck by the car.
  • a concave reflector having a. portion of its wall at one side and adacent to its focal axis projected into the re, actor, said portion being formed with a depressed auxiliary' rem fleeting surface adjacent the focal axis and located within the curve of the reflector; the remainder of the reflector being located in. said curve and the portion of the reflector near the front edge of the auxiliary reflecting surface meeting said front edge, substantially as and for the pur ose described.

Description

T. B. SHANAHML summe HEAnLlGH.
APPLICATION FILED IAN. I9I8.
Patented Oct.' 5, 1920 central zone or portion of the reflector. The' `roe and State of New unirn' STATES PATENT OFFICE.
THOMAS I3. SHANAHAN, OF RCHESTER, 'NEVI YORK,
ASSG-NOR TO LEGAL LEVEL LIGHT 630., OF ROCHESTER, YORK, CORPORATION GF NEW YORK.
N N-GLARE HEADLIGHT.
'fo zu whom t may conce/rnv:
Be it lrnown that l, THOMAS B. SHANA- HAN, a citizen of the United States, and a resident of Rochester, in the conn-ty of Mon- York, have invented a certain nen7 and useful Non-Glare Headlight, of which the following is a specification. I
This invention has for its object a nonglare reflector forthe headlights of motor cars which is particularly simple and economical in construction and Ahighly efficient in use; and the invention consists in the novel features and in the combinationsl and constructions, hereinafter set forth and claimed.-
ln describing this invention, reference is iad to the accompanying drawings in which like characters designate corresponding parts in all of the views.
igure l is a` vertica sectional View of a headlight embodying my invention; and
Fig. 2 is a face View of the reflector.
l designates the headlight, and 2, the concave or parabolic reflector thereof, the reiector having a passage 3 at its rear end in axial alineinent with its focal axis, for supporting a lamp socket 4 which receives the plug of the incandescent electric lamp 6 is a supplemental reflector forming part of the niain reilector 2 and located at the central portion or zone of the major surface of the reflector at one side of the focal axis and within the curve of the major surface of the reflector 2, the supplemental surface .6 being usually located below such focal axis so as to project forwardly, in a shaft of parallel rays, rays that would'otherwise strike the lower maior surface and loe diffused thereby. It will he understood that the glare from head* lights is due to the rays projected from the rays of light passing upwardly to the upper portion of the reflector are thrown downwardly and hence do not strike the eyes of pedestrians or of the drivers' of approachu ing cars.
The non-glare surface 6 is Vsphei'ically` curved. and as here show' it is substantially a quarter of a sphere nd yfhields or en- Specicaticn of Letters Patent.
central portion of the main or4 Patented Getn 5, 1920s serial nu. 210,594.
circles the rear lower quarter of the bulh of the incandescent electric lamp. The surface is located within the curve of the remainder of the reflector and said remainder is located throughout itsextent .in said curve and the portion. adjacent the front end of the auxiliary reflector meets such front edge instead of extending under and behind it.
Heretofore, pockets'in which the electric bulbs have been located have been depressed or located in the rear of the curve of the main or major surface of the reflector.
In my headlight, owing to the location of the' non-glare surface and to the curvature thereof, the rays of light which ordinaril would strike the lower entrai portion of the reflector are projected forwardly in a horrental shaft of substantially paallel rays which are too low down to strike the eyes of pedestrians or the drivers of approaching cars within striking distance of the car provided with my headlight; and the light that in ordinary headlights blinds the pedestrians or the drivers of approaching cars, is projected by the surface 6 forwardly in a line below the eyes of pedestrians or drivers and lights the road farther ahead than head* lights unprovided with the, surface 6.
he rays of light from the non-glare face 5 strike the the driver of an sureyes of a pedestrian or of approaching car, if at all, only when he is too far in front of the car to he in danger of being struck by the car.
What l claim is:
A concave reflector having a. portion of its wall at one side and adacent to its focal axis projected into the re, actor, said portion being formed with a depressed auxiliary' rem fleeting surface adjacent the focal axis and located within the curve of the reflector; the remainder of the reflector being located in. said curve and the portion of the reflector near the front edge of the auxiliary reflecting surface meeting said front edge, substantially as and for the pur ose described.
In testimony whereof I ave hereunto signed my neme at Syracusel in the county oi Ononda a and State of New York, this 5th day of ecember. 1917,
US210594A 1918-01-07 1918-01-07 Non-glare headlight Expired - Lifetime US1354699A (en)

Priority Applications (1)

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US210594A US1354699A (en) 1918-01-07 1918-01-07 Non-glare headlight

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US210594A US1354699A (en) 1918-01-07 1918-01-07 Non-glare headlight

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