US1751934A - Antiglare reflector - Google Patents

Antiglare reflector Download PDF

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Publication number
US1751934A
US1751934A US26038328A US1751934A US 1751934 A US1751934 A US 1751934A US 26038328 A US26038328 A US 26038328A US 1751934 A US1751934 A US 1751934A
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US
United States
Prior art keywords
reflector
light
facets
polished
antiglare
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 - Lifetime
Application number
Inventor
Linton Reginald
Jarvis William John
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.)
EGARSOL GLARELESS REFLECTOR CO
EGARSOL GLARELESS REFLECTOR CO Ltd
Original Assignee
EGARSOL GLARELESS REFLECTOR CO
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 EGARSOL GLARELESS REFLECTOR CO filed Critical EGARSOL GLARELESS REFLECTOR CO
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Publication of US1751934A publication Critical patent/US1751934A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F21S41/30—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
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • 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

Definitions

  • This invention relates to anti-glare reflectors, employed in conjunction with a light source, preferably of the incandescent type, and is especially applicable to motor and other vehicles.
  • the objects of the invention are to provide a safe and efficient light for driving at night; to produce a soft widely diffused light directly in front of the vehicle; and at the same time a flat penetrating light extending ahead of the diffused light.
  • the light source is positioned as ordinarily at the focal point of the reflector which is capable of light projection forwardly or outwardly to a degree according to the candle power of said light source.
  • the reflector is capable also of illuminating objects on either side for a distance directly in front of the lamp, approximately equal to one fourth of the length of the visibility ahead. This side diflusion of light is of about equal intensity to that obtained forwardly of the lamp.
  • the illumination obtained from the reflector produces a carpet or spread of light free from shadow, and is entirely free from movement due to any motion of the vehicle when negotiating irregular surfaces.
  • the light projected from our reflector has the effect of reducing to a minimum glare or the blinding effects caused by the usual reflectors on the optic nerve.
  • the invention comprises a concave reflector embodying a differential degree of finish.
  • the area of the reflector from the apex to about half the distance from the base consists of a plurality of substantially rectangular polished facets, or independent mirror surfaces, inclined at suitable angles to each other, thus causing a series of beams or shafts of light reflected from each facet or mirror obtaining light from the light source.
  • These beams mingle with reflected light obtained from that area of the reflector where the facets or mirrors end, to its base, which consists of a matt, satin, or granulated finish, capable of projecting light in all directions.
  • left and right additional facets are included in an area equal to about one fourth, or one third of the total apex surface, and preferably gradually increasing in size from the centre outwardly.
  • Figure 1 is a plan view of the complete reflector showing the respective polished and matt surface portions.
  • Figure 2 is a section on the line 2-2 of Figure 1 showing the manner in which the polished surfaces are indented by pressing to form the facets.
  • Figure 3 is a perspective View looking on the rear side of the reflector and also showing themanner in which the facets are formed.
  • the reflector which has an inner concave surface is formed with a flange 4, and a central opening 5 to accommodate the usual lamp socket.
  • the central portion of the reflector has a plurality of highly polished or reflecting facets 6 disposed at an angle to one another, the remaining portion 7 of the reflector surface being matt or non-highly substantially rectangular polished except where additional or side facets 8 are provided for the purpose of producing a wide beam of light, in addition to a long penetrating beam from the central portion of the reflector.
  • our reflector in two parts, viz, an outer or rear shell formed or indented with facets on its inner face and an inner or front shell adapted to take in the former and having lateral cuts and a matt surface as described.
  • An anti-glare concavereflector comprising a plurality of substantially rectangular embossed transversely flattened and polished surfaces adjacent to the center of the reflector for the-purpose of-reflecting a beam of light from a light source within the reflectorythat will penetrate a long distance ahead, a mat or non-highly polished surface above and below the said embossed polished surfaces for producing a soft widely diffused beam of light directly in front of the reflector, and highly polished embossed transversely flattened portions disposed on each side of the central embossed portion, whereby a wide penetrating beam of light is reflected.
  • An anti-glare concave reflector coniprising a reflector body, a plurality of highly polished, substantially rectangular transversely flattened facets disposed within the central portionof said reflectorbody for the purpose of reflecting a penetrating beam of light from a light source within thereflector,

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

Description

March 25, 1930. L m ET AL ANTIGLARE REFLECTOR Filed March 9, 1928 Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE REGINALD LINTON AND WILLIAM JOHN JARVIS, 0F SYDNEY, AUSTRALIA, ASSIGNORS TO THE EGARSOL GLARELESS REFLECTOR CO. LTD., OF SYDNEY, AUSTRALIA, A COR- PORATION OF NEW SOUTH WALES ANTIGLARE REFLECTOR Application filed March 9, 1928, Serial No. 260,383, and in Australia November 3, 1927.
This invention relates to anti-glare reflectors, employed in conjunction with a light source, preferably of the incandescent type, and is especially applicable to motor and other vehicles.
Briefly stated the objects of the invention are to provide a safe and efficient light for driving at night; to produce a soft widely diffused light directly in front of the vehicle; and at the same time a flat penetrating light extending ahead of the diffused light.
The light source is positioned as ordinarily at the focal point of the reflector which is capable of light projection forwardly or outwardly to a degree according to the candle power of said light source. The reflector is capable also of illuminating objects on either side for a distance directly in front of the lamp, approximately equal to one fourth of the length of the visibility ahead. This side diflusion of light is of about equal intensity to that obtained forwardly of the lamp.
Further, the illumination obtained from the reflector produces a carpet or spread of light free from shadow, and is entirely free from movement due to any motion of the vehicle when negotiating irregular surfaces. The light projected from our reflector has the effect of reducing to a minimum glare or the blinding effects caused by the usual reflectors on the optic nerve.
According to the invention, it comprises a concave reflector embodying a differential degree of finish. The area of the reflector from the apex to about half the distance from the base, consists of a plurality of substantially rectangular polished facets, or independent mirror surfaces, inclined at suitable angles to each other, thus causing a series of beams or shafts of light reflected from each facet or mirror obtaining light from the light source. These beams mingle with reflected light obtained from that area of the reflector where the facets or mirrors end, to its base, which consists of a matt, satin, or granulated finish, capable of projecting light in all directions.
This is due to the multiplicity of minute reflecting surfaces on the matt or like area, also to the gradual disintegration of reflected light rays from each of the facets, combining with the total disintegration of light rays reflected from the matt surface and merging of the different degrees of reflected light.
hen we employ the apex of the reflector for the inclusion of highly burnished or plated facets or surfaces for use in lamps in a lateral or horizontal position, left and right additional facets are included in an area equal to about one fourth, or one third of the total apex surface, and preferably gradually increasing in size from the centre outwardly.
But in order that the invention may be more readily understood, reference will now be made to the accompanying drawings in which is illustrated a practical form of our reflector.
Figure 1 is a plan view of the complete reflector showing the respective polished and matt surface portions.
Figure 2 is a section on the line 2-2 of Figure 1 showing the manner in which the polished surfaces are indented by pressing to form the facets.
Figure 3 is a perspective View looking on the rear side of the reflector and also showing themanner in which the facets are formed.
The reflector which has an inner concave surface is formed with a flange 4, and a central opening 5 to accommodate the usual lamp socket.
The central portion of the reflector has a plurality of highly polished or reflecting facets 6 disposed at an angle to one another, the remaining portion 7 of the reflector surface being matt or non-highly substantially rectangular polished except where additional or side facets 8 are provided for the purpose of producing a wide beam of light, in addition to a long penetrating beam from the central portion of the reflector.
By this construction a soft widely diffused light is produced directly in. front of the car or other object to which the reflector is fitted, and owing to portion of the reflector having a matt surface the beams of light from the facets mingle with the reflected light from the matt surface and produce a practically glareless light.
We may construct our reflector in two parts, viz, an outer or rear shell formed or indented with facets on its inner face and an inner or front shell adapted to take in the former and having lateral cuts and a matt surface as described.
We claim:
1. An anti-glare concavereflector, comprising a plurality of substantially rectangular embossed transversely flattened and polished surfaces adjacent to the center of the reflector for the-purpose of-reflecting a beam of light from a light source within the reflectorythat will penetrate a long distance ahead, a mat or non-highly polished surface above and below the said embossed polished surfaces for producing a soft widely diffused beam of light directly in front of the reflector, and highly polished embossed transversely flattened portions disposed on each side of the central embossed portion, whereby a wide penetrating beam of light is reflected.
2. An anti-glare concave reflector, coniprising a reflector body, a plurality of highly polished, substantially rectangular transversely flattened facets disposed within the central portionof said reflectorbody for the purpose of reflecting a penetrating beam of light from a light source within thereflector,
a plurality of substantially rectangular, transversely, flattened and highly polished surfaces disposed on each side of the central portion ofthe reflector body for the purpose of reflecting a flat penetrating beam of "light,
and a mat or nonhighly polished surface disposed above and below the said highly polished surfaces for the purpose of reflecting asoft widely diffused beam of light close to the reflector.
In testimony whereof we have hereunto set our hands' REGINALD LINTON.
WILLIAM JOHN JARVIS.
US26038328 1927-11-03 1928-03-09 Antiglare reflector Expired - Lifetime US1751934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU1751934X 1927-11-03

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612616A (en) * 1949-11-22 1952-09-30 Joseph Maichin Vehicle headlight
US4158223A (en) * 1977-09-16 1979-06-12 Heath Tecna Corporation Low level diffusing reflector assembly
DE10338785A1 (en) * 2003-08-23 2005-03-17 Hella Kgaa Hueck & Co. Lighting device for vehicles
US6959933B1 (en) 2003-05-06 2005-11-01 Roth Edmund H Twin line skates
EP3385608A1 (en) * 2017-03-16 2018-10-10 HELLA GmbH & Co. KGaA Illumination device for vehicles

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612616A (en) * 1949-11-22 1952-09-30 Joseph Maichin Vehicle headlight
US4158223A (en) * 1977-09-16 1979-06-12 Heath Tecna Corporation Low level diffusing reflector assembly
US6959933B1 (en) 2003-05-06 2005-11-01 Roth Edmund H Twin line skates
DE10338785A1 (en) * 2003-08-23 2005-03-17 Hella Kgaa Hueck & Co. Lighting device for vehicles
EP3385608A1 (en) * 2017-03-16 2018-10-10 HELLA GmbH & Co. KGaA Illumination device for vehicles
US10253942B2 (en) 2017-03-16 2019-04-09 HELLA GmbH & Co. KGaA Lighting device for vehicles

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