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Publication numberUS1676463 A
Publication typeGrant
Publication dateJul 10, 1928
Filing dateSep 2, 1924
Priority dateSep 2, 1924
Publication numberUS 1676463 A, US 1676463A, US-A-1676463, US1676463 A, US1676463A
InventorsRyan Walter D Arcy
Original AssigneeRyan Walter D Arcy
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Headlight
US 1676463 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

July "1o, 192s. l

W. DA. RYAN -gEADLIcIHT Filed Sept. 2, 1924 NFL Invent@ mamma vafa b9 Q' H ALLOrr-xeuj.

Patented lJuly l0, i928.

- NLerenti WALTER DARCY RYAN, 0F SCHENECTADY, YORK.

HEADLIGHT.

Application filed September 2, 1924. Serial No. 735,407.

My invention relates to improvements in headlights,` and is particularly concerned with improvements in headlights for use upon automobiles and other automotive vehicles. f

In Patent N o. 1,484,309, granted me February 19, 1924, I have disclosed a novel type of headlight, making use of a shallow reflector, and by means of which the roadway ahead of al vehicle is adequately illuminated, and at the. same time the areas adjacent the vehicle, and at the side of the road are also illuminated sufficiently to enable the driver to observe the signposts, and other objects at the side of the road,

One of the objects of my present invention is to provide a headlight that will produce substantially the same kind of illumi` nation as that produced by the headlight disclosed in my lpatent, above referred to, to provide a headlight that will adequately illuminate the areas adjacent the front of the vehicle, and the sides of the road.

' Another object in my invention is to provide a headlight of the character described that will even produce illumination to the rear of the headlight so as to illuminate the forward portion of the vehicle by which the headlight is carried, and also to provide illumination ahead of the vehicle when it turns into a cross-road.

A further object in my invention is to produce a headlight of the character described that is simple in construction, economical to manufacture, and rugged.

`Other objects in my invention will appear as this description progresses, reference being had to the accompanying drawings, in which:

Figure 1 is a side elevation, partially in section, of my improved headlight.

Figure 2 is an end elevation.

Figure 3 is a sectional detail showing a modification of the auxiliary reflector.

Referring to the drawings, and in particular to Figures l and 2, my improved headlight comprises a housing or casing 2 provided with a door, comprising a supporting ring 3, that may be hingedl` or otherwise suitably mounted, upon the casing 2. The

supporting rin 3, carries'the bowl shaped lens 4, that is eld in place by clips 5, se-

` cured to the ring 3, and resting against the edge of the lens. A reflector 6 that may be of metal, glass, or any. other suitable material, is mounted withm the collar 9 carried by t-he casing clamping ring 10.

A socket 7 is mounted in the bottom of the reflector 6 for receiving the electric lamp 8., the filament of which is located substantially at the focus of the reflector 6.

A conoidal reflector 11 is secured to the central portion of the lens 4 by means of a screw 12, or in any other suitable manner, with the reflecting surface disposed toward the main reflector 6. However, the reflecting surface of the reflector 11 may be, paraboloidal,lellipsoidal or of any other curvature, as circumstances mayrequire.

2 and held in place by the By making use of an auxiliary conoidal reflector such as described above, I provide a construction whereby the rays of light issuing from the source 8, substantially directly forwardly, are reflected through the lens in a lateral and rearward direction as indicated by the arrows in Figure 1. Those rays from the source of light that strike thev main reflector 6 are reflected insubstantially parallel relation, so as toprovide an adequate beam of light for illuminating the roadway ahead of the vehicle. The auXil-4 iary reflector 11, not only provides means for reflecting the rays towards the side of the roadway, and toy the rear of the headlight, but also acts as a screen to prevent approaching drivers from being blinded by the v rays issuing directly from the'fila'ment of the lamp.

The top and bottom portions of the conoidal reflector 1l are cutaway as indicated at 16, so as to reflect only a portion of the direct rays of light issuing from the lamp 8, and these' portions are reflected laterally,

or to the sides of the road. This permits direct rays of lightfrom the source to pass through the top and bottom of the auxiliary reflector, to assist in the illumination of the roadway ahead of the vehicle.

In the modified form of my invention shown in Figure 3, thel'lens 4 is providedwith a central conoidal depression 17, that may be silvered or otherwise treated to form a reflecting surface. This reflecting surface Will then perform the same functions as the reflecting surface of the auxiliary reflector 11, described above. While I have described the details of construction of the preferred embodiments of my invention, it is to be clearly understood that my invention is not limited to these details, but is capable of other adaptations and modifications Within the scope of the appended claims. It is to be further understood that the main reflector may be paraboloidal, hyperboloidal, ellipsoidal, or any other suitable curvature.

Having thus described my invention, what I claim is:

1. A headlight comprising a reflector, a

' lens for said reflector, a source of light in said reflector, and an auxiliary reflector carried by the central portion of said lens, for reflecting the light from said source through marginal portions of said lens, the top and bottom portions of said auxiliary reflector l5 being cut away to permit the passage forsaid reflector, and an auxiliary reflector car- 20 ried by the central portion of said lens for reflecting light from said-source through marginal portions of said lens, a portion of said auxiliary reflector being cut away to permit the passage forwardly of direct rays 25 of light from said source.

In witness whereof, I hereunto subscribe my name this 5th day of August, 1924.

WALTER DARCY RYAN.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2469412 *Mar 29, 1945May 10, 1949Carl B RoebkenTherapeutic lamp
US3054888 *Jul 7, 1961Sep 18, 1962Yamashita IsaoPassing light system for motor vehicles
US3610912 *Aug 14, 1968Oct 5, 1971Varian AssociatesLow profile optical system
US5705804 *Jan 23, 1996Jan 6, 1998Science Applications International CorporationQuadrant light detector
US5733028 *Jan 23, 1996Mar 31, 1998Advanced Optical Technologies, Llc.Apparatus for projecting electromagnetic radiation with a tailored intensity distribution
US5773819 *Jan 23, 1996Jun 30, 1998Advanced Optical Technologies, Llc.Single element light detector
US5886351 *Feb 20, 1998Mar 23, 1999Advanced Optical Technologies, LlcSingle element hemispherical light detector
US6036335 *Sep 29, 1997Mar 14, 2000Openiano; Renato M.Cut-to-length linear lighting, and two-dimensional and three-dimensional decorative lights, from omni-directional LED lamps
US6043873 *Jan 10, 1997Mar 28, 2000Advanced Optical Technologies, LlcPosition tracking system
US6088091 *May 12, 1998Jul 11, 2000Advanced Optical Technologies, LlcPosition tracking system
US6238077Sep 16, 1999May 29, 2001Advanced Optical Technologies, L.L.C.Apparatus for projecting electromagnetic radiation with a tailored intensity distribution
US6266136Feb 14, 2000Jul 24, 2001Advanced Optical Technologies, LlcPosition tracking system
US6543911 *May 8, 2000Apr 8, 2003Farlight LlcHighly efficient luminaire having optical transformer providing precalculated angular intensity distribution and method therefore
US7744246May 7, 2001Jun 29, 2010Farlight, LlcPortable luminaire
US8220959 *May 14, 2010Jul 17, 2012Farlight LlcHighly efficient luminaire having optical transformer providing precalculated angular intensity distribution and method therefore
US8360615Oct 31, 2007Jan 29, 2013Farlight, LlcLED light module for omnidirectional luminaire
Classifications
U.S. Classification362/305
International ClassificationF21V7/00
Cooperative ClassificationF21S48/1388
European ClassificationF21S48/13D16