US1261570A - Non-glaring headlight. - Google Patents

Description

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AP 27. 1917. 1 ,261,570. Patented Apr. 2, 1918.

EARLE s. LYON, or NEW YORK, N. Y.

NON-GLARING HEADLIGHT.

Speciflcation of Letters Patent.

Patented Apr. 2, 1918.

Application filed November 27, 1917. Serial No. 204,244.

To all whom t may conccr'n:

Be it known that I, EARLE S. LYON, citizen of -the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Non-Glaring Headlights; and I do hereby declare the following to be a full, clear, and exact: de-l scription of the invention, such as willr enable others skilled in the art to which it appertains to make and use the same.

My-invention relates to non-glaring headlights and more particularly to that class of headlight used in connection with motor vehicles and it has for its main object the provisionof a simple and inexpensive de-` vice -which may be easily detachably secured to a lamp, and which may be applied to any lamp of standard make.

Another object is to provide a novel and improved attachment to headlights embodyin a Structure whereby the light rays are di used, and their direct passage through the glass is reduced to a minimum, so that an intense glare is entirely eliminated.

It is necessary, in order to aocomplish m purpose, that certain of the light rays which are transmitted through the lens be eliminated or diifused, as ordinances in force in various localities provide in efiect that no direct light rays shall be transmitted from a headlight, which will encounter the eyes of the driver of another vehicle or of a pedestrian at a certain distance from the headlight. Therefore, another object of m invention is to provide a device which W111 accomplish4 the ,purpose stated, and will at the same time, be very economical in construction and convenient in application. It will be obvious also that my invention may be applied to light Sources other than vehicle lamps, for the purpose of preventing glare.

A further object is to provide'an improved shield adapted to be placed 1n front of the source of light for preventmg a blinding glare issuing from the lamp but permitting substantially the sameamount of illuminating rays to cmanate as in lamps not equipped with my improvement.

With the foregoing objects outlined and with other objects in view, my invention consists in the novel features hereinafter described in detail, illustrated in the accompanying drawing, and more particularly pointed out in the appeuded claim.

Referring to the drawing:--

Figure 1 is a sectional view through an ordinary headlight, showing one form of my improved shield attached thereto.

Fig.v 2 is a front view of one form of my shield.

F ig. 3 is a front view, partly broken away, of another form of my shield.

In the drawings, 1 designates an ordinary headlight having a parabolic reflector 2, a source of light 3, a cover/l and a lens 5. My improved shield 6 is preferably placed against the rear surface of the lens and forward of the source of light.

The shield shown in Figs. 1 and 2 .consists of an opaque plate, preferably of metal, provided with a series of small apertures 7, preferably concentrically arranged,

which in this instance, covers approximately the entire area of the plate with solid portions of the plate between said apertures. The rear side 8 of the plate is highly polishedand acts as an au'xiliary reflector for causing a considerable part of the light, reflec'ted by the parabolic reflector of the lamp, to be reflected back to the parabolic reflector and finally find'its way out through the small apertures 7 of thev plate. It will be seen that the apertured. plate arranged in front of the parabolic refiector Will difi'use the rays from said reflector and eliminate the dazzling glare, but in order that the lamp may be as powerful as :one without the shield, I have polished the rear face of the plate so that a large portion of the rays will be reflected back to the parabolic refiector and thus intensified, so that the light rays lost through the intervention of the shield, will not. afi'ect the illuminating power of the lamp. By my improved shield I am enabled to obtain the same amount of light from the lamp, without the dazzling or blinding glare.

Also by arranging the small apertures in concentric circles with the solid portions between, I am enabled to dilfuse the light from the parabolic reflector without appreciably diniinishing its penetrating powers. The rays from a parabolic refiector-are thrown in a circle and .my concentric arrangement of the apertures, Will be eflicient in thoroughly difusing these rays and eliminating the glare.

The shield shown in Fig. 3, is exactly the same as that shown in Figs. 1 and 2, with the exception that I have rovided a large aperture 10 at the center of? the shield and surrounded the same With a series of conoentrically arranged apertures 11, which are smaller in diameter thanthe aperture 10, and larger in diameter than the apertures 7. This form of shieldwhile avoiding the blinding glare from the lamp, Will permit intensified rays to pass unobstructed through the central portion of the shield and provide greater illumination directly in line with the center of the lamp, than a lamp not provided With this form of shield.

nemato I also preferably bprovide a dull finish on the front face 12, of the Shields, so that they will not reflect the sunlight during the daytime. v t

What I claim and desire to secure by Letters Patent is The combination with a lamp having a parabolic refleotor, of an opaque shield arranged on one side of the lami lens, and provided at its center With a arge aperture, and between said aperture and the edge of the shield, With a series of concentrically arranged small apertures, said shield having its rear face polished to refiect a portion of the light rays'back to the reflector for intensifying the same.

In testimony whereof I afix my Signature.

EARLE S. LYON.

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