US1245426A

US1245426A - Non-glaring headlight.

Info

Publication number: US1245426A
Application number: US13001816A
Authority: US
Inventors: John Bennett
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-11-07
Filing date: 1916-11-07
Publication date: 1917-11-06
Anticipated expiration: 1934-11-06

Description

Patented Nov. "6, 1917.

L BENNETT.

NOMQLARING HEADLIGHT. APPLICATION FILED NOV. l. 1916.

JOHN' BENNETT, OF` JEANNETTE,LPENNSYLVAIA.-

Nou-ennemie- Humanism:

To all whom' it may concern.'

.Be it known that I, JOHN BENNETT, a eltizen of tlieUnited States, residing at Jean-. --nette, in the county of Westmoreland and .State of4 Pennsylvania, have invented certain new and useful Improvements in Non- Glaring Headlights, of which the following is a specification. y

This invention relates to new and useful improvements in non-glaring head-light lens'l The primary object of the invention is the provision of a lens for head lights ob'viating all glare due to the intensity of the illuminating` body employed. A

A further object of the invention is to render head-lights upon vehicles such as autoinohiles less dangerous by directing the rays forwardly of the head-light in concentrated parallel horizontal planes. eliminating the usual glaring effectI of the concentrated rays from the parabolic reliector employed.

A still further object is the provision of a lens for head-lights arranged with annular portions concentrically disposed for paralleling and concentrating the horizontal reflected rays, the intervening portions of the lens being rovided with means for dimming and diffusing the angular rays from the reliector. y

ln the drawing forming a part of this aplication and in which like reference hharacters correspond to like parts throughout the several views.

Figure 1. is a central diainetrical sectional view through a head-light provided with the vpresent form of lens,

Fig. 2. is a rear elevation of a quarter see-Y tion of thelens and Fig. 3. is a front elevation ci quadrant thereof.

This invention relating to lenses for headlights, 'the saine is herein illustrated as a glass disk arranged in the usual manner in a head-light casing 11 provided with a parabolic reflector. 12 and an electric larnpr or bulb-13 centrally positioned therein, while a securing ring 14 is carried by the casing overlying` the lens with a connecting strip 15 positioned therebetween'.

The lens 10 has an annular marginal portion 16, while the remainder oi' the lens is formed of a. plurality ofalunular concentric waves 1.7 forming .concentrating lens por tions,

Specoation ofLcttersPatcait: n

Application led November '7, 1916,- Serial`No."130,18.

Patented Nov. 6, 19157.

i The lensllliisso positioned in the headlight as to arr-ange the convex faces 18 of the lens portion 17 inwardly of the headlight adjacent the reflector 1Q While'the annular concave faces 19 of said portion 17 are arranged outwardly and forwardly of the head-light as is illustrated in Fig. 1 of the drawing.

This arrangement of the waved portion of the lens provides annular Hat faces 20 between the concave portions 19 and such faces 20 are upon the forward outer side of the lens 10 all arranged in the same plane as the outer face of the marginal portion 16. The exposed outer face of said marginal portion 16 and all of the fiat faces 20 are preferably ground or suitably roughened or coated as shown in Fig. 3 of the drawing 'for diffusing all light reflected thereon emanating from the lamp 13 whereby such rays will be dimmed and while adording light upon the roadway will have no glaring effect to endanger traflic.

In Fig. 1 of the drawing a plurality of parallel horizontal rays reflected from the reflector 10 which have emanated from the lamp 13 are indicated at 21. Substantially the entire inner face of the lens 10 consists of lthe convex annular lens portions 18'and the rays 21 passing-through such portions 18 are refracted-convergently as at 22, passing outwardly forwardly of the lens 10 in concentrated parallel horizontal rays as shown at 23. The horizontal rays striking intermediate the convex faces 18 of the lens 10 and all angular rays from the reilector 20 which are not horizontally arranged pass through the flat ground faces at the forward side of the lens 1() being diffused as heretofore noted.

It will be understood that the parallel rays 21 and-23 are. arranged in what mi ht be ternied bundles of tubular formationgby reason of the concentric arrangement of the lens portion 1'?, such concentric tubular hundles of the rays 23 forwardly of' the headlight resulting in furnishing a brighter light for illuminating the roadway without' glaring or dazzling the eyes of' a beholder, all of which is by-reason of the fact that the rays 23 are horizontal rays and are not convergent uniting rays producing the usual blinding effect.

While the form of the lens as herein illustrated and described is believed to .be the preferable embodiment thereof, itis never theless understood that the. gist of the invention is the production of concentrated parallel rays by means of a lens and that changes may be made in the structure Without in any manner departing from the spirit and scope of the invention as hereinafter claimed.

What I claim as nev is:-

1. A lens formed of a disk of vitreous material having concentric convex lens portions at one side thereof and concentric concave portions 'at the` opposite side, the concave portions lying opposite and centrally of the convex portions and being of lesser ,Width than the corresponding convex portions. l

2. A lens consisting of a glass disk having concentrically arranged wavy portions forming concentric convex lens faces on one side thereof and concentric concave portions on the opposite side, flat annular faces between the said concave portions, and light, iffusing means provided upon' said annular aces.

3. A lens consisting of a glass disk having on one side `concentricallyarranged wavy portions forming concentric convex lens faces, and on the other side having alternating concentric concave. portions and concentric flat lens faces. c

4. A lens consisting of a disk of transparent` material having on one face annular concentric""convex lens fac-es and on the other face having annular concentric concave portions and fiat lens faces.

5. A lens consisting of a diskof transparen/tmaterial having on one face abutting annular concentric convex lens faces and on the other side having spaced annular concentric concave portions, the spaces between the concave portions provided with light di'using means. i.

vII/iiestimony whereof I aiix my signature.

JOHN BENNETT.

i Witnesses:

H. O. ROWAN, E. C. Gunnar.v