US2078986A - Light ray projector - Google Patents

Description

y 1937. B. s. YOUNG 2,078,986

LIGHT RAY PROJECTOR Filed Sept. .5, 1954 INVENTOR, grid/"Z Jajrcfiwrzy;

- A TTORNE i Patented May 4, 1937 Q LHGHT RAY 'PRQJEQTUR Briant Sayre Young, Los Angeles, @alif. Application September 5, 19%, Serial at. M2340- 3 Claims.

This invention relates to lighting devices, and specifically to headlights, spotlights, searchllghts, and the like.

A further object is the provision of a headlight or spotlight which may be utilized on a vehicle of any type, such as an automobile, and which will not interfere with or cause glare in the eyes of a driver of an approaching vehicle.

A further object is the provision of a device of the character stated which may be utilized for the lighting of highways, as a beacon, for the illumination of a light marker for air routes particularly where the rays must be directed vertically, and for various other like purposes.

5 The present invention is so constructed and has its parts so arranged that light therefrom is visible for a long distance forwardly of the vehicle and which light appears to an observer facing said light to be in colors, while to the eyes of an observer rearward of said light, it

appears white.-

The invention has for .a further object the provision of a device of the character stated, which is simple and of rugged construction, ca-

pable of long use without attention, and inexpensive.

A With the above and other objects in view, the invention consists in the novel and useful provision, formation, construction, association, and

relative arrangement of parts, members, and features, all as shown in a certain embodiment in the accompanying drawing, described generally, and more particularly pointed out in the claims.

In the drawing:

The figure is a fragmentary view, partly in v longitudinal section, of a device which may be utilized in practicing-my invention. Referring to the drawing, I have for illustrative purposes, shown one embodiment of my invention, although it is to be understood that the general size, shape, contour and arrangement of parts, members and features may be varied to suit conditions and individual requirement.

The headlight depicted in the drawing is designated as an entirety by the numeral l, and wherein 2 and 3 are front and rear shells, respectively, and t a reflector enclosed within the shell 3. The precise curvature of the reflector will depend upon use and service, and may be parabolic, a portion of a hollow sphere, or of other form. The front shell 2 is inthe form of a frustum of a hollow cone. This construction provides a central opening at 5 with the axis of the two casings.

(on. sic-41.3)

usual side wall diverging from the central opening to the base 6. Thus, it may be said that the side wall and particularly the inner surface thereof is at an angle to the longitudinal axis of said shell 2. The two shells and the reflector may be secured together in any approved manner, such as illustrated, for instance, at l. The reflector is secured to the shell 3 by means i, and the usual hinged annular retainer ring 9 secures the shells 2 and 3 in cooperative relationship, 10 when the ring 9 is locked by means it to the shell 3.

A lens M is adapted to be positioned in the opening 5 of the casing 2, and to this end, the casing adjacent the opening may be swaged in- 15 Wardly, as shown at it, to force the lens against an annular flange 113 within the said casing. In this manner, the lens is held quite rigidly and against movement and in such position that the optical axis of the lens lies in the longitudinal 20 The interior surface of the shell 2 and the reflector d is provided with color segments, herein designated as it, it, to, H, IB, Ill, and 20, although I may vary the number of segments. different colors; for instance, the segment it may be, orange, l5 violet, l6 blue, i'l green, Iii yellow, is orange, and 2!) red. These colors may have highly glazed or reflecting surfaces or, in certain instances, the surface may be dull. 30

An incandescent bulb 2| placed at the focal point completes the device, this bulb being secured in the usual mounting 22. The casing '3 likewise has secured thereto a mounting bracket The operation, uses and advantages of the invention just described are as follows:

When the incandescent light 2! is properly focused and assuming that a parabolic reflector is utilized, the rays of light are generally directed in straight paths from the curved reflector surface. These rays of light impinge upon the color segments in both the reflector and easing 2.

When the incandescent bulb is in focus, certain of the rays will strike the red and all colors will be absorbed from thelighted bulb save the red. For the next'band 19, which is orange, all colors but orange, which is a combination of red and yellow, will be absorbed, and so on. However, 50 as the focus is such that certain rays that already contain orange impinge against the green and the blue, whatever blue or green is contained within the orange will be reflected, and all other colors absorbed. It is, therefore, advisable in 55 These segments may be of 5 I white light. The colors, if the colors are highly glazed, reflect colors back and forth within the '5 shell 3 and the reflector.

Viewing the headlight from the front and looking toward the lens H, colored light appears within the said headlight but does not seem to emerge therefrom, with the result that eye strain 10 and-glare are overcome. As a matter of fact, a beam of light is passing through the lens H and illuminating surrounding objects, depending upon the angle of the lens. To the person rear- 15 ward of the headlight, the surrounding territory is brightly illuminated although the beam of light appears concentrated and is white.

While, as stated, a parabolic reflector may be utilized, still the reflector may be formed so as 20 to concentrate the rays of light centrally of the lens II. In actual practice, it has been found best not to allow the rays of light to spread too greatly after passing through the lens, and the arrangement of the parts. members and features as depicted bythe drawlng are satisfactory in I actual use.

I claim: I

1. As a new article of manufacture, a headlight or the like including a reflector, and a conical casing forward of said reflector, the inner wall surface of said reflector and said conical casing provided with contiguous annular bands of diflerent spectral color values. 2. As a new article of manufacture, a headlight or the like, including a reflector, a casing forwardly thereof, both the interior of said reflector and said casing being provided with contiguous spectral color bands.

3. As a new article of manufacture, a headlight including a reflector and a conical casing forward of said reflector; both the inner wall surface of said reflector and said conical casing provided with contiguous color bands of different spectral color value, and a lens carried by the conical casing.

BRIANT SAYRE YOUNG.

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