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Publication numberUS1319186 A
Publication typeGrant
Publication dateOct 21, 1919
Filing dateJun 28, 1918
Publication numberUS 1319186 A, US 1319186A, US-A-1319186, US1319186 A, US1319186A
InventorsWilliam H. Spencer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1319186 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



APPLlCATlON FILED JUNE 28. 1918. 1,319,186. Patented Oct. 21,1919.

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1,319,186, v Patented Oct. 21,1919.






Specification of Letters Patent. Patented Oct. 21, 1919.

Application filed June 28, 1918. Serial No. 242,364.

To all whom it may concern Be it known that I, WlLLIAM H. SPENCER, a citizen of the United States, residing in the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Lamps, of which the following is a specification.

This invention relates to lamps in which the natural light from a light-emitting source is changed or corrected in such a manner as to modify the colors or appearance of any material or object with respect to its color or appearance under the direct light of the light source. The primary object of my invention is to provide improved means for producing these results by selective absorption and selective reflection. In its practical application the present invention contemplates a reflector in which translucent portions operate by selective absorption and reflection to modify the character of the light which is thrown upon the illuminated area. Certain specific objects of invention will appear in the specification and be pointed out in the appended claims, reference being had to the accompanying drawings, in which,

Figure 1 is a side elevation of one embodiment of my invention, parts being shown in section;

Fig. 2 is a bottom plan view on an enlarged scale of the reflector removed;

Fig. 3 is a diagrammatic side elevation of another embodiment of my invention, parts being shown in section;

Fig. 4 is a side elevation of another embodiment, parts being shown in section.

In the embodiment of my invention shown in Fig. 1, the metal base carries a standard 2 which is surmounted by an incandescent lamp 3. Surrounding the lamp 3 is a reflector 4 which is supported by the radial arms 5 from the standard 2. The reflector is constructed of a translucent body 6, preferably of glass, provided with a reflecting backing 7, so that a light ray from a light-emitting source 8 within the lamp 7, when reflected by the reflector down onto the area to be illuminated, is caused to pass twice through the thickness of the glass 6. In order to apply the principle of selective absorption to a reflector of this type, I color the glass 6 preferably by including in its ingredients, some substance which will produce the desired col0r light source which may be of any desired color consistent with the use to which the lamp is to be put. The arrangement shown 1n Fig. 1 is such that the reflected rays from one side are projected across the reflected rays from the other side in such a manner as to produce illuminated areas of different character on opposite sides of the lamp. A screen or light shield 9 is preferably arranged below the light globe 3, the arrange ment being such that any light ray from the source 8 which goes above the upper edge of the screen or shield 9 will strike the reflector 4 and be projected in the manner above pointed out. All other rays, 2'. e., the direct light rays, will be cut off according to this embodiment. As shown in Fig. 1, any light ray will be twice subjected to the selective absorption as it passes to and from the reflecting back 7. In the embodiment shown in Fig. 3, a lamp socket 10 is suspended from above, being provided with a lamp 11 and a reflector 12, and where desired is also provided with a light screen or shield 13. According to this embodiment of my invention, the light rays are mixed by being projected on one and the same area of illumination from different sides of the light source 14. According to this embodiment, a reflector may be divided into any desired number of portions or glazed sections provided with glass of different colors which serves to mix on a given area of illumination, lights of any desired colors. In the embodiment shown in Fig. 4, a lamp socket 15 carrying a light bulb 16 which is provided with a shield or screen 17, is suitably arranged with respect to a reflector 18. The reflector 18 is according to this embodiment preferably glazed with glasses of two colors which provide two separate fields of illumination of different colors.

The advantages of this construction will now be understood. Thus by a simple and effective arrangement of reflecting portions of different color in a reflector, light of different color values may be delivered in the illuminating field. For example, if one half of the reflector contains a blue glass mirror while the other half of the reflector contains a clear glass mirror, the natural light of the lamp would be cast by one side of the lamp, while on the other side, an altered or corrected light would be cast. Obviously the lamp may be conveniently used with or Without the screen or shield. This construction is also well adapted to be used on a standard to be suspended on a hanger or to be used inverted to throw the light to the ceiling Furthermore, by properly proportioning of the mirrors to project the three primary colors on one and the same illuminated area, the resultant illustration would be quite, or a near approach to daylight.

I claim 1. In a lamp, a light-emitting element, a reflector therefor, and a shield cooperatively disposed with respect tosaid reflectorto cut off the direct raysfrom said light-emitting element, said reflector comprising a reflective backing and a colored main body pora reflector therefor, having translucent p'ortions through which the light rays from said light-emitting element pass in their ath toward and away from the reflective acking of said reflector, said translucent portions on different sides of said lightemitting element having different reflecting effects on the light rays from said lightemitting element.

3. In a device of the character described, a light-emitting body, a reflector thereforincluding glass portions of different colors provided with suitable reflecting backings, said reflector portions being arranged around said light-emitting body, and a screen or light shield which is cooperatively disposed with respect to said reflector and light emitting body to cut off all direct rays which otherwise would pass said reflector.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2595732 *Aug 12, 1947May 6, 1952Melvin C ThorstensenOrnamental lamp shade providing a display of blending colors
US2725464 *Jun 8, 1953Nov 29, 1955Jule VigonLamp construction
US2831966 *Apr 19, 1954Apr 22, 1958Analite CorpLighting fixtures
US3112886 *Feb 1, 1960Dec 3, 1963Kushner Leonard HColor control
US4293899 *Dec 21, 1978Oct 6, 1981Sanner George ELuminaire
US5287259 *Dec 19, 1991Feb 15, 1994Lorin Industries, Inc.Light reflector assembly
US8282248 *Dec 3, 2008Oct 9, 2012Koninklijke Philips Electronics N.V.Luminaire including upper and lower dome-shaped optical elements
U.S. Classification362/293, 362/343, 362/307, 362/414
Cooperative ClassificationF21V9/10