A luminous display device for projecting various colored light rays in a moving effect, the device consisting of an electric light socket fitted with a standard flood light or spot light lamp bulb and which is enclosed within an outer shade, the shade being open at its front end within which there is a front frame support secured by means of spring clips, the front frame support having a series of openings therethrough so to permit light rays from the bulb to pass therethrough, and the front fra...

A light projector which projects a beam of light inclined to the projector axis, comprising a hemispherical base containing an angularly adjustable lamp unit, and a glass with prismatic ridges which further deflects the inclined beam from the lamp unit.

A lighting device serving both ornamental and functional purposes having a base, a vertically arranged light passing member extending upwardly from the base, a light and color wheel in the base arranged to direct light of various colors into the light passing member and having forms wherein water vapor, reflective material or incense may be directed into the light passing member to carry the light beam and an additional form wherein the light passing member is filled with fluid and air is bubble...

A photographic light has a light source and a reflector. The reflector has a pair of surfaces, the innermost of which is elliptical in cross-section and is coated with a material which is transparent to infrared radiation but reflective of visible radiation. The outermost surface is roughened and coated with a material which is reflective of both visible and infrared radiation. In another embodiment, the outermost surface of the reflector is elliptical in cross-section but has a different focal ...

A compact light source having a short, straight elongated tubular iodine incandescent lamp. The ends of the lamps are close to the reflector to prevent condensation of the iodine. The reflector is in the shape of a surface of revolution formed by two half-parabolas tilted slightly toward each other, but having the same focus. The light source can be tilted if desired, and can be used as a "movie light" for making motion pictures.

A light sensor is disclosed having an objective lens system capable of producing a backwardly curving image plane of a starfield which matches the similarly curved surface of the photocathode of an image dissector tube. The objective lens system comprises an airspaced triplet coupled to a clear glass faceplate on the image dissector tube. The triplet comprises an entrance lens having a convex-convex configuration, a second lens having a convex-plano configuration, and a third lens having a conca...

A device for indicating visually relative changes in physical phenomena including an element for transmitting light, a pair of opposed contractingly colored light sources, means for varying the relative intensity and/or condition of the light sources thereby transmitting through the element a color indicative of the change.

The application of a voltage between the semiconductor and the conducting layers of a structure wherein said layers are separated by an insulator layer allow the modulation of a luminous radiation propagating through or reflected on said structure.

A compact, short arc, high-pressure, xenon-filled light source provides high-intensity radiation with reliability and tolerance of severe environments. Specially shaped thoriated tungsten electrodes are fixed in opposed relation to nickel support blocks welded within a composite, uniform diameter, cylindrical envelope portion formed of a tube of alumina ceramic sealed to nickel-iron-cobalt alloy sleeves.

A light fixture comprising a housing adapted to be mounted in an upright position and having upper and lower lamp compartments. There is a window in each of a first pair of opposite sidewalls of each lamp compartment, with the windows in one compartment being vertically intermediate the windows in the other compartment. An electrical socket is mounted on a sidewall of each compartment intermediate the windows therein to receive the electrical end of the lamp for extension generally horizontally ...