Abstract: The invention is a low voltage ceiling or wall mounted light fixture for residential and commercial lighting, having included a plurality of high lumen white LED lights incorporated within the fixtures, a light color diffusion panel and a household current to low voltage DC converter within the fixture to convert the AC current to low voltage DC current, saving on the cost of power required to provide illumination for the resident or commercial application and virtually eliminating the need to replace incandescent or fluorescent bulbs, the LED lights having an average duration of over 150,000 hours.

Abstract: For good health, exposure to a variety of wavelengths is needed. A balance in the exposure from day to day and throughout the year is necessary. Avoidance of overexposure by having moderation in the exposure is essential to prevent skin cancer and other disorders. The present invention can enhance the probability for good health and reduce the risk of diseases associated with solar radiation exposure and diet for those person with deficient, excess or non-balanced exposure and diet. A key feature of the invention is the use of whole body exposure when possible. This enables the use of very low irradiances for short periods. This results in an overall reduction in the risk of skin cancer. Several techniques are included to increase the UV-B exposure.

Abstract: A solar simulator is provided having a radiation source for generating radiation with a spectral (energy) distribution that largely corresponds to the spectral distribution of sunlight. At least one filter is arranged in the region of the radiation source. This filter suppresses long wave or short wave radiation components of the radiation source. The filter is movable, basically perpendicular, to the irradiation direction of the radiation source. An irradiation plane capable of accommodating objects to be irradiated is set at a distance from the radiation source and the at least one filter such that the radiation coming directly from the radiation source, as well as the at least one filter, impinge on the irradiation plane as basically homogenous radiation of a punctiform light source.

Abstract: A method to improve the probability for good health and decrease the risk of cancer and disease comprising: controlling the indoor spectral radiation environment partial body exposure in an amount above 0.06 MED, but not exceeding 0.2 MED per day by irradiating the body with an artificial light source.

Abstract: A filter in the form of a lens or panel or a sleeve for a fluorescent light source made with pigments therein that will modify the fluorescent output to resemble daylight. An ultraviolet absorber is also included in the panel.

Abstract: A polychrome lighting device, including at least one light source for each one of the three primary colors and elements for adjusting the light sources, the adjustment elements being adapted to independently control the adjustment of the luminous intensity of the light sources in order to combine the light beams emitted by the sources into a light beam having the desired shade of color, remote control elements being also provided for setting, storing, and retrieving desired luminous intensity values of the light sources and therefore desired light colors.

Abstract: An illumination apparatus for illuminating paintings at least a part of which is painted by a particular paint that emits or reflects light upon reception of ultraviolet ray, has a first illumination lamp constituted of an ultraviolet lamp and a second illumination lamp constituted of incandescent lamps. The ultraviolet lamp and incandescent lamps are controlled by a control circuit to be repetitively turned on and off as time elapses in accordance with a control sequence selected by an observer. While the incandescent lamps are turned on, the ultraviolet lamp is turned off to make the painting viewed as, e.g., a daytime landscape without showing, e.g., a nighttime landscape, and while the incandescent lamps are turned on, the ultraviolet lamp is turned on to make the same painting viewed as the nighttime landscape.

Abstract: Apparatus for obtaining a desired tint comprising light colouring means in the form of a cylinder having a number of different regions of respective different colours forming a ring around the axis of the cylinder, and region which is neutral as regards colour, which forms a ring around the axis of the cylinder, and which is adjacent to all the coloured regions. A light source directs light towards the cylinder, an aperture defining a selected region of the cylinder which affects the light which creates the desired tint. First movement control means are operable to effect rotation of the cylinder about its axis to effect a change in the hue of the tint without changing the saturation thereof, and said second movement control means are operable to effect axial movement of the cylinder to effect a change in the saturation in the tint without changing the hue thereof.

Abstract: A panel unit for use in a window, a partition, a free standing frame, or in a wall, and having a plurality of vertically stacked, elongated transparent elements arranged in a frame, whereby natural light or artificial light on one side of the panel reflects onto the environment on the one side of the panel unit. The reflected light is transmitted through each transparent element and is refracted and dispersed to create a block of color when viewed on the other side of the panel, which results in a color pattern when viewed on the other side of the panel unit. The transparent elements may be made of lead crystal glass or optical glass, and may be triangularly shaped to produce a maximum light dispersion zone or trapezoidally shaped to produce a minimum light dispersion zone. To resist or reduce glare, a shutter apparatus may be mounted adjacent to the panel unit on the side of the panel unit where the direct sunlight exists, or filters or tinted glass may be used.

Abstract: A method and apparatus for improving the accuracy of the simulation of sunlight reaching the earth's surface includes a relatively small heated chamber having an optical inlet and an optical outlet, the chamber having a cavity that can be filled with a heated stream of CO.sub.2 and water vapor. A simulated beam comprising infrared and near infrared light can be directed through the chamber cavity containing the CO.sub.2 and water vapor, whereby the spectral characteristics of the beam are altered so that the output beam from the chamber contains wavelength bands that accurately replicate atmospheric absorption of solar energy due to atmospheric CO.sub.2 and moisture.

Abstract: A lamp for producing a spectral distribution which is substantially identical to daylight color temperature. The lamp contains a filament which, when excited by electrical energy, emits radiant energy at least within the visible spectrum with wavelengths from about 400 to about 700 nanometers, a reflector body with a surface to intercept and reflect the visible spectrum radiant energy which is positioned within the reflector so that at least 50 percent of the visible spectrum radiant energy is directed towards the reflector surface, and a coating on the surface of the reflector body from which the reflected radiance of each wavelength of visible spectrum radiant energy directed towards the reflector surface when combined with the visible spectrum radiant energy not directed towards the reflector surface produces a total light output in substantial accordance with a specified formula.

Abstract: An automated lighting instrument according to the present invention includes multiple motorized parameters and operates at a low noise level with improved thermal management devices such as a reflector coated with a cold mirror film, a metallic heat sink, a housing with ventilating holes, and thermally isolating motor mounts. The improved thermal management devices provide the basis for an improved method for managing the thermal characteristics of the automated lighting instrument of the present invention.

Abstract: An improvement in a multi-layer polarized light control panel comprising an ultraviolet transmitting acrylic supporting structure. Prior art multi-layer polarized light control panels are made with an ultraviolet absorbing acrylic supporting sheet, which blocks most ultraviolet light below 380 nanometers. Thus, the ultraviolet light which is emitted by fluorescent lamps, and in particular by specially formulated fluorescent lamps to provide so called "full-spectrum" light, is blocked by the prior art polarized light control panels. Use of an ultraviolet transmitting acrylic supporting sheet would permit the transmission of the ultraviolet light emitted from the lamp through the acrylic supporting sheet, which would then be polarized by the multi-layer polarized light control panel. The light diffusing polarized control panel can also be manufactured with an ultraviolet transmitting acrylic, providing a multi-layer polarizer of unsurpassed visual comfort probability.

Abstract: An apparatus for generating a spectral distribution. This apparatus contains a light source and a single filter. The single filter is comprised of a color correcting filter material and a neutral density filter material. When the apparatus is adjusted, the spectral distribution of the light which passes through it varies continuously, but the brightness and/or irradiance of such light is substantially constant.

Abstract: An apparatus for generating a spectral distribution. This apparatus contains a light source and a single filter. The single filter is comprised of a color correcting filter material and a neutral density filter material. When the apparatus is adjusted, the spectral distribution of the light which passes through it varies continuously, but the brightness and/or irradiance of such light is substantially constant.

Abstract: A xenon arc lamp and a tungsten filament lamp provide light beams that together contain all the wavelengths required to accurately simulate a solar spectrum. Suitable filter apparatus selectively direct visible and ultraviolet light from the xenon arc lamp into two legs of a trifurcated randomized fiber optic cable. Infrared light selectively filtered from the tungsten filament lamp is directed into the third leg of the fiber optic cable. The individual optic fibers from the three legs are brought together in a random fashion into a single output leg. The output beam emanating from the output leg of the trifurcated randomized fiber optic cable is extremely uniform and contains wavelengths from each of the individual filtered light beams. This uniform output beam passes through suitable collimation apparatus before striking the surface of the solar cell being tested.

Abstract: Provided is an illumination device in which natural light having a correlated color temperature equivalent to that of artificial light can be obtained so that there is no feeling of physical disorder against the artificial light when the natural light is used in combination with the artificial light for energy saving.

Abstract: An apparatus for providing a light distribution which can simulate any desired lighting condition such as, for example, daylight, blackbody radiation, and the like. The apparatus contains a lighting source which provides polychromatic light. The polychromatic light is then dispersed into its constituent frequencies, the dispersed light is then selectively attenuated, and the selectively attenuated light is then converted into light composed of randomized spectral frequencies.

Abstract: Room light, especially fluorescent lighting is corrected to provide a green-magenta balance comparable to that of natural sunlight by measuring the green-magenta balance of the lighting within the room and applying a filter to each light source to bring the balance to the desired level. This ameliorates the detrimental physiological effects of an unnatural light spectrum in a workspace.

Abstract: A sunlight simulator includes an elongated, cylindrical housing, an artifical light source disposed along the longitudinal axis thereof, and a plurality of light collecting subassemblies equidistantly spaced radially from and around the light source. The light source is of a type that emits a substantial amount of radiation in the UV portion of the spectrum. The light collecting subassemblies provide a plurality of individually and selectively adjustable beams of UV radiation. A plurality of light guides are provided for directing the radiation to desired locations.

Abstract: A lamp is provided having a light source and a suppression mechanism, for example an absorbing mirror reflector and/or an absorbing or reflecting filter, for partially suppressing color components of the light coming from the light source for the purpose of enhancing surface colors of an object to be illuminated, said surface colors being different from the suppressed color components.

Abstract: A viewing angle color sensitive lighting accessory comprising a sheet member capable of transmitting light, emitting from a visible light source, forwardly towards an area from which light is to be perceived, at least one optical interference multilayer coating on the sheet member and a reflector secured to the sheet member and extending around the light source. The coating has a transmittance which is a function of wavelength and angle of incidence, and in most instances, of state of polarization of the visible light thereto so that the light perceived from the light source has a particular coloration and, if desired, polarization at a particular viewing angle to the coating. The light source may be, for example, an incandescent light source or a light guide, or any other luminaire. The means securing the sheet member to the reflector preferably removably secures the sheet member thereto.

Abstract: A medical examining lamp has a generally parabolic reflector, a socket for receiving an incandescent lamp and a removable shield mounted adjacent the open end of the reflector and in alignment with the socket. The reflector has a blue anodized surface to color correct the incandescent lamp.

Abstract: An active lighting system including one or more light stands each supporting a plurality of individually adjustable colored light sources, and a keyboard unit having a plurality of switches and light intensity controlling elements which are touch operated so as to enable the intensity of the various lights in the system to be selectively varied to create a rhythm-to-color display.

Abstract: A solar simulator includes a lamp array of solar lamps pivotally connected to an array frame. The array frame is rotatably and pivotally mounted on a gantry crane, the elevation and lateral position of which are adjustable relative to the position of a solar collector to be tested. The solar simulator maintains the plane of the lamp array parallel to the plane of the test device for all elevations, lateral positions and rotational positions of the lamp array, and controls tilting of the lamps relative to the array frame to any desired angle of incidence. The solar simulator is operated to control the angle of incidence of radiation received by the solar collector to be tested and to vary the distance from the array of lamps to the solar collector in such a manner that the intensity of received radiation along the surface of the test device is uniform, thereby avoiding undesirable lateral gradients in temperature along the surface of the test device.

Abstract: An incandescent lamp utilizing a transparent heat mirror coating on the lamp envelope for transmitting radiation in a selected portion of the visible range to produce a desired color and reflecting infrared thermal radiation back to the filament for increasing its temperature and thereby increasing its efficiency. The coating is preferably of the etalon type having a layer of an insulating material sandwiched between two layers of metal.

Abstract: A removable fog light filter for automobile headlights or the like includes a retaining member adapted to be affixed to the rear of the headlight and having radially and forwardly extending arms provided with apertures at their distal ends adapted to removably receive protrusions provided proximate the circumference of a transluscent light filter for retaining the filter against the headlight front lens portion.This application is a Continuation of prior U.S. Application Ser. No. 818,740, filed on July 25, 1977, now abandoned.

Abstract: Lighting fixture having housing with an open side. A lamp is mounted in the housing and is capable of producing light rays which pass through the open side of the housing. A glass protective covering is carried by the housing and encloses the open side. At least one surface of the glass is provided with anti-reflection film formed by a chemical etch/leach process on the one surface. The anti-reflection film increases the transmission of the high angle light rays from the lamp.

Abstract: A major surgical light has a plurality of light sources which permit both color and size adjustment of the illumination pattern. Color variation is accomplished by increasing the intensity of a light source of one color value while decreasing the intensity of a light source of another color value. Size adjustment is accomplished by providing two light sources, each casting different diameter light patterns which are superimposed on the work area. The intensity of one light source is increased while the other is decreased so as to vary the size of the pattern.

Abstract: Method and device for efficiently generating white light with good color rendition of illuminated objects. This is achieved by blending three different colors of light, namely, a green to yellow-green color of light, an orange to red color of light, and a purplish-blue to greenish-blue color of light. The relative intensities of the blended colors of light are selected to produce white light of predetermined ICI coordinates. The resulting blended light has at most only a limited amount of radiations of a wavelength shorter than 430 nm and at most only a limited amount of radiations of a wavelength longer than 630 nm. Also, the blended light has at most only a limited amount of radiations of a wavelength of about 575 nm and at most only a limited amount of radiations of a wavelength of about 500 nm.

Abstract: To permit employment of an incandescent lamp of about 3000.degree. K color temperature as a light source, the reflector reflecting light to the use area, typically an operating table, a dental chair, or the like, is constructed of a material such as glass having an index of refraction of 1.425 to 1.575, the glass readily permitting passage of infrared radiation. To provide reflected light which corresponds at least approximately to daylight, with a color temperature of 6000.degree. K., the glass is coated with a sequence of materials as set forth in table I, the materials being applied to the glass in the sequence given with increasing distance from the glass carrier, resulting in an overall reflected light of about 5500.degree. K.