Abstract:
There is herein described a lamp having a light-transmissive envelope, a tungsten-halogen capsule and a coating disposed on the surface of the light-transmissive envelope or doped in the light-transmissive material. The light-transmissive envelope may comprise a light-transmissive material. The tungsten-halogen capsule can be positioned inside the light-transmissive envelope.
Abstract:
There is provided a phosphor blend for an LED light source comprising from about 25 to about 35 weight percent of a cerium-activated yttrium aluminum garnet phosphor, from about 5 to about 10 weight percent of a europium-activated strontium calcium silicon nitride phosphor, and from about 50 to about 75 weight percent of a europium-activated calcium magnesium chlorosilicate phosphor. An LED light source in accordance with this invention has a B:G:R ratio for a 5500 K daylight balanced color film of X:Y:Z when directly exposed through a nominal photographic lens, wherein X, Y and Z each have a value from 0.90 to 1.10.
Abstract:
A method of making a lighting lens having a multiplicity of lenticules is disclosed, and in particular a method using spherical and aspherical lenticules is disclosed. The lenticules are of two or more standard types, each of which produce a characteristic beam pattern. By selecting two standard lenticule types, and determining a weighted ratio, a lens for a desired lighting pattern may be made without having to specifically design the individual lenticules, or the particular lenticule arrangement. In particular, separate sample lens, each with a sample of a particular lenticule type, may be formed to produce characteristic sample beam patterns. By forming a first sample lens with gaps between the lenticules, and forming a second sample lens with lenticules and gaps complementarily positioned with respect to the first sample lens, the first and second patterns may be intermeshed in a finale design, having the combined beam patterns. A weighted averaging process may also may be followed.
Abstract:
A lens member for use in a motor vehicle and adapted for being mounted in a recess within a front, contoured surface of the motor vehicle. The system especially designed for using the invention includes a plurality of separate lighting modules, each in turn including a light source and reflector means. The lens member comprises a hollow, enclosed, single piece lens element having a front, clear surface positioned to coincide with the vehicle's front, contoured surface so as to enhance aerodynamic performance of the lighting system (as well as the vehicle), a rear lensing portion positioned substantially at a predetermined angle (i.e., 0 to 30 degrees) relative to the front, planar surface of the modules located adjacent thereto, and side and bottom walls for enclosing the lens member to provide a sealed, dirt-free component.
Abstract:
A disk-shaped flashlamp unit for use within an indexing means or mechanism associated with a camera. The unit includes several, e.g. ten, electrically-activated flashlamps radially disposed within the unit's plastic, light-transmitting housing. A pair of planar reflectors are utilized for each lamp to reflect the light therefrom through the housing. Light output can be further enhanced by utilization of two additional planar reflective members adjacent each lamp, the four members surrounding the side and bottom portions of the flashlamp's envelope to thereby direct light emitted from the flashlamp in a substantially singular direction through the peripheral region of the plastic housing. The invention's reflectors also assure prevention of sympathetic ignition.
Abstract:
An open-ended reflector for being positioned within a camera to provide a controlled pattern of light on a rectangular subject field located at a distance, e.g., five feet, from the camera. The reflector includes three specular reflective surfaces and a fourth surface having a ribbed diffusing region thereon. These four surfaces are oriented in such a manner that the mechanical axis through the reflector's open end will be offset from the reflector's optical axis when viewed from in front of the reflector.
Abstract:
A high voltage movie light including a plastic holder, a pair of spaced-apart incandescent lamp units positioned within the holder, and means for electrically connecting the lamp units to an external power source. Each lamp unit comprises a formed glass reflector and a tungsten-halogen lamp located within the reflector and having a planar, dual filament structure therein. The lamp units are positioned within the holder such that the planes occupied by the respective dual filament structures intersect at a predetermined angle, e.g. 90 to 110 degrees, in order that the light output from each unit will be centered on a respective diagonal of the rectangular subject field being illuminated by the movie light. Each unit produces a bimodal intensity distribution, thus further assuring increased illumination levels on the subject field. An incandescent lamp unit suitable for use in the movie light is also disclosed.
Abstract:
A phototherapy irradiation chamber having substantial uniformity of irradiance therewithin comprises an array of vertical fluorescent lamps surrounding the irradiation space. Reflectors are located within the array at the top and bottom thereof. The ends of the lamps extend beyond the reflectors.