Abstract: A surface light source device, comprising a light source (2); a light conductor (1) which has a light incident face (11) on at least one side end surface thereof which confronts the light source (2), and a light emitting face (12) on one surface thereof which is substantially perpendicular to the light incident face (11); and a light angle varying sheet (3) which is disposed at a side of the light emitting face (12) of the light conductor (1), wherein at least one of the light emitting face (12) and a back surface (13) of the light conductor (1) comprises a minute structure having an average slant angle of 0.5 to 7.5 degrees. The light angle varying sheet (3) may comprise a prism sheet having a plurality of prisms (31) which are formed parallel to one another on at least one surface thereof.

Abstract: A method and system for condensing and collecting electromagnetic radiation onto a target surface comprised generally of a radiation source, a primary reflector and a retro-reflector having a shape complementary to the shape of the primary reflector is disclosed. The primary reflector has a reflecting surface for reflecting the radiation from the source which is substantially concave in shape. The radiation source emits substantially uniform radiation flux in substantially all directions which is collected by the primary reflector and redirected toward the target surface. The retro-reflector, having a complementary shape which depends upon the shape of the primary reflector, is positioned so as to intercept a portion of the radiation redirected toward the target surface. The retro-reflector reflects the intercepted portion of the radiation back toward said primary reflector along the same path such that the redirected radiation is channeled back through the source.

Abstract: An efficient arrangement for coupling light between a light source and at least one light guide comprises a light source having a bulbous region and electrical in-leads extending into the bulbous region. A generally tubular, hollow coupling device with an interior light-reflective surface receives light from the source at an inlet and transmits it to an outlet. The coupling device increases in cross sectional area from inlet to outlet in such manner as to reduce the angle of light reflected from the surface as it passes through the device. A thermal-isolating region has an inlet positioned in proximity to an outlet of the coupling device and has an outlet for passing light to an optical member. The thermal-isolating region comprises one or more members. The foregoing can achieve high efficiency and considerable compactness while using a non-“point-like” light source.

Abstract: An optical integrating cavity supplies light or other radiant energy through a port to a deflector. The deflector coupled to the port may form a “fan” extending along one side or around all or part of the circumference of the cavity. Preferred embodiments use principles of constructive occlusion (diffuse reflectivity in a mask and cavity structure) together with the port and deflector structure. The cavity and mask serve as the optical integrating cavity. The constructive occlusion provides a tailored intensity distribution for radiant energy illuminating a first region; whereas the integrating cavity, port and deflector distribute another portion of the electromagnetic energy over a second field of intended illumination. The first and second areas illuminated may overlap slightly, or one may include the other, but preferably most of the two areas are separate. In some cases, the system configuration creates a dead zone between the two regions.

Abstract: A backlight for a liquid crystal display includes a light guide plate located adjacent to a liquid crystal display panel. A light collector is located at one end of the light guide plate and has an exposed surface for receiving ambient light. The light collector has a reflector secured inside it. The received ambient light is reflected by the reflector along the light guide plate. The reflector may include three arcuate shaped reflecting elements. The light guide plate has a reflective surface which reflects the light toward the liquid crystal display panel.

Abstract: A surface light source device, comprising a light source (2); a light conductor (1) which has a light incident face (11) on at least one side end surface thereof which confronts the light source (2), and a light emitting face (12) on one surface thereof which is substantially perpendicular to the light incident face (11); and a light angle varying sheet (3) which is disposed at a side of the light emitting face (12) of the light conductor (1), wherein at least one of the light emitting face (12) and a back surface (13) of the light conductor (1) comprises a minute structure having an average slant angle of 0.5 to 7.5 degrees. The light angle varying sheet (3) may comprise a prism sheet having a plurality of prisms (31) which are formed parallel to one another on at least one surface thereof.

Abstract: A portion of a first paraboloid collects and concentrates randomized light from a lamp into parallel beams directed to a portion of a second paraboloid which refocuses the light onto a homogenizer. The second paraboloid has a shape that is substantially similar to the first paraboloid reflector. The source and the target are located at the respective foci of the paraboloids such that the optical flux from the source is imaged to the target with minimal distortion in an approximately no magnification imaging system. The system may be configured to control wavelength and intensity by inserting an additional filter. In addition, a retro-reflector may be added to increase the overall flux density at homogenizer. The output is particular suitable for providing light to the light engine of projectors.

Abstract: A small and non-intrusive reflector is disclosed for use with a strobe light system for enhancing light distribution for wall mounted application, while maintaining a low current draw. The reflector comprises a “top reflective section” and a “bottom reflective section”, where each reflective section comprises three distinct reflective portions: a left reflective portion, a center reflective portion and a right reflective portion. Collectively, top section left portion and bottom section left portion provide illumination to a negative horizontal range of viewing angles, whereas top section right portion and bottom section right portion provide illumination to a positive horizontal range of viewing angles. Finally, the top section center portion and bottom section center portion provide illumination to a range of horizontal and vertical viewing angles.

Abstract: A transparent lightguide (3) which guide light at least from one side end plane is characterized in that a large number of speckled, solid-line shaped or broken-line shaped protruding patterns whose cross-sectional width W (&mgr;m) at a cross section perpendicular to the axis of a linear light source is 10≦W≦200 are arranged on a light emitting surface at a low density in a region close to the linear light source and at a high density in a region far from the linear light source so as to make the luminance distribution of the light emitted from the light emitting surface approximately uniform. Here, the cross section of the protruding pattern is preferable to be approximately trapezoidal while having a straight part partially and the ratio H/W to be 0.2≦H/W≦1.0, where W and H denote cross-sectional width and height of the protruding pattern, respectively, or the cross section of the protruding pattern is preferable to be approximately circular-arc and the ratio H/W to be 0.2≦H/W≦0.

Abstract: A xenon ceramic lamp comprising a short-arc lamp with two integral reflectors disposed around the cathode arc ball to collect a wide range of elevation angles of light relative to the center longitudinal axis. The two integral reflectors and the cathode arc ball are within the same sealed volume of the lamp. A first reflector, generally below a common first focus, is a concave elliptical type for projecting light out through a sapphire window to a second focus. A second reflector, generally above the first focus, is a concave spherical type having its focus just offset from the first focus. Therefore, light rays may be emitted at nearly all angles from the cathode arc ball that will be reflected or back reflected by the elliptical and spherical reflectors.

Abstract: A headlamp 1 has a beam distribution switch mechanism that comprises a hood 3 and a reflecting mirror 4. The hood 3 includes a fixed member 31 having a cut portion 31a on the upper side and a moving member 32 for opening and closing the cut portion. The reflecting mirror 4 includes a first reflecting surface 41 for reflecting the light beam from the light source 2 when the cut portion 31a is closed and the second reflecting surface 42 for reflecting the light beam from the light source 2 when the cut portion 31a is opened.

Abstract: A reflector lamp (10) has a forward parabolic section (58) and a rear concave section (60), which may be parabolic, ellipsoidal, or spherical. A light source (24), such as the filament of a halogen lamp, is axially aligned with the axis of the reflector (LA) and is centered at the focal point of the forward and rear sections. The parabolic forward section is fluted to spread the light reflected therefrom smoothly in a beam of light, minimizing the center hot spot. The rear section, which is not fluted, directs the light reflected therefrom within the desired beam angle, resulting in little wasted light being emitted outside the desired beam angle.

Abstract: A light reflector imaging a high-intensity light beam includes a reflector part shaped as a portion of an ellipsoid, and a reflector part with two parallel edges, shaped as the zone of a sphere. The smaller parallel edge of the spherical reflector part serves as an aperture. The ellipsoidal reflector part has a rectangular opening offset slightly in one direction from its axis of revolution, and large enough to receive a socket. The ellipsoidal reflector part connects to the larger parallel edge of the spherical reflector part to enclose a lamp. A curvilinear reflector part can be attached to the aperture of the spherical reflector part to more narrowly focus the light exiting from the disclosed light reflector. The curvilinear reflector part is a paraboloidal-like shaped tube, which varies in curve and length according to a desired output angle. Other attachments to the two-part reflector assembly include a thin cylindrical tube into which a glass piece is mounted to cover the aperture.

Abstract: A filter IR spectral analyzer has a highly efficient compact imaging optical collector having a first concave reflector of ellipsoidal design or shape, having a light source at one of its foci and a second concave reflector of spherical design which has its focus at the center of the light source. The light emitted from the source that strikes the ellipsoidal primary mirror converges to a second focal point located in an exit aperture in the center of the second reflector. The light that does not strike the ellipsoidal primary mirror reflects off the secondary mirror and returns to the source for reabsorption and re-emission. Compactness is achieved for multi radius versions by the use of a segmental spherical secondary mirror with each facet being radiused with its origin at the source so that all act together as though they were one large spherical mirror. Four possible configurations are described.

Abstract: A surface light source device, comprising a light source (2); a light conductor (1) which has a light incident face (11) on at least one side end surface thereof which confronts the light source (2), and a light emitting face (12) on one surface thereof which is substantially perpendicular to the light incident face (11); and a light angle varying sheet (3) which is disposed at a side of the light emitting face (12) of the light conductor (1), wherein at least one of the light emitting face (12) and a back surface (13) of the light conductor (1) comprises a minute structure having an average slant angle of 0.5 to 7.5 degrees. The light angle varying sheet (3) may comprise a prism sheet having a plurality of prisms (31) which are formed parallel to one another on at least one surface thereof.

Abstract: An illumination apparatus includes a lamp, and a holding member for rotatably holding the lamp about its optical axis as a rotational axis. An projector includes the illumination apparatus, a first optical system for separating white light from the illumination apparatus into light of red, green and blue, a first panel for modulating the light of red per each pixel, a second panel for modulating the light of green per each pixel, a third panel for modulating the light of blue per each pixel, a projection lens, and a second optical system for superimposing the modulated light of red, green and blue on a display surface, such as a screen, in cooperation with the projection lens.

Abstract: There is provided a vehicle headlight having a light emitter for emitting light and a reflector for reflecting light in a generally convergent manner. The headlight also includes a lens for passage therethrough of light reflected from the reflector. The vehicle headlight further includes a peripheral light enhancing member disposed relative to the lens for receiving at least a portion of the light exiting the headlight without passing through the lens, the peripheral light enhancing member generally following the trace of at least a portion of the outer periphery of the lens and forming a pass through portion through which light may pass substantially without alteration thereof, and the peripheral light enhancing member having the characteristic to permit at least a portion of the light emitted by the light emitter to pass therethrough and having the characteristic to permit at least a portion of light falling on the headlight from outside of the headlight to pass therethrough.

Abstract: A method and apparatus for projecting a uniform projection of light by using a diffusive optic and non-imaging optic to receive light beams and uniformly distribute the light beams on a target. The uniform distribution of light diverges according to a pre-designed angle. The device allows for the use of multiple light sources which may be remotely located from the projection device. The projection device may be portable.

Abstract: A backlighted button or knob made by multi-shot molding has a translucent part and an opaque part. At the front of the button the translucent part contains a ridge shaped in the form of a symbol which is illuminated. The opaque part surrounds the ridge to mask light to surrounding areas. Where the symbol is a closed figure defining an island, a passage behind the ridge coupled the island to the surrounding areas to allow opaque material to flow to the island during molding, and results in an opaque bridge in the passage. To minimize a shadow of the bridge on the illuminated symbol the bridge is spaced far behind the ridge to allow light to be conducted through the translucent material to the ridge portion just in front of the bridge.

Abstract: An illuminating apparatus includes a light source (1) and a first reflector (2) arranged for reflecting light emitted by the light source. A three-dimensional attachment is mounted on the first reflector along a direction in which the first reflector reflects. The attachment has a sidewall (6) with a light-transmitting and scattering portion. A panel (7) of the attachment, positioned opposite the first reflector is, opaque. The illuminating apparatus further has a second reflector (3) with a hollowed-segmented sphere shape. The second reflector is positioned between the light source and the opaque panel of the attachment positioned opposite the first reflector. The second reflector (3) is smaller than the first reflector and has a reflecting concave surface facing the light source. The illuminating apparatus is compact, emits diffused light, and displays a bat-wing characteristic light distribution.

Abstract: An optical system operable to focus an annular beam of light onto a spot 16 comprises a paraboloidal reflector 10 with a lamp 12 at its focus, a coaxial annular convex lens 13 and a coaxial internally silvered conical mirror 15. A parallel beam of light formed by reflection by the reflector 10 of light from the lamp 12, if formed into a convergent annular beam by the lens 13 and reflected by the mirror 15 which is located between the lens 13 and its focus so that it converges to the spot 16.

Abstract: In order to suppress generation of the line bow phenomenon created when light from a light source is collected into a linear form on the surface of an original document by a toric mirror, for example, and in order to obtain uniform lighting, the optical axis of the light source is made to be in a common plane with a line normal to the surface of the toric mirror. Accordingly, the light travelling to the toric mirror, between the light source and the toric mirror, and the light reflected by the toric mirror, travelling between the toric mirror and the second mirror, is not inclined relative to the toric mirror normal line. The second mirror, the optical path conversion mirror, can be a half-mirror positioned between the light source and the toric mirror. Alternatively, a separate light source can be provided on opposite sides of the second mirror. As another alternative, the second mirror can be divided into two portions, with the light source being provided between the two portions.

Abstract: An assembly for frontlighting or backlighting a display or other such arrangement requiring frontlighting or backlighting is disclosed herein. The assembly uses a light pipe with a set of specially configured microprisms to rotate the divergent angle of light. The divergent angle rotator is used with a flat collimator assembly for efficient display illuminating with light of a controllable degree of collimation in both dimensions.

Abstract: A compact coupling arrangement between a light source and a plurality of light distribution harnesses includes a plurality of reflector members arranged around the light source with respective focal points of the reflector members positioned substantially coincident with the light source, so as to receive light from the source and reflect the light away from the source. Further included is a plurality of light coupling members, each having an inlet and an outlet surface for receiving light originating from the light source and transmitting light, respectively. A plurality of light distribution harnesses is provided for respectively receiving light from the light coupling members. The light coupling members each comprise a lens having a negative curvature in at least one direction generally transverse to a main light transmission axis therethrough, for receiving light at a first angular distribution and transmitting light at a reduced angular distribution.

Abstract: A desk lamp which includes a lamp stand, a supporting base revolvably supported on the lamp stand, two support arms symmetrically fastened to the supporting base at two opposite sides, two coupling members respectively connected to top ends of the support arms remote from the supporting base, two lamp shade holder frames respectively pivoted to the coupling members, a lamp holder holding a lamp bulb, two connecting rods bilaterally coupled between the lamp holder and the lamp shade holder frames, a reflector mounted on the connecting rods around the lamp holder, and a lamp shade supported on the lamp shade holder frames around the lamp holder, the lamp bulb and the reflector, the lamp shade having an inside wall coated with a layer of light reflecting substance.

Abstract: The present invention is directed toward a light concentration and collimation device including a tapered body concentrator and a curved, preferably parabolic, reflective collimator combined in a unit such that the apex of the tapered body extends into the reflective collimator through its apex. The concentrator is preferably hollow with a reflective inner surface to funnel light from the base to the apex where an aperture allows the concentrated light to enter the collimator proximate to its focus. The light is then reflected from the inner surface of the collimator to form a beam of collimated light. The concentration and collimation device is particularly useful in visual display apparatus and may be combined with a spectral peak light source and a spectral distributor to produce individual collimated beams of light at specific wavelengths.

Abstract: Apparatus is disclosed that efficiently projects electromagnetic radiation over a predetermined spherical sector with a tailored intensity distribution. The apparatus includes a base having a cavity and aperture that faces the spherical sector to be illuminated, with a flat, ring-shaped shoulder surrounding the aperture. The apparatus further includes a mask spaced over the aperture and a baffle projecting from the mask toward the aperture. The base, the mask, and the baffle are formed of a material having an outer surface with a significant diffuse, reflective characteristic. A source emits electromagnetic radiation (e.g., visible light) into the base cavity, and the base, mask and baffle are configured to redirect this radiation outwardly with the tailored intensity distribution (e.g., a uniform distribution) over the predetermined spherical sector (e.g., a hemisphere, or 2.PI. steradians).

Abstract: A light head assembly for directing light generated by a remote light source and transmitted through a light pipe. The light head assembly has at least one optic deflector with a convex reflective surface for intercepting and redirecting the light beam emitted from the end of the light pipe. The thus redirected light is incident upon a larger primary reflector having a concave reflective surface which subsequently redirects the light toward the ambient environment. The optic deflector is supported at a desired distance from, and with an appropriate orientation to, the end of the associated light pipe so as to substantially eclipse the beam of light discharged from the light pipe.

Abstract: A lamp device includes a light emitting unit for emitting a light beam, a light filtering unit, first and second focusing lenses, and a total internal reflection unit. The light filtering unit has a glass-holding frame and a pair of flat glasses which are fixed opposedly to the glass-holding frame. A space is formed between the flat glasses. A damping fluid is received in the space, and a plurality of colored glass fragments are dispersed in the damping fluid. The light filtering unit is positioned adjacent the light emitting unit so that the light beam from the light emitting unit can pass through the flat glasses and the colored glass fragments. The first and second focusing lenses are spaced opposedly from one another. The first focusing lens is positioned adjacent the light filtering unit.

Abstract: An optical correction layer for a light emitting apparatus having gaps in brightness at the light-emitting surface. The optical correction layer includes a plurality of optical correction regions centered over the gaps, and a plurality of optically transparent regions which overlay the remainder of the light-emitting surface. The optical correction regions include appropriately formed grooves which collect and redirect light adjacent the gap. The light is redirected to cover and effectively conceal the gap. The optically transparent regions permit light to travel through, without redirection.

Abstract: An information indicator suitable for information processors such as personal computers, word processors and the like includes a light source, a scattering plate which scatters light from the light source, an indicator plate irradiated with scattered light from the scattering plate, and a prism plate operatively arranged with respect to the scattering plate and the indicator plate and having a prism-like protuberance structure formed at a side thereof. The prism plate is so disposed that the prism-like protuberance structure faces the scattering plate, and the angle 2.theta. constituting the prism-like protuberance structure is defined by the formula, 2.theta..ltoreq.2/3.times.(.pi./2+2.times.arcsin (n'/n)), in this inequality, n is the refractive index of said prism plate medium, and n' is the refractive index of a material in which the prism plate is arranged.

Abstract: An improved illumination system employing two concave reflecting mirrors and a non-imaging reflector to concentrate energy (light) more efficiently is disclosed.

Abstract: A light emitting device includes a reflector assembly combined with a chassis. A light source is coupled to the reflector assembly. A reflective surface is formed on the reflector assembly to reflect light generated by the light source. A transparent cover is mated to the chassis enclosing the reflector assembly and the light source.

Abstract: The present invention relates to a lighting device for lighting the cabin of a motor vehicle, the device comprising an elongate light source disposed inside a housing. According to the invention, the lighting device further comprises: two windows transparent to the light flux emitted by the source, the windows being spaced apart from each other and comprising a top window through which light radiation is emitted in a generally horizontal direction, and a bottom window through which light radiation is emitted generally downwards; a first directional light reflector disposed between two respective first edges of the windows; and a second directional light reflector disposed between the two respective other edges of the windows; the directional light reflectors having shapes that combine to guide the light flux emitted by the source towards the transparent windows.

Abstract: A retrofit optical assembly is provided for automotive headlamps that includes a multi-planar mirror that cooperates with a tapered end of a light guide to reduce glare. In an asymmetric parabolic reflective surface arrangement, the multi-planar mirror is offset from the longitudinal axis of the light guide to equalize the magnification and image size. This also has the beneficial effect of reducing the amount of light loss outside of the parabola.

Abstract: An information indicator suitable for information processors such as personal computers, word processors and the like includes a light source, a scattering plate which scatters light from the light source, an indicator plate irradiated with scattered light from the scattering plate, and a prism plate operatively arranged with respect to the scattering plate and the indicator plate and having a prism-like protuberance structure formed at a side thereof. The prism plate is so disposed that the prism-like protuberance structure faces the scattering plate, and the angle 2.theta. constituting the prism-like protuberance structure is defined by the formula, 2.theta.>2/3.times.(.pi./2+2.times.arcsin (n'/n)), in this inequality, n is the refractive index of said prism plate medium, and n' is the refractive index of a material in which the prism plate is arranged.

Abstract: An arc lamp embodiment of the present invention comprises a triplet set of annular reflectors that gather light from an arc created between an anode and a cathode into essentially parallel beams that exit along the longitudinal axis of the generally cylindrical lamp through a sapphire window. A first of the three reflectors has a concave parabolic shape that reflects light out along the lamp axis in one bounce. A second of the three reflectors has a concave elliptical shape with a rear projecting focus and is back to back with the first reflector such that the open bowls of the reflectors face in opposite directions along the axis of the lamp. A third of the three reflectors has a convex parabolic shape that receives light bounced from the second reflector and gives it a second bounce out through an opening in the first reflector and then through the window, parallel to the lamp axis.

Abstract: An apparatus includes a reflective surface for high efficiency collection, transmission and emission of light. Light collected by an ellipsoidal and hyperboloidal portion of the reflective surface is directed into a light guide. Additionally, a paraboloidal portion may be added and used in combination with a lens element to distribute the light reflected by the reflective surface in a beam pattern. When used as an emitter lens profile is smaller than the overall diameter of the reflective surface. When used as a collector, the reflective surface receives and concentrates light onto the end of a light pipe.

Abstract: A headlight exclusively for irradiating a light beam for a vehicle passing by in the opposite direction includes a light source and a reflective mirror as essential components. The reflective mirror has a first reflective surface having a contour of revolving parabolic plane on an upper half of the reflective mirror, a second reflective surface having a contour of revolving parabolic plane arranged at the central part of a lower half of the reflective mirror, and two reflective surfaces each having a contour of a cylindrical parabolic plane arranged on the opposite side of the second reflective surface on the lower half of the reflective mirror. The last-mentioned reflective surfaces comprise a first surface and a second surface. The first surface serves to allow the light beam to be converged in the shape of substantially parallel light beam as seen in one direction, and the second surface serves in the same manner as the first surface in another direction at a right angle relative to the former.

Abstract: A frontal illumination system includes a light source and a finite plurality of reflecting surfaces. The reflecting surfaces can be characterized as the inner surfaces of a set of conical frustums arranged to approximate the illumination coming from the inner surface of a hemisphere. The light source is located within or adjacent to at least one of the reflecting surfaces. It emits light that is reflected off opposing portions of at least one, and preferably all, of the surfaces. The system is capable of illuminating the object from a very large solid angle, even though it is disposed in a substantially short axial space.

Abstract: An embodiment of the present invention is a luminaire for roughly uniform illumination of a square area without side glare. The luminaire uses a horizontally oriented arc tube lamp. A basket reflector surrounds the arc tube lamp and directs light out in a square pattern. A top aperture in the basket reflector is opposite to the illuminated square area. A bottom aperture, positioned in the basket reflector, permits light from the arc tube lamp to pass out to the illuminated square area. A center reflector is centrally positioned above the top aperture and has bow-tie shaped body and a pair of ends that are orthogonally oriented to the arc tube lamp. A pair of side reflectors with a plurality of faceted reflective surfaces receive light from the arc tube lamp that has been reflected from the center reflector. The side reflectors are positioned at opposite points outside the basket structure and are centered along a line perpendicular to the arc tube lamp.

Abstract: A method and system for producing a collimated beam of light having a substantially uniform flux density across the entire beam includes a light source adapted to emit light rays; a light integrator adapted to collimate the light rays and provide a uniform flux intensity; and a pair of reflectors adapted to reflect all of the light from the light source into the light integrator. The light integrator includes a fly-eye arrangement of light pipes. Each light pipe includes a pair of lenses adapted to bend the light rays towards the normal to collimate the light rays. In addition the light pipes may be juxtaposed to produce a collimated light beam having a uniform flux density and a desired geometrical configuration (i.e. rectangular, circular).

Abstract: A linear light source for a film scanner is disclosed which includes an elongated light integrating cavity, formed within a solid illumination body, having diffusely reflective walls. Light is introduced into the cavity through an input port, and an output beam of diffuse light is produced through a slot which is generally parallel to the longitudinal axis of the integrating cavity. In order to increase the efficiency of the light source, light is introduced into the cavity through a high collection non-imaging optical device formed as a hollow bore within the illumination body.

Abstract: An operating theatre lamp comprises a housing provided at the bottom with a light outlet opening (12) and in which a light source (13) is centrally arranged. The light source emits light all around toward a main ring concave reflector (14) which is mounted in the housing and deflects the incident light rays towards the light outlet opening (12) and concentrates them on a site of operation (15). At least one auxiliary ring reflector (17, 18) is provided between the light source (13) and the main reflector (14) outside of the light rays extending from the light source (13) toward the main reflector (14) which receives the light rays which would normally pass at the side of the main reflector (14) and deflects them toward locations of the main reflector (14) at which they are deflected toward the site of operation.

Abstract: Improved collection optics for a lighting system comprised of a light source, reflector and light receptive component include a multi-portion reflector or a non-imaging optical collector having a positive curvature located at an input end to the light receptive component. The collection optics capture additional lumens for transmission through the light guide. The optical arrangement can also collect different colors of light from the source that would otherwise be omitted from transmission through the light receptive component.

Abstract: An optical concentrator increases the power density from diffuse optical energy remitted by an optically diffusing surface by at least partially recollimating the diffuse optical energy. The concentrator includes an optical diffuser element illuminated at a first point by optical input energy and remitting incident optical energy. A reflective element has a reflective surface with a concentration point located at the first point and the reflective surface reflects diffuse optical energy incident on it from the diffuser element. At least one aperture is provided for the transmission of an output beam formed by a portion of the diffuse optical energy from at least the diffuser element.

Abstract: A headlight exclusively for irradiating as light beam for a vehicle passing by in the opposite direction includes a light source and a reflective mirror as essential components. The reflective mirror has a first reflective surface having a contour of a revolving parabolic plane on an upper half of the reflective mirror, a second reflective surface having a contour of a revolving parabolic plane arranged at the central part of a lower half of the reflective mirror, and two reflective surfaces each having a contour a cylindrical parabolic plane arranged on the opposite side of the second reflective surface on the lower half of the reflective mirror. The last-mentioned reflective surfaces comprise a first surface and a second surface. The first surface serves to allow the light beam to be converged in the shape a substantially parallel light beam as seen in one direction, and the second surface serves in the same manner as the first surface in another direction at a right angle relative to the former.

Abstract: A reflector includes a plurality of cylindrical bands having reflective outer surfaces and arranged about a common axis. The bands are sized and spaced such that, when mounted in front of a convergent beam spotlight, they prevent the rays of light from converging at a point so as to generate an intense heat which could damage a filter material, for example.

Abstract: Light assembly for providing a focused image of varying color hue and saturation intensity which includes means for providing a point light source, a filter set in which the filters are complementary colors, and a light mixing channel to pass additively mixed light rays to an objective lens system which produces the focused image.

Abstract: Given is an operating light, with one or several spotlights, each with a light source, that is shielded by a counter reflector in the direction of radiation. The stream of light is focused by the counter reflector and a reflector onto an optical system closing off the housing in the direction of radiation. To guarantee a homogeneous illumination of deeper surgical wounds also, the optical system is structured as a Fresnel lens made up of annular prisms that contain a dioptric central region and a catadioptric edge (rim) region. The slope of the flanks and the height of the annular prisms are dimensioned such that the light beams emanating from the Fresnel lens cut the optical axis at a distance that is all the greater the shorter the distance with which the light beams emanate from the Fresnel lens is away from the optical axis.