Abstract: A bandless seam between reflector and refractor sections of a luminaire globe formed of light-transmissive material and configured to improve optical performance as well as facilitate effective mounting of the reflector and refractor sections together, the invention finds particular utility with suspended luminaires ordinarily requiring a metal band or the like to join said sections into a luminaire globe. Opposing peripheral edge surfaces of the reflector and refractor sections are shaped according to the invention not only to cause even flow of adhesive between said surfaces to adhere said sections to each other but also to reduce brightness at the resulting seam between the sections, thereby improving luminaire appearance and reducing seam brightness and optical glint.

Abstract: The color temperature of light emitted by a luminaire having a hollow prismatic light guide is varied to counteract aesthetically undesirable reddening gradient of the emitted light. Reddening is caused by the light guide's dielectric material, which absorbs blue light rays such that proportionately more red than blue rays are guided to the light guide's far end than to points near the guide's light input end. Flare light rays which escape through the light guide near its light input end are color filtered and reflected back into the light guide. The filter color lies within a CIE-1931 chromaticity diagram {4800° Kelvin; 570 nm; 600 nm} color gamut triangle. Color filtering absorbs blue flare rays as a function of distance along the guide, imparting a near-end reddening gradient to the emitted light in inverse proportion to the far-end reddening gradient, giving the emitted light a constant apparent color, independent of distance along the guide.

Abstract: A technique is provided for increasing the parallelism of light emitted from a light source device. A light source device includes a light source lamp consisting of a discharge lamp and an elliptical reflector, and an aspherical lens. In the aspherical lens, an incidence surface is a plane surface, and an emission surface is an aspheric concave surface. By forming the shape of the aspheric surface into the shape of a quadric surface of revolution determined on the basis of a predetermined expression, light of high parallelism can be emitted.

Abstract: The invention concerns an illuminating spotlight emitting a narrow beam. The spotlight has a highly concentrated light source and a concave reflector for emitting an illuminating beam in a specific direction, along an emitting axis. A converging lens is interposed between the source and the reflector and in a plane passing through a conical segment. The source is bordered laterally on the reflector side with a sector of the converging lens providing a virtual image of the source located beyond the emitting axis, on the side opposite that of the lens. The virtual image of the light source is formed at the focus of the conical segment locally defining the reflector.

Abstract: A light fixture (10) is disclosed which includes junction box (11), an annular mounting plate, a canopy (21), a collar loop (23), a collar nut (25) and a light assembly (34) which includes a length of electric cord (41). The canopy (21) includes an outer shell (29) and central winding spool (30) which is mounted concentrically within the canopy outer shell (29) and concentrically about a mounting opening (22) within the canopy (21). The central winding spool (30) has a generally cylindrical central portion (31) and an annular flange portion (32) extending from the top of the central portion (31). The slack portion of the electric cord (41) may be wound about the winding spool (30) in order to stow it in a safe and efficient manner.

Abstract: A lens comprises a bottom surface, a reflecting surface, a first refracting surface obliquely angled with respect to a central axis of the lens, and a second refracting surface extending as a smooth curve from the bottom surface to the first refracting surface. Light entering the lens through the bottom surface and directly incident on the reflecting surface is reflected from the reflecting surface to the first refracting surface and refracted by the first refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens. Light entering the lens through the bottom surface and directly incident on the second refracting surface is refracted by the second refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens. The lens may be advantageously employed with LEDs, for example, to provide side-emitting light-emitting devices. A lens cap attachable to a lens is also provided.

Abstract: A lens comprises a bottom surface, a reflecting surface, a first refracting surface obliquely angled with respect to a central axis of the lens, and a second refracting surface extending as a smooth curve from the bottom surface to the first refracting surface. Light entering the lens through the bottom surface and directly incident on the reflecting surface is reflected from the reflecting surface to the first refracting surface and refracted by the first refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens. Light entering the lens through the bottom surface and directly incident on the second refracting surface is refracted by the second refracting surface to exit the lens in a direction substantially perpendicular to the central axis of the lens. The lens may be advantageously employed with LEDs, for example, to provide side-emitting light-emitting devices. A lens cap attachable to a lens is also provided.

Abstract: A light source unit comprising a lamp and a reflector for reflecting rays of light emitted by a light emitting element of the lamp and for focusing the reflected rays of light. In order to focus on a predetermined focal point the rays of light emitted by the light emitting element of the lamp and refracted by a cross-sectional shape of the lamp, the reflector has a concave reflective shape formed so as to satisfy a predetermined calculation expression.

Abstract: A backlight assembly for use in a transmissive display system is described. The backlight assembly includes a light source that illuminates a light chamber. A transmissive display is positioned adjacent the light chamber so that light that exits the chamber illuminates the transmissive display.

Abstract: A parabolic reflector lighting fixture for use as an in-the-wall or in-the-floor or in-the-ceiling light has its lamp shiftable in a lumen plane perpendicular to the axis of symmetry of the parabolic reflector through the focal point. The parabolic reflector is limited to reflect light only between the intersection of this lumen plane and the reflector and between this intersection and the apex of the reflector.

Abstract: A device for generating lighting effects, the device comprises a light modulating component which is formed from an optically transmissive material and has a multi-faceted surface and also a means for rotating the light modulator in use. The device further comprises a light source, which is positioned such that the light passes through the light modulating component to illuminate a light receiving surface. This, in turn, produces an optical illumination effect.

Abstract: A display device and a lighting system is provided for providing lighting in exterior and interior lighting applications, such as for center high mount stop lights (CHMSL) and other automotive lighting applications. The display device uses a light guide having light couplers hingedly attached to a light source end for receiving light from at least one light source. The light guide extends from the light source end with a light emitting surface and a light guide surface opposite the light emitting surface. The light emitting surface and the light guide surface extend in a direction substantially parallel to the direction of the light received from the light source. The light guide surface has a plurality of surface sections extending at angles relative to one another. The surface sections may be angled at alternating sections to direct light towards the light emitting surface using total internal reflection.

Abstract: A headlight having an ellipse group reflecting surface as a main reflecting surface and a projection lens further includes a second reflecting surface, a third reflecting surface, and a ring-shaped lens. Direct light from a light source reaching to a space between the main reflecting surface and the projection lens is reflected by the second reflecting surface backward. The reflected light from the second reflecting surface is further reflected by the third reflecting surface, and then is adjusted with the ring-shaped lens. Light directly emitted from the light source and being ineffective in the conventional headlight can be collected using the second and third reflecting surfaces, and forwarded in an illumination direction by passing through the ring-shape lens such that the shape of the light is controlled to provide an appropriate shape, thereby contributing to the formation of light distribution characteristics and increase in the light intensity.

Abstract: A reflector for use with light emitting devices. Multiple reflective surfaces redirect light emission components of the light emitting device, for example a light emitting diode, into a desired direction. The different light emission components including a total internal reflection light emission component. Paired light emitting devices share common reflector surfaces creating an oval light pattern. Holes in the reflector accommodate electrical components and enhance heat dissipation. A deflector pattern on non-reflector surfaces minimizes sun phantom effect when the reflector is used, for example, in a traffic signal.

Abstract: A lighting device for lighting a display surface is described. The lighting device includes a light source, a lighting well and a lens, which is situated between the light source and the display surface. This yields a homogeneous and efficient lighting of a display surface.

Abstract: This invention relates to searchlight type light devices including underwater light devices and automobile headlights. A light device in accordance with the present invention provides light beam compression along the optical axis and thus increases considerably the intensity or optical density of the beam. The light device includes a light source, a main concave reflector, and a lens projection system, the main concave reflector and the lens projection system being aligned relative to the optical axis and the light source being located between the reflector and the lens projection system, on the same optical axis. In addition, the main collecting pre-reflector lens is mounted between the light source and the main reflector, the main reflector's concave surface being implemented as a segment of sphere, and the light source being located in the focal point of such main reflector. Said main collecting pre-reflector lens has a focal length exceeding the main reflector's focal length by a factor of 1.

Abstract: A lens mounted to a light emitting diode package internally redirects light within the lens so that a majority of light is emitted from the lens approximately perpendicular to a package axis of the light emitting diode package. In one embodiment, the light emitted by the light emitting diode package is refracted by a sawtooth portion of the lens and reflected by a total internal reflection portion of the lens.

Abstract: A vehicle indicator lamp having a transparent cover that performs horizontal light radiation at a wide angle in which a reflecting surface of a reflector is formed so as to diffusion-reflect the light from a filament of the light source into a forward direction. Horizontal deflection lens portions are formed on the center area of the transparent plain cover and near the lamp's optical axis so as to horizontally deflection-permeate the direct light from the filament in a direction away from the lamp's optical axis.

Abstract: A spotlight has a curved reflector (1, 1′) and a lamp (2, 2′) arranged inside a cavity formed by the reflector (1, 1′). The lamp (2, 2′) and the reflector (1, 1′) are movable relative to one another in a direction of a main optical axis of the spotlight. A converging lens (5) is arranged in front of the reflector (1, 1′) in a direction of light emission. A dispersive lens (6) is arranged between the reflector (1, 1′) and the converging lens (5).

Abstract: The present invention relates to a multi-angle reflector for use in a backlight unit. The back light unit comprises a plurality of lamps, a multi-angle reflector and a diffuser. The multi-angle reflector comprises a plate and a plurality of reflecting protrusions. The plate has a top surface toward to the lamps. The reflecting protrusions are respectively disposed on the top surface of the plate. Each reflecting protrusion has a reflecting surface. The reflecting surfaces have a plurality of reflecting angles corresponding to the top surface of the plate so that the light from lamps are adapted to reflect to the diffuser according to the reflecting angles. Therefore, according to the invention, the reflecting angles of the reflecting surfaces on the reflecting protrusions can be adjusted so as to suit to various actual conditions. The lights are uniform and the utility of the lights is improved. Because the reflecting protrusions are small, the reflector can be made into a thin type.

Abstract: A lighting device has an LED light source and a lens. The lens includes a light emitting surface arranged substantially parallel to a wall of a container when the device is attached to the wall, and a first light receiving surface. The first light receiving surface receives light that is emitted from the LED light source in a direction slanted with respect to the light emitting surface, and takes a concave surface configured such that a distance of the first light receiving surface to the light emitting surface increases from one end to the other end of the lens. The LED light source is disposed while being confronted with one end part of the lens.

Abstract: A vehicle lamp such as a rear combination lamp comprising: a reflex reflector lens that is fitted in a front lens of the lamp so as to reflect the light from the outside the vehicle lamp back to the outside, and a light reflector that is formed in the front lens so as to face the reflex reflector lens and to entirely reflect the light from a light source toward the light source. The vehicle reflex reflector lens is made of a material that has a lower heat resistance than the front lens.

Abstract: The optical system for the Fresnel lens light has an ellipsoidal reflector (1), a light source (2) and a Fresnel lens (3). The distance (a) between the Fresnel lens (3) and the reflector (1) is related to the distance (b) between the light source (2) and the reflector (1) and is determined by the selected aperture angle for the propagated light beam, e.g. to provide spotlight or floodlight. The distance (b) is adjusted by moving the light source (2) from a first focal point (F1) in a direction toward or away from the vertex (V) of the reflector (1). The ellipsoidal reflector (1) is made of a metallic material or a transparent material. At least one of the respective surfaces on opposite sides of the reflector has a number of thin layers. Surfaces of the at least one Fresnel lens and/or the reflector can be structured to provide more uniform illumination of a given area. The optical system is useful for lights for film, stage, studio and photography.

Abstract: An LED indication lamp having desired luminous intensity distribution characteristics without need for any light-emitting diode of special shape. The LED indication lamp comprising a plurality of light-emitting diodes and having specified luminous intensity distribution characteristics is further provided with a condenser lens. The light-emitting diodes are arranged in a pattern corresponding to a luminous intensity distribution pattern determined according to the luminous intensity distribution characteristics. The light-emitting diodes thus arranged and the condenser lens are arranged so that the light emitted from the light-emitting diodes in the luminous intensity distribution pattern through the condenser lens satisfies the luminous intensity distribution characteristics.

Abstract: An open type luminaire lens including a non-circular reflective lens having a metalized exterior surface and a prism section, the non-circular reflective lens having a shape generally defined by the combination of two parabolas, the prism section including and array of external reflecting prisms of varying predetermined shapes and varying predetermined sizes for use in providing a desired efficient light distribution.

Abstract: From a quasi point source, light distribution means produce a selected one or ones of broadly distributed ambient light, non-shadowing task illumination, multi-beam display lighting, projective lineal lighting and projective surface washing illumination lineally or radially distributed. Collimation optics shape light from a quasi point source into a disc of selected axial thickness. Containment optics contain divergence of and direct light from the collimation optics to distribution optics. The distribution optics modulates and redirects the radiant energy into a shape or shapes useful in illuminating architectural space. The distribution optics may reflect or refract light to direct and shape it for a particular architectural illumination requirement. The efficient combination of the optics provides for a system of minimized thickness, permitting maximum flexibility in integration with or within shelves, soffits and other structural members.

Abstract: A first reflection surface of a reflector is set up for a first brightness-intensity distribution pattern to be projected through a flat lens to conform to a target brightness-intensity distribution pattern. A displacement between the target brightness-intensity distribution pattern and a second brightness-intensity distribution pattern is calculated, the second brightness-intensity distribution pattern being reflected by the first reflection surface and to be projected through a curved lens. A second reflection surface of the reflector is set up for the displacement to become substantially a zero.

Abstract: The present invention includes an illumination assembly consisting of a light source such as a light emitting diode (LED) that produces a near field image and a means of imaging and focusing the near field image. The LED includes a chemical light emitting chip, a reflector cup and a phosphor coating over both the emitter chip and the reflector cup to produce a uniform, concentrated, high intensity near field image. The LED also has a clear housing having a narrow angle beam distribution. The means for imaging and focusing the near field image is a convex optical lens having a radius of curvature equal to twice the overall thickness of the lens. The optical lens is installed in fixed spaced relation to the LED such that the lens is imaging the reflector cup of the LED rather than the light on the surface clear LED housing.

Abstract: A fiber optic lamp includes a lamp housing having a stem section with a passageway therein and a reflector section having a reflective surface. The lamp housing also has first and second circular ledges for receiving and holding in place at least one lens within the lamp housing. A fiber optic cable is provided having a first end for insertion into the passageway of the lamp housing for transmitting light. The second end of the fiber optic cable is connected to a light pump having a light source therein for generating and transmitting light through the fiber optic cable. The fiber optic cable is connected to a socket member of a fixture housing for mounting the stem section of the lamp housing in the fixture housing.

Abstract: A light emitting device in accordance with an embodiment of the present invention includes a diffractive optical element, a first light emitting diode emitting first light having a first range of wavelengths, and a second light emitting diode emitting second light having a second range of wavelengths. The first light is directed onto the diffractive optical element at a first range of angles of incidence, and the second light is directed onto the diffractive optical element at a second range of angles of incidence. The diffractive optical element diffracts at least a portion of the first light and at least a portion of the second light into the same range of angles of diffraction to obtain light having a desired range of wavelengths. A light emitting device in accordance with an embodiment of the present invention can efficiently mix the outputs of two or more light emitting diodes to form a substantially uniform output of, for example, white light.

Abstract: An LED diffusion assembly having a concave tip portion shaped and dimensioned for the diffusion of light emitted thereby. The assembly includes a bulb portion and first and second leads extending within the bulb shaped portion. The assembly also includes LED dice embedded in the bulb shaped portion and coupled to the first and second leads in a manner allowing for transfer of electrical energy to the LED dice. The bulb portion includes a concave tip substantially opposite the LED dice, wherein the concave tip is shaped and dimensioned for diffusing light emitted by the LED dice.

Abstract: A zoom strobe device is provided with a light emitting unit, which includes a light source and a reflector and a light collecting lens that collects the light emitted by the light emitting unit. The light emitting unit and the light collecting lens are movable relative to each other in a direction of an optical axis of the light collecting lens. The light collecting lens is configured such that a light emitting unit side surface has a positive power, and a surface opposite to the light emitting unit side surface (i.e., the object side surface) has a negative power. The light collecting lens has a positive power as a whole.

Abstract: A parabolic reflector lighting fixture for use as an in-the-wall or in-the-floor or in-the-ceiling light has its lamp shiftable in a lumen plane perpendicular to the axis of symmetry of the parabolic reflector through the focal point. The parabolic reflector is limited to reflect light only between the intersection of this lumen plane and the reflector and between this intersection and the apex of the reflector.

Abstract: A light reflector (10) comprises a plastics reflector bowl (11) having an inner surface (21), an outer surface (23), a narrow aperture (14) and a wide lower diffuser lens (24). Mounting means (12) is provided at the narrow aperture for mounting the reflector on to a housing for control gear of a light source. The narrow aperture is adapted to house the light source. The reflector bowl (11) and mounting means (12) are formed as a single reflector unit by plastics moulding with at least one of the inner or outer surfaces being surface-metalized to a reflective finish. There is also provided an open version of the light reflector and a method of forming a light reflector.

Abstract: A shape of a vertical cross section and a shape of a horizontal cross section in a lens are formed in a convex shape. Accordingly, even when a prism is not formed, alight transmitting through the lens is largely refracted and an interior section is hard to be visible. As a result, it is not necessary to finish a surface of a reflection surface of a reflector so as to have an optical performance equal to or more than an optical performance required for reflection with taking an appearance into consideration, and a working operation can be easily executed in comparison with the conventional one.

Abstract: A spotlight has a curved reflector (1, 1′) and a lamp (2, 2′) arranged inside a cavity formed by the reflector (1, 1′). The lamp (2, 2′) and the reflector (1, 1′) are movable relative to one another in a direction of a main optical axis of the spotlight. A converging lens (5) is arranged in front of the reflector (1, 1′) in a direction of light emission. A dispersive lens (6) is arranged between the reflector (1, 1′) and the converging lens (5).

Abstract: In a light emitting diode 1 having a light emitting chip 2 and a lens portion 3 for containing the chip 2, the lens portion 3 has a direct light area 5 for use in emitting the light emitted from the chip 2 outside as direct light and a reflected light area 6 for use in emitting the light emitted from the chip 2 and passed through the lens portion 3 toward a reflective member 7 provided outside the lens portion 3, in which the direct light area 5 is formed so as to have a configuration irrotationally symmetric around the optical axis of an element, and the peripheral portion of the direct light area 5 or the side portion of the lens portion 3 is used as the reflected light area 6, which is formed so as to have a configuration rotationally symmetric around the optical axis of the element.

Abstract: A vehicle lamp having a hollow body lens unit constructed by integrally forming a lamp body and a front lens which constitute a lamp chamber, a light source provided in the body lens unit, and a diffusion step such as a cylindrical step having step elements, each of which has constant directivity, the diffusion step being provided on the outer surface of the lens portion of the body lens unit. The step elements of the diffusion step on the outer surface of the lens portion are lined up in a predetermined direction and each have directivity, so that the mud and dust do not easily stick to each step element.

Abstract: The invention relates to a lighting installation, in particular as a danger light, obstruction light or daytime and night-time marker, having at least one luminaire, at least one lighting means being arranged in a housing of the luminaire.

Abstract: The present invention relates to a component for a motor-vehicle lighting or indicator device. According to the invention, it consists of a transparent material within which light-diffusion foci consisting of local discontinuities are situated only at predetermined locations in order to diffuse the light emitted by a light source associated with the lighting or indicator device.

Abstract: An LCD is provided, by which damage to an irradiating tube can be prevented, and the unevenness of light in a display section can be reduced. In the LCD, the display section and the light-generating section are detachably attached to each other. Elastic members for supporting the irradiating tube are provided in the light-generating section in a tightly contacting manner, and a light-transmitting member for transmitting the light from the irradiating tube is positioned at the light-emitting side of the light-generating section.

Abstract: A vehicle indicator lamp includes a reflector having a diffusing and reflecting function that increases the lamp fixture efficiency by eliminating the loss of reflected light. The structure includes a reflector 14 having a reflective surface 14a which diffuses and reflects light forward from a light-source bulb 12 arranged in a lamp fixture reference axis Ax, and a transparent lens 16 in front of the reflector 14. The reflective surface 14a is formed such that the inner peripheral edge region 14a1 thereof radiates reflected light in a direction substantially parallel to the lamp fixture reference axis Ax, while the outer peripheral edge region 14a2 thereof radiates reflected light in a direction near the light fixture reference axis Ax. Consequently, the diffused and reflected light from the reflected surface 14a is not blocked by either the light-source bulb 12 or the standing wall 14c of the reflective surface outer peripheral edge, thereby substantially eliminating the loss of reflected light.

Abstract: A projection-type vehicle light includes a light source, a front lens that includes a plurality of aspherical lenses, and a reflector unit for directing reflected light rays incident to a corresponding aspherical lens. A plurality of elipse group reflector units can be used having a common first focus located round the light source, and a plurality of second foci respectively positioned between a focus of a corresponding aspherical lens and a front of the corresponding aspherical lens. The projection-type vehicle light provides a unique appearance with superior transparency of the front lens and a three dimensional feeling when viewed. The projection-type vehicle light also has a high efficiency of light rays reflected by a reflecting surface incident to an aspherical lens, and provides horizontally wide and highly uniform light distribution patterns.

Abstract: An open type luminaire lens including a non-circular reflective lens having a metalized exterior surface and a prism section, the non-circular reflective lens having a shape generally defined by the combination of two parabolas, the prism section including and array of external reflecting prisms of varying predetermined shapes and varying predetermined sizes for use in providing a desired efficient light distribution.

Abstract: A reading lamp for a vehicle interior having a light source arranged in a lamp housing and at least one optical element which produces a cone of light for reading, whereby a reflector system is provided in the lamp housing such that light can be input into the reflector system through a color filter so that colored light is produced concentrically with the cone of the reading lamp.

Abstract: A light source device has a light shielding member having an aperture, a light source arranged on one side of the light shielding member, and a converging member arranged relatively with respect to the light source and the light source to thereby converge light emitted from the light source in the aperture or in a vicinity of the aperture. Another type of light source device has a single light source, and a converging member for converging light from the light source to thereby distribute the light to at least two points. Still another type of light source device has a light source, and a reflecting mirror arranged to enclose a side of a light emission direction of thelightsource, the reflecting mirror reflecting light emitted from the light source in a direction except the light source so that the light is radiated outside.

Abstract: A luminaire for distributing light from a light source (7). The luminaire includes one or more reflectors (2, 3), placed symmetrically about the lamp (7) to reflect the light output from the lamp (7). One or more light spreading devices (4, 5) are provided around the reflectors (2, 3) to receive the light reflected by the reflectors (2, 3). Such a luminaire provides for uniform distribution of light while minimizing glare from the light fitting.

Abstract: A lighting device has an LED light source and a lens. The lens includes a light emitting surface arranged substantially parallel to a wall of a container when the device is attached to the wall, and a first light receiving surface. The first light receiving surface receives light that is emitted from the LED light source in a direction slanted with respect to the light emitting surface, and takes a concave surface configured such that a distance of the first light receiving surface to the light emitting surface increases from one end to the other end of the lens. The LED light source is disposed while being confronted with one end part of the lens.

Abstract: A display system (800) combining light from two sources into a single light beam that is modulated by a light valve to form an image. Light from a first light source (802) is anamorphically focused along a first light path by a first lens group (804) and a second lens group (806). The first and second lens groups are typically cylindrical lenses having perpendicular axes. The two lens groups focus the light from the first light source onto an integrating rod (808). In a similar manner, light from a second light source (810) is anamorphically focused along a second light path by a first lens group (812) and a second lens group (814) onto the same integrating rod (808). Light from the integrating rod (808) illuminates a light valve (816). Light valve (816) typically is a micromirror device or a liquid crystal panel. The light valve modulates the light from the integrating rod (808) to form a modulated light beam that is focused by projection optics (822) onto an image plane (824).

Abstract: A projection type lamp is disclosed that includes a semi cylindrical lens portion having a focus line oriented in a horizontal direction. Similar to spherical lens portions can be formed at the right and left side of the semi cylindrical lens portion to produce a projection lens having a relatively long horizontal diameter. The lamp includes a reflector that has a first focus point in the vicinity of the light source of the projection type lamp and a second focus point in the vicinity of the focus line in the vertical cross-sectional view. The reflector can include a free curved surface for adjusting light rays emitted from the light source to a predetermined illuminating angle. The semi cylindrical portion of the lens does not function optically in the horizontal direction such that light distribution patterns can be easily determined and manipulated by the reflector.