Abstract: An LED module that includes an LED (light-emitting diode) and a rotationally symmetrical, bowl-shaped collimator lens is provided.

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: Luminaire having an optical waveguide plate, which has a first light guiding surface, and having a light reflecting area—arranged opposite the latter—of an opaque reflector, which reflects light back into the optical waveguide plate in such a way that at least part of said light emerges from the second light guiding surface facing away therefrom. The light reflecting area has a very large number of reflecting area regions, which extend obliquely with respect to one another and obliquely with respect to the opposite first light guiding surface of the optical waveguide plate.

Abstract: A luminaire for creating a uniform light pattern on an architectural surface, in the form of uniformly diminishing light with the distance from the light source. The luminaire includes a quasi point light source arranged vertically in the vicinity of an architectural surface, and a multi-zone refractor assembly radially surounding the light source and bending the light from the source toward the architectural surface. There is a reflector above the light source for reflecting light from the source toward the architectural surface. The refractor assembly may include a Fresnel lens, a lower refracting condenser ring, a toroidal reflector, or a conical reflecting surface. The uppermost zone of the refractor assembly can include a reflector structure which collects and projects 180 degrees of the light from the light source in the same radial zone as the reflector structure toward and onto an upper conical reflector, and the reflector structure can include a parabolic reflector and a conical reflector.

Abstract: A headlight for a motor vehicle comprises a light source, a mirror and a transparent optical deflection element placed in front of the mirror, the mirror being capable of cooperating with the light source in order to generate a beam delimited by an upper cut-off line, and the deflection element being capable of providing a generally horizontal spread of the light, without substantially modifying the vertical distribution of the light.

Abstract: A transparent film scanner having a light source with a diffuser and a reflector includes a light source for generating a primary light that is diffused by a diffuser to obtain a more uniform secondary light. The secondary light source is then reflected by a reflector to produce a tertiary light for illuminating the film. With a diffused secondary light, the distance between the reflector and the film can be reduced, thus reducing the size of the scanner.

Abstract: A lamp chamber is defined by a translucent cover and a lamp body supporting a light source bulb. A translucent panel is provided within the lamp chamber. A front surface of the translucent panel is half mirror-treated. An upstanding wall portion extends in a fore-aft direction in the lamp body to surround the translucent panel. A plurality of quasi-reflector elements are formed in an inner surface of the upstanding wall portion. The half mirror portion is inclined at a predetermined angle with respect to the upstanding wall portion. When the lamp is off, a reflection of the quasi-reflector elements of the upstanding wall portion is seen in the half mirror portion.

Abstract: A flood light includes a lamp that is located at a focus of a reflecting mirror having a reflecting surface whose cross-section is oval and partially arcuate. A concave lens having negative refracting power is disposed between first and second foci about which an elliptical reflecting surface of the reflecting mirror is disposed. Some light rays from the lamp pass directly from the lamp through the lens while other rays from the lamp are reflected by the mirror before passing through the lens. Generally speaking, on the upstream side of the lens, the reflected rays enter the lens outboard of the rays that pass directly from the lamp to the lens. This construction provides a small flood light that has a high optical output, and effectively uses bundles of rays emitted from the lamp to produce a luminous intensity distribution desirable as light for range finding.

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 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 shape of a vertical cross section and a shape of a horizontal cross section in a lens are formed in a recess shape. Accordingly, even when a prism is not formed, a light 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 light, wherein the light distribution formation is executed by a first reflection surface made of one of right and left, or upper and lower halves to the optical path of the same direction as the light front direction, a light source disposed near the focus of said first reflection surface and mounted with it's bulb central axis inclined to the first reflection surface side in respect to the light front direction, a second reflection surface made of one of right and left, or upper and lower halves opposed in the closing direction to said first reflection surface in the form of partly open bivalve across this light source and having the focus near said light source, and a third reflection surface disposed outside said first reflection surface and reflecting the light reflected from said second reflection surface to the light front direction.

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 lighting device is described which comprises a light emission surface (11) and a plurality of substantially point-shaped light sources (21) such as, for example, LEDs, and which is suitable in particular for backlighting liquid crystal displays such as LCD picture screens, or for use as a planar light radiator. The lighting device is characterized in particular in that an optical waveguide plate (1) is provided with a plurality of cavities (20) for the light sources (21), which cavities are covered with a first reflecting layer (204) on their upper sides (203) facing the light emission surface (11), while the coupling of the light into the optical waveguide plate takes place through side walls (201) of the cavities. A very homogeneous distribution of the luminous intensity on the light emission surface is achieved thereby.

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: A plane-shaped lighting device has a light-directing plate and a light source that is placed in contact with or in the proximity of the light-incident surface of the light-directing plate, and the light source is constituted of a plurality of LED lamps each of which has an LED chip for emitting light and a semispherical lens for directing the light from the LED chip into the light-directing plate. Here, the distance from the LED chip to the top of the semispherical lens is set to be 1.8 times as long as the radius of curvature of the semispherical lens. This arrangement allows the light emitted from the LED chip to be efficiently incident on the light-incident surface of the light-directing plate, thereby improving the light-incidence efficiency to the light-directing plate. Further, the application of this plane-shaped lighting device to display devices makes it possible to improve the efficiency of light utilization, and consequently to provide thinner display devices with high visibility.

Abstract: A prism unit has transmitting/totally-reflecting surfaces, which cross each other, formed using at least one prism. Light emanating from a light source falls on the prism unit. The light is transmitted or totally reflected from the transmitting/totally-reflecting surfaces according to an angle of incidence at which the light falls on the prism unit. Consequently, transmitted light is radiated forwards, while totally-reflected light is directed laterally. A reflecting member is located laterally in order to cover the prism unit, whereby light totally reflected laterally by the prism unit is reflected forwards. Since the prism unit is integrated with the reflecting member, light emanating from the light source can be efficiently converged on a narrow forward effective area.

Abstract: An illumination device (flash device), which is suited to cameras, includes a flash discharge tube, and an optical member having an entrance surface which a light beam from the flash discharge tube is made to enter and an exit surface from which the light beam having entered the entrance surface is made to exit, wherein a plurality of prism portions are arranged at the exit surface of the optical member, and wherein a part of the plurality of prism portions totally reflect a part of the light beam having entered the entrance surface. The totally-reflected light beam returns to the entrance surface or a reflector and is again reflected therefrom to be efficiently radiated toward the subject.

Abstract: Light guiding device for an elongate light source having a body of substantially tubular or tube sector shape of transparent material for substantially coaxially receiving the light source and provided at its internal surface with grooves, notches or the like extending parallel to the axis of the body and engaging each other.

Abstract: A vehicle lamp fixture is disclosed in which a truncated bowl-shaped reflector 6 is formed as a single unit in front of each respective LED 5. Each reflector is formed from a transparent substance and has an aperture in the front surface. Each reflector also has a reflective surface 6b that totally reflects light from the LED 5 and a light conductive member 6c that conducts at least a portion of light reflected by the reflective surface toward the front of the light fixture. A transparent front lens can thereby be used that does not include light-distributing facets.

Abstract: In conventional projector lamp configurations, the shade which is provided for adjusting the luminous intensity distribution property reduces the efficiency of use of light beams and also reduces the area through which light is emitted, resulting in a poor visibility for cars coming from the opposite direction.

Abstract: A light assembly including a central axis along which a light source is intended to be located. A ring lens at least partially surrounds the central axis, the lens having a central projection along a projection axis for projecting the light passing through the lens along the projection axis. The central projection and projection axis are at an angle with respect to the central axis and the angle is not a right angle. The ring lens has a conical entry face which is at an angle with said central axis. Another embodiment of the light assembly includes a central axis on which a light source is located and a ring lens at least partially surrounding the central axis. The lens is constructed and arranged to provide collimated light horizontally about a plane which is at a right angle to the central axis, and non-collimated light vertically and in directions which are perpendicular to tangents at the exit points of the rays from 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: A headlight reduced in size and ensuring sufficiently high efficiency is provided. The headlight includes a light source, a cylindrical condenser lens surrounding the light source from its periphery to transmit light incident from the light source, and a reflector surrounding the light source and the cylindrical condenser lens from their backsides to reflect the light transmitted through the cylindrical condenser lens frontward.

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.

Abstract: A lighting fixture that has a plurality of differently fashioned regions wherein different light emission properties occur. The fixture includes at least one hollow light guide having a cavity, one or more bulbs that emit light into the cavity of the hollow light guide, and at least one light output device having a light-refractive structure for outputting light from the cavity of the hollow light guide to a light exit face. The light output device forms at least a part of the wall of the hollow light guide and the light of at least one bulb that directs light into the hollow light guide is beamed out in different regions of the lighting fixture that have different light emission properties.

Abstract: An Illumination apparatus according to the present invention is provided with a light source, a mirror that reflects a light emitted by the light source and converts it to a convergent light beam, and a collimator lens that collimates the convergent light beam reflected by the mirror to a collimated light beam. Here, the collimator lens is provided with a region positioned at a central region with respect to an optical axis and having a negative focal distance, and a plurality of concentric annular regions centering with respect to the optical axis and having focal distances different from each other.

Abstract: An LED signal module includes a casing defining a cavity. Within the cavity is an array of LEDs. Individual reflectors are placed around individual LEDs of the array. The individual reflectors are structured to receive direct light from their associated individual LEDs and substantially to prevent direct light from their associated individual LEDs from impinging upon the individual reflectors of other LEDs of the array of LEDs. Also included, and covering the cavity, is a lens shaped to direct the output luminance of the LEDs below a horizontal axis of the module.

Abstract: A vehicle interior lamp assembly comprises a light assembly carried within a housing. A cover is snap fit to the housing and carries a lens in registration with the light assembly. The light assembly includes a dome shape reflector, into which a light bulb is positioned, and a light switch slidingly positioned within a slotted flange attached to the housing. A light switch actuator, in operational connection with the light switch, is captured by the cover. The lens is formed with a double convex middle region and a pair of outer regions formed with a plurality of serrations which reflect light toward the light reflector to thereby provide a uniform pattern of illumination about a preselected area. In one preferred embodiment, the housing supports a pair of lighting assemblies to permit selective illumination of a passenger's seat, table, or the like.

Abstract: A rear indicating light for a motor vehicle comprises a light source, a bonnet in front of the light source, and an optical plate in front of the bonnet. The bonnet has means for distributing essentially uniformly the radiation it receives from the light source, over at least part of the surface of the flat optical plate, which is formed with striations to align the radiation along the optical axis. These striations are grouped in at least one discrete zone on the surface of the plate, the remainder of this surface consisting of at least one optically neutral zone, while the distributing means are adapted to distribute at least some of the radiation from the light source towards the discrete striated zones.

Abstract: A lighting system consists of a first reflector having a plurality of reflecting faces disposed obliquely with an angle of about 45 deg. with respect to the optical axis of an incident coherent light, respectively, and spaced a predetermined distance from each other in the optical-axial direction of the incident coherent light, a second reflector having a plurality of reflecting faces disposed obliquely at an angle of about 45 deg. with respect to the optical axes of reflected light beams, respectively, from the first reflector, and spaced a predetermined distance from each other in the optical-axial direction of the incident coherent light, and a lens array having a plurality of lenses disposed in planes generally perpendicular to the optical axes of the reflected light beams from the second reflector.

Abstract: The invention is related to a reflector lamp comprising a parabolic primary reflecting section, a parabolic or spheric secondary reflecting section joined to the primary reflecting section, and an incandescent or discharge light source. The secondary reflecting section has faceted surfaces which longitudinally extend along the surface thereof so that most or substantially all the light reflected by the faceted surfaces avoids the light source and thus the light, which would be absorbed or scattered by the light source, is minimized or substantially eliminated.

Abstract: There is provided a lamp composed of a light source, a tilted ellipsoidal rotation surface reflector, and an annular cylindrical lens. The tilted ellipsoidal rotation surface reflector is formed of an ellipsoidal rotation surface emerging when an ellipsoid, having a first focal line located on the center axis of the light source and adjacent the light source and a second focal point located on an oblique line passing through the first focal point and tilted appropriately from the light-source center axis and assumed on a plane containing the light-source center axis and the oblique line, is rotated around the light-source center axis. The annular cylindrical lens is obtained by rotating, around the light-source center axis, the cross-sectional configuration of an aspheric lens having a focal point adjacent the second focal point of the ellipsoid and having an optical axis nearly parallel to the light-source center axis.

Abstract: A lamp is composed of a light source, a composite reflector consisting of a plurality of reflecting surface units, and aspheric lenses provided to correspond to the individual reflecting surface units. The composite reflector includes a first and a second reflecting surface units. Each of the first reflecting surface units is formed of a reflecting surface configuration obtained by cutting, radially around a center axis of the light source, a portion from a spheroid having a first focal point located on the center axis and adjacent the light source and a second focal point located on a line passing through the first focal point and tilted appropriately from the center axis such that the cut portion spans a range of 15° to 90° around the center axis. Each of the second reflecting surface units is composed of a second reflecting surface configuration obtained by similarly cutting a portion from a spheroid having a second focal point located external to the first reflecting surface configuration.

Abstract: A surface light source device has a light conducting plate with a light source disposed adjacent to one of its side surfaces. At least one pattern is formed on the upper light emitting surface of the light conducting plate and/or the lower surface. The pattern is provided such that the sum of average slope angles of the light emitting surface and the opposite surface on a first sectional surface which is perpendicular to both the light incident surface and the light emitting surface is greater than the sum of average slope angles of the light emitting surface and the opposite surface on a second sectional surface which is parallel to the light incident side surface. Image display apparatus incorporating such a surface light source device have improved brightness and other characteristics.

Abstract: The light emitted by diodes of the Gallium Nitride type which comprises two distinguishable emissions is controlled by a single optical element (10) in the form of a lens having a central part and an annular part with different optical powers. The total output light of the diode may be collimated or brought to a common focus. The single optical element is preferably injection moulded and the annular part takes the form of a diffraction lens. The first part (12) is preferably a refractive lens which has a different optical power to the second part (14)which is preferably a diffractive lens. The optical power of the refractive lens (12) (the first optical power) and the optical power of the diffractive lens (14) (the second optical power) are selected to match the light source that the lens (10) is to be used with.

Abstract: A lighting device (100) for an automobile has a light source (101), a reflector (102), and a convergent lens (103) positioned in front of the reflector in order to form an illuminating light beam. The reflector is of the hyperbolic type with an internal focus (F.sub.1), and an external focus (F.sub.2) positioned behind said reflector in a region of the focus of said convergent lens, the light source being placed in a region of the internal focus of said reflector so that the latter forms a virtual light source in the region of the focus of said convergent lens.

Abstract: A lamp including a light source, a petaline reflector, and aspheric lenses. The petaline reflector is formed of a plurality of reflecting surface units combined radially around the center axis of the light source. Each of the reflecting surface units is obtained by cutting, radially around the center axis, a portion from a spheroid having a first focal point located on the center axis and adjacent the light source and a second focal point located on a line passing through the first focal point and tilted appropriately from the center axis such that the cut portion spans a range of 15.degree. to 60.degree. around the center axis. The aspheric lenses are disposed to correspond to the respective second focal points of the reflecting surface units of the petaline reflector and converge reflected light beams from the respective reflecting surface units. Shades for forming a light distribution pattern are disposed at the respective near-focal points of the aspheric lenses.

Abstract: A device is provided to diffuse a beam of light, the device consisting of a plurality of truncated cells nested together along their respective sidewalls for collecting and diffusing the light rays as they extend along the plurality of cells having an expansive, tapered interior volume. The device diffuses the main light beam in a headlamp, for example, thereby substantially reducing the glare experienced by oncoming drivers and permitting high beams of the headlamp to be used in the presence of the oncoming drivers. The device of the present invention is retrofitable to existing headlamps. In another embodiment of the present invention, a concave lens is disposed in the headlamp assembly to diffuse the main light beam prior to it entering the truncated cells, while each one of the cells of the dispersion device is also provided with its own respective concave lens to augment the diffusing effect.

Abstract: A lighting fixture comprises a housing, an induction lamp inside the housing, a lens disposed to direct light away from the housing in a light pattern, and a light reflector inside the housing which reflects light in cooperation with the lens. The light pattern produced by the lighting fixture has a substantially uniform lateral illumination at a given radial distance from the center of the lens. The lighting fixture also provides a high level of directional illumination in the vertical direction when mounted to a ceiling. The lighting fixture can be surface or recess mounted. The lighting fixture can comprise a tee electrical conduit to allow through feed wiring from one fixture to another fixture. The lighting fixture is particularly suitable for use in conventional walk-in coolers and freezers used in supermarkets.

Abstract: There is described a multi-configurational, multi-functional electrical lighting fixture for high-abuse application and structured for surface mounting. The fixture includes a lens of U.V. stabilized, high impact-resistant, injection molded polycarbonate plastics, integrally formed with two selective, separate and distinct, high-performance reflector/refractor surface systems carried by the single lens, as separate zonal areas. The first system generates a long and narrow "throw", and the second system a short and wide "throw". A molded, opaque "eyelid" provides optimum lamp shielding and controls light distribution. The lens surmounts a lens base to which it is secured by means of unique internal, integrally-molded lugs received in cooperating hook-shaped slots. An 0-ring gasket establishes a water-tight seal. Unlocking of the assembly is deterred by means of a single, tamper-resistant screw. The lens base is mounted on a deep casting, with or without an interposed cast aluminum baseplate.

Abstract: A reflective-refractive lighting jacket has a first reflective and second refractive surface for surrounding a tubular light source in the interior of the jacket. A first reflective section reflects light from the source, and a second refractive section transmits light from the source and from the reflecting section. Both sections are forms in cross section that have a focal point in the interior of the jacket. Flutes in the jacket create various images and projected beams so that many different images and projected lines of the source are formed to provide for distributing light while minimizing actual diffusion.

Abstract: An improved luminaire assembly having an HID lighting source with an upper reflector portion and a lower refractor portion. This luminaire assembly provides downlight control and glare control properties for a concentrated, narrowly spaced downwardly directed illumination. The downward light control below horizontal to uniformly distribute downward directing the light rays below horizontal to angle in the range between 30.degree. to 50.degree. vertical.

Abstract: A vehicle lamp that looks attractive, whether the lamp is on or off, has a transparent cap attached to a reflector having a plurality of reflective surface elements. The transparent cap is attached to the reflector so as to cover the light bulb. A plurality of pillars are provided near the front end portion of the transparent cap for intercepting light emitted from the light bulb. On the front surface of these pillars are formed reflective surfaces. When the lamp is turned off, both the reflective surfaces of the reflector and the pillars glitter. When the lamp is turned on, the spaces between the pillars on the front end portion of the transparent cap shine.

Abstract: A device for enhancing and shielding the light emitted from a rod-shaped light source. The device includes a plate strip made of light-reflecting material or provided with light-reflecting means disposed between the rod-shaped light source and a holder for holding the rod-shaped light source along the longitudinal axis direction thereof. The plate strip has an inwardly curved edge extending from the two ends thereof to the center. The width of the plate strip is gradually tapered from the two ends to the center.

Abstract: A lighting device which can be used for illuminating pedestrian crossings or in other applications where it is necessary to form a defined and uniform rectangular pattern includes a parabolic reflector element and a planar screen with an array of cylindrical microlenses or microprisms on a surface thereof.

Abstract: A motor vehicle indicator light comprises a light source, a reflector defining an axis on which the light source lies, the reflector having striations in a first orientation, and an optical plate having striations in a second orientation substantially at right angles to the first orientation. A central zone of the reflector spreads the light in a first direction in a first angular gap defined on either side of the axis, while the striations in two side zones of the reflector spread the light while directing it towards the axis of the reflector in the first direction. A homologous central zone of the optical plate, which may be an intermediate screen, spreads the light in a second direction substantially at right angles to the first direction, in a second angular gap on either side of the axis, while homologous side zones of the intermediate screen spread the light in the second direction to a lesser extent than the central zone.

Abstract: The present invention comprises a lighting unit having a light source emitting light, a reflector placed behind the light source for reflecting the emitted light, and a lens held in front of the light source. The lens is substantially flat and circular. The lens has a predetermined structure that comprises a light-emitting surface and a light-incident surface opposing the light-emitting surface. The light-incident surface of the lens is formed into a vertically oriented high-frequency waveform. In the first embodiment of the lens, the light-emitting surface is substantially flat and the high-frequency waveform is obtained from a combination of a first primary waveform and the third harmonic of the first primary waveform; that is, the high-frequency waveform is derived from the equation ##EQU1## The first embodiment of the lens spreads the emitted light with a graduated distribution horizontally about 20 degrees as measured from the edge of the lens.

Abstract: A vehicular lamp includes: a light source emitting a light; a lens having a small size in width; a reflector for reflecting the light emitting from the light source toward the lens, wherein the reflector has a large size in width relative to the lens to focus the light emitting from the light source within the lens width, an optical axis between the light source and the reflector is inclined with respect to the lens, and the lens has steps for refracting the light runs along the optical axis.

Abstract: A projection illumination system which includes a source light with a projection axis passing generally centrally through this light, and dual-side light-gathering structure, including a reflector and a TIR lens structure generally embracing the source light on opposite sides thereof and along the projection axis, with this light-gathering structure being capable of directing, ultimately outwardly from the source light and unidirectionally along the projection axis, a major percentage of light generated by the source light.