Abstract: A marker lamp distributes light without the use of mirrors or reflectors. The marker lamp uses a combination of corner cube optics and intersecting cylindrical prisms on the lens, distributing light in accordance to the United States and the United Nations standards for the European community for marker lamps. The marker lamp uses as a light source a reduce number of light emitting diodes, a maximum of three. The marker lamp is design to be slim and sturdy.

Abstract: The focusing cup of a LED package is coated exteriorly with or made of opaque material to reduce the spurious external light interference due to the reflections of the surfaces of focusing cup.

Abstract: An illumination device or a flash device of a camera includes a light source, a first optical unit and a second optical unit. The first optical unit is arranged to direct light from the light source to an object, and has a lens part disposed a middle portion of the first optical unit and having such an optical power that each of both lens surfaces thereof has a positive refractive power to cause diverging light from the light source to exit in a light-collected state, and reflective surfaces disposed on both sides of the lens part and arranged to reflect light from the light source toward the object. The second optical unit is disposed on a side nearer to the object than the first optical unit and having a plurality of lens parts. An illumination angle is varied by varying a relative interval between the first optical unit and the second optical unit.

Abstract: An illumination device comprising a plate provided for guiding light there through, having an input for receiving an input light beam to be injected into said plate and an array of N micro-prisms for receiving the input light beam and producing an output light beam from the input light beam. The array of micro-prisms is located inside the plate.

Abstract: A light pipe, including a transparent housing member characterized by a first refractive index, a light source positioned to shine a light beam through the transparent housing member, and at least one enclosed pocket positioned within the transparent member. The enclosed pocket is characterized by a second refractive index, wherein the first refractive index is substantially greater than the second refractive index. Light shining through the transparent member is totally internally reflected by the enclosed pocket.

Abstract: A device and a method for uniformly illuminating transparent or opaque objects while confining the illumination to those objects. The device consists of a radiation source and a transparent block. The device exploits total internal reflection to ensure that radiation introduced to the block by the radiation source propagates only within the block except where the block is in contact with the object to be illuminated. Where there is contact with the object, some of the radiation enters transparent objects, illuminating them from within or is diffusely reflected from opaque objects.

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

Abstract: A light assembly includes a linear light source has a longitudinal axis and a refractor and/or a reflector. A main refractor extends along the length of the light source and parallel thereto. The main refractor has a rear portion coated with a reflecting material in a desired pattern extending along the length of the main refractor.

Abstract: A lighting luminaire using only one LCD element as a light source comprises a light conducting frame; a unit LCD element disposed at a position near one corner of the light conducting frame, to function as a point light source and a reflector plate provided at the rear surface of the light conducting frame. A specially designed pattern is formed on the rear surface of the light conducting frame according to an area distribution function. Moreover, several ramps are formed along the inner edge of the light conducting frame so as to further improve uniform distribution of output light. In the invention, a forming method of this lighting luminaire is also disclosed.

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: An optical attachment 10 for a light source, in particular for a light-emitting diode 12, exhibits an inner lens area 14 which surrounds an optical axis 13 of the optical attachment 10 for inner light beams 15 emitted from the light source and an outer reflector area 16 for outer light beams 17 of the light source which surrounds the inner lens area 14 in a ring-like manner. Due to this combination of refraction in the inner lens area and reflection in the outer reflector area, the dimensions of the optical attachment can be kept relatively small and, in comparison to a lens or a reflector, more light can be collected and the point-shaped light diode can be imaged on the exiting side as a large area light appearance.

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: An optical element for deflecting light beams is formed form a plate-like core or element 1 of transparent material having tapered microprisms 2 one side, with furrows 7 formed between the microprisms, the furrows being covered with a reflective layer 12, and a foil 11 of transparent material arranged on a side of the reflective layer remote from the core or element 1.

Abstract: A vehicular lamp which radiates a light by indirect illumination using a plurality of LED light sources which has a thin structure while providing sufficient light output to the front of the lamp, even in the case where the lamp is mounted in a wrap-around portion of the vehicle body. Respective Fresnel lenses which form light from respective LED light sources into parallel light fluxes are arranged so as to align the directions of the parallel light fluxes upward, and the parallel light fluxes are then reflected toward the front of the lamp by a reflector. The reflector is separated into sub-reflectors for every area which the parallel light fluxes from the respective Fresnel lenses strike, and the sub-reflectors are arranged in a stepped configuration extending in a lateral direction of the reflector from the front of the lamp toward the rear of the lamp.

Abstract: A flash light has a barrel for batteries, a lamp, a switch for opening and closing a circuit a lens, a cap, and a pistol grip handle extending transversely from the barrel. The handle includes a trigger with a magnetic to activate the switch in the barrel. The barrel is watertight between the barrel, the cap and a transparent face mounted with the cap. A reflective parabolic lens surface has multiple protrusions arranged on the reflective surface.

Abstract: A decorative light assembly for selective attachment to a wide variety of surfaces. The decorative light assembly includes a plurality of base members. Each has a top wall, a back wall, and a pair of side walls that are attached to and extend away from the top wall. A plurality of illumination devices are fixedly coupled to an upper surface of each of the top walls. A plurality of mounting plates selectively couple each of the illumination devices to a ferromagnetic surface. A plurality of attachment plates selectively coupling each of the mounting plates to a non-ferromagnetic surface has a first side and a second side. An attachment means is coupled to each of the second sides of the attachment plates.

Abstract: There are provided a method of evaluating a basic curved surface for a reflecting mirror, an evaluation system for evaluating a basic curved surface for a reflecting mirror, and a computer-readable storage medium on which a program is recorded. There are provided a step (105a) of entering light source information on a light source and design information representative of a basic curved surface, and a step (105e) of displaying closed curved lines on a display device. The closed curved line data represents one or more closed curved lines which are included in one or more planes intersecting an axis Ax as well as in the basic curved surface. The axis Ax is determined to extend in a direction in which light from a light source is to be reflected by a reflecting mirror and to pass through a light source position defined by the light source information. The closed curved line data can be generated by obtaining lines of intersections of the plains and the basic curved surface.

Abstract: A light source comprising a light generating element and a reflector, said reflector comprised of a generally parabolic shaped body including an at least substantially closed end and an open end, the light source disposed generally adjacent said closed end, said reflector including a light reflecting coating on both an internal and an external surface of said body, wherein a portion of said external surface of said body adjacent the closed end of the reflector is substantially devoid of said coating.

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: 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: Optical transformer devices described herein provide a variety of area output patterns from a small light source (21). A light ejector (24) is described for transversely ejecting light injected by a light source, including a plurality of partially reflective interfaces (41) arranged along a central axis (28), the interfaces arranged so that light injected by the light source travels through each of the interfaces, the reflected light providing an area light output of the light reflected. The interfaces may utilize Fresnel reflectance or may comprise metallic or dielectric coatings. A variety of embodiments are described, such as a cylindrical configuration, a rectangular block configuration, or an N-sided polygonal configuration. In some embodiments a turning reflector (132) and polarization retarder (131) are provided to reverse the direction of light and rotate polarization on the side opposite the light source. In one embodiment, a stripe ejector (470) can be used to illuminate an LCD display.

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 1.25-2.

Abstract: A cavity diffuses light received from a light source so as to produce a uniform light output. The cavity is formed from a unitary structure having one or more portions that diffusely reflect light within the cavity and another portion that transmits the uniform light output. The cavity is a unitary structure, formed from an optically diffusive material, that defines a diffusing cavity having an access aperture. A portion of the unitary structure defines diffusely reflective walls and another portion of the unitary structure defines a diffusely transmitting screen. A portion of the diffusely reflecting walls has a portion that has a thickness being greater than a thickness of the diffusely transmitting screen. The diffusely reflective walls reflect and mix light within the diffusing cavity. The diffusing cavity may be employed in an illuminated display device, having a light source and an imaging device which imposes an image on light received from the cavity.

Abstract: A lightguide includes an input edge surface, a back surface and an output surface. A reflector is directly secured to the back surface by, for example, adhesive bonding.

Abstract: A method for replacing non-HID landing and taxi lights in an aircraft wing housing that originally was designed to contain the non-HID landing and taxi lights in side-by-side relationship, is accomplished by installing an HID landing light, an HID taxi light and a power control device in the space originally designed to accommodate the non-HID landing and taxi lights. A single ballast provides power to both lamps which each comprise a housing, an HID bulb supported within the housing, a lens for passage of light from the HID bulb out of the housing, a primary reflector surface disposed behind the HID bulb, and a secondary reflector surface disposed in front of the bulb for reflecting light from the bulb back through the bulb for further forward reflection from the primary reflector surface through the lens. The lens may have a lenticular array including a plurality of cylindrical surface elements for spreading the light beam emitted by the lamp.

Abstract: A vehicle puddle light assembly is provided in an opening formed in a body panel of a vehicle. A socket including a housing and at least one contact coupled to the housing is disposed within the opening and coupled to the body panel adjacent the opening. A lamp is coupled to the contact within the housing. A lens is coupled to the socket outboard of the lamp. The lens has an opaque upper portion and a transmissive lower portion having a plurality of facets formed therein for projecting light from the assembly and a predominantly downward and outboard direction. The housing includes a reflective upper portion for directing radiation from the lamp toward the transmissive portion of the lens and a reflective lower portion for directing radiation from the lamp toward a reflective surface of the lens formed inboard of the opaque upper portion. The radiation is then redirected toward the reflective upper portion of the housing and then toward the transmissive portion of the lens.

Abstract: A combined lens includes a first luminescence surface, a second luminescence surface, a first concave surface for reducing surface reflection of light from the light source and for conducting the light to the first luminescence surface, and a second concave surface 26 for reducing surface reflection of the light from the light source and for conducting the light to the second luminescence surface. This allows the same status display to be provided in a plurality of directions by one light source.

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: A light source arrangement is used for providing illumination to an essentially planar area (405) in an electronic device. The arrangement comprises an encapsulated semiconductor light source (402) in the vicinity of an edge of an essentially planar light guide (404). Light emitted by the encapsulated semiconductor light source is to be coupled into the light guide through the edge. The encapsulated semiconductor light source comprises a semiconductor chip (301) encapsulated in an encapsulation block (302) that comprises a curved surface facing the edge of the planar light guide. The encapsulation block (302) has also a D-shaped cross section in a plane perpendicular to the plane of the essentially planar lightguide so that the arcuate part of the D corresponds to said curved surface. The encapsulation block extends to a predetermined distance in an extension direction locally perpendicular to the plane of said D-shaped cross section.

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: There is provided a spread illuminating apparatus in which a bar-like light source radiates light more uniformly. Light scattering portions are formed to be inclined in a longitudinal direction of a light conductive member such that irradiation ranges of adjacent light scattering portions overlap partially with each other in the longitudinal direction of the light conductive member. Light ranges (La1 La2, La3, La4 and La5) in a longitudinal direction of the light conductive member per beam of light reflected at the light scattering portions and entering a transparent substrate are expanded so as to overlap partially with each other. Accordingly, the light conductive member includes no part that the light reflected at an optical path conversion means of the light conductive member does not cover in the longitudinal direction of the light conductive member. Thus, the light conductive member constitutes a light source that spreads uninterrupted linear light even on a microscopic level.

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 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 light assembly includes a radial beam projector for being positioned in the vicinity of a ceiling of a room and spaced from at least some of the walls thereof. There may be at least two reflectors or refractors on or adjacent to the walls or ceiling of the room, each for receiving a separate light beam from the projector in at least two spaced locations and reflecting or refracting light into desired patterns to provide light for such room. The radial beam projector may project at least two light beams, one toward each reflector or refractor. There is also a light assembly which includes a circular reflector or refractor element on or adjacent to the walls or ceiling of such room for receiving a radial light beam from the projector and reflecting or refracting light into desired patterns to provide light for such room.

Abstract: A light pipe includes a plate-like member having light output means formed in its upper surface so that light incident on an incidence side surface of the plate-like member is exited from the lower surface of the plate-like member through the light output means, an adhesive layer having a refractive index lower than that of the plate-like member, and (i) an anti-reflection layer made of a circularly polarizer and bonded to a lower surface of the plate-like member through the adhesive layer or (ii) a light-diffusing layer having a surface of fine prismatic structures and bonded to a lower surface of the plate-like member through the adhesive layer. A plane light source unit includes at least one light source disposed on one side surface of the light pipe. A reflection type liquid-crystal display device includes the plane light source unit and a liquid-crystal cell including a reflection layer disposed on the light output side of the plane light source unit.

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: The present invention is directed to an LED lamp and method of using one or more lamps, and portable lighting products such as flashlights using such LED lamp(s). The LED lamp according to the invention provides uniformly distributed light that radiates spherically approximately 270° in all directions, both radially and axially. This newly designed lamp is ideally suited as a source of illumination for beam lights of the type employing reflective surfaces to produce a beam of light. The at least one chip is encased in at least one envelope surrounding the chip, with the envelope extending from a first position below the position of the at least one chip to a second position above the chip position. The second position of the envelope forms a lens in from of the at least one chip with the surface of the lens being configured and positioned relative to the ship such that a substantially uniform portion of light emitted from the chip is reflected off of the surface.

Abstract: A light collector for directing light to a concentrated area on a target surface such as for use with a linear LED array used as an erase lamp in an electrophotographic printer. The collector includes a compound cylinder lens supported by a pair of reflecting members. The reflecting members reflect light rays from the LED array to the cylinder lens. The cylinder lens includes a lower surface for capturing the reflected light rays and a tongue extending from the lower surface for capturing light rays directly from the LED array. The cylinder lens directs and concentrates the captured light rays in a narrow line on a target surface. A plurality of cross-ribs extend between the first and second reflecting members to specularly reflect light beams from the LED array.

Abstract: To provide a back light unit, a liquid display, and a method for manufacturing a light guide plate, in which the occurrence of bright lines can be diminished. An incoming surface 11a of a transparent light guide plate 11 is machined into a smooth surface S to correct a manufacturing tolerance during injection molding in order to form an edge portion E into a designed shape. To effectively reduce occurrence of bright lines, the edge portion E preferably has a curvature of radius or a chamfer dimension of 140 [&mgr;m] or smaller. The transparent light guide plate 11, a diffusion sheet 5, and a prism sheet 12 configure a back light unit 10 for a liquid crystal display.

Abstract: A light system composed of a plurality of lights with each light having different light emission properties. The component parts of each of the lights, such as optically effective components that influence the beam path of the light emitted by the lamp, and end cap reflectors are of a standard dimension so that lights of different configurations can use the same elements to reduce the number of different parts required for the group of different lights of the system.

Abstract: An illumination device or a flash device of a camera includes a light source, a first optical unit and a second optical unit. The first optical unit is arranged to direct light from the light source to an object, and has a lens part disposed a middle portion of the first optical unit and having such an optical power that each of both lens surfaces thereof has a positive refractive power to cause diverging light from the light source to exit in a light-collected state, and reflective surfaces disposed on both sides of the lens part and arranged to reflect light from the light source toward the object. The second optical unit is disposed on a side nearer to the object than the first optical unit and having a plurality of lens parts. An illumination angle is varied by varying a relative interval between the first optical unit and the second optical unit.

Abstract: A faceted surface has first and second facets which deflect respective first and second light beams to produce first sub-beams which alternate with second sub-beams. The faceted surface may be a reflector having first facets at 120° to second facets for mixing light beams which are incident at 120° to each other. 100% of reflected sub-beams from each source alternate with 100% of sub-beams from the other source. The faceted surface may also be a refractor which is part of a transparent block having two parallel faceted surfaces. A first refractive surface refracts parallel light beams to produce diverging beams which are each split into spaced apart sub-beams by the second refractive surface. 50% of refracted sub-beams originating from each source alternate with 50% of refracted sub-beams of each adjacent source.

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: Optical element (9) for deflecting light beams, which enter and re-emerge from the latter, in such a way that their angle of emergence is limited, for use as a luminaire-cover for example, having a plate-like core (1) of transparent material which on one side is occupied by microprisms (2) that taper forming furrows (7), with, for example, all of the top surfaces (4) of the microprisms forming the light-entry face and the other side of the core (1) forming the light-emergence face (3), and with the furrows (7) being covered by a layer (12) that is reflective at least on one side, with, furthermore, a foil (11) of transparent material being provided on the side of the reflective layer (12) that is remote from the element core (1), and also methods for producing the optical element (9) and the reflective element (10) that has the reflective layer (12).

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: A portable lighting device according to the present invention includes a battery housing, a light source supported at a first end of the battery housing, and a shroud extending outward from the first end of the battery housing circumferentially around the light source. The shroud is preferably formed of a translucent material having a partially reflective inner surface for reflecting a portion of incident light emitted from the light source in a forward direction while allowing a portion of the incident light to be transmitted through the shroud and dispersed in peripheral directions. The shroud further preferably includes a diffusing outer surface for diffusing the incident light that is transmitted through the shroud. A shroud is preferably integrally formed with a collar portion as used for threading the integrated head structure onto the battery housing. Additionally, a protective lens cover that may include a collimating lens is also integrally formed in this head structure.

Abstract: An elongated transparent light leading member is provided above a light source, leading member is provided opposite to the light source and a hole is formed in the light leading member at a position above the light source. The hole has an inverted triangular shape, opposite sides of the hole are provided for reflecting light beams emitted from the light source in a longitudinal direction of the light leading member.

Abstract: The customized clear, free from impediment, obstruction, or hindrance, or the translucent or transparent transmission of light is permitted to shine through an injected or poured pliable plastic which could be PVC, formulated to emit the maximum even dispersion of LED (light emitting diodes), illumination. The single or multiple LEDs are fitted into a cavity usually in the back of the plastic unit in order for the emission of light to pass through the unit. This light emitting unit is usually molded for application onto wearable apparel, accessories or decorative items and can be molded into varying shapes, colors, designs or logos with impressions within or on the surface in flat, two dimensional or three dimensional properties for illumination and exploitation of said unit.

Abstract: A separation optics structure comprising a transparent unitary body portion extending between a first wide end and a second distal end defines a wedge-shaped structure. The body portion includes a front portion defining a generally planar front illumination surface, a back portion having a plurality of beveled redirecting facets spaced apart by intermediate areas, and a plurality of optics elements disposed within the intermediate areas. A first light source is coupled at the wide end to transmitted light longitudinally through the body portion toward the redirecting facets. The redirecting facets having reflective surfaces transverse to the planar front illumination surface to reflect and scatter the light toward the front surface in a relatively low intensity light distribution. A second light source is coupled adjacent the back portion behind the intermediate areas.