Abstract: A lens jacket for surrounding all or part of the circumference of an elongated light source which includes first and second, successive light modulating means, e.g. negative focal length lens means formed therein and second lens means for producing virtual images of the source altered in shape or dispersion and direction.

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.

Abstract: Illumination system with a light source and a surrounding cylindrical array of refracting elements producing spokes.

Abstract: The present invention provides for a lamp assembly which can be utilized in overhead signaling or lighting applications such as in traffic signal lamps or illuminated overhead road signs. The assembly includes a lens that optimizes and redirects light in a desirable direction in order to meet certain regulations. The lens of the present invention is designed to power portions of light emitted from an LED while allowing other portions to pass through the lens unaided. The lens of the present invention works in combination with specific LEDs to efficiently redirect light emitted from the LEDs. The assembly includes a circuit board including a plurality of rows of LEDs and the lens, which has an exterior surface and an interior surface. The interior surface of the lens comprises a plurality of rows of horizontal bands with a single band being associated with a row of the LEDs.

Abstract: A reduced package depth low profile lighting system has a light source emitting light at a solid lens for shaping the light to conform to governmental lighting standards. The solid lens has a first surface comprised of a plurality of conic section cylinders. Each of the cylinders has a length first focal line, a second focal line and a cylinder line. The first focal line is tangent to a package curve preferably defined by a circle preferably in the horizontal plane of the vehicle. The circle has a center and a predetermined radius length. The center is coincidence with the light source. Each of conic cylinders substantially collimates light in the vertical plane while spreading light in the horizontal plane within a predetermined angle from the optical axis.

Abstract: The lighting system for an automotive vehicle has uses smooth conic section solids to form a beam pattern. In one aspect of the invention the A/C ratio of the conic section solids are varied to collimate the light emitted in the vertical direction and spread light in the horizontal direction. In another aspect of the invention the A/C ratio of a hyperbolic conic section may remain the same while adding fluting to the outer surface of the lens to provide beam redirection.

Abstract: A receptacle structure for a fluorescent lamp, wherein a light refracting plate is arched upwardly and is provided beneath two wing plates of an elongated base of the receptacle structure, the inner bottom face of the refracting plate is in an undulated form and is arched in a contrary direction to that of an arched and undulated lamp shade, thus an elliptical hermetic space is provided for hidding a lamp pipe (which is secured by two end fixing-seats provided on the two ends of the elongated base) between the lamp shade (which is engaged by two end fixing-caps for preventing it from dropping) and the refracting plate, thereby light projecting through the refracting plate and the lamp shade can be more uniform, the lamp pipe will no more be exposed to be covered with dust, appearance of the whole lamp can be more beautiful.

Abstract: A vehicular lamp including a front lens formed by resin molding having a projecting part a thickness of which is larger than that of the other parts of the lens. A clearance lamp is integrally molded with a front lens including a side turn signal lens part projecting toward a front surface of the front lens. The side turn signal lens part projects like a tricornered roof inside which a light bulb for the side turn signal lamp is disposed closely adjacent to the lens. The thickness of the side turn signal lens part is made thicker than the other parts of the front lens.

Abstract: A rear lighting system includes an elongated light source emitting light and a solid lens having an inner surface comprised of a hyperbolic cylinder, said hyperbolic cylinder having a first focal line and a second focal line and a cylinder length. The first focal line is coincident with the light source and the outer surface is comprised of a generally planar shape perpendicular to the horizontal plane and the vertical plane.

Abstract: A lenticular lens containing a multiplicity of multi-sided lenticules useful with reflector lamps provides improved light distribution by having the lenticules oriented to avoid parallelism with a projected light image and distributed in a plurality of zones or bands concentric about said optical center. The size and light-spreading ability of the lenticules in each zone is selected to provide the desired light distribution. Parallelism is avoided by having the lenticules arrayed in a plurality of wedge-shaped sections circumferentially arranged in a circle around the optical center of the lens and extending through the zones with the lenticules in each section arrayed in a uniform, close-packed hexagonal array of parallel rows with the longitudinal axis of one of the rows being radially aligned with respect to the optical center of the lens, so that none of the sides of the lenticules are parallel to the light source image projected off the reflector.

Abstract: Lens apparatus includes a TIR lens having multiple facets, the lens having a central axis about which the facets extend in non-circular relation. The lens may have a non-circular perimeter about that axis, and that perimeter may be rectangular or square.

Abstract: A lamp for vehicles including a lamp body having a front opening, a reflector disposed at an inner-rear surface of the lamp body, a light source mounted at the central part of the lamp body for emitting a light beam, and an outer lens covering the front opening of the lamp body. The outer lens includes fisheye steps and cylindrical steps, and the fisheye steps and the cylindrical steps are alternatingly arrayed.

Abstract: An improved lighting fixture for projecting a high-intensity beam of light that is imaged at a distant location, with reduced manufacturing cost and with reduced weight, but greater efficiency. Various structures are disclosed for eliminating infrared light from the projected beam, whereby the fixture's lens can advantageously be formed of a suitable plastic material and be configured as an aspheric fresnel lens or a stepped aspheric lens.

Abstract: A lamp cover in particular for fluorescent lamps consists of a light-transmitting material which at least on one surface features a structure which affects the rays of light that penetrate the material. The present lamp cover is to achieve a soft-focus effect, i.e. light-impervious elements located in the ray path should not be recognizable from the outside. In addition, the lamp cover should have a light-directing effect whereby in the polar diagram in terms of inensity the direction of the light beam hitting the structure in essence has the same direction as the light beam exiting the structure whereby the exiting light beam features a ray expansion.

Abstract: A method of producing a die for use in forming fisheye steps in an automobile lens having both straight and curved portions. The plurality of fisheye steps formed on the curved portion of the lens are divided into generally parallelogram-like sections. The die comprises plural concave portions that are arranged to form the fisheye steps when applied in a lens forming process. In the die producing method, the boundary lines between concave portions corresponding to the respective fisheye steps are connected to produce approximately a straight line, to thereby improve an appearance of the fisheye steps. Further, the concave portions that are divided by longitudinal lines extending in a first direction and lateral lines obliquely intersecting the longitudinal lines and extending in a second direction are produced by NC machining using an end mill.

Abstract: The vehicle lamp includes a reflector; a light source; and a lens plate having an inner surface facing the reflector and provided with optical elements for deflecting light beams reflected from the reflector. Each of the optical elements is constructed so that the light beams passing therethrough are deflected in each case in a horizontal direction and/or a vertical direction so as to produce a prescribed light distribution identical for all optical elements. Each of the optical elements is subdivided into a number of subprisms having flat surfaces extending tangentially to an envelope of an inner surface of theoptical element. Each of the subprisms is assigned to a region of the light distribution and has a surface determined by an amount of light assigned to the region of the light distribution.

Abstract: A fluorescent lamp cover molded as a unitary hollow structure made of light-transparent synthetic acrylic resin having an opening for receiving the fluorescent lamp in the interior of the cover. A prismatic diffuser plate of the lamp cover has an interior flat major side surface and on an opposite side surface of the plate an exterior major side surface having a pattern of adjacent pyramidal projections having flat sides through which the illumination light energy from the fluorescent lamp incident on the interior flat major side surface passes outwardly of the cover. The pyramidal projections are of two types and each have an apex which defines the outermost exterior point of the corresponding pyramidal projection.

Abstract: The headlight has a light ray guiding disk which is domed towards the source of light. This light ray guiding disk is structured as integral formed article and includes at its central zone, which has the smallest distance from the source of light, a collective lens structure. By means of this a substantial portion of the light rays emitted from the source of light into a spatial angle in front of the source can be focussed in the direction of the axis of the headlight. The light ray guiding disk can be manufactured as simple formed article. A transparent ring in a signal color is foreseen outside the light ray guiding disk. By means of this disk the stray light is utilized for a lateral marking when the headlight is used e.g. in a bicycle lighting arrangement.

Abstract: A solar power-operated, construction work warning lamp which is consisted of a base secured inside a lamp guard and covered by a top cover and a bottom cover to hold a solar cell assembly and a light emitting assembly, wherein a light intensifier is fastened to the base on the top and secured in place by a framed seat and an enclosing wall, to intensify the intensity of light given by the solar cell assembly. The light intensifier is consisted of two symmetrical condenser lens assemblies connected into a cylindrical shape covered around the light emitting assembly to hold a plurality of condenser lens for intensifying the intensity of light given by the light emitting elements on the light emitting assembly.

Abstract: The invention relates to a motor vehicle headlight glass suitable for being mounted in a position where it slopes relative to a vertical plane, and being of the type that comprises a plurality of stripes for the purpose of spreading the light emitted by the headlight substantially in a lateral direction. Each stripe in at least one given group of stripes has a stripe surface which is ruled and without slope discontinuity, having tangency planes which define a set of unit prisms whose prism angles and whose slopes relative to the vertical vary together in such a manner that an incident ray on any one of the prisms is deflected laterally by the prism by an amount that varies depending on the prism, but without being subjected to vertical deflection. The invention also provides a method of making a mold die for mass producing the glass, and a method of manufacturing the glass by molding.

Abstract: A lighting lens having a multiplicity of lenticules is disclosed, and in particular the use of aspherical lenticules is disclosed. The lenticules are of two or more standard types, each type being defined be a different cross sectional curvature. The different lenticle types are distributed across one side of the lens in an intermixed pattern. By selecting two standard lenticule types, and determining a weighted ratio, a lens for a desired lighting pattern may be made without having to specifically design the individual lenticules, or the particular lenticle arrangement.

Abstract: A light fixture includes a parabolic reflector, a light source positioned at the focal point of the parabolic reflector and a lens assembly. The lens assembly includes a front lens for transmitting the primary beam reflected from the parabolic reflector. The lens assembly also includes a first lens section including one, two or more lateral focussing elements positioned between the front lens and the edge of the parabolic reflector to intercept omnidirectionally radiated light rays from the light source and to redirect the intercepted light rays into collimated lateral beams to illuminate selected areas at the side of the light fixture.

Abstract: A lighting device such as a rear-spoiler stop lamp in which the percentage of utilization of the available light and the illuminating effect produced by the lamp are enhanced despite the convexity of the face lens of the lamp, and the entire face lens is uniformly irradiated with the light. The device includes a device body composed of a base and a face lens and includes a large number ofjuxtaposed light-emitting diodes. The face lens is convexly curved at a prescribed curvature. The inside surface of the face lens is formed with light control portions corresponding to respective ones of the light-emitting diodes arranged in such a manner that the rays of light emitted from the diodes are directed in prescribed directions by the light control portions.

Abstract: This headlamp for a motor vehicle comprises a lens that has a front surface that slopes backwardly from bottom to top of the lens. In localized regions of the lens, there are spread flutes, each comprising alternating ridges and grooves on the back surface of the lens. The individual ridges extend in a direction between the top and bottom of the lens and are characterized by having the form of a segment of an inverted, base-up cone. The individual grooves extend in a direction between the top and bottom of the lens and are characterized by having the form of a segment of an upright, base-down cone. The coniform configuration of the individual ridges and grooves serves to lift the edges of the light beam passing therethrough and thereby compensate for the tendency of the beam to droop at its edges as a result of the backward slope of the front surface of the lens.

Abstract: A light fixture includes a parabolic reflector, a light source positioned at the focal point of the parabolic reflector and a lens assembly. The lens assembly includes a front lens for transmitting the primary beam reflected from the parabolic reflector. The lens assembly also includes a first lens section including one, two or more lateral focussing elements positioned between the front lens and the edge of the parabolic reflector to intercept omnidirectionally radiated light rays from the light source and to redirect the intercepted light rays into collimated lateral beams to illuminate selected areas at the side of the light fixture.

Abstract: A low beam headlamp for motor vehicles includes an objective made of pressed glass whose one side is formed as aspheric partial surfaces of identical or different aspherity. The partial surfaces are staggered in the direction parallel to the optical axis of the objective and the resulting step has rounded edges. The aspheric partial surfaces adjust light distribution to achieve a desired quality of the light-dark boundary zone projected on the driveway, and provide corrected color fringes of the passing light beam.

Abstract: Lighting fixture including an enclosure, means disposed in the enclosure for supplying a central source of light therein, a concave, generally parabolic reflector for directing a main beam of light out of the enclosure from the source generally along a given optical axis, the central source of light being located at the focal region of the concave reflector, the concave reflector having a light penetrable region thereof disposed at least at one side of the optical axis in a horizontal plane in common with the central light source, the light-penetrable region forming an escape window out of the enclosure for part of the light from the source.

Abstract: A luminaire includes a lenticular lens. Each lentical comprises a convex lens having a highly polished aspheric curved surface. The aspheric surface is divided into a plurality of coaxial zones, each designed to accept a specific quantity of parallel light flux from a parabolic reflector positioned within the luminaire and then refract that quantity of flux into a specific solid angle of the projected beam. The convergence of light rays by each lens element produces a real image of the light source in front of the lenticular lens. Each lentical produces a separate image and all images were substantially identical.

Abstract: A flood lamp having a lens with a series of concentrically disposed fluted rings on the internal lens surface in combination with an outer concentric ring adjacent to and wider than any one of the fluted rings and containing a plurality of semi-spherical protrusions disposed in an established pattern (e.g., circular or hexagonal). The flood lamp reflector has multiple reflective surfaces including a front section that is parabolic shape having a principle focal point, a spherical section having its center of radius coincident with the principle focal point of the parabolic front section, and a spherical rear section.

Abstract: A spot lamp having a lens with a series of concentrically disposed fluted rings on the internal lens surface in combination with an outer concentric ring adjacent to and wider than any one of the fluted rings and having a stippled surface. The spot lamp reflector has multiple reflective surfaces including a front section that is parabolic shape having a principle focal point, a spherical section having its center of radius coincident with the principle focal point of the parabolic front section, and a spherical rear section.

Abstract: An artificial light source arrangement includes a tubular light source whose horizontal light distribution curve takes on a substantial circle, a plurality of elongated linear lenses arranged parallel with the light source, and a plurality of photoconductors, each having its light-receiving end disposed along the focus position of each lens. Lenses may be arranged in coaxial relation to the light source, and the photoconductors may then have their light-receiving ends formed at the focus position of the lenses.

Abstract: A single lighting fixture for mounting in front of a large billboard having a horizontal length approximately two times as long as its vertical length is disclosed. The lighting fixture comprises a lamp housing having a lamp positioned therein with the lamp being approximately horizontally positioned in the housing. A new and novel reflector is positioned on one side of the lamp is designed to reflect the light radiating from the lamp in such a manner that the bottom surface of the reflector is utilized to light up the approximate central portion of the billboard while the sides of the reflector are used to light triangular shaped side corners of the billboard. A refractor is positioned on the lamp housing to totally enclose the lamp with the refractor comprising in part three phase light control prism elements for stray light control.

Abstract: A luminaire adapted to be mounted at the top of a post and to direct light below a horizontal plane is disclosed. A housing element preferably of a polycarbonate material comprises a housing for an electrical system and a refractor means having an interior and exterior prismatic structure.

Abstract: A luminaire particularly suited for outdoor applications (e.g., for illuminating roadways and alleyways) and including a two-part housing wherein one of the parts (the base) is metallic and the other (refracting portion) is of lightweight (plastic) material and includes both an opaque chamber for housing the luminaire's lightweight rectangular aluminum reflector and a refracting, multiplanar prismatic lens. The reflector is slidably positioned in the chamber portion and thus readily removable when both parts of the housing are separated. The luminaire is capable of providing a predetermined scheme of light distributions (including IES types II, III, and IV) on the ground therebelow when oriented in either a horizontal or vertical position.

Abstract: A long, linear indirect lighting fixture of a relatively small cross-sectional dimension which is mounted above eye level is comprised of lamps secured within an elongated housing, and a reflector and side lenses which direct and refract the greatest portion of luminous flux from the lamps above the horizontal plane of the fixture, yet a small portion of the luminous flux below but near the horizontal plane. The portion of light directed below but near the horizontal plane, which is controlled by, among other things, the relative placement of the lens and lamps, is great enough for an individual to have a perception of seeing a light source but small enough to avoid discomfort produced by glare.

Abstract: This invention relates to a headlamp inter alia for motor vehicles.The headlamp comprises a lens (1) formed by a number of juxtaposed dioptric elements (4) each having a focal point (F) and an axis (5); a light source (6-10) is provided for each element (4) vary near the focal point thereof; the axes (5) of the various dioptric elements (4) are so arranged that the elementary light beams issuing from the elements (4) when the corresponding sources (6-10) are illuminated form a single beam having a predetermined light distribution.Of use for the construction of very shallow headlamps suitable for integration in the bodywork.

Abstract: A lens element for a vehicle lamp, e.g. a direction indicator lamp, consists of a molded transparent plastic body provided with parallel rows of projections each of which has the form of part of a body of revolution of a cylindrical mid-region and end regions which each have the form of part of the body of revolution of the mid-region.In order to produce the required light output in the direction of the longitudinal axis of the vehicle in the case where the lens element is used in a lamp assembly having a relatively inefficient reflector, the lens element is provided with a plurality of ribs which extend parallel to the rows of projections and which are longer than the projections. The ribs preferably alternate with the rows of projections and may extend for the whole or only part of the length of the lens element.

Abstract: A single pair of headlamps that each contain a single on-focus light source and produce different but complementary beam patterns are mounted on a motor vehicle to provide a composite beam of intense non-glare light that is used for city, rural and turnpike driving and thus remains "fixed" and constant for all driving conditions. The use of a single light source in each headlamp improves the optical efficiency of the lighting system and provides both long range and short range illumination of the roadway with a minimum amount of energy and drain on the electrical system of the vehicle. The headlamps are not interchangeable and must be mounted in proper relationship on the vehicle to provide the single-mode illumination.

Abstract: This invention relates to a motor vehicle headlamp lens.It is characterized in that at least one zone of ribs is formed by ribs of variable cross-section, so that the optical deflection effect varies from one point of the rib to another.Improvement of the characteristics of the beam passing therethrough.

Abstract: A motor vehicle headlamp lens has two zones A1 and B containing ribs of different width to produce different amounts of lateral spreading of the headlamp beam. Between these zones a transition zone A2 is provided where a gradual change in the width of the ribs occurs. In the transition zone there are provided novel separating surfaces between the ribs having one surface at an angle to the general plane of the lens which act as a prism to deflect light passing therethrough in a downward direction. In zones A1 and B, and in transition zone A2 the total thickness e of the lens at the crest of any rib is constant.

Abstract: A device for adjusting the angular disposition of a first object with respect to a plane. The first object is adjustably attached to a second object resting on said plane. The adjustment occurs when there is a change in the angular disposition between the second object and the plane. Two freely rotatable members are attached to the first object adjacent each other. Both members are rotatable in a direction parallel to the angle to be adjusted between the first object and the plane, and each member has a rotary rest position determined by its respective center of gravity. During the change in the angular disposition between the second object and the plane, one of the two members is rotationally fixed with respect to the second object and is rotated from its rest position according to the change in the angular disposition between the second object and the plane. The other of the two members remains in its rest position during the change in the angular disposition between the second member and the plane.

Abstract: A method of altering the photometric output and distribution of a light beam produced by a lamp having a fluted sealed beam lamp lens cover, the light beam having a certain beam shape which, in the absence of the present invention, does not conform to the photometric specifications for auxiliary low beam automobile head lamps; the latter specifications require the lamps to have specific maximum and minimum candela(s) output at various photometric points within the beam pattern.Specific areas of certain flutes molded into the lens cover of a non-conforming sealed beam lamp are partially or totally covered with an opaque material or obstructed by a shield to restrict the candela output of unwanted light at various photometric points within the beam pattern, and thus permit the total beam pattern of the treated lamp to meet state and Federal photometric specifications for auxiliary low beam automobile headlamps.

Abstract: A back-up lens for a stop, tail and signal lamp comprising a body of clear plastic material having an inner surface with dioptrics and catadioptrics thereon and an outer surface with cylindrical surfaces thereon.

Abstract: A lamp assembly, such as an indicator type, has a main body detachably securable to an associated support, as, for example, an instrument panel of a related vehicle, with such body enabling the easy connection thereto of an associated bulb socket structure as well as a related lens; such body further enabling the removal and replacement of the bulb from either end of the body.