Abstract: A lens with lenticules arranged in a spiral pattern is described. In polar coordinates the centers of successive lenticules are radially and angularly spaced by spacing factors including Phi, the conjugate of the Golden Ratio. The resulting spiraling lenticule pattern is free of internal harmonics that lead to striation patterns in the lens refracted light. At the same time the size of the beam spot can be set by reflector size and lenticule profile.

Abstract: Electric lamp with a base at one end, having an inner vessel surrounded by an outer jacket, a base with electric connections supporting the inner vessel and the outer jacket, having the following features: a) the base has a base insulator with a central opening with a surrounding collar in which the inner vessel is held without cement; b) the base insulator has a circular, radially projecting segment with an associated upper and lower plateau with reference to the base; c) the outer jacket has a circular opening on the base side with a radially projecting edge that has an upper and lower contact surface with reference to the base, the lower contact surface of the edge being compatible with the upper plateau of the circular, radially projecting segment at the base insulator; and d) the outer jacket is fastened on the base by a cementless mechanical holding mechanism.

Abstract: A protective device for a lamp, especially a high-pressure xenon discharge lamp or high-pressure mercury vapor discharge lamp, includes a pressurized lamp vessel and a protective envelope which surrounds the lamps in at least some sections, can be fixed to the lamp by two closures that engage around lamp shafts, and is made of a gas-permeable fleece.

Abstract: A light source includes a lamp and housing. The housing has a right-angle form with a first leg for the lamp, a second leg for connecting leads for the lamp and a jointure between the legs having an aperture allowing access to the connecting leads and lead-ins. The aperture has a bottom containing openings for the lamp leads-in and a contiguous sidewall containing openings for the connecting leads. The lead-ins and connecting leads are attached in the aperture to form lugs. A cover for closing the aperture has an area matching the area of the aperture and has outer and inner surfaces. The inner surface has a central boss and depending flanges that, when fitted into the aperture after a sealant has been dispensed therein, the boss extends between the lugs and the flanges extend outside the lugs, serving to displace the sealant and force it to surround the lugs.

Abstract: A high intensity discharge lamp (10) has an envelope (12) having a base end (12a), a middle portion (12b) and domed end (12c) arrayed along an envelope longitudinal axis (14). Two spaced apart electrical lead-ins (34, 36) are sealed in the base end (12a) and extend into the envelope (12). A substantially U-shaped frame (38) is within the envelope (12) and the U-shaped frame comprises glass tubing 26a. A light source (16) has an arc discharge capsule (16b) positioned within the frame (38) and a containment vessel (18) is spaced from and surrounds the arc discharge capsule 16b. The containment vessel (18) comprises a transparent structure (19) attached to the frame (38) and formed to provide multiple, independent, localized fractures capable of absorbing the given kinetic energy possessed by the shards.

Abstract: A vehicle light assembly may be made from a lamp having a plurality of LED light sources arrayed circumferentially around the lamp; a reflector body having a reflector axis generally directed to a field to be illuminated. A plurality of reflective surfaces is formed on the front side, the respective reflective surfaces separated by one or more axially extending walls. A through passage is formed in the reflector body, sized and shaped to receive a portion of the lamp, and intersecting a planar extension of at least one of the axially extending walls separating a first reflective surface from a second reflective surface. The planar extension intersects the lamp between a first LED and a second LED whereby light form the first LED substantially shines toward the first reflective surface and the light from the second LED shines toward the second reflective surface.

Abstract: The incandescent lamp, which uses a carbon cycle process, is equipped with a luminous body which, together with a fill, is introduced in a vacuum-tight manner into a bulb, the luminous body including a metal carbide, the melting point of which is above that of tungsten. The distance between the luminous body and the wall of the bulb is less than 18 mm, with a first cycle process, which is attributed to the carbon, being effected by the use of carbon and hydrogen as fill additive, and a second cycle process, which is attributed to the metal, being effected by the use of halogen.

Abstract: Disclosed is a halogen incandescent lamp having a lamp vessel, which is sealed at one end and in which at least one luminous element is accommodated, a vessel section 42 being in the form of a side reflector which extends only over a subregion of the lamp vessel circumference. A light-exit window 40 adjoins this vessel section 42 in the circumferential direction. According to the invention, the light-exit window 40 is comparatively slightly curved in cross section, the vessel section 42 forming the side reflector bulging out away from the light-exit window 40. This bulged-out region is preferably provided with a kidney-shaped constriction 46.

Abstract: A high-pressure discharge lamp, in particular a mercury-free high-pressure discharge lamp for a vehicle headlight, has a lamp base (1) and an axially symmetrical discharge vessel (30), in whose discharge space (300) an ionizable filling, containing metal halides, and electrodes (31, 32) are arranged for producing a gas discharge. The discharge vessel (30) is provided with transparent, partial frosting (37), which is limited to a section of the inside or outside of the discharge vessel (30) extending over part of the discharge vessel circumference, this section having a well-defined position with respect to the lamp base (1). Moreover, a simple production method is proposed for partial frosting (37) which is preferably arranged on the inside of the discharge vessel (30).

Abstract: A minimal volume boss may be formed as key and keyway assembly defining a shaft along the interface between the two pieces. A threaded fastener may be threaded into the shaft to lock the two pieces together. Because the key can have minimal volume, the cavitation spot opposite the key, typically formed during molding can be eliminated on fine surfaces. By properly keying the pieces, rotation between parts can also be eliminated. This helps automated torque sensing tools read and apply the proper torque in automated assembly.

Abstract: A lamp (10) comprising an hermetically sealed, cylindrical envelope (12) arrayed about a longitudinal axis (13); two filament supports (14, 16) sealed in the envelop; a filament (18) fixed between the filaments supports; and an internal reflector (20) in the envelope for directing light emitted from the filament outwardly from the envelope.

Abstract: The bulb (1) of the lamp which defines a longitudinal axis (A) is closed at one end by a seal (3), contact elements being fitted to the one end which are each electrically conductively connected to a power supply line (2) leading to a luminous element, the contact element being accommodated in a tubular part (15) of the seal part, characterized in that the contact element (5) protrudes outwards and is equipped in the interior of the tubular part with at least two outwardly protruding centering parts (10, 11) which are in contact with the tubular extension (16).

Abstract: An inventive method for determining the bulb temperature (T) of high pressure discharge lamps is disclosed that comprises the following steps: ascertaining a first spectral radiant power (MP) at a first wavelength (?P); ascertaining a second spectral radiant power (MC) at a second wavelength (?C) different from the first; determining the quotient (?) from the first and second radiant power; and determining the temperature (T) of the bulb on the basis of this quotient. It likewise discloses an apparatus for carrying out the inventive method.

Abstract: An optical light guide has a substantially rigid light transmissive body having an input window, a distal end, a front side, and a rear side. The light transmissive body has a substantially smooth exterior surface on the front side and a substantially clear and solid interior. The input window transmits light into the light transmissive body and extends substantially transverse to a longitudinal axis of a light emitting diode (LED) light source. The light transmissive body has a substantially constant thickness measured between the front side and the rear side. The light transmissive body extends away from the input window through an arc of from 60 to 120 degrees to an extension that forms an output region extending towards the distal end. The rear side, at least in said output region, is formed with a plurality of totally internally reflective steps directing intercepted light towards the front side.

Abstract: The HID lamp mount has a discharge tube with two ends. A shroud surrounds the tube. Shroud clips position the shroud ends. The shroud clips have arcuate portions engaging the shroud periphery and transverse portions spanning the shroud diameter and grasping and positioning the tube ends. A shroud rod attaches between the clips to maintain their positioning. An electrical lead-in connects the second electrode terminus and has a first leg extending transversely from the terminus and a second leg extending parallel to the electrode. An offset electrical lead-in connects the first electrode terminus, and has a first section extending transversely to the first electrode, a second section extending parallel to the shroud, a third section extending toward the shroud, and a fourth section extending parallel to the shroud. An offset electrical lead-in retaining clip is affixed to the shroud and the fourth section of the offset electrical lead-in retaining clip.

Abstract: A compact LED light source providing intensive LED positioning along with thermal dissipation can be made with a heat conductive plate supporting a plurality of LEDs mounted on the plate and in thermal contact with the plate. The plate further supports electrical circuitry providing electrical connection to the LEDs. A heat conductive stem mechanically supports the plate and may provide a thermal conduction path from the plate away from the LEDs. A high concentration of LED can then be conveniently mounted and held in close proximity for increased optical system intensity, while providing a thermal exit path for the associated increase in heat concentration.

Abstract: The bulb of the lamp is closed at opposite ends by sealing parts (6), with in each case one cap (8) being fitted at one end, the cap having an electrical contact element (13) which is connected in an electrically conductive manner to a supply conductor (15) leading to a luminous means, the contact element being accommodated in a tubular extension (11) of the sealing part. The cap part (8) has an adjustment part (14; 24), which is directed inward with respect to the interior of the lamp and is in contact with the sleeve (11) via a bracket.

Abstract: The folded pack consists of one piece, this part being produced from a substantially rectangular strip of board-like material (board blank), which is folded at fold lines (2-7) running transversely with respect to its longitudinal axis and spaced apart along the axis, the base part wrapping around the object to be packed by at least 360° and consisting of a front wall (8), a base part (9) and two side walls (10, 11) for holding the object (21) to be packed, the pack surrounding the elongated object in the shape of a parallelepiped, at least one viewing window (18) being cut out of the front wall (8) and one side wall (11), at least one edge zone of the viewing window (17) providing a holding function for the object (21).

Abstract: The invention relates to a method for designing a discharge lamp for use with a light-gathering system, in particular of a projector for data or video projection. Also disclosed are a lamp designed using such a method and a reflector provided therefore.

Abstract: An electric lamp having a base at one end, a lamp bulb sealed in a vacuum-tight manner, the lamp bulb being surrounded by an envelope part, a base having electrical connections bearing on one side the outer bulb and on the other side the envelope part, having the following features: a) the base has a base insulator which has a central opening in which the outer bulb is accommodated without cement; b) the base insulator has a circular, radially projecting segment having an upper and lower plateau which is associated with the base; c) on the base side the envelope part has a circular opening having a radially projecting edge which has a lower and an upper contact surface in relation to the base, the lower contact surface matching the upper plateau; and d) the envelope part is fixed to the base via a cement-free, mechanical retaining mechanism.