Abstract: In addition to the patches to be measured, a pattern of strips, one of which is formed by a combination of cyan and magenta and the other by a combination of yellow and black, is printed prior to the printing of the patches. The band patterns are printed by setting each of the component colors at the same gray scale value as the maximum value of the measurement patches for each color. Thus, in the printing of each band pattern, ink is ejected at two times the duty of the patch with the maximum gray scale value, thereby eliminating the viscous ink almost completely.

Abstract: An ink jet apparatus comprising a nozzle arranged to eject ink droplets and an edge detector arranged to detect droplets having a first range of trajectories and arranged not to detect droplets having a second range of trajectories, the nozzle being arranged to eject one or more first droplets from each of a plurality of positions known relative to the edge detector, the positions being arranged such that the number of first droplets detected by the edge detector varies in dependence upon the magnitude of a component of the ejection direction of the nozzle, the apparatus being arranged to substantially determine a component of the ejection direction of the nozzle in dependence upon the detection by the edge detector.

Abstract: A pen alignment method for a multi-pen printer is provided, the method including directing a first pen to print a first pattern of a first color, directing a second pen to print a second pattern of a second color in a predetermined relative alignment with the first pattern to form a test block, determining an actual hue of the test block via spectral analysis of the test block using a color sensor, and comparing the actual hue of the test block with an expected hue of the test block to determine whether the first and second pens are misaligned relative to each other, wherein the expected hue of the test block is the hue that would be detected if the first pen and second pen were correctly aligned.

Abstract: A method for manufacturing a liquid jet recording head is arranged to include the step of connecting, by use of a single point bonder, TAB tapes for supplying electric power with a chip for a liquid jet recording head having, on the central part thereof, an ink supply hole and discharge energy transducing devices for discharging ink. For this method of manufacture, the inner leads of the TAB tapes are connected with the electrode pads on the chip by use of a single point bonding tool having a groove structure formed by two grooves configured to intersect vertically at the tip thereof. With the method of manufacture thus arranged, there is no need for the enhancement of adsorption to fix the chip on the chip stage of an ILB bonder. The fixation is possible with a comparatively weak adsorption in this respect. Hence there is no fear that dust particles or the like in the atmosphere are sucked and adhere to the upper surface of discharge energy transducing devices on the chip.

Abstract: An image forming method and apparatus for ejecting a recording fluid constituted by a plurality of inks from a common ink ejection port while a mixing ratio of the plurality of inks is changed with respect to one pixel based on an image signal, and transporting the plurality of inks to an image receiving medium which is moved with respect to the ink ejection port to form an image. An opening area Ai of a channel of an image forming ink is smaller than the opening area of the channel of an image non-forming ink in a confluence (mixing section) of the plurality of inks, and the opening area Ai has the following relationship with a minimum ejection volume Vi of the image forming ink: Ai≦1.2×Vi(⅔), so that with an excessively small amount of the image forming ink to be mixed with the image non-forming ink, a leading end of the ink is cut well, an image density having fidelity to the image signal can be obtained, and an image quality can be enhanced.

Abstract: A method for operating a printer having vertically offset printheads each having an array of nozzles. A method step includes printing in a first mode which enables a larger number or all of the nozzles of the printheads. Another step includes printing in a second mode which enables only nozzles defining a common print region for the printheads. In one example, the first and second modes occur in different raster lines of the same sheet of print medium. In another example, the first and second modes occur in different print jobs.

Abstract: A swath printing system such as multi-color inkjet printing which uses lower resolution printheads of at least 300 dpi nozzle spacing to achieve high resolution output of at least 600 dpi addressability in both the X (media advance) and Y (carriage scan) axes. Synchronized depletion masks for area fills and edge enhancement is provided which is plot independent and prevents drop overlap. It is especially suited for multi-pass print modes since each row has a balanced number of pixels, and there are no rows which have no “on” pixels. The depletion includes separate depletion masks and rules for edge enhancement as compared to area fills. Each color plane is depleted separately, but subject to the same depletion rules and masks. A separate depletion step provides for narrowing the vertical and horizontal dimensions of the figure to be printed.

Abstract: An ink-jet printer head includes a main body which is provided with a plurality of pressure chambers to which ink is supplied and a nozzle which is provided for each pressure chamber to cause the pressure chamber to communicate with the outside, and whose portion is formed from a piezoelectric material. In each pressure chamber, an electrode for applying a voltage to the piezoelectric material is provided to change the volume of the pressure chamber. A surface of the electrode is coated with an insulating film to electrically insulate the electrode from the ink, and the surface of the insulating film is partially or entirely coated with a metal film.

Abstract: An inkjet print head includes a nozzle, and an ink pool temporarily holding a printing ink and a first screen. The first screen has at least a convex bar column, the bar column having a plurality of bars arranged in a longitudinal direction of the ink pool and spaced apart from each other. A piezo element pumps the printing ink from the ink pool to the nozzle.

Abstract: A printhead chip for an inkjet printhead includes a substrate. A plurality of nozzle arrangements is positioned on the substrate. Each nozzle arrangement includes nozzle chamber walls and a roof that define a nozzle chamber with the roof defining an ink ejection port in fluid communication with the nozzle chamber. An ink-ejecting member is positioned in the nozzle chamber. The ink-ejecting member is displaceable towards and away from the ink ejection port so that a resultant fluctuation in ink pressure within the nozzle chamber results in an ejection of ink from the ink ejection port. At least one work-transmitting structure is displaceable with respect to the substrate and is connected to the ink-ejecting member so that displacement of the work transmitting structure results in displacement of the ink-ejecting member. An actuator is connected to the work-transmitting structure. The actuator is capable of displacing the work transmitting structure upon receipt of an electrical drive signal.

Abstract: A liquid ejection method wherein a bubble is created in the liquid on a heat generating member provided on a substrate by thermal energy generated by the heat generating member, by which a droplet of the liquid is ejected, the method comprising the steps of contacting to the substrate such a portion of gas-liquid interface between the bubble and the liquid as is not contacted to the substrate by deformation of the bubble: and causing the bubble to be in fluid communication with ambiance simultaneously with or after the contact between the portion and the substrate.

Abstract: An ink jet recording head comprises heating means for generating a heat energy to be utilized for discharging an ink, and a nonlinear element for driving the heating means, having MIM type current/voltage characteristics in which a resistance value during application of a low voltage indicates a high value regardless of polarity as compared with the resistance value during application of a high voltage, wherein the nonlinear element has an electric field relaxing structure for relaxing generation of a locally strong electric field.

Abstract: This present invention is embodied in a large array printhead having a large array of thin-film ink drop generators formed on a single monolithic substrate. The large array printhead includes a multiplexing device to reduce parasitic resistance and the number of incoming leads. In a preferred embodiment, the substrate is initially patterned and etched and the multiplexing device is attached to the substrate at a later time. The present invention also includes methods of fabricating a plurality of large array printhead embodiments using a single monolithic substrate made of a suitable material, preferably having a low coefficient of thermal expansion.

Abstract: A silicon wafer substrate is used in ink-jet printhead fabrication. The fabrication process is improved by simultaneously forming MOSFET source/drain contact vias simultaneously with substrate contact vias. A dry etch having a silicon oxide:silicon etch rate of at least 10:1 is employed.

Abstract: A fluid ejection device includes a substrate, a stack of thin film layers and a further substrate. The substrate has a first surface and a second surface, and defines a fluid supply conduit. The stack of thin film layers has a first surface and a second surface, with the first surface of the stack of thin film layers being affixed to the second surface of the substrate. In one embodiment, the stack of thin film layers includes at least one ink energizing element, and defines a plurality of fluid filter openings that are in fluid communication with the fluid supply conduit of the substrate. The fluid filter openings function as a fluid. The further substrate has a first surface coupled to the second surface of the stack of thin film layers, and an exterior second surface.

Abstract: A liquid ejection method including the steps of preparing a head comprising an ejection outlet, a bubble generation region, a movable member faced to the bubble generation region and displaceable from a first position to a second position further from the bubble generation region than the first position; displacing the movable member from the first position to the second position by pressure produced by the generation of the bubble to permit greater expansion of the bubble downstream as compared to upstream; and supplying a driving pulse to generate each bubble, wherein the pulse is divided into a first pulse for pre-heating the liquid and a second pulse for ejecting the liquid.

Abstract: Droplet deposition apparatus comprising first and second channels (82a, 82b), one end of each channel communicating with a single, common supply chamber (40) for supply of droplet liquid and the respective other ends of the first and second channels each communicating with a respective further supply chamber (88, 92) for supply of droplet liquid; each of said first and second channels having an opening (96a, 96b) for ejection of droplets therefrom; and actuator means being associated with each channel for effecting the ejection of droplets.

Abstract: An inkjet recording apparatus ejects ink from recording heads to a recording paper, thereby attaching the ink to the medium for recording. The apparatus includes a carriage driving motor, a transfer motor, a scanner which reciprocates a carriage having the recording heads in a scanning direction, and a transfer machine. The transfer machine transfers the recording paper in a transfer direction perpendicular to the scanning direction. Both of the motors are located at approximately the same place in an ejecting direction of ink from the heads to the paper, and at the same height of a transfer path of the paper or on the carriage side with respect to the transfer path. A single ink supply tube supplies ink in a greater amount per unit time than other ink supply tubes. At least a part of the ink supply tube has a larger diameter than the other ink supplies tubes.

Abstract: There is provided an ink cartridge which is formed from an ink-filled ink pack and a hermetic outer shell case for housing the ink pack and which supplies ink to a recording head by means of application of air pressure to a space between the outer shell case and the ink pack. The outer shell case is formed by coupling an upper case and a lower case together. The ink-filled ink pack is housed in the lower case, and the upper case is laid on the lower case from above. The upper and lower cases are hermetically sealed by vibratory welding or heat welding, thus constituting the ink cartridge.

Abstract: There is provided an ink-jet recording head comprising a printing head unit which has one or more discharge portions for discharging one or more types of fluids for printing, a tank holder unit in which one or more tanks for storing one or more types of fluids to be discharged by the printing head unit are loaded, and a fluid supply path which is formed in the tank holder unit and communicates with the printing head unit and the tank, wherein a buffer chamber for keeping gas is connected to the fluid supply path.

Abstract: A recording unit is provided which includes an ink housing part for housing an ink containing a coloring material and an aqueous medium, and an ink jet head part for discharging an ink droplet of the ink, wherein at least one color of the ink is a polyvalent metal salt containing ink further containing a polyvalent metal salt; the ink jet head part for discharging at least the polyvalent metal salt containing ink has a configuration comprised of a substrate having on a base body, a heat-generating resistor member forming a heat-generating part, an electrode wire electrically connected to the heat-generating resistor member, and a cavitation resistant film provided on the heat-generating resistor member and the electrode wire via an insulating protection layer, and a liquid flow path communicating with a discharge port for discharging an ink droplet provided corresponding to the heat-generating part; and the cavitation resistant film includes a layer comprised of an amorphous alloy containing Ta and a layer co

Abstract: An image transfer system, including a member for supporting print media, the member including a pair of sidewalls depending therefrom, a pair of end caps, wherein one end cap is connected to the sidewalls at an end thereof and the other end cap is connected to the opposite end of the sidewalls, and a heating element disposed against the underside of the member and in contact with each of sidewalls and end caps.

Abstract: Described are techniques for preventing the forces attributable to shrinkage of print media from shifting print media on the media-carrying belt in the vicinity of the print zone. In one approach, a “hold zone” is identified immediately upstream of the print zone. In the hold zone, a mechanism is employed for securing the media to be immovable relative to the belt. The hold mechanism provides sufficient force to overcome tension transmitted to the dry portion of the media as the remaining portion shrinks. In one embodiment, the hold mechanism is a roller that pinches the media against the belt. In another embodiment, the amount of vacuum pressure applied to the belt is regulated so that the suction force applied to the media in the hold zone is greater than the suction force applied to the media in the portion upstream of the hold zone.

Abstract: A visual corrective device is provided in the form of a visual field occluder for use with a pair of eyeglasses having a frame formed with an inside bridge joining lens frame portions in which the lenses are seated, a separately attached nose pad, and outside bows, earpieces, on either side for supporting the pair of eyeglasses. The large end of the patch has a slit, which will allow the patch to slide over the nose pad. The small end has a puncture (+) which allows the patch to slide over the earpiece and adjust to fit against the face. The visual field occluder, because of symmetrical design, may be fitted on either the right or left side of a pair of eyeglasses. The field of view of the stronger eye will be occluded by the patch thereby constraining the wearer to exercise greater use of the weaker eye through the field of view of the unoccluded eye.

Abstract: A nose pad for glasses includes a frame, a fixing seat set under an arch of the frame, insertion posts with one end fastened onto the fixing seat and the other end bent downwardly and vertically to get connection to the nose pad. A soft nose pad in the shape of &OHgr; forms a relatively thick arched member at each side. At the outer, lateral side of the arched member set an upper projection and a lower projection. The upper projection has a vertical through hole. The lower projection has a positioning groove with its opening facing upward. The nose pad is installed by passing through the insertion posts to the vertical through hole in the upper projection and fastening the ends of the insertion posts onto the positioning groove in the lower projection.

Abstract: An eyeglass assembly having a lens frame; a temple piece; an electrical insert projecting from either the lens frame or the temple piece; and a receiver provided in or on the other of the lens frame or temple piece. The electrical insert is removably insertable into the receiver for both releasably attaching the temple piece to the lens frame and for establishing an electrical connection therebetween.

Abstract: This invention includes an ophthalmic lens having a convex surface and an opposite concave surface where one of said surfaces contains alternating distance and near power zones where one or more distance zones have cylinder power.

Abstract: Orthokeratological contact lens and designs methods satisfy one of a group of design constraints. Arc lengths, surface areas, cross-sectional areas, saggital depth and volumes defined by an intersection of a base surface selected to mold an anterior surface of cornea and a curve located at the position of the anterior surface before molding satisfy specified conditions. In an example, an arc length measured along the anterior surface is equal to a sum of arc lengths measured along a relief surface and the base surface. In another example, a surface area of the anterior surface is equal to a sum of surface areas on the relief surface and the base surface. In addition, contact lenses are disclosed that satisfy these constraints, and instructions for performing the methods are stored on computer readable media.

Abstract: The invention provides a system and method which include receiving inputs from the surgeon based upon patient data and eye measurements, calculating precise corrective settings for laser equipment utilized in the surgery, and outputting the precise corrective settings along with recommendations and cautions for the surgical procedure. It should be understood by those reasonably skilled in the art that the nomograms and formulas described in the invention are dynamic formulas subject to change over time. Changes in the nomogram are required to customize a nonogram for an individual surgeon. In addition, as the art advances, adjustments in the nomograms, including addition and removal of variables, and changes in constants will be required to keep the nomogram consistent with the rapidly evolving state of the art. These changes can be accomplished through upgrades in computer programs.

Abstract: A modular fundus camera including an adaptive optical module that detachably interfaces to a fundus camera body and image capture subsystem. The fundus camera body directs light produced from a first light source into the human eye and then collects and collimates retinal reflections. The adaptive optical module includes a wavefront sensor, controller and phase-compensating optical element. The wavefront sensor measures phase aberrations in the retinal reflections and operates in a closed-loop fashion with the controller to control the phase-compensating optical element to compensate for such phase aberrations to produce phase-compensated retinal reflections for output to the image capture subsystem.

Abstract: An electronic projector has a projection system that includes a spatial light modulator (SLM) for importing image information to the projected light beam. The light beam leaving the SLM is prepolarized in a defined orientation and the projected light is polarized in the same orientation so as to effectively block any light that has been scattered within the projector and become depolarized. The SLM may be a digital mirror device (DMD). Reflective surfaces within the projector may be covered or coated with material that alters the polarization of reflected stray light from the defined orientation or depolarizes the reflected stray light.

Abstract: The present invention discloses a projection display device, including a light source supplying light having a s-wave light and a p-wave light; a first polarizing beam splitter including a reflecting surface, transmitting the p-wave light and reflecting the s-wave light; a retardation film arranged between the light source and the polarizing beam splitter to cover a portion of a front surface of the polarizing beam splitter, and converting the s-wave light into the p-wave light and the p-wave light into the s-wave light; a mirror re-reflecting the s-wave light reflected from the reflecting surface of the first polarizing beam splitter toward the reflecting surface of the first polarizing beam splitter, so that the s-wave light directs toward the retardation film.

Abstract: In an optical engine for a projection system, a fan unit is mounted on an upper surface of a housing, and has an inlet port facing toward light modulators within the housing for drawing air upwardly so as to dissipate heat generated by the light modulators, and an outlet port that is transverse to the inlet port for discharging the air drawn into the inlet port.

Abstract: A display apparatus having a reflecting type light valve which has a light incidence/reflection surface, a drive circuit which drives the reflecting type light valve by supplying an image signal, a cooling system which cools at least the reflecting type light valve with cooling fluid, and a partition wall which partitions a space in the display apparatus into a cooling fluid side and a light incidence/reflection side. The reflecting type light valve forms a part of the partition wall, and the light incidence/reflection surface faces the light incidence/reflection side and a part opposite to the light incidence/reflection surface of the reflecting type light valve is cooled by the cooling system.

Abstract: An overhead projector including a Fresnel lens, a single element meniscus projection lens having a concave side and a convex side, and a folding mirror placed in an optical path between the Fresnel lens and the projection lens. The projection lens is oriented to have the concave side optically facing the Fresnel lens. The optical design of the overhead projector follows the following equation, FFres=(FLens(MLens+1)/MLens−SLD)/(MFres+1), where the Fresnel lens has a focal length FFres, and a magnification MFres, the projection lens has a focal length FLens and a magnification MLens, and SLD is the distance from the stop position and the projection lens.

Abstract: A silicon wafer has a plurality of chip portions and a plurality of street portions. Each of the street portions runs and spaces between neighboring chip portions. The wafer also has circuits each provided on the street portions. The circuit is reinforced by a reinforcing portion. The reinforcing portion is provided on the circuit before dicing and then cut out in part by dicing so that it remains in part on at least one end portion of the circuit, adjacent to the chip portions, after dicing.

Abstract: An extendable exterior rearview mirror assembly includes a mounting bracket, a mirror subassembly, and a support which is supported by the mounting bracket. The mirror subassembly is supported by the support and is mounted for selective movement along the support arm to one of a plurality of viewing positions. The mirror subassembly includes a housing, a reflective element, and an actuator which supports the reflective element on a forward facing wall of the housing. The rearview mirror assembly further includes a clamping assembly which provides a force to urge frictional engagement between the housing and the support to limit movement of the mirror subassembly along the support. In preferred form, the support extends into the housing and frictionally engages an exterior surface of the forward facing wall.

Abstract: An optical path folding apparatus of the present invention receives an incident light and reflects a reflection light on a lens set. The optical path folding apparatus comprises a first portion receiving the incident light and reflecting a first light beam, a second portion receiving the first light beam and reflecting a second light beam, a third portion receiving the second light beam and reflecting a third light beam, a fourth portion receiving the third light beam and reflecting a fourth light beam, a fifth portion receiving the fourth light beam and reflecting a fifth light beam, and a sixth portion receiving the fifth light beam and reflecting a reflection light on the lens set. In a preferred embodiment, the first portion and the fifth portion are coplanar on a first mirror, while the second portion, the fourth portion and the sixth portion are coplanar on a second mirror.

Abstract: An electrophotographic machine includes a mirror having a reflective surface with a fold line configured to reflect a laser beam. At least one fixed mounting device is provided having a support surface. At least one rotational device is attached to the mirror. The at least one rotational device has an arcuate surface defining an imaginary circle and engages the support surface of the at least one fixed mounting device. The imaginary circle has a center substantially coincident with the fold line of the reflective surface. The at least one rotational device is configured to rotate about the center of the imaginary circle to thereby rotate the mirror about the fold line.

Abstract: An apparatus and method for compound angle illumination of items such as electronic components and features on those components that are within a field of view of a camera. Illumination assemblies are provided on opposite sides of the components, where illumination criss-crosses the component and its features. The illumination assemblies are also tilted at a vertical angle relative to the component. Light emitting diodes are used as a light source and, in one embodiment, refracting prisms are provided to refract the light from the LED's to provide the criss-cross illumination.

Abstract: A front-end surface illumination device is provided which is high in visibility when it is illuminated or not, low in power consumption, and compact. When a light beam emitted from an organic electroluminescence element formed on an end face of a light transmission plate reaches projecting portions, the light is emitted from the light transmission plate, and irradiated on an illuminated object. In this constitution, the light transmission plate has the function of projecting the light beam to the illuminated object, and transmitting the light beam reflected by the illuminated object with little diffusion.

Abstract: A lamp, in particular a lamp for medical applications (operating lamps), having at least one light source, and at least two reflectors, is provided where in order to form a low-shadow illuminated area, light emerging from the lamp impinges upon the illuminated area by at least two different angles of incidence, such that the angles of incidence of the light can be adjusted by changing the distance between the at least two reflectors or between one reflector and the source of the light. The at least two reflectors may be arranged so that they can shift in the radial direction on carrier rails that extend radially from the center of the lamp. In this arrangement, the reflectors always lie on a common circular circumference, and the reflectors can be shifted through manually activated gears or through electric drive motors.

Abstract: A purse has an illuminating device. The purse has a main storage area. A flap member is provided and has a first end permanently coupled to the main storage area and a second end removably coupled to the main storage area. A lighting device is coupled to the purse. The lighting device has a power supply and a light element coupled to the power supply. A housing unit is coupled to the flap member of the purse and holds the power supply and light element. A spring loaded switch is coupled to the flap member and automatically causes the lighting device to activate when the flap member is lifted.

Abstract: The present invention is directed to a plurality of light bulbs sets, are connected to a 2-core wiring, the positive end joints of the two sets of light bulbs, as well the negative end joints of two sets of light bulbs, are joined together by a process of twisting the two wires around each other, and in this way avoid the necessity of using soldering tin to weld the two wires together. One other part of the invention involves building an interior duct in the inside an outer PVC layer, so that flexible metal wire can be inserted into the interior duct, and in this way make the manufacturing process more efficient. Moreover, at the place where the outer level PVC layer connects to a female connector protruding type water-proofing is installed, and at the place the outer PVC layer connects to the male connector concave type water-proofing is installed.

Abstract: In the spread illuminating apparatus in which the light emitted from the light emitting diode 4, which is disposed close to the transparent substrate 2, is made to be emitted toward the viewing direction of the transparent substrate 2, the groove 2a is provided on the transparent substrate 2 in such a manner as it crosses orthogonally light emitted in a radial direction from the light emitting diode 4 so that most light beams 5a, 5b, 5c can be emitted toward the viewing direction. Since the light beams 5a, 5b and 5c progress in the viewing direction through the groove 2a, an amount of light turning aside to no purpose can be reduced.

Abstract: A hanger rod for supporting clothes hangers, wherein an elongated rod including a slot extends along the upper longitudinal surface of the elongated rod; at least one hanger rail mounted within the slot at least at one predetermined position therein and in noncontacting relationship with the surface of the elongated rod; and at least one hanger supported on the hanger rail to prevent substantial contact of the hanger with the surface of the hanger rod, thereby reducing the frictional engagement between the at least one hanger and the surface of the hanger rod. The elongated rod may include a lighting fixture mounted therein and emitting light at least from both end portions of the elongated rod and/or from a slot extending along the bottom of the elongated rod.

Abstract: A multi-function handheld device includes a casing unit, a torch unit, a mirror piece, a magnifying lens piece, a thermometer, and a compass. The casing unit includes lower and upper casing members. Rear casing parts of the casing members cooperatively confine an air inlet. The rear casing part of the lower casing member is further formed with an air outlet to permit generation of a whistling sound output. Front casing parts of the casing members are spaced apart so as to define a receiving slit for mounting the mirror and lens pieces pivotally therein. The casing unit further has receiving cavities for mounting the thermometer and the compass respectively therein. The torch unit is mounted in torch receiving chamber of the front casing part of the upper casing member, and includes a press member that is operable to make electrical connection between a lamp member and a battery set.

Abstract: A parabolic louver and side light seal are disclosed for use in an overhead lighting system. The parabolic louver comprises a series of ultra-thin, lightweight stringers and baffles arranged perpendicular to one another and securely connected via “snap-fit” side and center joints. The side light seal comprises two side rails and two end rails. The two side rails are mounted to the sides of the parabolic louver to reinforce the louver, to provide a light seal, and to precisely locate the louver below the light source.

Abstract: A luminaire for an elongate lamp has longitudinal reflectors running parallel to the lamp and a multiplicity of spaced-apart transverse lamellae. The lamellae have a bottom, tapering region with a bottom edge that is curved. The cross-section of the bottom, tapering region is of the same shape over the width of the transverse lamellae. The edges of the bottom tapering region have the same curvature, with the lower edge coinciding with the bottom edge of the transverse lamellae.

Abstract: An electrically driven light emitting diode (LED) assembly and the method of assembling same. The assembly includes an electrically and thermally conductive heat dissipater (10) sandwiched under an electrically insulating layer (12) with circuit traces (14) disposed over the insulating layer (12) to prevent electrical conduction between the traces (14) and the heat dissipater (10). A plurality of light emitting diodes (20) have electrical leads (22) extending laterally from opposite extremities of each LED (20) to overlie the traces (14) for electrical contact with the traces (14) for powering the LEDs (20). An independent and generally U-shaped holding device (24, 26, 28, 30 and 32), as viewed in cross section, defines a base overlying the LED (20) and a pair of legs (36, 136) depending therefrom and transversely to the electrical leads (22) between the LED (20) and the heat dissipater (10). The base defines a hole (38) and the LED (20) protrudes (39) through the hole (38) to emit light.