"The invention differs from the related art in that a first of the at least two semiconductor-light sources is made-up of a first construction type and a second of the semiconductor-light sources is made-up of a second construction type, whereby the first and second construction types differ in that their semiconductor-light sources have different luminous fluxes and efficiency. More specifically, the semiconductor-light sources of the first construction-type have higher luminous flux and lower efficiency in comparison with those of the semiconductor-light sources of the second construction type (on the other hand, the semiconductor-light sources of the second construction type have higher efficiency and lower luminous flux in comparison with those of the semiconductor-light sources of the second construction type).
"One section being illuminated by the first semiconductor-light source of the light distribution and not identical with the section being illuminated by the second semiconductor-light source of the light distribution results in the possibility that a semiconductor-light source for illuminating a certain section can be chosen with special consideration of the luminous flux demands for that section. This advantage is real feed in that the lesser efficient and rather high luminous-flux-emitting first semiconductor-light sources are only used for sections with a comparatively high demand of luminous flux while the more efficient second semiconductor-light sources can be used for sections with a comparatively lower demand of luminous flux.
"In an embodiment, with sections having different demands of luminous flux, those sections with higher demands of luminous flux are illuminated by high luminous-flux-emitting semiconductor-light sources, and those sections with lower demands of luminous flux are illuminated by semiconductor-light sources having higher efficiency.
"In an embodiment, for all semiconductor-light sources of one light module, one common cooling element is used.
"In an embodiment, the individual optical lenses are part of a single-piece optical-lens carrier.
"In an embodiment, the optics for each of the at least two light sources has an optical lens and a common secondary lens for several semiconductor-light sources, whereby, in any case, the optical lenses are arranged in such a way that they focus the light of a semiconductor-light source and direct it onto the secondary lens directly or indirectly and the secondary lens is arranged in such a way that incoming light is directed into the front area of the headlight.
"In an embodiment, the optical lenses are light-focusing TIR-optics or ancillary lenses. In an embodiment, the optics consists of a panel. In an embodiment, the panel is a mirrored panel that is designed and arranged to reflect incoming light of the semiconductor-light sources on the mirrored area toward the secondary lens.
"In an embodiment, the light distribution in the front area of the headlight consists of a central section and peripheral sections surrounding the central section, whereby the central section is illuminated by at least one of the semiconductor-light sources of the first construction type.
"In an embodiment, at least one of the peripheral sections is illuminated by at least one of the semiconductor-light sources of the second construction type.
"In an embodiment, the light distribution consists of peripheral sections, a left-side illuminating area, a left front-section area, a central front-section area, a right front-section area, a right-side illuminating area, a central maximum area, and a central gradient area of an asymmetrical light distribution.
"In an embodiment, each of the left-side illuminating area, right-side illuminating area, and central maximum area is illuminated with two semiconductor-light sources, while each of the remaining sections and areas is illuminated with one semiconductor-light source. In an embodiment, the central maximum area is illuminated by two semiconductor-light sources of the first construction type. In an embodiment, the left-side illuminating area and right-side illuminating area are illuminated by two semiconductor-light sources of the second construction type or one semiconductor-light source of the first construction type and one semiconductor-light source of the second construction type, respectively. In an embodiment, the central gradient area of the asymmetrical light distribution is illuminated by a semiconductor-light source of the first construction type.
"Other objects, features, and advantages of the invention are readily appreciated as it becomes more understood while the subsequent detailed description of at least one embodiment of the invention is read taken in conjunction with the accompanying drawing thereof.
BRIEF DESCRIPTION OF EACH FIGURE OF DRAWING OF INVENTION
"FIG. 1 shows an embodiment of a headlight of a motor vehicle according to the invention;
"FIG. 2 shows perspectively an arrangement of 'n' semiconductor-light sources on a circuit board with corresponding optical lenses and a cooling element;
"FIG. 3 shows several sections of a light distribution of the headlight;
"FIG. 4 shows diagrammatically value pairs of luminous flux and efficiency for three different construction types of semiconductor-light sources;
"FIG. 5 shows an example of an arrangement of a total of 'N' semiconductor-light sources of a first construction type and second construction type;
"FIG. 6 shows an example of an arrangement of a total of 'n' semiconductor-light sources of a first construction type and second construction type; and
"FIG. 7 shows an example of an arrangement of a total of 'n' semiconductor-light sources of a first construction type, second construction type, and third construction type."
For additional information on this patent application, see: Fadel, Kamislav; Hamm, Michael; Ho feld, Wolfgang; Buchberger, Christian. Motor Vehicle Lighting Device. U.S. Patent Application Serial Number 570466, filed
Keywords for this news article include: Patents, Electronics, Semiconductor, Light-emitting Diode.
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