A luminous device for a motor vehicle, said device including a pixelized light source and an optical system that is arranged to project a pixelized light beam emitted by the pixelized light source, the optical system comprising a first mirror arranged to collect and reflect rays of the pixelized light beam emitted by the pixelized light source, a second mirror arranged to reflect the rays reflected by the first mirror, and a third mirror arranged to receive the rays reflected by the second mirror and to reflect these received rays so as to correct field aberrations. The invention enables improved projection of a pixelized light beam by a luminous motor-vehicle device.

A luminous device for a motor vehicle, said device including a pixelized light source and an optical system that is arranged to project a pixelized light beam emitted by the pixelized light source, the optical system comprising a first mirror arranged to collect and reflect rays of the pixelized light beam emitted by the pixelized light source, a second mirror arranged to reflect the rays reflected by the first mirror, and a third mirror arranged to receive the rays reflected by the second mirror and to reflect these received rays so as to correct field aberrations. The invention enables improved projection of a pixelized light beam by a luminous motor-vehicle device.

A headlight for a vehicle includes a light source. The light source includes: a substrate; a light emitting diode chip; and a phosphor. The phosphor through which light exiting from a light emitting surface penetrates. The phosphor includes an exiting surface through which the light from the light emitting surface penetrates and exits. A first direction of the exiting surface corresponds to a height direction of a light distribution pattern by the light exiting from the exiting surface, and a second direction of the exiting surface corresponds to a spread in a lateral direction of the light distribution pattern. A dimension in the first direction of the exiting surface is smaller than a dimension in the second direction of the exiting surface.

A headlight for a vehicle includes a light source. The light source includes: a substrate; a light emitting diode chip; and a phosphor. The phosphor through which light exiting from a light emitting surface penetrates. The phosphor includes an exiting surface through which the light from the light emitting surface penetrates and exits. A first direction of the exiting surface corresponds to a height direction of a light distribution pattern by the light exiting from the exiting surface, and a second direction of the exiting surface corresponds to a spread in a lateral direction of the light distribution pattern. A dimension in the first direction of the exiting surface is smaller than a dimension in the second direction of the exiting surface.

A lighting device including at least one surface light source and a support for this, wherein the surface light source includes a fixing element which has a T-shaped cross-section, and wherein the support includes a receiving part for the fixing element, a cross-section through the receiving part having a shape complementary to the cross-section of the fixing element. In the lighting device according to the invention, the fixing element includes an upright and a head, the upright extending from a lower face of the surface light source, the upright and the head together with this lower face delimiting at least one engagement groove for the receiving part of the support. Application to motor vehicles.

A lighting device including at least one surface light source and a support for this, wherein the surface light source includes a fixing element which has a T-shaped cross-section, and wherein the support includes a receiving part for the fixing element, a cross-section through the receiving part having a shape complementary to the cross-section of the fixing element. In the lighting device according to the invention, the fixing element includes an upright and a head, the upright extending from a lower face of the surface light source, the upright and the head together with this lower face delimiting at least one engagement groove for the receiving part of the support. Application to motor vehicles.

An optical system includes optical fibers, a decoupling surface, an intersecting surface and a connecting portion. The optical fibers are arranged in at least one row. Each of the optical fibers includes a coupling surface onto which light from a light source is received. Light is directed through the optical fibers along an optical main axis. Light emitted from the optical fibers is directed onto a decoupling surface. The connecting portion is planar and is disposed between the decoupling surface and the optical fibers. The intersecting surface bounds the decoupling surface and is parallel to the optical main axis. Each of the optical fibers has an intersecting face oriented parallel to the optical main axis and parallel to the intersecting surface. The intersecting surface and the intersecting faces of the optical fibers generate a sharp outer edge of a light pattern formed by light emitted from the optical system.

An optical system includes optical fibers, a decoupling surface, an intersecting surface and a connecting portion. The optical fibers are arranged in at least one row. Each of the optical fibers includes a coupling surface onto which light from a light source is received. Light is directed through the optical fibers along an optical main axis. Light emitted from the optical fibers is directed onto a decoupling surface. The connecting portion is planar and is disposed between the decoupling surface and the optical fibers. The intersecting surface bounds the decoupling surface and is parallel to the optical main axis. Each of the optical fibers has an intersecting face oriented parallel to the optical main axis and parallel to the intersecting surface. The intersecting surface and the intersecting faces of the optical fibers generate a sharp outer edge of a light pattern formed by light emitted from the optical system.

Discussed is a vehicle lamp using a semiconductor light-emitting device. The vehicle lamp includes a light source unit for emitting light. The light source unit includes a base substrate; a first electrode arranged on the base substrate; a plurality of semiconductor light-emitting devices arranged on the first electrode; and a second electrode arranged on upper sides of the semiconductor light-emitting devices and arranged so as to overlap with the semiconductor light-emitting devices, wherein the second electrode includes a plurality of protruding electrodes protruding toward a lower side of the second electrode, and the protruding electrodes can come in contact with the semiconductor light-emitting devices such that the protruding electrodes are electrically connected to the semiconductor light-emitting devices.

The present disclosure provides a high-precision dimming circuit.

A dimming circuit (107) includes an input stage (IN) and an output stage (OUT). The input stage (IN) includes a plurality of amplifiers (AMP1 to AMP3) which have non-inverted input terminals (+) thereof inputted with different dimming input voltages (DCDIM1, DCDIM2 and VH), respectively, and inverted input terminals () thereof inputted with a common dimming output voltage (V3). The output stage (OUT) is connected between respective output terminals of the plurality of amplifiers (AMP 1 to AMP3) and an output node of the diming output voltage (V3), and outputs, among the plurality of dimming input voltages (DCDIM1, DCDIM2 and VH) respectively inputted to the plurality of amplifiers (AMP1 to AMP3), a lowest voltage as the dimming output voltage (V3).