| CPC B60Q 1/085 (2013.01) [F21S 41/13 (2018.01); F21S 41/16 (2018.01); F21S 41/24 (2018.01); F21S 41/675 (2018.01); H05B 47/13 (2020.01); B60Q 2300/32 (2013.01)] | 20 Claims |
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1. An optical device (1) for a motor vehicle for projecting a graphic element into a region in front of the optical device, the optical device comprising:
a laser light source (2) for producing and emitting laser light, wherein the laser light source is configured to display visible laser light in the form of a graphic element;
an infrared light source (3) for producing and emitting infrared light;
a light guiding device (4) for guiding light along a beam path, comprising a first deflection element (4a), for example a beam combination element, a micromirror device (4b) and a second deflection element (4c);
an infrared detector (5) for detecting infrared light; and
a control device (7),
wherein the laser light source (2) is configured to emit laser light along a laser light emission direction (R1), wherein the infrared light source (3) is configured to emit infrared light along an infrared light emission direction (R2), wherein the laser light source (2) and the infrared light source (3) are arranged relative to one another in such a way that the laser light emission direction is substantially parallel to the infrared light emission direction,
wherein the light guiding device (4) is arranged downstream of the laser light source (2) and the infrared light source (3) along the laser light emission direction and along the infrared light emission direction and is configured to produce a light distribution, in particular a ground projection light distribution or a signal light distribution, in a laser light illumination area (2a) in front of the optical device (1) with the laser light from the laser light source (2), and to generate an infrared light beam from the infrared light from the infrared light source (3), with which an infrared light illumination area (3a) in front of the optical device (1) can be illuminated with infrared light,
wherein, in order to produce the light distribution, laser light from the laser light source (2) strikes the first deflection element (4a), which is configured to direct or deflect incident laser light onto the micromirror device (4b), which is configured to receive laser light directed or deflected by the first deflection element (4a) and to form the light distribution therefrom, wherein the laser light forming the light distribution is deflected by the micromirror device (4b) onto the second deflection element (4c), which is configured to deflect the light distribution in front of the optical device (1) into the laser light illumination area (2a), wherein the laser light follows a first beam path (s1) from the laser light source (2) to the second deflection element (4c),
wherein in order to produce the infrared light beam, infrared light from the infrared light source (3) strikes the first deflection element (4a), which is configured to deflect incident infrared light onto the micromirror device (4b), which is configured to receive infrared light deflected by the first deflection element (4a) and to form the infrared light beam therefrom, wherein the infrared light forming the infrared light beam is deflected by the micromirror device (4b) onto the second deflection element (4c), which is configured to deflect the infrared light beam in front of the optical device (1) into the infrared light illumination area (3a), wherein the infrared light follows a second beam path (s2) from the laser light source (2) to the second deflection element (4c),
wherein the first beam path (s1) and the second beam path (s2) have substantially the same course,
wherein the infrared detector (5) is configured to detect reflected infrared light from a measurement object which is located in front of the optical device (1) and which is struck by the infrared light beam, and to send a first sensor signal to the control device (7) depending on the detected reflected infrared light,
wherein the optical device (1) further has a time-of-flight sensor device (6), which is configured to detect a measurement object in a sensor area (6a) in front of the optical device (1) and to send a second sensor signal to the control device depending on the detected measurement object,
wherein the control device (7) is configured to receive the first sensor signal and the second sensor signal, wherein the control device (7) is connected at least to the laser light source (2) and/or the micromirror device (4b) for control purposes such that depending on the first sensor signal and the second sensor signal, the control device (7) controls the laser light source (2) and/or the micromirror device (4b) in order to change the light distribution depending on the first sensor signal and the second sensor signal.
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