Light source, optical device, related device, and method
AssigneeHuawei Technologies Co., Ltd.
InventorsFan Yang, Guangyuan Shi
Life of this patent
Estimating the term…
Abstract
A light source, an optical device, a related device, and a method are provided. The light source is configured to emit a laser-fluorescence combined beam. The optical device may be applied to the light source. The optical device can emit a fluorescent beam under excitation of a first laser beam in the light source, and can also suppress a speckle of a second laser beam in the light source. This helps the light source emit the laser-fluorescence combined beam that suppresses the speckle, and also helps reduce a quantity of devices in the light source and reduce a volume of the projection light source, thereby meeting a market requirement for miniaturization of a projector.
Claims20
A light source, wherein the light source comprises a first laser, an optical splitting device, an optical device, and a first optical combining device, wherein
- the first laser is configured to emit laser light;
- the optical splitting device is configured to split the laser light into a first laser beam and a second laser beam;
- the optical device comprises an optical mechanism and a driving mechanism, the driving mechanism is configured to drive the optical mechanism to move, a first region of the optical mechanism is used to receive the first laser beam and emit a fluorescent beam under excitation of the first laser beam, and a second region of the optical mechanism is used to receive the second laser beam and reduce coherence of the second laser beam;
- and
- the first optical combining device is configured to combine the fluorescent beam and the second laser beam that emerges from the second region.
A projection system, wherein the projection system comprises a lens, a projection optical core, and a light source, wherein
- the light source is configured to emit a light beam;
- the projection optical core is configured to modulate the light beam based on an image source, to obtain an imaging light beam;
- and
- the lens is configured to perform projection and imaging on the imaging light beam, wherein
- the light source comprises a first laser, an optical splitting device, an optical device, and a first optical combining device, wherein
- the first laser is configured to emit laser light;
- the optical splitting device is configured to split the laser light into a first laser beam and a second laser beam;
- the optical device comprises an optical mechanism and a driving mechanism, the driving mechanism is configured to drive the optical mechanism to move, a first region of the optical mechanism is used to receive the first laser beam and emit a fluorescent beam under excitation of the first laser beam, and a second region of the optical mechanism is used to receive the second laser beam and reduce coherence of the second laser beam;
- and
- the first optical combining device is configured to combine the fluorescent beam and the second laser beam that emerges from the second region.
A head-up display system, comprising an optical deflection module and a projection system, wherein
- the projection system is configured to transmit an imaging light beam to the optical deflection module;
- and
- the optical deflection module is configured to transmit the amplified imaging light beam to a windshield, and the amplified imaging light beam forms a virtual image through the windshield,
- wherein the projection system comprises a lens, a projection optical core, and a light source, wherein
- the light source is configured to emit a light beam;
- the projection optical core is configured to modulate the light beam based on an image source, to obtain an imaging light beam;
- and
- the lens is configured to perform projection and imaging on the imaging light beam, wherein
- the light source comprises a first laser, an optical splitting device, an optical device, and a first optical combining device, wherein
- the first laser is configured to emit laser light;
- the optical splitting device is configured to split the laser light into a first laser beam and a second laser beam;
- the optical device comprises an optical mechanism and a driving mechanism, the driving mechanism is configured to drive the optical mechanism to move, a first region of the optical mechanism is used to receive the first laser beam and emit a fluorescent beam under excitation of the first laser beam, and a second region of the optical mechanism is used to receive the second laser beam and reduce coherence of the second laser beam;
- and
- the first optical combining device is configured to combine the fluorescent beam and the second laser beam that emerges from the second region.
Dependencies are inferred from the claim text.