Abstract: A laser radar integrated device, including a cover plate (Q10, M10, N20, P60), a fixed support (Q20), a lifting structure (Q30), a pop-up structure (Q50), a laser radar (Q60), and a controller (Q70, D50). The cover plate (Q10, M10, N20, P60) is located on a vehicle fender (Q80, M200, N200, P200) and matches with the size of an opening in the fender (Q80, M200, N200, P200); the fixed support (Q20), the lifting structure (Q30), the pop-up structure (Q50), the laser radar (Q60) and the controller (Q70, D50) are located inside the fender (Q80, M200, N200, P200); the lifting structure (Q30) is disposed on the fixed support (Q20) and connected to the cover plate (Q10, M10, N20, P60); the laser radar (Q60) is disposed on the pop-up structure (Q50) which is disposed on the fixed support (Q20). Also disclosed is a vehicle provided with a laser radar integrated device.

Abstract: A method for preparing all-solid-state photonic crystal fiber preform by extrusion by aligning the center of the first jacking end of the first jacking rod with the center of the core outlet mold. The adverse effect on this part of extruded core glass by oxygen or other impurities in air during the extrusion out of the core outlets can be avoided. The defects on the core glass surface and the cladding glass surface can be effectively removed, and the purity and quality of the core component in the obtained fiber preform can be improved.

Abstract: The present invention discloses a method for preparing all-solid-state photonic crystal fiber preform by extrusion. Firstly, aligning the center of the first jacking end of the first jacking rod with the center of the core outlet mold. The adverse effect on this part of extruded core glass by oxygen or other impurities in air during the extrusion out of the core outlets can be avoided. The defects on the core glass surface and the cladding glass surface can be effectively removed, and the purity and quality of the core component in the obtained fiber preform can be improved.