公开(公告)号：US06809812B2

公开(公告)日：2004-10-26

申请号：US09877773

申请日：2001-06-08

Applicant: Huiqu Yin

Inventor： Huiqu Yin

IPC: G01J344

CPC classification number: G01J3/44 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0227

Abstract: For identifying black plastics effectively and rapidly with a laser-powered identification probe, it is desirable to maintain full laser power while reducing the power density. This is achieved by providing the probe with a moving lens that disperses the 0.5 mm laser spot over a larger area typically of about 5 mm in diameter. The entire signal from the larger (5 mm) diameter is collected at the same spot in the fiber bundle within the probe that leads to a Raman or other spectral analyzer. There are no other modifications required for the rest of the system as the moving lens does not affect the collection efficiency of the characteristic signal from the sample.

Abstract translation: 为了用激光供电的识别探针有效快速地识别黑色塑料，希望在降低功率密度的同时保持全激光功率。 这通过为探针提供将0.5mm激光光斑分散在通常为大约5mm直径的较大区域的移动透镜来实现。 来自较大（5mm）直径的整个信号被收集在探针内的纤维束中的相同点处，其通向拉曼或其它光谱分析仪。 由于移动镜头不影响来自样品的特征信号的收集效率，因此系统的其余部分不需要其他修改。