公开(公告)号：US20120086932A1

公开(公告)日：2012-04-12

申请号：US13253484

申请日：2011-10-05

申请人： Seung Woo KIM ,  Joo Hyung Lee ,  Young Jin Kim

发明人： Seung Woo KIM ,  Joo Hyung Lee ,  Young Jin Kim

IPC分类号： G01C3/08

CPC分类号： G01S7/4865 ,  G01B11/026 ,  G01S7/4811 ,  G01S17/10

摘要： Disclosed is a high resolution time-of-flight distance measurement device based on a femtosecond laser, including a femtosecond laser light source, a polarization beam splitter, a balanced optical cross-correlator in which second harmonic pulses are generated using reference light and measurement light, wherein the second harmonic pulse that was primarily generated is incident on a first photodetector and the second harmonic pulse that was secondarily generated is incident on a second photodetector, so that a difference in intensity of the second harmonic pulses is output, thus resolving the time interval of the pulse laser, a controller for controlling the repetition rate of the femtosecond laser, and a converter for measuring the repetition rate of the femtosecond laser controlled so that the pulses uniformly overlap by means of the controller, using a frequency counter traceable to a time/frequency standard, so that a measured value is converted into distance information.

摘要翻译： 公开了一种基于飞秒激光器的高分辨率飞行时间距离测量装置，包括飞秒激光光源，偏振分束器，平衡光交叉相关器，其中使用参考光和测量光产生二次谐波脉冲 其中主要产生的二次谐波脉冲入射到第一光电检测器上，并且二次产生的二次谐波脉冲入射到第二光电检测器上，从而输出二次谐波脉冲的强度差，从而解决时间 脉冲激光器的间隔，用于控制飞秒激光器的重复率的控制器，以及用于测量飞秒激光器的重复率的转换器，其被控制，使得脉冲通过控制器均匀地重叠，使用可追溯到 时间/频率标准，使得测量值被转换成距离信息。

公开(公告)号：US20240255074A1

公开(公告)日：2024-08-01

申请号：US18527447

申请日：2023-12-04

申请人： Seung Woo KIM

发明人： Seung Woo KIM

IPC分类号： F16L3/01

CPC分类号： F16L3/012 ,  E03C1/302

摘要： A flexible hose reel for a drain pipe, the flexible hose reel includes: a cylindrical basket comprising a support rod disposed in a central portion thereof, wherein the basket is fixedly fitted into a rectangular frame in which a structure is assembled; and a winding shaft provided on a lower surface of the rotating disk covering an upper portion of the basket, the winding shaft being coupled to the support rod of the basket such that a flexible hose is wound on or unwound from the winding shaft through a withdrawal hole provided in a corner of the basket.