公开(公告)号：WO0063660A2

公开(公告)日：2000-10-26

申请号：PCT/US0010794

申请日：2000-04-21

Applicant: SARNOFF CORP

Inventor： SHEN ZILAN ,  PARK HYOUN ,  GRAYDON KEITH

IPC: G01N15/00 ,  G01N15/02 ,  G01P3/68 ,  G01P5/18 ,  G01J

CPC classification number: G01P5/18 ,  G01N15/0205 ,  G01N2015/0026 ,  G01N2015/0294 ,  G01P3/68

Abstract: An apparatus (34) for measuring the velocity of a droplet a liquid includes a laser (36) for generating a beam of light into the shape of a thin sheet. A beam divider (40) is along the first path (38) of the light for dividing the beam into two separate beams which extends along second (42) and third (44) paths. The second (42) and third (44) paths lie in a common plane. Along the second (42) and third (44) paths is a device (60) for projecting a droplet of liquid across the second (42) and third paths (44) so that the droplet passes through both of the divided beams. At least one photodetector (52, 54) is along both the second (42) and third paths (44) to receive the divided beams and provide an electrical signal corresponding to the beams. A beam divider (40) which is used to divide the beam into two beams includes a body (62) of an optically transparent material having at least two flat front surfaces (68, 70) which are at an angle with respect to each other to form a V having a sharp corner, and at least two flat back surfaces (74, 76) each of which is spaced from and parallel to a separate front surface.

Abstract translation: 用于测量液滴液体的速度的装置（34）包括用于将光束产生成薄片形状的激光器（36）。 光束分隔器（40）沿着光的第一路径（38），用于将光束分成两个沿着第二（42）和第三（44）路径延伸的分离的光束。 第二（42）和第三（44）路径位于公共平面中。 沿第二（42）和第三（44）路径是用于将液滴溅射穿过第二通道（42）和第三路径（44）的装置（60），使得液滴穿过两个分开的横梁。 至少一个光电检测器（52,54）沿着第二（42）和第三路径（44）沿着接收分割的光束并且提供对应于光束的电信号。 用于将光束分成两束的光束分隔器（40）包括具有至少两个平坦前表面（68,70）的光学透明材料的主体（62），所述平坦前表面相对于彼此成一角度至 形成具有锐角的V，以及至少两个平的后表面（74,76），每个后表面与单独的前表面间隔开并平行。

公开(公告)号：WO0063660A9

公开(公告)日：2001-07-26

申请号：PCT/US0010794

申请日：2000-04-21

Applicant: SARNOFF CORP

Inventor： SHEN ZILAN ,  PARK HYOUN ,  GRAYDON KEITH

IPC: G01N15/00 ,  G01N15/02 ,  G01P3/68 ,  G01P5/18 ,  G01D15/18

CPC classification number: G01P5/18 ,  G01N15/0205 ,  G01N2015/0026 ,  G01N2015/0294 ,  G01P3/68

Abstract: An apparatus (34) for measuring the velocity of a droplet a liquid includes a laser (36) for generating a beam of light into the shape of a thin sheet. A beam divider (40) is along the first path (38) of the light for dividing the beam into two separate beams which extends along second (42) and third (44) paths. The second (42) and third (44) paths lie in a common plane. Along the second (42) and third (44) paths is a device (60) for projecting a droplet of liquid across the second (42) and third paths (44) so that the droplet passes through both of the divided beams. At least one photodetector (52, 54) is along both the second (42) and third paths (44) to receive the divided beams and provide an electrical signal corresponding to the beams. A beam divider (40) which is used to divide the beam into two beams includes a body (62) of an optically transparent material having at least two flat front surfaces (68, 70) which are at an angle with respect to each other to form a V having a sharp corner, and at least two flat back surfaces (74, 76) each of which is spaced from and parallel to a separate front surface.

Abstract translation: 一种用于测量液滴速度的装置（34）包括用于将光束产生为薄片形状的激光器（36）。 分束器（40）沿着光的第一路径（38），用于将光束分成沿第二（42）和第三（44）路径延伸的两个分开的光束。 第二（42）和第三（44）路径位于一个共同的平面内。 沿第二路径（42）和第三路径（44）的路径是用于穿过第二路径（42）和第三路径（44）投射液滴的装置（60），使得液滴穿过两个分开的光束。 至少一个光电探测器（52,54）沿着第二路径（42）和第三路径（44）两者，以接收分离的光束并提供对应于光束的电信号。 用于将光束分成两个光束的光束分割器（40）包括光学透明材料的主体（62），该主体具有至少两个相对于彼此成角度的平坦前表面（68,70） 形成具有尖角的V，以及至少两个平坦的后表面（74,76），每个后表面与分开的前表面间隔开并平行。