公开(公告)号：EP0388559A3

公开(公告)日：1991-01-09

申请号：EP89313056.7

申请日：1989-12-13

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Cain, Gary Lunn ,  Church, Gerald Henry ,  Sobottke, Mark Durward ,  Zalusky, James Thomas

IPC: G01B11/26 ,  G01S3/78

CPC classification number: G01S3/782 ,  G01B11/26 ,  G01C15/002

Abstract: Apparatus (100) operable in accordance with the method of the present invention for measuring the angle of incidence of a light beam or plane (108) relative to level comprises a photodetector array (102) for sensing the light and a level mirror (104) preferably comprising a pool of mercury. Optics (112, 114, 118, 120) are provided for transmitting the light to the photodetector array in alignment with the angle of incidence of the light (aligned light) and also after the light has been reflected from the mercury pool (reflected light). A shutter (106) is provided for separating aligned light from reflected light such that distinct signals representative of the two are generated by the photodetector array. The distinct signals are processed by up-counting and down-counting a counter circuit to determine the average centers of light spots representative of the aligned light and the reflected light and the distance between those average centers which is representative of the deviation of the light beam or plane (108) from level.

公开(公告)号：EP0388559A2

公开(公告)日：1990-09-26

申请号：EP89313056.7

申请日：1989-12-13

Applicant: SPECTRA-PHYSICS LASERPLANE, INC.

Inventor： Cain, Gary Lunn ,  Church, Gerald Henry ,  Sobottke, Mark Durward ,  Zalusky, James Thomas

IPC: G01B11/26 ,  G01S3/78

CPC classification number: G01S3/782 ,  G01B11/26 ,  G01C15/002

Abstract: Apparatus (100) operable in accordance with the method of the present invention for measuring the angle of incidence of a light beam or plane (108) relative to level comprises a photodetector array (102) for sensing the light and a level mirror (104) preferably comprising a pool of mercury. Optics (112, 114, 118, 120) are provided for transmitting the light to the photodetector array in alignment with the angle of incidence of the light (aligned light) and also after the light has been reflected from the mercury pool (reflected light). A shutter (106) is provided for separating aligned light from reflected light such that distinct signals representative of the two are generated by the photodetector array. The distinct signals are processed by up-counting and down-counting a counter circuit to determine the average centers of light spots representative of the aligned light and the reflected light and the distance between those average centers which is representative of the deviation of the light beam or plane (108) from level.

Abstract translation: 根据本发明的方法可操作的用于测量光束或平面（108）相对于水平面的入射角的装置（100）包括用于感测光的光电检测器阵列（102）和水平反射镜（104） 优选地包括一个汞池。 光学元件（112,114,118,120）被提供用于将光传送到与光（对准的光）的入射角对准的光检测器阵列，并且在光从汞池（反射光）反射之后， 。 提供了一个快门（106），用于将对准的光与反射光分离，使得表示两者的不同信号由光电检测器阵列产生。 通过对计数器电路进行递增计数和递减计数来处理不同的信号，以确定表示对准的光和反射光的光点的平均中心以及代表光束偏离的那些平均中心之间的距离 或平面（108）。