公开(公告)号：US3678281A

公开(公告)日：1972-07-18

申请号：US3678281D

申请日：1970-03-31

Applicant: SICK ERWIN FA

Inventor： GLEIXNER FRANZ

IPC: B23Q15/00 ,  B23Q35/128 ,  B23Q35/40 ,  H01J5/16

CPC classification number: B23Q35/128 ,  B23Q15/00 ,  B23Q35/40

Abstract: In a photoelectric sensing device a first lens is affixed to a machine at a distance equal to its focal length from an object under observation. A detector unit, including a second lens and a photoelectric detector in the focal point thereof is resiliently mounted on a machine, the second lens being aligned with the first lens. Thereby the object is imaged on the detector regardless of vibrations of the machine and, on the other hand, the detector unit is protected from such vibrations.

Abstract translation: 在光电感测装置中，第一透镜以与来自被观察物体的焦距相等的距离固定在机器上。 在其焦点上包括第二透镜和光电检测器的检测器单元弹性地安装在机器上，第二透镜与第一透镜对准。 因此，无论机器的振动如何，物体都被成像在检测器上，另一方面，检测器单元被保护免受这种振动。

公开(公告)号：US3629589A

公开(公告)日：1971-12-21

申请号：US2181670

申请日：1970-03-23

Applicant: SICK ERWIN FA

Inventor： GLEIXNER FRANZ ,  SCHREYER HEINZ

IPC: G01J1/30 ,  G01N21/25 ,  G01N21/53 ,  G01J1/32

CPC classification number: G01J1/30 ,  G01N21/255 ,  G01N21/256 ,  G01N21/534

Abstract: Before traversing the area in which conditions are to be measured, a portion of a modulated luminous measuring beam is branched off and directed to a photoelectric detector. A portion of a modulated luminous comparison beam also is branched off and sent to the detector. The strengths of the beams received by the detector are compared and used to control the intensity of one or both of the beam sources in a manner such that the ratio of intensities of the two sources is constant.