公开(公告)号：US3892961A

公开(公告)日：1975-07-01

申请号：US45255074

申请日：1974-03-19

Applicant: INTERMADOX A G

Inventor： BACHMANN HANS

IPC: G01R17/20 ,  G01J1/24 ,  G05B11/01 ,  H01L31/16 ,  G01J1/32 ,  H01L15/06

CPC classification number: G05B11/017 ,  G01J1/24

Abstract: The arrangement includes a light source and a photosensitive unit positioned to receive light from the light source and operative for generating an electrical output signal having a magnitude dependent upon the luminous flux received from the light source. A light-blocking arrangement, for example in the form of a film strip, is positioned intermediate the light source and the photosensitive unit, and is mounted for displacement relative to the photosensitive unit and light source in a predetermined direction along a predetermined path. The light transmittance of the light-blocking arrangement varies in said predetermined direction, so that as the light-blocking arrangement is displaced in said direction the luminous flux received by the photosensitive unit from the light source will vary accordingly. A compensating arrangement establishes a linear relationship between the displacement of the light-blocking arrangement and the magnitude of the light-dependent signal, by automatically varying the luminous flux emitted from the light source towards the photosensitive unit in dependence upon the position of the light-blocking arrangement.

Abstract translation: 该装置包括光源和感光单元，其定位成从光源接收光，并用于产生具有取决于从光源接收的光通量的幅度的电输出信号。 例如以薄膜条形式的遮光装置位于光源和感光单元之间，并且被安装成沿着预定路径沿着预定方向相对于感光单元和光源移位。 遮光装置的透光率在所述预定方向上变化，使得当光阻装置在所述方向上移位时，感光单元从光源接收的光通量将相应地变化。 补偿装置通过根据发光元件的位置自动地改变从光源发射到光敏单元的光通量，从而建立遮光装置的位移与光依赖信号的大小之间的线性关系。 阻塞安排。