Invention Grant
US3874798A Method and apparatus for contactless measuring of an object using separate opto-electrical devices for respective borders of object
失效
使用用于物体的相应边界的单独光电装置对物体进行非接触式测量的方法和装置
- Patent Title: Method and apparatus for contactless measuring of an object using separate opto-electrical devices for respective borders of object
- Patent Title (中): 使用用于物体的相应边界的单独光电装置对物体进行非接触式测量的方法和装置
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Application No.: US36764873Application Date: 1973-06-06
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Publication No.: US3874798APublication Date: 1975-04-01
- Inventor: ANTONSSON LEIF-GORAN , REDLUND JOEL KARL GOSTA , ROSENGREN KARL YNGVE KJELL
- Applicant: AGA AB
- Assignee: Aga Ab
- Current Assignee: Aga Ab
- Priority: SE869272 1972-07-03
- Main IPC: G01B11/04
- IPC: G01B11/04 ; G01B11/08 ; G01B11/10
Abstract:
A method and apparatus for contactless measuring of a dimension of movable objects wherein opposite borders of an image of a movable object are projected in one dimension upon a respective one of a pair of opto-electrical devices, each of the optoelectrical devices being comprised of an array of light sensitive elements. The opto-electrical devices are scanned successively at a predetermined repetition rate, the scanning being performed with a simultaneous start from that end of each opto-electrical device which is covered or shadowed by the image of the object. The signals from the illuminated and shadowed-out light sensitive elements of the opto-electrical devices are then detected and the dimension of the object is then determined.
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