ما هي العدسة عن بعد?

تم تصميم العدسة عن بُعد لتصحيح المنظر الناجم عن عدسة الرؤية التقليدية للآلة. لن يغير تكبير الصورة ضمن نطاق معين من مسافة الكائن, وهو تطبيق مهم في الحالات التي لا يكون فيها الكائن على نفس السطح. Due to its unique parallel optical path design,telecentric lens has been favored by machine vision applications which have strict requirements for distortion.

The main application of telecentric lens is precision measurements. In a precision measurement system, there are certain restrictive factors for general lenses, such as distortion of the image, the error caused by the selection of the angle of view, the uncertainty of the boundary caused by the interference of inappropriate light source etc.,which will affect the accuracy of the measurement. But with telecentric lens, we are able to reduce or even eliminate such problems. Thus telecentric lens has been widely used and has become a crucial component in precision measurement system.