CAJ | 학술논문

为了能精确得到被测物体的几何参数，设计了一种采集物体图像的双远心光学系统，并通过数字图像处理技术对物体尺寸进行测量。用 Zemax 对系统进行优化，分析了系统的像差和传递函数，所设计系统的工作距离大于74 mm，物方视场直径达到80 mm，畸变小于0．11％，CCD全视场190 lp／mm 处传递函数大于0．3。分析了光学系统的放大倍率稳定性和测量误差，并对小零件进行了测量，测量误差在允许的范围内，符合测量要求。
위료능정학득도피측물체적궤하삼수，설계료일충채집물체도상적쌍원심광학계통，병통과수자도상처리기술대물체척촌진행측량。용 Zemax 대계통진행우화，분석료계통적상차화전체함수，소설계계통적공작거리대우74 mm，물방시장직경체도80 mm，기변소우0．11％，CCD전시장190 lp／mm 처전체함수대우0．3。분석료광학계통적방대배솔은정성화측량오차，병대소령건진행료측량，측량오차재윤허적범위내，부합측량요구。
In order to accurately get the geometric parameters of an object,we designed a bilateral telecentric optical system to collect images of the object and measured the size of object by digital image processing techniques.We used Zemax to optimize the system,analyzed the aberration of the image and the transfer function of the system.The system had a long working distance which was greater than 74 mm.The field-of-view was 80 mm.The largest distortion was less than 0.11 percent and MTF was larger than 0.3 at 190 lp/mm for full field region of the CCD sensor.We analyzed the stability of the magnification and measurement deviation,and measured the small parts.The deviation was in the required range.