凹透镜通光口径在线精测仪  

A delicate measuring instrument for clear aperture of concave lens

作　　者：张杰[1] 刘炜进[2] 萧泽新[1] 黎泉[1] 

机构地区：[1]桂林电子科技大学光机电一体化研究所,广西桂林541004 [2]贵阳新天光电科技有限公司,贵州贵阳550000

出　　处：《红外与激光工程》2008年第S1期67-70,共4页Infrared and Laser Engineering

摘　　要：部分凹透镜的凹面由于设计和工艺的要求,需要磨出一个垂直于光轴的平面,往往该平面与通光口径重合,一般精度要求不严,所以传统的磨边机没有在线检测通光口径的功能。而对于通光口径要求严格的镜片,在线检测非常必要。为解决这一实际问题研发了专用检测仪器。先对凹透镜通光口径上边缘成像,再微调手轮,使得分化板刻度线对准上边缘,把此点定为零点,然后调动手轮,移动工作台,使得分化板与通光口径下边缘对齐,其经过的距离就是凹透镜的通光口径。这个距离通过固定在移动工作台上的光栅进行测量,从而实现了光栅精密测量和光学成像的巧妙结合,创新性的实现了小视场对大距离的测量。Due to design and processes requirements, some concave lens require being processed a plane which is perpendicular to the optical axis on the side of concave surface. The plane often concides with the clear aperture and does not need high precision. For this reason the conventional edge smoothing machine does not have the fuction to measure the clear aperture on line. This kind of online measurement will be quite necessary for the production of some lens which require high precision on the clear aperture. T...

关 键 词：在线精测 通光口径 光栅 四细分电路 

分 类 号：TH74[机械工程—光学工程]