求购一款1/2";、焦距115mm的常规光学镜头，具体规格要求如下：lens type: general lens (no need for telecentricity).operative distance: from 115 mmresolution: 300 dpi, nyquist frequency 95 lp/mm..efl=7.2fn=3.5dof= about 9.4optical distortion : less than 2%lens interface: c-mount有现成产品或可定制生产此镜头的厂家请与我方联系，谢谢。