Optical round windows,optical square window,optical windows

Specification of our optical windows as follow:
*Material: Bk7 or other materials
*Length tolerance:+/-0.01
*Width tolerance:+/-0.01
*Center thickness tolerance:0.005mm
*Surface quality:80-50~10-5
*Surface flatness<λ~λ/20
*Parallelism<=1min~2sec
*Clear Apenture:80%~100%