Optical Mirror
* Material:Bk7 A glass,Quartz,CaF2 or crystals.* dimension tolerance:+/-0.1mm* center thickness tolerance:+/-0.2mm* Surface quality:60-40 stratch/dig* Surface flatness:Wavelength/10inch@632.8nm* parallelism:1 Are min* clear Apenture:90%

Jollystar Photoelectric Science & Technology Co., Ltd.