We supply optical mirror,reflector with coating. optical mirror is a smooth,highly polished surface covered a thin coating. Mirror is usually a thin coating of metal or dielectrics. Flat mirror,concave mirror,convex mirror,hot mirror,cold mirror,laser mirror,dielectric mirror,metal coated hr mirror,hyperbolical mirror etc. . specifications of our mirror as follow: *material:bk7 a glass, quartz, caf2,crystals or others*parallelism:1 arc min*clear apenture:90%*squares/rectangles:1mm to110mm+/-0. 2mm *center thickness tolerance:+/-0. 1mm *surface quality:60-40 to 20/10 scratch/dig*surface flatness:lambda/10 at 632. 8nm*parallelism:1 arc min