タイトルまたは説明

Waveplates (retardation plates or phase shifters) are made from materials which exhibit birefringence. The velocites of the extraordinary and ordinary rays through the birefringent material varies inversely with their refractive indices.
Specification of our waveplate as follow:
*Dimension Tolerance:+/0.*0mm to *0.*1/0.*1mm
*ThicknessTolerance:+/0.*0mmto +/0.**5mm
*Surface Quality:***0 to **5
*Flatness: at **3nm lambda lambda/*0per *5mm
*Clear Aperture:*0% **0%
*Parallelism(arc min):3min 3sec
*Crystals directional precision:5min to *0sec
*Bevel:0.3+/0.*0mm* *5degree
*No Bevel
*Coating R<0.2% 
*Other wavelengths within the range of ******0nm are also available upon request.