Specifications
Material: Crystal Quartz Dimension: +0.0, -0.2mm Wavefront Distortion : < l /8@632.8 Retardation tolerance : < l /500 Parallelism : <1 arc second Surface Quality: 20/10 scratches and dig AR coating : R<0.2% at central wavelength Standard Wave: quarter-wave ( l /4), half-wave ( l /2)

Ordering Information:

Note:Other sizes and coating are available upon request.