CONFIGURATION: PLANO/CONVEX
DIAMETER TOLERANCE: +/- 0.25mm
CENTER THICKNESS: 3.10mm +/- 0.20mm
EDGE THICKNESS: 2.14mm REF.
EDGE BEVEL: 0.127mm/0.254mm X 45deg, 2 PLACES.
SPHERICAL RADIUS: 25.935mm +/- 0.25mm CONVEX
CENTERING ERROR: 3 ARC MINUTES MAXIMUM.
CLEAR APERTURE: CENTRAL 12.60mm MINIMUM DIAMETER.
SURFACE FINISH: 60-40 OR BETTER, 2 FACES.
SURFACE FIGURE: PLANO: POWER: 2 FRINGES MAXIMUM
IRREG: 1 FRINGE MAXIMUM
SPH.RAD: POWER: SEE RAD.TOLERANCE
IRREG: 1 FRINGE MAXIMUM
MATERIAL TYPE/QUALITY: SCHOTT BK-7 GLASS, GRADE A,
FINE ANNEALED.
COATING: ANTIREFLECTIVE COATED FOR 0.25% MAXIMUM
REFLECTANCE PER SURFACE AT 1.45 MICRONS
WITH A NORMAL INCIDENCE ANGLE, APPLIED
TO BOTH FACES.