CONFIGURATION: DISC, PLANO/CONVEX
DIAMETER: 14.10mm +/- 0.10mm
CENTER THICKNESS: 3.94mm REF.
EDGE THICKNESS: 1.525mm +/- 0.125mm
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
SPHERICAL RADIUS: 11.50mm +/- 0.10mm
CENTERING ERROR: 2 ARC MINUTES MAXIMUM.
CLEAR APERTURE: CENTRAL 90% OF DIAMETER.
SURFACE FINISH: 60-40 OR BETTER, 2 FACES.
SURFACE FIGURE: PLANO: POWER: 2.5 WAVES MAXIMUM
IRREG: 1/2 WAVE MAXIMUM
SPH.RAD: POWER: SEE F.L. TOLERANCE
IRREG: 1/2 WAVE MAXIMUM
FOCAL LENGTH: 22.17mm @ 546.1nm REF.
MATERIAL TYPE/QUALITY: BK-7 CROWN GLASS, FINE
ANNEALED, GRADE A.
COATING: NONE, UNCOATED SUBSTRATE