Plano-convex lens Ø 22.8 mm - pack of 10 made of optical glass, ground and polished in various magnifications from 12.0 to 27.0 diopters

Size: Ø 22.8 mm
Optical power: 12 dioptres
Focal length: 83 mm
Rim thickness: 2.0 mm
Centre thickness: 3.4 mm
cylindrical rim 1 - 2.5 mm (pressed edge)

Size: Ø 22.8 mm
Optical power: 16 dioptres
Focal length: 62 mm
rim thickness: 1.5 mm
centre thickness: 3.5 mm
cylindrical rim 1 - 2.5 mm (pressed edge)

Size: Ø 22.8 mm
Optical power: 20 dioptres
Focal length: 50 mm
rim thickness: 1.66 mm
centre thickness: 4.0 mm
cylindrical rim 1 - 2.5 mm (pressed edge)

Size: Ø 22.8 mm
Optical power: 24 dioptres
Focal length: 42 mm
rim thickness: 1.4 mm
centre thickness: 4.7 mm
cylindrical rim 1 - 2.5 mm (pressed edge)

Size: Ø 22.8 mm
Optical power: 27 dioptres
Focal length: 37 mm
rim thickness: 1.3 mm
centre thickness: 4.9 mm
cylindrical rim 1 - 2.5 mm (pressed edge)

Tolerances:

from 40 mm Ø the size tolerances are subject to the deviations from the nominal dimension that the raw glass compacts have.

These are:

for 40 - 75 mm Ø -0.3 mm
for 75 - 120 mm Ø -0.5 mm
over 120 mm Ø -0.8 - 0.9 mm