Spherical lens
LENSE TYPE
Plano-Concave Lens
BK7/ Fused Silica/ Sapphire CaF2/other optical glass
Double-Concave Lens
Positive Meniscus Lens
Negative Meniscus Lens
Achiromtic Lens,
Specification:
GENERAL HIGH PRECISION
Material N-BK7, CDGM H-K9L, Fused silica, CaF2, Sapphire
Design wavelength 546.07nm
Design index (bk7) 1.51680 for BK7, 1.45846 for Fused Silica
Diameter tolerance +0.0, 0.15mm +0.0, 0.05mm
Paraxial focal length ±2% ±0.5%
Centration