Material: optical glass K9, quartz, fused silica, BK7， sapphire
Size: φ 5mm~260mm
Dimensional tolerance: -0.02~0.1mm
Center thickness tolerance: -0.02~0.1mm
Curvature radius tolerance:<0.001mm
Surface finish: 10/5~60/40
Surface type: λ/8 to λ/2
Aperture:>90%
Inverted edge: ＜ 0.3mm * 45 °
Coating: Coating with anti reflective film
If you have different requirements, please consult customer service.
A biconvex lens has a positive focal length and can also focus parallel light beams. Since that both the front and rear surfaces of the biconvex lens are convex spherical surfaces with equal curvature radii, in applications where the distances between objects and images are equal or approximately equal, the biconvex lens can significantly reduce spherical aberration, as well as improve coma and distortion. When the conjugate ratio is between 5:1 and 1:5, the aberration induced by the biconvex lens is minimized.