Plano-Concave Spherical Lens

Composed of a plane and a concave spherical surface, it has a negative focal length and negative spherical deviation, which can diverge the collimated incident light and form only a virtual image seen through the lens. Often used to expand beams, increase system length, and counteract aberrations of other lenses in the system.

Product introduction

Meniscus lenses are divided into positive meniscus and negative meniscus lenses. One side of the meniscus lens is convex and the other side is concave. It can be a converging lens or a diverging lens, which is determined by the refractive index and the radius of curvature. Widely used in camera systems, projection systems, imaging systems, optical viewfinders, and laser measurement systems.

Material	CDGM optical glass, CORNING, SCHOTT, HOYA, OHARA, and other specified materials
Outer diameter	φ4-φ80mm
Surface Figure	≤1（0.5）
Machining Tolerance	Center thickness tolerance: ±0.05mm, outer diameter tolerance: ±0.05mm, sagittal height tolerance: ±0.05mm
Eccentricity	1 arc minute
Surface Quality	40/20