Plano concave Lenses

Plano concave Lenses have one concave surface. It has negative focal length. It is often used to expand light or to increase focal length in existing systems.

Plano-Concave Lens Specifications:

Material:

BK7, Fused Silica, SF10, CaF2, Sapphire .etc.

Paraxial Focal Length Tolerance:

±2%

Dimension Tolerance:

±0.2(General). ±0.05(High Precision)

Centration:

<3 arc min

IRR:

λ/4@633nm（General),λ/10@633nm(High Precision)

Clear Aperture:

>80%(Small Size), >95%(Large Size)

Surface Figure

<1.5λ@633nm（General),<λ/4@633nm(High Precision)

Surface Quality:

60/40（General),10/5(High Precision)

Bevel:

<0.25mm

Coating:

Uncoated, AR,PR, HR, etc.

Lenses have the functions of converging, diverging, and shaping beams in the optical path. Planar convex lenses (PCX)/biconvex lenses (DCX) converge the light rays; PCV/DCV lenses diverge light rays. Optical Glass Lenses are optical components that are transparent to certain light spectrums, and oriented for either collecting or diverging light. The functions of optical lenses encompass laser processing, image magnification, fiber collimation, etc. and the applications of Optical Glass Lenses are extensive, ranging from life science, and medical diagnoses, to defense and industrial production.

With over ten years of experience, Shandong Yanggu Constant Crystal Optics is capable of providing high-precision Lenses for high-end applications.