H-K9L Bi Convex Lens

The H-K9L Bi convex lens has excellent transmittance from visible to near infrared (350-2000nm) and is commonly used in limited imaging applications.H-K9L(N-BK7) is a commonly used optical glass for the preparation of high-quality optical elements. When the additional advantages of UV melting quartz (good transmittance and low thermal expansion coefficient in the UV band) are not needed, H-K9L is generally selected.Double convex lenses are suitable for objects and images on either side of the lens, and the ratio of the image distance to the object distance (conjugate ratio) is between 0.2 and 5.Customer can Choose a variety of coatings.

Specifications

Structure: Bi Convex Lens

Material: Optical Glass,BK7,H-K9L,UVFS,Germanium,Silicon,CaF2,MgF2,ZnSe,ZnS,Sapphire.

Dia.0.35-700mm

Dia.Tol.+0.00/-0.01mm

Surface Quality:10-5

Surface Irregulatiry:λ/10 @632.8nm or customer design

Thickness tolerance:+0/-0.02mm

Clear Aperture>90% of diameter

Chamfer:0.05-0.5mm

Centeration<30 arcsec

Coating:Single Mag2, Multiple Layers AR Coating

             A: 350-650nm
             B: 650-1050nm
             C: 1050-1585nm
             D: Customer Design

Bk7 Standard Double Convex Lens