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Plane convex lens is one of the most widely used lenses to meet different high-precision optical components and optical lenses for industrial research, such as defense, military, precision medical instruments, etc. The principle of a flat convex lens is to aggregate parallel light or to convert a point light source into parallel light. The flat convex lens is composed of a plane and a spout, the collimated beam should be incident to the surface of the lens when focusing, and the collimation point light source should be incident to the plane of the lens, the beam will consort in the rear focus, or the point light source can be converted to a collimated beam. Our company has manufactured flat convex lens has been sold to many countries and regions around the world, and in the international optical community to obtain a good reputation.

Material: K9, BK7, FS, UVFS, CaF₂, ZnSe

Diameter:3mm-200mm±0.05mm

Center Thickness Tolerance:±0.05mm

Lens Alignment Error:≤3min

Surface Accuracy:λ/ 10 @

Surface Quality:40/20. 60/40. 80/60

Effective Caliber: 90%

Example with BK7 material：These N-BK7 Plano-Convex
lenses are available uncoated or with one of five antireflection
coatings (-A, -AB, -B, -C, or -D), which reduces the amount of light
reflected from each surface of the lens (see the Selection Guide table
below for coating option). Since approximately 4% of the incident light
is reflected at each surface of an uncoated substrate, the application
of an AR coating improves transmission, which is important in low-light
applications, and prevents the undesirable effects (e.g., ghost images)
associated with multiple reflections. Having optics that are AR coated
on both surfaces is particularly desirable for applications utilizing
multiple optical elements. Please see the Graphs tab for additional
coating information.

N-BK7 Plano-Convex Lens Selection Guide

Coating name

wavelength band

Uncoated

Uncoated

A Coating

350nm-700nm

AB Coating

400nm-1100nm

B Coating

650nm-1050nm

C Coating

1050-1700nm

D Coating

1650nm-3000nm

Other series products：

Convex lens  Concave lens  Meniscus lens  Achromatic lens  Cylindrical lens  Ball lens  Rod lens

https://www.hplenses.com/ball-lens/