PhotonChina manufactures double convex lenses out of BK7 material, featuring identical convex surfaces on both sides and positive focal lengths, capable of forming real and virtual images. They offer precision grade lenses with specific tolerances and specifications, such as focal length, diameter tolerance, surface quality, and coating options. The design wavelength for these lenses is 546.1nm with a refractive index of 1.518721.

1. PPHHOOTTOONNCCHHIINNAA
www.photonchinaa.com
PPHHOOTTOONNCCHHIINNAA
www.photonchinaa.com
The Double Convex Lenses are made of BK7 material, which are manufactured with
an identical convex surface on both sides of the lens. The Double Convex lenses have
positive focal lengths and form both real and virtual images. Photonchina also provides
precision grade Double Convex lenses with tighter manufacturing tolerances
Specifications:
Material: BK7 or other glass materials
Design Wavelength: 546.1nm, n=1.518721
Diameter Tolerance: +0.0/-0.1mm
Paraxial Focal Length: ±2%
Centration: 3 arc minutes
Surface Figure : /4 @ 632.8 nm
Surface Quality: 60/40
Clear Aperture: >80%
Bevel: <0.25mm X 45°
Coating: Upon customer’s request