Meniscus lens with biconcave and biconvex hyperbolic design, adjustable positive and negative focal lengths, empowering imaging and laser systems.

The product parameters are as follows:

Material: H-K9

Dimensions: Diameter 23*4.5mm

Dimensional tolerance: -0.035/-0.085mm

Center thickness tolerance: ±0.1mm

Surface finish: 60/40

Optical specifications:

1. 400-700nm double-sided AR Rave <0.5%

2. Irregularity: N=3, local irregularity=0.3

3. Side frosting: 3.2um

4. Parallelism: 5′

5. Radius of curvature: +R23.74 & -R55.76

6. Edge thickness: 2.0mm

Manufacturing and processing according to the drawing

Application fields: Optical instruments, camera lenses, magnifiers, etc.;

The curve is as follows: