• Achromatic Doublet
• Meniscus lens
• Double Concave Lens
• Double Convex Lens
• Plano-Concave Lens
• Plano-Convex Lens

Achromatic Doublet

An achromat is a lens consisting of two cemented elements made of different materials, usually flint glass with crown glass. The achromat offers superior correction of spherical aberration in monochromatic applications.
In addition to higher image quality, additional advantages of the cemented achromat include: simplified mounting since it becomes one unit, smaller light loss resulted from fewer surfaces, less stray light due to reduced reflections.

Specifications
Material: ...................................According to your design
Diameter Tolarence: ....................................+0.0, -0.1mm
tc Tolerance: ..................................................± 0.1 mm
Clear Aperture: ......................................................>85%
Surface Quality: .....................................................40-20
Flatness: ......................................................N=4, △N=1
Centration: ..................................................±3 arc secs
Size (φ): ..................................3.5mm to 80mm or larger