xiamen dnd industrial co ltd
optical lenses, Partial Reflection Coating, Right Angle Prisms, Plano-Concave Cylindrical Lenses, Fused Sillica Windows, Manufacturer and Supplier - China
Positive meniscus lenses is convex-concave lens thicker at the center than at the edges. They are used to minimize spherical aberration. When used in combination with another lens, it?s will shorten the focal length, and increase the NA of system. N... - Update: 2011-12-30