免费发布信息
Concave Cylindrical - Fused SilicaMaterial:Fused SilicaDesign Wavelength:632.8nm, n=1.457018Diameter Tolerance:+0.0/-0.1mmParaxial Focal Length:±2%Centration:3 arc minutesSurface Figure :l/4 @ 633 nmSurface Quality:60/40Clear Aperture:>80%Bevel:<0.25mm X 45°Coating:l/4 wave MgF2@550nmRetangular cylind...
产品特点The Plano Concave Lenses are made from BK7 material, which are manufactured with one Concave surface and one plane surface. These lenses have negative focal lengths. These lenses diverge collimated incident light. They form virtual images which are seen through the lens. They are often used to expand ...
|