LOTDX001(Optical Lens)

Description

Double-convex lens, a special kind of positive lens, also called biconvex lens, is used to converge incident light to a spot (focal point) on the axis. It can form both real images and virtual images(for magnifier) on the two sides. Symmetric-convex lenses have two convex surfaces with identical radii. It is most suitable for where the object and image are on opposite sides of the lens and the ratio of the image and object distances(conjugate ratios) is between 0.2 to 5. The materials can be BK7, Fused Cilica, sapphire and CaF2 etc., for different applications.Bi-convex lenses are usually used in many devices of beam expanders, . Projection optics systems, optical viewers etc. Antireflection or other coatings can be ordered for some special applications Specifications: 1. Material:Fused cilica, BK7 Grade A or equivalent optical glasses 2. Design Wavalength:**6.1nm 3. Diameter Tolerance:±0.1mm, ±0.*5mm for Dia.≥*5mm 4. Paraxial Focus Length:±2% 5. Centration:<3 arc minutes 6. Clear Aperture:>*5% 7.Surface *:&*;&*;/*@********************Quality :****0 scratch and dig *****:Antireflection coatings or NIR coatings *0.Bevel :A slight protective bevel, such as 0.*5mm×*5°