Description

These lenses are primarily used for imaging at close to 1:1, illustrates their function. The convex surfaces of approximately equal to the radius of curvature. The lenses have very low optical aberration at magnifications from 5 to 0.2. At these magnifications, coma, distortion, and chromatic aberrations are minimal. Because both convex surfaces contribute to the magnifying power, these lenses are available with useful for collecting and refocusing light from a small beams in applications where the length of an optical train spot quality, you should use two lenses; one to collimate the diverging beam, and the second to focus the collimated beam to a small spot. Specifications Material: BK7, Silica, CaF2, Silicon, etc. Diameter Tolerance: *0.0, *0.1 mm tc tolerance: +/*0.1mm Clear Aperture: >*5% Surface Quality: ****0 Flatness: N=2, âï¿&frac*2;³N=0.5 Centration: +/*3 arc mins Size (Ïï¿&frac*2;): 3 to **0mm or larger Please contact Antek Optics sales for detail.