Strip glued lens

Material: Optical Glass,Bk-7

Diameter: 5mm-200mm±0.1mm

Center Thickness Tolerance: ±0.05mm

Lens Alignment Error: ≤3min

Surface Accuracy: λ/ 8 @

Surface Quality: 60/40.40/20.80/60

Effective Caliber: 90%

Coating: 190-380 nm UV AR coating 400-1200 nm visible near-infrared AR coating (532 nm single-point AR coating, 532 + 1064 nm double-point AR coating, 808 single-point AR coating, 1064 single-point AR coating ) And the bandwidth anti-reflection film of this area.
Infrared anti-reflection film: 1560 nanometer anti-reflection film, 3-5 micron anti-reflection film, 8-12 and 7-14 micron anti-reflection film.

Medium and high reflection film: 1,355 nm / 532 nm / 635 nm / 808 nm / 1064 nm single point, double point,three point laser reflection film.

Achromatic Lens is a group of lenses that corrects the chromatic aberration of light at three wavelengths (blue, green, and red) . The shape is crescent (concave and CONVEX) , which is formed by gluing two lenses with different refractive index and dispersion. Originally made by Kavalan at the 1821(flat concave bonded to a Biconvex Lens) ; later improved by Grabe at the 1857(crescent) . Since then, multiple layers of achromatic lens have appeared.