Bi-Convex Lenses are the best choice where the object and image are at equal or near equal distance from the lens. When the object and image distance are equal (1:1 magnification), not only is spherical aberration minimized, but also coma, distortion, and chromatic aberration are identically canceled due to the symmetry. Bi-convex lenses function similarly to plano-convex lenses in that they have a positive focal length, and focus parallel rays of light to a point. Both surfaces are spherical and have the same radius of curvature, thereby minimizing spherical aberration. As a guideline, bi-convex lenses perform within minimum aberration at conjugate ratios between 5:1 and 1:5. Outside this magnification range, plano-convex lenses are usually more suitable.
Material for choices :
BK7, fused silica&quartz, and others demanded.
|Place of Origin:||Jiangsu，China|
|Brand Name:||DG Optics|
|Material:||Fused silica, Quartz, BK7, and others|
|Surface Quality:||40/20 ,20/10|
|Coating：||MgF2, VIS 0°, VIS-NIR, NIR II, VIS-EXT|
|Tolerance||± 0.001mm Minimum|
Supply Ability: 6000000 Piece/Pieces per Month
Inner packing——-special protective packing for optical products.
Outer packing——carton, Shock absorption material and bubble wrap
Transportation—–International Air Transport (UPS DHL FEDEX SF…)