apochromatic process lens
apochromatic lens
全色消差透镜
全消色差透镜
复消色差透镜
复消色差镜头
消三色差透镜
复消色差镜
aplanatic magnifying lens
Aplanatic Double-convex Aspherical Waveguide Lens
Antiaircraft Command Lens
anterior membrane of intraocular lens
anterior fibrinous membrane of intraocular lens
Anterior chamber phakic intraocular lens