immersion apochromat浸没复消色差透镜
apochromat lens复消色差透镜
apochromat t复消色差透镜
semi-apochromat[光] 半复消色差透镜;近复消色差透镜;半复消色差透镜;半复消色差物镜
apochromat t lens复消色差透镜
apochromat apochromat lens复消色差透镜
N（名词） a lens, consisting of three or more elements of different types of glass, that is designed to bring light of three colours to the same focal point, thus reducing its chromatic aberration 复消色差透镜 → compare achromat