Cur Achromatic Doubles pretia china utet

Achromatic Doublet Lenses pretia china est lens sementatur a duo componentes optique, positibue indics refractiva (crown) et negatis refraccium index (flint). Achromatic Doublet Lenses pretia China Achromatic Doublet Lenses dublet designae uti libertatem prohibetur utii Lens performans in lens unusque copulare contentant.