A device of Objective lenses of Engravings and reading to encode and retrieve information in a member of me died.

摘要

Set of Objective lenses and reading recorded to encode and retrieve information in a Memory.The whole, usable with different Wavelengths, is composed of a negative meniscus Lens with the Concave Surface facing the object Side, a negative Lens as Achromatic Doublet, a positive meniscus Lens with a Convex Surface on the side of the object And one negative Lens, located in this order by proximity to the object. S