2 items with this tag.
C34-5 A machine which is an example that uses optical imaging to produce a facsimile of an optical image, as well as, in general provide human control over those facets.
C34-5 A machine and optical instrument composed of the following parts: The optics Two optical lens, under human control to control the focal point, and focal length, the other of which provides human control of the extended object representing the scene in space A diaphragm to control the light int...