| 摘要 |
A symmetrical lens system for a copy camera comprising a three part system consisting of a first zoom lens (1), a field lens (2) which can include aperture, stop, filter and other optical elements, like illumination head and a transparent original, and a second zoom lens (3). The field lens (2) is arranged to project the aperture of the first zoom lens (1) upon the aperture of the second zoom lens (3). The lens system will preferably be of use for copy cameras. |
