| 摘要 |
A relay set ( 4, 4 ') for the optical system of a rigid endoscope, the optical system including an objective ( 1 ) at the distal end, an ocular ( 5 ) at the proximal end and between them a relay lens system consisting of several relay sets ( 2, 3, 4 ), the relay set ( 4, 4 ') consisting of two half sets ( 4.1, 4.2 ) having the same lens units ( 11.1, 12.1, 13.1; 11.2, 12.2 13.2 ) arranged symmetrically with respect to the center ( 10 ) of the set ( 4, 4 '), each half set ( 4.1, 4.2 ) consisting of two positive power lens units ( 11.1, 13.1; 11.2, 13.2 ) at the ends and one negative power lens unit ( 12.1; 12.2 ) in the middle, is characterized in that each half set is of Triplet design.
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