| 摘要 |
PROBLEM TO BE SOLVED: To provide a relay lens system whose lens can have its focus easily adjusted while prevented from gravitationally falling and which can be made small-sized on the whole and inexpensive. SOLUTION: The relay lens system fitted between a microscope main body and an electronic imaging device is equipped with at least one relay lens 33 which relays an image formed through the objective of a microscope, an internal frame 32 holding the relay lens 33, an external frame 31 which houses the internal frame 32 movably along an optical axis, a groove part 50 which is formed on the outer circumference of the internal frame 32 along the outer circumference, a rotation member 40 which is freely rotatably held on the external frame 31, and an eccentric pin which is formed deviating from the axis of rotation of the rotation member and engaged with the groove part to convert the rotational motion of the rotation member into linear motion along the optical axis of the internal frame, and a resistance member which gives resistance for rotation prevention to the rotation member 40. COPYRIGHT: (C)2005,JPO&NCIPI
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