| 摘要 |
PROBLEM TO BE SOLVED: To adjust the right/left angle of a sub-mirror supported free to oscillate against the main mirror independently of the main mirror right/left angle adjustment. SOLUTION: This mirror unit has a first mirror 18 which can move between the mirror-down position entering the photographing light path and the mirror-up position retreating from the photographing light path, a second mirror 19 which is pivotally supported by the shafts at the first and second oscillation support points 18c on the first mirror and can oscillate around those support points with respect to the first mirror, and an adjustment mechanism 30 to adjust the position of at least one of the above first or the second oscillation support points in the direction crossing the extending direction of the shafts. COPYRIGHT: (C)2009,JPO&INPIT
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