| 摘要 |
An optical apparatus, such as a lens barrel, includes a first unit holding member and a second unit holding member arranged to hold a first optical unit and a second optical unit, respectively, a driven member arranged to be driven to move in an optical axis direction, and a cam member of a plate-like shape having a cam part, the cam member being capable of taking a first state in which the cam member rotates around a predetermined axis, without moving in the optical axis direction, according to movement of the driven member in the optical axis direction, and a second state, different from the first state, in which the cam member moves in the optical axis direction according to movement of the driven member in the optical axis direction, wherein, when taking each of the first state and the second state, the cam member drives the first unit holding member and the second unit holding member in the optical axis direction. More specifically, a normal zooming function is performed in the first state. In the second state, the two optical units are drawn inward to bring the lens barrel into a standby state for photo-taking.
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