| 摘要 |
An optical apparatuses having a cartridge chamber lid, includes a motor, a sun gear which is driven by the motor, a planet gear meshing with the sun gear and arranged to move from a first position to a second position while rotating when the sun gear rotates in a first direction, and to move from the second position to the first position while rotating when the sun gear rotates in a second direction opposite to the first direction, and a lock mechanism which unlocks the cartridge chamber lid when the planet gear moves from the first position to the second position, and which maintains locking the cartridge chamber lid when the planet gear moves from the second position to the first position.
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