| 摘要 |
Binoculars including a pair of lens barrels, each lens barrel having an optical system, a relative movement between the lens barrels causing the lens barrels to relatively displace, traveling between a closed state and an operational state in which eye spacing adjustment is enabled, a barrier that is moved between an optical system protective position with the lens barrels in the closed state and a retracted position with the lens barrels in the operational state, and a barrier control member, mounted on the lens barrels which moves the barrier from the optical system protective position to the retracted position in response to the displacement of the lens barrels from the closed state to the operational state.
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