Adjusted focus holding mechanism for binocular
AssigneeKakakua Koki Kabushiki Kaisha
InventorMasashi Kato
Life of this patent
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Abstract
An adjusted-focus holding mechanism for a binocular having a rotatable focus adjustment turning wheel (1), including an engageable locking member (2) provided between an immovable member (13) and the turning wheel. When in an initial position, the turning wheel is prevented from rotating by locking engagement with the engageable locking member. The turning wheel is reversibly movable from its initial position in a direction other than the direction in which the turning wheel is rotatable to disengage the engageable locking member and the turning wheel for focus adjustment.
Claims9
In a binocular having a turning wheel adapted to rotate a rotary shaft, and an axially movable member that is moved along an axis in parallel to the binocular's optical axes by rotation of the rotary shaft, thereby to move an optical system of the binocular along one of said optical axes for achievement of a desired focused condition, the improvement comprising:
- an adjusted-focus holding mechanism comprising an engageable locking member engageable with said turning wheel so that said turning wheel in an initial position is prevented from rotating by locking engagement with said engageable locking member, wherein said turning wheel is movable from its initial position to cancel the locking of said turning wheel, thereby allowing rotation of said turning wheel for adjustment of the optical system focus, this adjusted focus being holdable by moving the turning wheel in the reverse direction to its initial position to re-engage said turning wheel with said locking member to lock said turning wheel against rotation.
Dependencies are inferred from the claim text.