Title:
ACCESSORY MOUNTABLE TO LENS BARREL
Document Type and Number:
Japanese Patent JP2017219819
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an accessory that is excellent in a torque sensing or click sensing upon mounting/demounting, and is mountable to a lens barrel.SOLUTION: An accessory, which allows a bayonet mechanism to be mounted to a lens barrel, has: an annular member; and a bayonet ring that is made up of a resin member jointed to the annular member. In the bayonet ring, a bayonet pawl is molded in an inner peripheral face, and a click part is molded in a range where the bayonet pawl is molded. A stopper part is molded at one end of the range where the bayonet pawl is molded, and the click part is shaped into a cantilever beam has an inclination with respect to the inner peripheral face of the bayonet ring on a plane surface vertical to an optical axis. A rear face support part is molded that heads for a radiation direction centering around the optical axis, and a step part is molded that heads for the optical axis.SELECTED DRAWING: Figure 1
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Inventors:
TAKESAWA HIDEYUKI
Application Number:
JP2016116660A
Publication Date:
December 14, 2017
Filing Date:
June 10, 2016
Export Citation:
Assignee:
SIGMA CORP
International Classes:
G03B11/04; G03B17/56