Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
April 26, 2011
Patent Application Number
12691966
Date Filed
January 22, 2010
Patent Primary Examiner
Patent abstract
A monitoring lens device includes a focus ring that is provided in an outer circumferential portion of a fixed cylinder and a zoom ring that is provided in an outer circumferential portion of the focus ring. A screw hole that is engaged with a shaft portion of a lock knob is formed in the focus ring, and an opening portion (long groove) through which the lock knob passes is formed in the zoom ring. A spacer is attached to the lock knob and a convex portion of the spacer is fitted into the opening portion.
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