Abstract: Provided is a cup holder including: a cylindrical body, which has inner sides or both inner sides and outer sides formed of a material for absorbing a beverage or preventing a flow of the beverage and into which an outer circumferential surface of a cup is inserted; and a contamination prevention panel extending from a predetermined portion of an upper side of the body to an opened end of the cup or a height corresponding to a coupling portion of a cup lid mounted on the opened end and absorbing the beverage leaking through a contact portion between the opened end and the coupling portion corresponding to a drinking portion or preventing a flow of the beverage.

Abstract: A focusing state measuring apparatus for measuring a focusing state of a working apparatus with respect to a target object so as to perform work includes: a base plate installed in the working apparatus performing work on the target object and spaced apart from the target object; a first line beam generation unit provided on one side of the base plate and configured to irradiate a first line beam toward the target object; and a second line beam generation unit provided on one side of the base plate so as to be spaced apart from the first line beam generation unit in a first direction and configured to irradiate a second line beam toward the target object. The focusing state of the working apparatus with respect to the target object is determined according to states of the first line beam and the second line beam.