title: Standardization of the definition and measurement of the line length and fan angle of laser line generators.
abstract: Three different commonly used methods of measuring the length and fan angle of a light line or a light fan produced by a laser line generator were analyzed, tested, and compared. One measurement method is proposed as the standard method, and the resultant 1/e(2) intensity fan angle is proposed as the standard parameter to describe the line generator.
authors.forename: H
authors.initials: H
authors.lastname: Sun