ANSI C78.379-2015 pdf free download
ANSI C78.379-2015 pdf free download.Electric Lamps — Classification of the Beam Patterns of Reflector Lamps. 1 Scope, Purpose, and Application 1.1 SCOPE This standard describes a system for classification of beam patterns and beam angles of reflector lamps. Also a method of describing light output is defined. Reflector lamps are considered to be those lamps having a reflective coating applied...