GE Lamps User Manual
Page 86
GE LIGHTING - ENTERTAINMENT LIGHTING CATALOGUE
84
Typical Working Distance
For Multi-Mirror
®
and other reflector lamps and MARC
™
lamps, the Working Distance shown is the
distance from the front surface of the reflector rim to the film plane, in the optical system for which the
lamp was first designed. In most cases, it provides a uniform plane of light for the intended aperture.
Light Centre Length (LCL)
This dimension defines the location of the filament in relation to the lamp base. It is measured from the
geometric centre of the filament to a specified point on, or plane through, the base. Light Centre Length
is subject to manufacturing tolerances.
Maximum Overall Length (MOL)
This dimension includes the lamp bulb and all rigid parts of the base. Since
the listed lengths include maximum tolerances, actual lamps are generally slightly shorter.
GE S&S 2000 9/03/00 9/3/00 1:31 pm Page 86