3.1.1 Accessible emission
level. The magnitude of accessible laser or
collateral radiation as measured. Accessible laser or collateral radiation is
radiation to which human access is possible, as defined in paragraphs 3.1.9,
3.1.15, and 3.1.23.
3.1.2 Accessible Emission Limit
(AEL). The AEL is the maximum accessible emission
level within a particular class as set forth in ANSI Z136.1.
3.1.3 AEL For Class
1. The radiant power or energy of a laser under
consideration such that the Maximum Permissible Exposure limits as set forth
in ANSI Z136.I are not exceeded for any specified exposure duration under any
possible condition such as with optical viewing instruments.
3.1.4 Aperture. Any
opening in the protective housing, shielding, or other enclosure of a laser
product through which laser or collateral radiation is emitted, thereby
allowing human access to such radiation.
The decrease in the radiant flux of any optical radiation beam as it passes
through an absorbing and/or scattering medium.
Refers to unique experimental arrangements which are limited to laboratory use
to test feasibility.
3.1.7 Candela. Unit
of luminous intensity, 1 candela = 1 lumen/steradian (lm/sr).
installation. Any location where laser systems and
products are used which will be closed or opaque to unprotected personnel
during laser operations.
radiation. Radiation emitted by a laser product,
exceptthe operation of the product or any of its components. System indicator
lights would not normally be considered
sources of collateral radiation.
3.1.10 Continuous wave
(CW). The output of a laser which provides a
steady or continuous output power rather than a pulsed output. In this MIL-STD
a laser emitting with a continuous output for a period in excess of or equal
to 0.25 second.