maximum permissible exposure


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maximum permissible exposure

The highest power or energy density (in W/cm2 or J/cm2) of a light source that has a negligible risk for causing damage to an exposed surface of the body. It is measured at the cornea or skin for a given wavelength and exposure time.

The MPE is specified as power or energy per unit surface based on the power or energy that can pass through a fully open pupil (0.39 cm2) for visible and near-infrared wavelengths.
References in periodicals archive ?
These facilities have not completed the necessary testing to determine whether their facilities exceed the maximum permissible exposure limits or have not yet taken the necessary steps to cure exposure problems once they were discovered.
If, based on that assessment, the FCC's maximum permissible exposure ("MPE") limits for humans are exceeded, and the facilities cannot be brought into compliance, the applicant or licensee installing or operating an Antenna must prepare an environmental assessment ("EA") and submit that EA to the FCC.
Trichloroethylene (TCE), a colorless, combustible degreasing agent used in the automotive and other industries, is known to have contaminated ground water and water supplies in many parts of the United States in low levels, and in some instances, levels have exceeded maximum permissible exposures.

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