Angular subtense definition
Angular subtense means the apparent visual angle, a, as calculated from the source size and distance from the eye.
Angular subtense means the apparent visual angle, a, as calculated from the source size and distance from the eye. “Aperture” means an opening in the protective housing or other enclosure of a laser product, through which laser or collat- eral radiation is emitted, allowing human access to the radiation.
Angular subtense means the apparent visual angle, a, as calculated from the source size and distance from the eye. “Aperture” means an opening through which radiation can pass allowing human access to the radiation.