PROJECTION TYPE DISPLAY APPARATUS

摘要

A projection type display apparatus is provided that is safe even when a person looks directly into a laser beam. A laser operation control unit sets the output power of at least one laser source so that intensity A (mW/mm2) of the laser beam on at least one spatial light modulation element satisfies relationship of A<686xB2 when numerical aperture B on image side of an illumination optics system is set.