| 摘要 |
The present invention relates to a beam projector. The beam projector includes: an image irradiating unit including an optical lens and irradiating an image through the optical lens with the intensity of a certain light; a human body sensor sensing, at certain time intervals, whether or not a person is within a certain range formed based on an optic angle of the optical lens; and a control unit controlling the intensity of the certain light when the person is sensed. |
