Abstract: The apparatus is designed to modify the quality of a beam of light while maximizing the amount of light directed along a desired trajectory. The light optimization device contains an aperture, a diffuser, a modifying substrate, and a mirror. The aperture enables light to travel through the mirror. The diffuser splits a single beam of light traveling towards the modifying substrate into multiple beams of light, which are traveling towards the modifying substrate. The modifying substrate becomes excited when struck by light, and then produces light with desired characteristics. The mirror reflects light that is generated by, or reflected off of, the modifying substrate, and traveling along suboptimal trajectories. As such, the reflected light is redirected towards the modifying substrate.

Abstract: A laser lighting device provides a broad range illumination for an area, such as a smoke filled space, a hallway or an underwater environment with certain turbidity. This lighting device contains a laser diode as a light source and a diffraction grating that is able to diffract an input laser light beam generated from the laser diode into a plurality of output laser light beams with the cross section of the plurality of output laser light beams forming a pattern comprising a plurality of light spots. In addition, this pattern may be in a donut shape. That is to say, the power of a light spot formed by a zero order light beam is lower than other light spots' power. Further, this laser lighting device is used to provide lighting with depth perception and forward visibility.