. "In one embodiment, the display panel 614 is a built-in liquid-crystal (LCD) panel. [0044] In alternate embodiments, light emission sources and optics may include sources other than LEDs such as incandescent light sources or white light sources which are tuned to emit radiation at appropriate wavelengths. [0045] In one embodiment of the invention, a miniature solenoid 616 for performing the occlusi" . . .