Opto-Mechatronic System Design of the LED Projector by Using Brushless DC Motor

This paper will propose a possible mechanism design of LED projector. The opto-mechatronic system will be studied. The analytical scheme of optical path will be described in detail. As compared with the other light sources, laser light usually has many advantages: higher brightness, higher directionality, pure monochromatism, and higher coherence. However, the LED device does not have these advantages. Therefore, this paper will develop the mechanism to project LED light to target screen. Biconvex lens and hexahedral mirror are used to focus the LED light into one spot on the target screen. Brushless DC Motor is used to rotate the mirror to provide the required projection.