Patent ID: 9664900
Date: 2017-05-30
CPC Classifications: G02B,G03B,H04N

Claim:
1. A projection apparatus, comprising: a micro-electro-mechanical system (MEMS) mirror module configured to drive an image beam to scan along a first direction and a second direction on an imaging region; and a control unit electrically connected to the MEMS mirror module and configured to output a driving signal with a corresponding pulse width according to a projection position of the image beam in the second direction of the imaging region, wherein the driving signal is configured to control the MEMS mirror module to drive a scan opening angle of the image beam along the first direction of the imaging region, wherein when the projection position of the image beam in the second direction moves from a first edge position to a second edge position through a center position in the second direction of the imaging region, the pulse width of the driving signal only decreases from the first edge position to the center position and only increases from the center position to the second edge position.