Abstract: A buffer arrangement for providing pixel information in a Lissajous scanning projection system is provided. The projection system includes a memory, a MEMS mirror, a projection unit, and a data unit. The memory includes a projection buffer and a shadow buffer. An incoming stream of pixel information scanned from the MEMS mirror is written to the shadow buffer. The incoming stream of pixel information is forwarded to the projection buffer. The projection buffer forwards the incoming stream of pixel information to the projection unit. The projection unit projects the incoming stream of pixel information based on the Lissajous pattern through a mirror projector trajectory. The shadow buffer and the projection buffer operate at different frequencies.

Abstract: A deflection device for Lissajous scanning is provided. The deflection device includes a frame and a mirror. The mirror is movably arranged in a recess in the frame by means of a suspension mount including one or more springs. The mirror may be configured to swing back and forth about each of two or three axes with a respective eigenfrequency for reflecting incoming light at different angles to form a two-dimensional Lissajous pattern. The deflection device may include a driving device configured to excite swing motion of the mirror about each of the two or three axes at or near the respective eigenfrequency. Each of the one or more springs has a shape of a path segment along a circumference of the mirror together covering more than 360 degrees. An arrangement of the one or more springs provides a compact suspension for the mirror and larger tilt angles.