公开(公告)号：US20190174092A1

公开(公告)日：2019-06-06

申请号：US16266208

申请日：2019-02-04

Applicant: STMicroelectronics Ltd

Inventor： Gilad ADLER ,  Sason SOURANI

IPC: H04N7/01 ,  G09G3/02 ,  H04N9/31 ,  G02B26/10

CPC classification number: H04N7/0127 ,  G02B26/0833 ,  G02B26/101 ,  G02B26/105 ,  G09G3/02 ,  G09G2310/0224 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3164 ,  H04N9/3188

Abstract: A projector includes a first laser source projecting a first laser beam, a second laser source projecting a second laser beam at an angle with respect to the first laser beam, and a mirror reflecting the first and second laser beams. Circuitry controls the mirror to simultaneously reflect the first and second laser beams in a first scan pattern to form a first image having a number of scan lines greater than two times a horizontal resonance frequency of the mirror divided by a desired frame rate of the first image. The first laser beam forms a first angle of incidence with the mirror and the second laser beam forms a second angle of incidence with the mirror, the second angle of incidence being equal to the first angle of incidence summed with the angle of the second laser beam with respect to the first laser beam.

公开(公告)号：US20190155018A1

公开(公告)日：2019-05-23

申请号：US16257333

申请日：2019-01-25

Applicant: STMicroelectronics Ltd

Inventor： Sason SOURANI

IPC: G02B26/08 ,  H02P25/032 ,  G09G3/34

Abstract: A method for controlling operation of a MEMS mirror includes steps for: generating activation pulses for operating the MEMS mirror and generating a window activation signal for current detection, with the window activation signal overlapping with an end of an activation pulse. The method also includes detecting current through a stator or a rotor of the MEMS mirror during the window activation signal and terminating a current activation pulse and the window activation signal in response to detecting a change in the direction of the current through the stator or the rotor of the MEMS mirror during the window activation signal.