公开(公告)号：US20230092956A1

公开(公告)日：2023-03-23

申请号：US17979363

申请日：2022-11-02

Applicant: STMicroelectronics LTD ,  STMicroelectronics S.r.l.

Inventor： Alex DOMNITS ,  Elan ROTH ,  Davide TERZI ,  Luca MOLINARI ,  Marco BOSCHI

IPC: G03B21/14 ,  G03B21/20 ,  G01J1/02 ,  G01J1/44 ,  G03B21/00

Abstract: A scanning laser projector includes an optical module with a housing defined by a top surface, a bottom surface, and sidewalls extending between the top surface and bottom surface to define an interior compartment within the housing. A given one of the sidewalls has an exit window defined therein. A first light detector is positioned at an interior surface of the given one of the sidewalls about a periphery of the exit window. A second light detector positioned at the interior surface of the given one of the sidewalls about the periphery of the exit window and on a different side thereof than the first light detector.

公开(公告)号：US20230090636A1

公开(公告)日：2023-03-23

申请号：US17479345

申请日：2021-09-20

Applicant: STMicroelectronics LTD ,  STMicroelectronics S.r.l.

Inventor： Alex DOMNITS ,  Elan ROTH ,  Davide TERZI ,  Luca MOLINARI ,  Marco BOSCHI

IPC: G03B21/14 ,  G03B21/00 ,  G03B21/20 ,  G01J1/02 ,  G01J1/44

Abstract: A scanning laser projector includes an optical module and projection engine. The optical module includes a laser generator outputting a laser beam, and a movable mirror scanning the laser beam across an exit window defined through the housing in a scanning pattern wider than the exit window such that the laser beam is directed through the exit window in a projection pattern that is smaller than and within the scanning pattern. A first light detector is positioned about a periphery of the exit window such that as the movable mirror scans the laser beam in the scan pattern, at a point in the scan pattern where the laser beam is scanned across an interior of the housing and not through the exit window, the laser beam impinges upon the first light detector. The projection engine adjusts driving of the movable mirror based upon output from the first light detector.

公开(公告)号：US20220140571A1

公开(公告)日：2022-05-05

申请号：US17083548

申请日：2020-10-29

Applicant: STMicroelectronics Ltd

Inventor： Alex DOMNITS

IPC: H01S5/40 ,  H01S5/022 ,  H01S5/00 ,  G02B27/01

Abstract: A compact optical package includes an RGB laser unit containing red, green, and blue laser diodes within a single package, with three lenses adjacent the RGB laser unit to collimate red, green, and blue laser light emitted by the red, green, and blue laser diodes. A beam combiner combines the red, green, and blue laser light into a single RGB laser beam and also outputs a lower power feedback beam. The compact optical package also includes a movable mirror apparatus, and a fixed folding mirror upon which the single RGB laser beam output by the beam splitter impinges and reflects the single RGB laser beam toward the movable mirror apparatus. The movable mirror apparatus directs the single RGB laser beam through an exit window and to scan the single RGB laser beam in a scan pattern to form at least one desired image on a target.

公开(公告)号：US20220137400A1

公开(公告)日：2022-05-05

申请号：US17509823

申请日：2021-10-25

Applicant: STMicroelectronics LTD

Inventor： Alex DOMNITS ,  Shlomy ERLICH

IPC: G02B26/10 ,  G02B27/01

Abstract: An optical package includes a beam combiner that combines laser light from a laser unit into a single laser beam, a movable mirror apparatus, and a fixed folding mirror which reflects the single laser beam toward the movable mirror apparatus. Beam equalizer optics cause increase of a slow axis divergence rate of the single laser beam such that its slow axis divergence rate is equal to its fast axis divergence rate. The movable mirror apparatus directs the single laser beam through an exit window. The beam equalizer optics include at least one negative spherical lens shaped such that a slow axis divergence rate of incident light is increased but a fast axis divergence rate of incident light is unaltered.