US 11,982,928 B2
Scanning laser projector system utilizing photodiodes inside scan area but outside of projection area for feedback
Alex Domnits, Gedera (IL); Elan Roth, Ramat Hasharon (IL); Davide Terzi, Zanica (IT); Luca Molinari, Piacenza (IT); and Marco Boschi, Lissone (IT)
Assigned to STMicroelectronics LTD, Netanya (IL); and STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed by STMicroelectronics LTD, Netanya (IL); and STMicroelectronics S.r.l., Agrate Brianza (IT)
Filed on Nov. 2, 2022, as Appl. No. 17/979,363.
Application 17/979,363 is a continuation of application No. 17/479,345, filed on Sep. 20, 2021, granted, now 11,774,834.
Prior Publication US 2023/0092956 A1, Mar. 23, 2023
Int. Cl. G03B 21/14 (2006.01); G01J 1/02 (2006.01); G01J 1/44 (2006.01); G03B 21/00 (2006.01); G03B 21/20 (2006.01)
CPC G03B 21/142 (2013.01) [G01J 1/0238 (2013.01); G01J 1/44 (2013.01); G03B 21/008 (2013.01); G03B 21/2033 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A scanning laser projector, comprising:
an optical module, comprising:
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;
wherein a given one of the sidewalls has an exit window defined therein;
a first light detector positioned at an interior surface of the given one of the sidewalls about a periphery of the exit window; and
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.