US 12,149,045 B2
Light source with integrated monitor photodetector and diffuser
Hao Chen, Sunnyvale, CA (US)
Assigned to II-VI DELAWARE, INC., Wilmington, DE (US)
Filed by II-VI Delaware, Inc., Wilmington, DE (US)
Filed on Mar. 2, 2023, as Appl. No. 18/177,294.
Application 18/177,294 is a continuation of application No. 16/870,542, filed on May 8, 2020, granted, now 11,631,962.
Claims priority of provisional application 62/847,086, filed on May 13, 2019.
Prior Publication US 2023/0208098 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01S 5/026 (2006.01); H01S 5/183 (2006.01); H01S 5/42 (2006.01)
CPC H01S 5/0264 (2013.01) [H01S 5/18305 (2013.01); H01S 5/18361 (2013.01); H01S 5/18391 (2013.01); H01S 5/423 (2013.01)] 24 Claims
OG exemplary drawing
 
11. A light source system, comprising:
a plurality of light generators arranged in a two-dimensional distribution on a first surface of a substrate, the light generators arranged in at least one column in a first dimension and arranged in a plurality of rows in a second dimension;
a diffuser on a second surface of the substrate that is opposite the first surface;
a plurality of pairs of monitor photodetectors, each arranged at opposing ends of the at least one column in the first dimension, the monitor photodetectors being configured to receive optical signals emitted by the light generators and reflected by the diffuser; and
a controller operably coupled with the light generators and the plurality of pairs of monitor photodetectors, configured to terminate operation of one or more of the plurality of light generators when a characteristic of the reflected optical signal received by at least one of the monitor photodetectors deviates from a predetermined value for the characteristic.