US 12,238,265 B2
Optical filter for improved multispectral imaging performance in stereo camera
Jeremiah D. Henley, Fair Oaks, CA (US)
Assigned to Cilag GmbH International, Zug (CH)
Filed by Cilag GmbH International, Zug (CH)
Filed on Dec. 12, 2022, as Appl. No. 18/064,846.
Prior Publication US 2024/0195948 A1, Jun. 13, 2024
Int. Cl. H04N 13/257 (2018.01); H04N 13/239 (2018.01); H04N 13/25 (2018.01); H04N 13/254 (2018.01); H04N 23/11 (2023.01); H04N 23/16 (2023.01); H04N 23/50 (2023.01)
CPC H04N 13/257 (2018.05) [H04N 13/239 (2018.05); H04N 13/25 (2018.05); H04N 13/254 (2018.05); H04N 23/11 (2023.01); H04N 23/16 (2023.01); H04N 23/555 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a stereo camera comprising a first image sensor and a second image sensor;
a first optical filter that prevents the first image sensor from accumulating near infrared electromagnetic radiation; and
an emitter comprising a plurality of sources of electromagnetic radiation, wherein the plurality of sources comprises:
a visible source that emits electromagnetic radiation within a visible waveband of the electromagnetic spectrum; and
a near infrared source that emits electromagnetic radiation within a near infrared waveband of the electromagnetic spectrum; and
a controller in communication with the first image sensor, the second image sensor, and the emitter;
wherein the first image sensor detects visible electromagnetic radiation and reads out a visible data frame in response to the emitter cycling on the visible source;
wherein the second image sensor detects near infrared electromagnetic radiation and reads out a near infrared data frame in response to the emitter cycling on the near infrared source;
wherein the controller is configured to instruct the emitter to independently cycle at least a portion of the plurality of sources on and off according to a pulse cycle; and
wherein the controller instructs the emitter to cycle on at least one of the plurality of sources of electromagnetic radiation when at least one of the first image sensor or the second image sensor is undergoing a readout sequence.