US 12,029,537 B2
Polarized photoplethysmography (PPG) biosensors, arrays and systems
Radwanul Hasan Siddique, Monrovia, CA (US); and Haeri Park Hanania, San Gabriel, CA (US)
Assigned to Samsung Electronics Co., Ltd, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Nov. 10, 2022, as Appl. No. 17/984,887.
Claims priority of provisional application 63/400,213, filed on Aug. 23, 2022.
Prior Publication US 2024/0065566 A1, Feb. 29, 2024
Int. Cl. A61B 5/024 (2006.01); G02B 27/28 (2006.01); G02B 27/30 (2006.01); G02B 27/42 (2006.01)
CPC A61B 5/02427 (2013.01) [G02B 27/286 (2013.01); G02B 27/288 (2013.01); A61B 2562/0233 (2013.01); A61B 2562/046 (2013.01); G02B 27/30 (2013.01); G02B 27/4205 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device, comprising a light source,
wherein the light source comprises:
an electromagnetic spectral emission source configured to output an electromagnetic spectral emission,
a polarization optical element configured to polarize the electromagnetic spectral emission output from the electromagnetic spectral emission source,
a collimation optical element configured to focus or collimate the electromagnetic spectral emission output from the electromagnetic spectral emission source or output from the polarization optical element into a narrow or tight beam to reduce diffusion, and
a diffractive optical element configured to separate the electromagnetic spectral emission output from the electromagnetic spectral emission source, output from the polarization optical element, or output from the collimation optical element into a predetermined arrangement.