US 11,788,966 B2
Imaging system
Yuichiro Ikenaga, Kanagawa (JP); Satoshi Nagae, Tokyo (JP); and Yuuichirou Kita, Aichi (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Filed by Sony Group Corporation, Tokyo (JP)
Filed on Dec. 20, 2021, as Appl. No. 17/555,515.
Application 17/555,515 is a continuation of application No. 16/324,675, granted, now 11,221,296, previously published as PCT/JP2017/024582, filed on Jul. 5, 2017.
Claims priority of application No. 2016-161544 (JP), filed on Aug. 19, 2016.
Prior Publication US 2022/0120689 A1, Apr. 21, 2022
Int. Cl. G01N 21/64 (2006.01); G02B 23/24 (2006.01); A61B 90/20 (2016.01); G02B 21/00 (2006.01); A61B 1/00 (2006.01); A61B 90/00 (2016.01); A61B 1/04 (2006.01); A61B 5/00 (2006.01)
CPC G01N 21/6458 (2013.01) [A61B 1/00 (2013.01); A61B 1/043 (2013.01); A61B 5/0071 (2013.01); A61B 90/20 (2016.02); A61B 90/361 (2016.02); A61B 90/37 (2016.02); G01N 21/64 (2013.01); G02B 21/00 (2013.01); G02B 23/24 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An imaging system comprising:
a light source configured to emit light including a component in at least a first excitation wavelength band to excite a first fluorescence material emitting a first fluorescence belonging to a near-infrared wavelength band, and to emit light including a component in at least a second excitation wavelength band to excite a second fluorescence material emitting a second fluorescence belonging to a visible wavelength band;
a first image sensor configured to receive light including a component of the wavelength band of the first fluorescence and output a first imaging signal;
a second image sensor configured to receive light including a component of the wavelength band of the second fluorescence and output a second imaging signal;
an optical element configured to separate light including the first fluorescence in the near-infrared wavelength band into a first optical branch and light including the second fluorescence in the visible wavelength band into a second optical branch;
a first pass filter in the first optical branch configured to transmit light having a near-infrared wavelength band and block light having a wavelength equal to or less than a predetermined wavelength belonging the visible wavelength band; and
a second pass filter in the second optical branch to transmit light in the visible wavelength band that includes red light and block light in the visible wavelength band that includes green and blue light.