US 12,231,750 B2
Imaging apparatus
Shinichi Shimotsu, Saitama (JP); Masahiko Sugimoto, Saitama (JP); Tetsuya Fujikawa, Saitama (JP); and Toshihiro Aoi, Saitama (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Aug. 11, 2022, as Appl. No. 17/885,553.
Application 17/885,553 is a continuation of application No. PCT/JP2021/002087, filed on Jan. 21, 2021.
Claims priority of application No. 2020-028626 (JP), filed on Feb. 21, 2020.
Prior Publication US 2022/0385839 A1, Dec. 1, 2022
Int. Cl. H04N 23/11 (2023.01); G01J 5/00 (2022.01); G01J 5/48 (2022.01); G02B 5/20 (2006.01); G02B 26/00 (2006.01); G03B 11/00 (2021.01)
CPC H04N 23/11 (2023.01) [G01J 5/48 (2013.01); G02B 5/208 (2013.01); G02B 26/007 (2013.01); G03B 11/00 (2013.01); G01J 2005/0077 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An imaging apparatus, comprising:
an imaging optical system that has a light transmission characteristic of transmitting near-infrared light in a near-infrared light wavelength range including 1550 nm;
an imaging sensor that has sensitivity to heat radiation from a subject and outputs an imaging signal including information regarding a heat radiation image resulting from the heat radiation by imaging the near-infrared light transmitted through the imaging optical system;
a light source that emits the near-infrared light;
a light source drive controller that applies temporal modulation to an intensity or a frequency of the near-infrared light emitted from the light source by driving of the light source; and
an image processor that generates first image data representing a subject image according to the near-infrared light, and second image data representing the heat radiation, based on a direct-current component and a modulated component of the imaging signal,
wherein the image processor generates the first image data based on the modulated component and generates the second image data based on the direct-current component.