US 11,838,994 B2
Determination device and heating cooking apparatus
Munesato Kumagai, Sakai (JP); and Masahiro Ikehara, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed on Feb. 25, 2021, as Appl. No. 17/185,230.
Claims priority of application No. 2020-042033 (JP), filed on Mar. 11, 2020.
Prior Publication US 2021/0289587 A1, Sep. 16, 2021
Int. Cl. A47J 37/08 (2006.01); H05B 1/02 (2006.01); G01N 21/55 (2014.01); A47J 36/32 (2006.01); G01N 33/10 (2006.01)
CPC H05B 1/0261 (2013.01) [A47J 36/32 (2013.01); A47J 37/085 (2013.01); G01N 21/55 (2013.01); G01N 33/10 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A determination device comprising:
a light receiving unit configured to receive reflected light from a foodstuff being cooked; and
a surface condition determination unit configured to determine a surface condition of the foodstuff being cooked on the basis of an intensity ratio of the reflected light received by the light receiving unit,
wherein the intensity ratio of the reflected light comprises:
a first intensity value of the reflect light from the foodstuff before a heating process; and
a second intensity value of the reflected light from the foodstuff after the heating process,
wherein the intensity ratio is determined by the second intensity value over the first intensity value.