Patent ID: 11937788
Assignee: FUJIFILM CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 3:
4. An endoscope system comprising:
a light source that emits first illumination light and second illumination light having an emission spectrum different from an emission spectrum of the first illumination light;
a light source controller that automatically switches the first illumination light and the second illumination light and emits each of the first illumination light and the second illumination light for a light emission period of at least one or more frames;
an image pickup sensor that includes specific pixels having sensitivity to the first illumination light and the second illumination light; and
a processor configured to function as:
an image acquisition unit that acquires first image signals obtained in a case where an image of biological tissue illuminated with the first illumination light is picked up by the image pickup sensor, and second image signals obtained in a case where an image of biological tissue illuminated with the second illumination light is picked up by the image pickup sensor,

wherein the first illumination light includes violet light, green light, and red light and the second illumination light includes blue light, green light, and red light,
the first image signals include first specific color signals output from the specific pixels, and the second image signals include second specific color signals output from the specific pixels, and

the light source controller causes the first illumination light and the second illumination light to be emitted under specific light amount conditions, so that a signal value of the first specific color signal for specific biological tissue corresponding to at least specific biological tissue, which is a part of the biological tissue, among the first specific color signals is equal to a signal value of the second specific color signal for specific biological tissue corresponding to at least the specific biological tissue among the second specific color signals.