Patent ID: 11953708
Assignee: I-PRO CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A camera device, comprising:
a processor;
a sensor configured to detect illuminance of light from surroundings of the camera device;
a first filter configured to restrict a transverse wave component of incident light, the incident light having light of a plurality of different wavelength bands generated based on birefringence;
a third filter configured to restrict a wavelength band of the incident light in a visible region, and to transmit a wavelength band of the incident light in a near-infrared region;
a lens on which a vertical wave component of the incident light, transmitted through the first filter, or the incident light in the near-infrared region, transmitted through the third filter, is incident;
a second filter configured to restrict the vertical wave component of the incident light in a visible region among the vertical wave component of the incident light, transmitted through the lens; and
an imaging element configured to image a subject based on the vertical wave component of the incident light, transmitted through the second filter, in the near-infrared region,
wherein the first filter and the third filter are disposed on a front side of the lens, and the second filter is disposed on a rear side of the lens,
when the illuminance of light detected by the sensor is higher than a predetermined threshold value, the processor is configured to set an operation mode of the camera device to a daytime mode and to dispose the first filter on the front side of the lens, and
when the illuminance of light detected by the sensor is lower than the predetermined threshold value, the processor is configured to set the operation mode of the camera device to a nighttime mode and to dispose the third filter on the front side of the lens.