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

Claim 5:
6. A camera device, comprising:
a processor;
a sensor configured to detect illuminance of light from surroundings of the camera device;
a second filter configured to restrict a vertical wave component of incident light in a visible region, the incident light having light of a plurality of different wavelength bands and being generated based on birefringence;
a lens on which the incident light, transmitted through the second filter, is incident;
a first filter configured to restrict a transverse wave component of the incident light, transmitted through the lens;
a third filter configured to restrict a wavelength band of the incident light in the visible region, and to transmit a wavelength band of the incident light in the near-infrared region; and
an imaging element configured to image a subject based on a vertical wave component of the incident light in the near-infrared region, transmitted through one of the first filter and the third filter,
wherein the second filter is disposed on a front side of the lens, and the first filter and the third filter are 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 rear 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 rear side of the lens.