Detection apparatus and detection system
A detection apparatus includes a sensor, a detection circuit, and a light source configured to emit light in a first color, a second color, and a third color. The detection circuit acquires a first output, a second output, and a third output that are outputs of the sensor corresponding to a period when the light in the first color is emitted, a period when the light in the second color is emitted, and a period when the light in the third color is emitted, respectively. The detection circuit adjusts at least two or more of the first, second, and third outputs based on adjustment coefficients derived so as to equalize a fourth output, a fifth output, and a sixth output. The fourth, fifth, and sixth outputs are outputs obtained when the sensor is directly irradiated with the light in the first, second, and third colors from the light source, respectively.
1 . A detection apparatus comprising:
a sensor that includes a photodiode to detect light and is configured to produce an output corresponding to a degree of the detected light;
a detection circuit configured to acquire the output of the sensor; and
a light source configured to switchably emit light in a first color, light in a second color, and light in a third color, wherein
the detection circuit is configured to individually acquire a first output, a second output, and a third output,
the first output is an output of the sensor corresponding to a period when the light in the first color is emitted,
the second output is an output of the sensor corresponding to a period when the light in the second color is emitted,
the third output is an output of the sensor corresponding to a period when the light in the third color is emitted,
the detection circuit is configured to adjust at least two or more of the first output, the second output, and the third output based on adjustment coefficients derived so as to equalize a fourth output, a fifth output, and a sixth output,
the fourth output is an output obtained when the sensor is directly irradiated with the light in the first color from the light source,
the fifth output is an output obtained when the sensor is directly irradiated with the light in the second color from the light source, and
the sixth output is an output obtained when the sensor is directly irradiated with the light in the third color from the light source.
2 . The detection apparatus according to claim 1 , comprising a sensor panel that comprises a detection area provided with a plurality of the sensors, wherein
the adjustment coefficients correspond to an average value of the outputs of the sensors, and
the detection circuit is configured to adjust the first output, the second output, and the third output.
3 . The detection apparatus according to claim 1 , comprising a sensor panel that comprises a detection area provided with a plurality of the sensors, wherein
the adjustment coefficients correspond to a luminance distribution of the light in the first color in the detection area when the fourth output is obtained, and
the detection circuit is configured to adjust the second output and the third output.
4 . The detection apparatus according to claim 1 , wherein
the first color is red,
the second color is green, and
the third color is blue.
5 . A detection system comprising a detection apparatus and an information processing device coupled to the detection apparatus, wherein
the detection apparatus comprises:
a sensor that includes a photodiode to detect light and is configured to produce an output corresponding to a degree of the detected light;
a detection circuit configured to acquire the output of the sensor; and
a light source configured to switchably emit light in a first color, light in a second color, and light in a third color, wherein
the detection circuit is configured to individually acquire a first output, a second output, and a third output, and transfer data corresponding to each of the outputs to the information processing device,
the first output is an output of the sensor corresponding to a period when the light in the first color is emitted,
the second output is an output of the sensor corresponding to a period when the light in the second color is emitted,
the third output is an output of the sensor corresponding to a period when the light in the third color is emitted,
the information processing device is configured to adjust the data corresponding to at least two or more of the first output, the second output, and the third output based on adjustment coefficients derived so as to equalize a fourth output, a fifth output, and a sixth output,
the fourth output is an output obtained when the sensor is directly irradiated with the light in the first color from the light source,
the fifth output is an output obtained when the sensor is directly irradiated with the light in the second color from the light source, and
the sixth output is an output obtained when the sensor is directly irradiated with the light in the third color from the light source.