Patent ID: 8514201

Claim:
An image pickup device, comprising: an image pickup panel provided with a plurality of first photoreceptors, a plurality of second photoreceptors, and an irradiation light source that emits light including detection light for detecting a proximity object, wavelengths of the detection light lying in a predetermined wavelength region; and an image processing section performing an image processing on signals which are captured by the image pickup panel through image-picking up the proximity object, thereby acquiring object information including one or more of position, shape, or size of the proximity object, wherein the first photoreceptors have a photosensitive characteristic different from a photosensitive characteristic of the second photoreceptors, for photosensitive wavelengths such that the first photoreceptors have a higher sensitivity in a first wavelength range relative to a sensitivity of the second photoreceptors in the first wavelength range and the second photoreceptors have a higher sensitivity in a second wavelength range relative to a sensitivity of the first photoreceptors in the second wavelength range, a photosensitive wavelength region of the first photoreceptors includes the wavelength region of the detection light, a photosensitivity of the second photoreceptors is lower than a photosensitivity of the first photoreceptors, in the wavelength region of the detection light, and the image processing section acquires the object information by processing the signals coming from the first and second photoreceptors and further wherein detection signals generated by the second photoreceptors are used to identify erroneous detection signals associated with contact movement across the image pickup panel in order to eliminate the erroneous detection signals.