Ricoh/Pentax phase detection AF patent

Ricoh Pentax phase detection AF patent 2 Ricoh Pentax phase detection AF patent
Ricoh filed a new patent in Japan for a phase detection AF that could be used to ensure precise AF during video/live view.

Via Egami

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  • Kunzite

    From the patent text (automatic translation):

    “The proposal of the image sensor which mounts a micro lens for every repeating unit of the color filter of a Bayer array is made as a method of reducing color moire, without using for a Patent document 3 the optical low pass filter in the image sensor which has a color filter of a Bayer array.

    […]

    An object of the present invention is to provide the imaging device and image sensor which can reduce color moire, while outputting both the picture signal for imaging, and the picture signal for phase difference detection in view of the above-mentioned problem using the image sensor for imaging an object. ”

    “By the present invention, even if it does not provide separately a pixel an object for imaging, and for phase difference detection, a picture signal for imaging and a picture signal for phase difference detection are acquired, and moreover, a photoelectric conversion part in a picture element unit comprises several different filters.Therefore, even if it does not perform a complicated image processing in particular, reduction of color moire is possible.”

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