Color solid-state image capturing apparatus and electronic information device
AssigneeSharp Kabushiki Kaisha
InventorTakashi Watanabe
Life of this patent
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Abstract
A color solid-state image capturing apparatus is provided, where a plurality of light receiving sections are arranged on a light receiving surface of an image capturing area, a plurality of color filters are positioned in a constant period above the plurality of light receiving sections, and a plurality of microlenses for focusing light on the plurality of respective light receiving sections are positioned on the plurality of color filters, and a plurality of color signals are output in accordance with the plurality of color filters, where the constant period of the plurality of color filters is defined as a unit, and the size of the plurality of microlenses is variable for each light receiving section so that the ratio of the plurality of color signals is constant in the unit.
Claims15
A color solid-state image capturing apparatus in which a plurality of light receiving sections for performing photoelectric conversions are arranged in a matrix on a light receiving surface of an image capturing area, a plurality of color filters each having a different spectral characteristic are positioned in a constant period above the plurality of light receiving sections in a corresponding manner to each of the plurality of light receiving sections, and a plurality of microlenses for focusing light on the plurality of respective light receiving sections are positioned on the plurality of color filters, and a plurality of color signals are output in accordance with the plurality of color filters,
- wherein the constant period of the plurality of color filters is defined as a unit, and the size of the plurality of microlenses is variable for each light receiving section so that the ratio of the plurality of color signals is constant in the unit;
- and
- wherein the ratio of the plurality of color signals is red (R)/green (G), green (G)/blue (B), and blue (B)/red (R), and the ratio is constant in the entire image capturing area.
A color solid-state image capturing apparatus in which a plurality of light receiving sections for performing photoelectric conversions are arranged in a matrix on a light receiving surface of an image capturing area, a plurality of color filters each having a different spectral characteristic are positioned in a constant period above the plurality of light receiving sections in a corresponding manner to each of the plurality of light receiving sections, and a plurality of microlenses for focusing light on the plurality of respective light receiving sections are positioned on the plurality of color filters, and a plurality of color signals are output in accordance with the plurality of color filters,
- wherein the constant period of the plurality of color filters is defined as a unit, and the size of the plurality of microlenses is variable for each light receiving section so that the ratio of the plurality of color signals is constant in the unit;
- and
- wherein when the size of all the plurality of microlenses is equal and the ratio of the plurality of color signals is not constant producing Fij (x, y)=Ci (x, y)/Cj (x, y) as a distribution, the size of the microlens for each light receiving section is defined to be the size in proportion to 1/Fij (x, y), wherein (x, y) denotes unit x, y coordinates of the space period of the color filter, and i and j denotes numbers to express the type of the color filter.
Dependencies are inferred from the claim text.