Imaging element, imaging apparatus, and electronic equipment
The present technology relates to an imaging element, an imaging apparatus, and electronic equipment which are capable of accurately detecting phase difference. The imaging element includes a first light-receiving part that receives incident light entering through a first on-chip lens, a first phase detecting pixel which is placed between the first on-chip lens and the first light-receiving part and which has a shading film to limit an amount of light reaching the first light-receiving part, and a second phase detecting pixel which has a second light-receiving part to receive incident light entering through a second on-chip lens, with the second light-receiving part being divided into a plurality of light-receiving regions. The technique disclosed herein is applicable to imaging apparatuses having the autofocusing function.
1. An imaging element, comprising:
a first light-receiving part configured to receive first incident light through a first on-chip lens;
a first phase detecting pixel between the first on-chip lens and the first light-receiving part, wherein the first phase detecting pixel has a shading film to limit an amount of light that reaches the first light-receiving part; and
a second phase detecting pixel that comprises a second light-receiving part configured to receive second incident light through a second on-chip lens, wherein the second light-receiving part comprises a first plurality of light-receiving regions.
2. The imaging element as defined in claim 1 , wherein
the first phase detecting pixel is in a peripheral region of a pixel array part of the imaging element, and
the second phase detecting pixel is in a region other than the peripheral region of the pixel array part.
3. The imaging element as defined in claim 1 , wherein a density of the first phase detecting pixel gradually increases from a central region of a pixel array part of the imaging element to a peripheral region of the pixel array part.
4. The imaging element as defined in claim 1 , wherein the first light-receiving part comprises a second plurality of light-receiving regions.
5. The imaging element as defined in claim 4 , wherein the first plurality of light-receiving regions and the second plurality of light-receiving regions are in at least one of a vertical direction or a lateral direction.
6. The imaging element as defined in claim 1 , wherein the first phase detecting pixel and the second phase detecting pixel are configured to detect phase differences in different directions.
7. The imaging element as defined in claim 1 , wherein the first phase detecting pixel includes:
a first pixel configured to detect a phase difference in a horizontal direction; and
a second pixel configured to detect the phase difference in a vertical direction.
8. The imaging element as defined in claim 1 , wherein the first light-receiving part has a light-receiving region.
9. The imaging element as defined in claim 1 , wherein
the first phase detecting pixel has a first color filter,
the second phase detecting pixel has a second color filter, and
the first color filter and the second color filter are of a same color.
10. The imaging element as defined in claim 9 , wherein
the first color filter and the second color filter are so arranged as to constitute Bayer layout for red, green, and blue, and
the first phase detecting pixel is arranged on the second phase detecting pixel such that blue color overlaps with green color.
11. The imaging element as defined in claim 1 , wherein
the second phase detecting pixel is configured to detect a phase difference inside an area, wherein the area is set based on optical conditions of at least one of the first on-chip lens or the second on-chip lens,
and
the first phase detecting pixel is configured to detect the phase difference outside the area.
12. An imaging apparatus, comprising:
an imaging element that comprises:
a first light-receiving part configured to receive first incident light through a first on-chip lens;
a first phase detecting pixel between the first on-chip lens and the first light-receiving part, wherein the first phase detecting pixel has a shading film to limit an amount of light that reaches the first light-receiving part; and
a second phase detecting pixel that comprises a second light-receiving part configured to receive second incident light through a second on-chip lens, wherein the second light-receiving part comprises a plurality of light-receiving regions.
13. An electronic equipment, comprising:
an imaging element that comprises:
a first light-receiving part configured to receive first incident light through a first on-chip lens;
a first phase detecting pixel between the first on-chip lens and the first light-receiving part, wherein the first phase detecting pixel has a shading film to limit an amount of light that reaches the first light-receiving part; and
a second phase detecting pixel that comprises a second light-receiving part configured to receive second incident light through a second on-chip lens, wherein the second light-receiving part being divided comprises a plurality of light-receiving regions.