| 摘要 |
PROBLEM TO BE SOLVED: To satisfy light reception characteristics required for both pixels of a standard pixel and a pixel obtained by making the center of gravity of sensitivity eccentric, even if on-chip lens shapes are made to be approximately identical. SOLUTION: An imaging element comprises: imaging pixels for generating image generating signals; and focal point detecting pixels discretely disposed among a plurality of imaging pixels for generating phase difference detecting signals. Each imaging pixel includes: a photoelectric conversion part 61 for converting light into charge; an on-chip lens 69 for converging light to the photoelectric conversion part; and an optical waveguide 70 disposed between the photoelectric conversion part and the on-chip lens for guiding light to the photoelectric conversion part. Each focal point detecting pixel includes: a photoelectric conversion part 61 for converting light into charge; an on-chip lens 69 for converging light to the photoelectric conversion part; and a light shielding layer 51 disposed between the photoelectric conversion part and the on-chip lens for light-shielding a part of the photoelectric conversion part. Both the on-chip lens of the imaging pixel and the on-chip lens of the focal point detecting pixel have focus positions at a position of a height where the light shielding layer 51 is approximately disposed. COPYRIGHT: (C)2011,JPO&INPIT |
