Solid-state imaging element, pupil correction method for solid-state imaging element, imaging device, and information processing device

A pupil correction method for a solid-state imaging element, the pupil correction method comprising:

• arranging structural color filters each including a metal film provided with a periodic opening pattern with a structural period smaller than a prescribed wavelength, above at least part of a light receiving element of a solid-state imaging element,
• the solid-state imaging element including
• the light receiving element included in a plurality of pixels, and
• an interconnection layer located below the light receiving element and configured to acquire a signal of light detected by the light receiving element,
• wherein the structural period is different between the structural color filters in accordance with a chief ray angle of incident light, and the structural period of the periodic opening pattern becomes smaller as the chief ray angle becomes larger, relative to the structural period of the periodic opening pattern at the chief ray angle of 0°.

An imaging device comprising at least:

• a solid-state imaging element including
• a light receiving element included in a plurality of pixels,
• structural color filters located above at least part of the light receiving element and each including a metal film provided with a periodic opening pattern with a structural period smaller than a prescribed wavelength, and
• an interconnection layer located below the light receiving element and configured to acquire a signal of light detected by the light receiving element,
• in which the structural period is different between the structural color filters in accordance with a chief ray angle of incident light, and the structural period of the periodic opening pattern becomes smaller as the chief ray angle becomes larger, relative to the structural period of the periodic opening pattern at the chief ray angle of 0°;
• and
• an optical system configured to guide light to the solid-state imaging element.

An information processing device comprising:

• an imaging device including at least
• a solid-state imaging element including
• a light receiving element included in a plurality of pixels,
• structural color filters located above at least part of the light receiving element and each including a metal film provided with a periodic opening pattern with a structural period smaller than a prescribed wavelength, and
• an interconnection layer located below the light receiving element and configured to acquire a signal of light detected by the light receiving element,
• in which the structural period is different between the structural color filters in accordance with a chief ray angle of incident light, and the structural period of the periodic opening pattern becomes smaller as the chief ray angle becomes larger, relative to the structural period of the periodic opening pattern at the chief ray angle of 0°, and
• an optical system configured to guide light to the solid-state imaging element.