Abstract: A photoelectric conversion device includes a pixel, the pixel including an avalanche photodiode, and a signal processing circuit including a counter configured to generate a count value based on a photon incident on the avalanche photodiode during a count period, the signal processing circuit being configured to output the count value for each count period repeatedly. The pixel transitions from a first state to a second state in which a length of the count period is shorter than that in the first state in accordance with a result of determination based on the count value and a predetermined threshold value.

Abstract: An apparatus includes an extract unit configured to extract features of a first image based on an electromagnetic wave in a first frequency band, an acquire unit configured to acquire motion information about the features, a classify unit configured to classify the features into a first group and a second group based on the motion information, and a remove unit configured to remove, from the first image, a signal corresponding to the feature belonging to the first group.

Abstract: An apparatus includes an extract unit configured to extract features of a first image based on an electromagnetic wave in a first frequency band, an acquire unit configured to acquire motion information about the features, a classify unit configured to classify the features into a first group and a second group based on the motion information, and a remove unit configured to remove, from the first image, a signal corresponding to the feature belonging to the first group.

Abstract: A convex lens has surfaces including a flat surface and a projecting surface, and an anti-reflection structure configured to cover the projecting surface are included. The anti-reflection structure includes a first anti-reflection structure on the first end side, which is one of two end points of the line segment located nearer to the orthogonal projection of the apex than to the center point thereof, and a second anti-reflection structure on a second end side, which is one of the two end points of the line segment located nearer to the center point than to the orthogonal projection of the apex. A light transmittance of the second anti-reflection structure is greater than a light transmittance of the first anti-reflection structure.

Abstract: A convex lens has surfaces including a flat surface and a projecting surface, and an anti-reflection structure configured to cover the projecting surface are included. The anti-reflection structure includes a first anti-reflection structure on the first end side, which is one of two end points of the line segment located nearer to the orthogonal projection of the apex than to the center point thereof, and a second anti-reflection structure on a second end side, which is one of the two end points of the line segment located nearer to the center point than to the orthogonal projection of the apex. A light transmittance of the second anti-reflection structure is greater than a light transmittance of the first anti-reflection structure.

Abstract: In a photoelectric conversion apparatus including a plurality of focus detection pixels, each focus detection pixel including a photoelectric conversion element, the photoelectric conversion element having a light receiving surface, and a plurality of wiring layers to read a signal supplied by the photoelectric conversion element, the photoelectric conversion apparatus further includes a light shielding film covering a part of the photoelectric conversion element and having the lower surface positioned closer to a plane, which includes a light receiving surface of the photoelectric conversion element and which is parallel to the light receiving surface, than a lower surface of the lowermost one of the plurality of wiring layers.

Abstract: In a photoelectric conversion apparatus including a plurality of focus detection pixels, each focus detection pixel including a photoelectric conversion element, the photoelectric conversion element having a light receiving surface, and a plurality of wiring layers to read a signal supplied by the photoelectric conversion element, the photoelectric conversion apparatus further includes a light shielding film covering a part of the photoelectric conversion element and having the lower surface positioned closer to a plane, which includes a light receiving surface of the photoelectric conversion element and which is parallel to the light receiving surface, than a lower surface of the lowermost one of the plurality of wiring layers.