Image sensor, electric device using the same and focusing method of the electric device

摘要

An image sensor, an electric device using the same and a focusing method of the electric device are provided. The image sensor comprises a plurality of image capturing units and a detecting unit. Each image capturing unit includes an image capturing pixel and a first micro lens. The first micro lens is disposed in front of the image capturing pixel. The detecting unit has a focus detecting pixel and a second micro lens. The second micro lens is disposed in front of the image detecting pixel. A length of the second micro lens is different from a length of the first micro lenses.

主权项

1. An image sensor, comprising:
a plurality of image capturing units, each having an image capturing pixel and a first micro lens; and at least two detecting units, each having a detecting pixel and a second micro lens, wherein a distance between the detecting pixel and the second micro lens of one of the detecting units, a distance between the detecting pixel and the second micro lens of another one of the detecting units, and a distance between each of the image capturing pixels and each of the first micro lenses are different, a plurality of first incident light beams passing through the first micro lenses are focused at a first plane, a second incident light beam passing through one of the second micro lenses is focused at a second plane, a third incident light beam passing through another one of the second micro lenses is focused at a third plane, and the first plane, the second plane and the third plane are different.