Patent ID: 9419035
Filing Date: 2016-08-16
CPC Classification: G02B,H01L

Claim Text:
1. An image sensor, comprising: a first micro-lens positioned on a first color filter that is optically coupled to a first light-sensitive element, the first micro-lens having a first curvature and a first height; a second micro-lens positioned on a second color filter that is optically coupled to a second light-sensitive element, the second micro-lens having a second curvature and a second height; and a third micro-lens positioned on a third color filter that is optically coupled to a third light-sensitive element, the third micro-lens having a third curvature and a third height; wherein the first micro-lens, the second micro-lens, and the third micro-lens are made of a single layer of the same material, wherein the first curvature is the same as both the second curvature and the third curvature, wherein the first height is greater than the second height and the second height is greater than the third height, such that light absorption depths in the first, second, and third light-sensitive elements are the same, and wherein the first, second, and third color filters have the same thickness, and wherein the first color filter is disposed on the first light-sensitive element, the second color filter is disposed on the second light-sensitive element, and the third color filter is disposed on the third light-sensitive element.