An optical unit and an image pickup unit are provided that allow a full angular field to be increased in spite of small size and low cost. An image pickup lens 100 has a first lens 111 with a positive power, a second lens 113 with a positive power, a third lens 114 with a positive power, and a fourth lens 115 with a negative power that are arranged in order from an object side OBJS toward an image surface side, that are arranged in order from the object side toward the image surface side.