公开(公告)号：US20180164555A1

公开(公告)日：2018-06-14

申请号：US15670493

申请日：2017-08-07

Applicant: Young Optics Inc. ,  NALUX CO., LTD.

Inventor： Yuan-Hung SU ,  Sheng-Tang LAI ,  Kuo-Chuan WANG ,  Norihisa SAKAGAMI

IPC: G02B15/16 ,  G02B15/177

Abstract: An optical lens includes a first lens group with negative refractive power, a second lens group with positive refractive power, and an aperture stop disposed between the first lens group and the second lens group. A total number of lenses in the first lens group is less than three, and a total number of lenses in the second lens group is less than five. The second lens group includes a first lens, a second lens and a third lens arranged in order in a direction away from the aperture stop. Each of the first lens and the second lens is an aspheric lens, and one of the first lens and the second lens has a diffractive optical surface.

公开(公告)号：US20190079275A1

公开(公告)日：2019-03-14

申请号：US15846776

申请日：2017-12-19

Applicant: Young Optics Inc.

Inventor： Sheng-Tang LAI ,  Kuo-Chuan WANG ,  Yuan-Hung SU

IPC: G02B13/16 ,  G02B9/60 ,  G02B13/18 ,  G02B27/42

Abstract: An optical lens includes five aspheric lenses and an aperture stop. The five aspheric lenses are, arranged in order from a first side to a second side, a first lens, a second lens, a third lens, a fourth lens and a fifth lens, and the aperture stop is disposed between the first lens and the second lens. An image height at the image plane is denoted as H, the image height is equally divided into ten sections to from ten height positions 0.1H, 0.2H, 0.3H, 0.4H, 0.5H, 0.6H, 0.7H, 0.8H, 0.9H and 1H. Chief rays traveling through the optical lens and to the ten height positions respectively form ten angles with respect to a normal of an image plane, and each of the ten angles is smaller than 10 degrees.