公开(公告)号：US10571654B2

公开(公告)日：2020-02-25

申请号：US15402523

申请日：2017-01-10

Applicant: OmniVision Technologies, Inc.

Inventor： Tingyu Cheng ,  Jau-Jan Deng

IPC: G02B13/18 ,  G02B9/04 ,  G02B13/00

Abstract: A four-surface, near-infrared wafer-level lens system for imaging a scene onto an image plane includes (a) a first wafer-level lens having a first convex lens surface facing the scene and a second concave lens surface facing the image plane, and (b) a second wafer-level lens disposed between the first wafer-level lens and the image plane and including a third concave lens surface facing the scene and a fourth aspheric convex lens surface facing the image plane. The four-surface, near-infrared wafer-level lens system is further characterized by an image resolution corresponding to at least 60% contrast of 2 line pairs per millimeter in object plane across a scene portion having at least 10 millimeters extent in the object plane.

公开(公告)号：US10191255B2

公开(公告)日：2019-01-29

申请号：US15273051

申请日：2016-09-22

Applicant: OmniVision Technologies, Inc.

Inventor： Tingyu Cheng ,  Jau-Jan Deng

IPC: G02B13/14 ,  G02B5/00 ,  G02B9/34

Abstract: A four-element athermal lens includes four coaxially aligned lenses including a (i) first lens and, in order of increasing distance therefrom and on a same side thereof, (ii) a second lens, a third lens, and a fourth lens. The first lens and the second lens are positive lenses. The third and fourth lenses are negative lenses. The first lens, second lens, third lens, and fourth lens have equal respective refractive indices n1, n2, n3, and n4. A difference between (i) the maximum of n1, n2, n3, and n4 and (ii) the minimum of n1, n2, n3, and n4 being less than 0.05 in a free-space wavelength range. Refractive indices n1, n2, n3, and n4 have respective temperature dependences Δ ⁢ ⁢ n 1 Δ ⁢ ⁢ T , Δ ⁢ ⁢ n 2 Δ ⁢ ⁢ T , Δ ⁢ ⁢ n 3 Δ ⁢ ⁢ T , Δ ⁢ ⁢ n 4 Δ ⁢ ⁢ T . Each of Δ ⁢ ⁢ n 1 Δ ⁢ ⁢ T ⁢ ⁢ and ⁢ ⁢ Δ ⁢ ⁢ n 2 Δ ⁢ ⁢ T exceeds, in the free-space wavelength range, each of Δ ⁢ ⁢ n 3 Δ ⁢ ⁢ T ⁢ ⁢ and ⁢ ⁢ Δ ⁢ ⁢ n 4 Δ ⁢ ⁢ T by a factor between 2.05 and 2.85, inclusive.

公开(公告)号：US09778443B2

公开(公告)日：2017-10-03

申请号：US14875012

申请日：2015-10-05

Applicant: OmniVision Technologies, Inc.

Inventor： Tingyu Cheng ,  Jau-Jan Deng

IPC: G02B9/00 ,  G02B13/00 ,  G02B1/04 ,  G02B9/04

CPC classification number: G02B13/0085 ,  G02B1/041 ,  G02B9/04 ,  G02B13/003 ,  G02B13/006 ,  G02B13/04

Abstract: A three-surface wafer-level lens system for imaging a wide field-of-view scene onto an image plane includes (a) a first wafer-level lens with (i) a first substrate having a first planar surface facing the image plane, and (ii) a first lens element bonded to the first planar surface and having a first lens surface facing the image plane, and (b) a second wafer-level lens with (i) a second substrate having a second planar surface facing away from the image plane, (ii) a third substrate bonded to the second substrate and having a third planar surface facing the image plane, (iii) a second lens element bonded to the second planar surface and having a second lens surface facing away from the image plane, and (iv) a third lens element bonded to the third planar surface and having a third lens surface facing the image plane.