US 11,947,086 B2
Optical image capturing system
Yeong-Ming Chang, Taichung (TW); Chien-Hsun Lai, Taichung (TW); and Yao-Wei Liu, Taichung (TW)
Assigned to Ability Opto-Electronics Technology Co., Ltd., Taichung (TW)
Filed by Ability Opto-Electronics Technology Co., Ltd., Taichung (TW)
Filed on Jun. 24, 2021, as Appl. No. 17/304,681.
Claims priority of application No. 110102876 (TW), filed on Jan. 26, 2021.
Prior Publication US 2022/0236531 A1, Jul. 28, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/62 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/62 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An optical image capturing system, from an object side to an image side, comprising:
a first lens with negative refractive power, wherein an object-side surface of the first lens on the optical axis is a concave surface, and an image-side surface of the first lens on the optical axis is a concave surface;
a second lens with positive refractive power;
a third lens with refractive power;
a fourth lens with refractive power;
a fifth lens with refractive power;
a sixth lens with refractive power; and
an image plane;
wherein the optical image capturing system comprises the six lenses with refractive power and made of plastic, a maximum height for image formation on the image plane perpendicular to an optical axis in the optical image capturing system is HOI, focal lengths of the first lens through the sixth lens are f1, f2, f3, f4, f5 and f6, respectively, and a focal length of the optical image capturing system is f, the entrance pupil diameter of the optical image capturing system is denoted by HEP, a distance on an optical axis from an object side of the first lens to the image plane is denoted by HOS, a distance on an optical axis from the object side of the first lens to the image side of the sixth lens is denoted by InTL, a half maximum angle of view of the optical image capturing system is denoted by HAF, thicknesses of the first lens to the sixth lens at height of ½ HEP parallel to the optical axis are respectively denoted by ETP1, ETP2, ETP3, ETP4, ETP5 and ETP6, a sum of ETP1 to ETP6 is denoted by SETP, thicknesses of the first lens to the sixth lens on the optical axis are respectively denoted by TP1, TP2, TP3, TP4, TP5 and TP6, a sum of TP1 to TP6 described above is denoted by STP, and the following conditions are satisfied:
1.0≤f/HEP≤3.0; 50 deg<HAF≤75 deg; 2.5≤HOS/f≤5; and 0.5≤SETP/STP<1.