| CPC G02B 13/0045 (2013.01) [G02B 9/60 (2013.01); G02B 9/62 (2013.01); G02B 9/64 (2013.01); G02B 13/0065 (2013.01); G02B 27/646 (2013.01); G03B 5/00 (2013.01); G03B 30/00 (2021.01); H04N 23/45 (2023.01); H04N 23/55 (2023.01); G03B 2205/0007 (2013.01)] | 15 Claims |
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1. An electronic device, comprising at least two image capturing units facing a same side, wherein the at least two image capturing units comprise:
a first image capturing unit, comprising an optical image system and a first image sensor, wherein the optical image system comprises, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element, a last lens element and an image surface, a total number of lens elements of the optical image system of the first image capturing unit is five, and the optical image system further comprises an aperture stop; the first image sensor is disposed on the image surface of the optical image system of the first image capturing unit, and the first image sensor has a first resolution of at least 60 megapixels; and
a second image capturing unit, comprising an optical image system and a second image sensor, wherein the optical image system comprises, in order from an object side to an image side along an optical path, a first lens element and an image surface; the second image sensor is disposed on the image surface of the optical image system of the second image capturing unit, and the second image sensor has a second resolution of at least 40 megapixels;
wherein in the first image capturing unit, the first lens element has positive refractive power, the second lens element has negative refractive power and an image-side surface being concave in a paraxial region thereof, and the last lens element has an image-side surface being concave in a paraxial region thereof;
wherein an equivalent focal length of the optical image system of the first image capturing unit is fs_1, an equivalent focal length of the optical image system of the second image capturing unit is fs_2, a focal length of the optical image system of the first image capturing unit is f_1, a focal length of the optical image system of the second image capturing unit is f_2, a maximum field of view of the optical image system of the first image capturing unit is FOV_1, a maximum field of view of the optical image system of the second image capturing unit is FOV_2, and the electronic device satisfies the following conditions:
30.0 [mm]≤fs_1≤150.0 [mm];
10.0 [mm]≤fs_2≤30.0 [mm];
15.0 [mm]<f_1+f_2<45.0 [mm]; and
20.0 [deg.]<FOV_2−FOV_1<80.0 [deg.];
wherein a focal length of the optical image system is f, half of a maximum field of view of the optical image system is HFOV, a distance along an optical axis between the aperture stop and the image-side surface of the last lens element of the optical image system is SD, a distance along the optical axis between the image-side surface of the last lens element and the image surface of the optical image system is BL, and the optical image system of the first image capturing unit satisfies the following conditions:
3.2 [mm]<f×tan(HFOV)<8.0 [mm]; and
0.20<SD/BL<1.40;
wherein an Abbe number of the first lens element of the optical image system is V1, an Abbe number of the second lens element of the optical image system is V2, an Abbe number of the third lens element of the optical image system is V3, an Abbe number of the fourth lens element of the optical image system is V4, an Abbe number of the last lens element of the optical image system is V5, an Abbe number of the i-th lens element of the optical image system is Vi, and at least two lens elements of the optical image system of the first image capturing unit satisfy the following condition:
Vi<23.0, wherein i=1, 2, 3, 4 or 5.
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