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OPTICAL IMAGE CAPTURING MODULE

  • US 20200096738A1
  • Filed: 12/20/2018
  • Published: 03/26/2020
  • Est. Priority Date: 09/21/2018
  • Status: Active Grant
First Claim
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1. An optical image capturing module, comprising:

  • a circuit assembly, which comprises a circuit substrate and an image sensing component, wherein the circuit substrate has an upper surface and a lower surface, which are located on opposite side, and has a through hole penetrating through the upper surface and the lower surface;

    the lower surface of the circuit substrate has a plurality of circuit contacts thereon;

    the image sensing component has a sensing surface, wherein a surface of the image sensing component has a plurality of image contacts on the same side with the sensing surface;

    each of the image contacts is electrically connected to one of the circuit contacts on the circuit substrate via a signal transmission element, so that the sensing surface directly faces the through hole; and

    a lens assembly, which comprises a lens base and a lens group, wherein the lens base is made of an opaque material and has a receiving hole penetrating through two ends of the lens base, so that the lens base is hollow;

    in addition, the lens base is disposed on the upper surface of the circuit substrate, so that the image sensing component directly faces the receiving hole;

    the lens group comprises at least two lenses having refractive power, and is disposed on the lens base and is located in the receiving hole;

    moreover, an image plane of the lens group is located on the sensing surface, and an optical axis of the lens group overlaps with a central normal of the sensing surface, so that a light passes through the lens group in the receiving hole and the through hole, and projects onto the sensing surface;

    wherein the optical image capturing module satisfies;

    1.0≤

    f/HEP≤

    10.0;

    0 deg<

    HAF≤

    150 deg;

    0 mm<

    PhiD≤

    18 mm;

    0<

    PhiA/PhiD≤

    0.99; and

    0.9≤

    2(ARE/HEP)≤

    2.0;

    where f is a focal length of the lens group;

    HEP is an entrance pupil diameter of the lens group;

    HAF is a half of a maximum field angle of the lens group;

    PhiD is a maximum value of a minimum length on a periphery of the lens base perpendicular to the optical axis of the lens group;

    PhiA is a maximum effective diameter of an image-side surface of the at least two lenses of the lens group closest to the image plane;

    ARE is a profile curve length measured from a start point where the optical axis of the lens group passes through any surface of one of the at least two lenses, along a surface profile of the corresponding lens, and finally to a coordinate point of a perpendicular distance where is a half of the entrance pupil diameter away from the optical axis.

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