Optical imaging lens

Optical imaging lens

  • CN 106,468,817 A
  • Filed: 07/05/2016
  • Published: 03/01/2017
  • Est. Priority Date: 07/05/2016
  • Status: Active Application
First Claim
Patent Images

1. a kind of optical imaging lens, from thing side to image side along an optical axis sequentially include one first lens, one second lens, oneThree lens and one the 4th lens, each lens all have one towards thing side and make thing side and that imaging light passes through towards pictureSide and make the image side surface that imaging light passes through, wherein:

  • This thing side of this first lens has a convex surface part being located at optical axis near zone, this image side mask of this first lensThere is a concave part being located at circumference near zone;

    This second lens has positive refractive index, and this image side surface of this second lens has a convex surface being located at optical axis near zonePortion;

    This thing side of 3rd lens has a convex surface part being located at optical axis near zone;

    AndThis thing side of 4th lens has a concave part being located at circumference near zone, this image side mask of the 4th lensThere is a convex surface part being located at circumference near zone;

    This optical imaging lens only possesses above-mentioned four lens with refractive index, and meets following condition formulae:

    TTL/(T2+G34)≦

    4.5TTL represent this thing side of this first lens to this imaging surface the length on optical axis, T2 represents this second lens in lightThickness on axle, G34 represents this thing side distance on optical axis of this image side surface of the 3rd lens to the 4th lens.

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