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CN-224232031-U - Imaging lens and electronic equipment

CN224232031UCN 224232031 UCN224232031 UCN 224232031UCN-224232031-U

Abstract

The utility model discloses an imaging lens which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along the direction from an object side to an image side of an optical axis, wherein the first lens is provided with a positive refractive index, the object side surface of the first lens is a convex surface, the image side surface of the first lens is a plane, the second lens is provided with a positive refractive index, the object side surface of the second lens is a convex surface, the image side surface of the second lens is a concave surface, and the like. The lens provided by the utility model adopts six pieces of ground spherical glass, has a compact light path structure, is beneficial to assembly, has high light loading yield, enables the light-transmitting FNO of the lens to reach 2.0, has excellent imaging, has no obvious purple edge and chromatic dispersion, has clear and bright image quality, can be adapted to a target surface of two millions of pixels, has a pixel size of 2um, has a lens wavelength range of 435 um-650 um, meets the application requirements of special scenes, covers the all-weather clear imaging requirements, meets the temperature drift requirement of-40 ℃ to 85 ℃, and realizes athermalization design.

Inventors

  • SUN WEI
  • WU YUTING
  • SHANGGUAN QIUHE

Assignees

  • 厦门力鼎光电股份有限公司

Dates

Publication Date
20260512
Application Date
20250429

Claims (9)

  1. 1. An imaging lens, characterized by comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along a direction from an object side to an image side of an optical axis; The first lens has positive refractive index, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a plane; the second lens has positive refractive index, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the third lens has negative refractive index, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; The fourth lens has negative refractive index, the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a concave surface; The fifth lens has positive refractive index, the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens element has positive refractive index, wherein an object-side surface of the sixth lens element is convex, and an image-side surface of the sixth lens element is convex or planar.
  2. 2. An imaging lens as claimed in claim 1, wherein said lens satisfies the following relationship: Nd 1 >1.70; Wherein Nd 1 is the refractive index of the first lens.
  3. 3. An imaging lens as claimed in claim 1, wherein said lens satisfies the following relationship: Nd 2 ＞1.70;Vd 2 >45; Wherein Nd 2 is the refractive index of the second lens, and Vd 2 is the abbe coefficient of the second lens.
  4. 4. An imaging lens as claimed in claim 1, wherein said lens satisfies the following relationship: Nd 3 ≥1.85;Vd 3 <25; Wherein Nd 3 is the refractive index of the third lens, and Vd 3 is the abbe coefficient of the third lens.
  5. 5. An imaging lens as claimed in claim 1, wherein said lens satisfies the following relationship: 1.50<Nd 4 ＜1.65;55＜Vd 4 <65; Wherein Nd 4 is the refractive index of the fourth lens, and Vd 4 is the abbe coefficient of the fourth lens.
  6. 6. An imaging lens as claimed in claim 1, wherein said lens satisfies the following relationship: Nd 5 ＜1.65;70＜Vd 5 <75, dn/dT < -6 > 10E-6 in the temperature range of-40 ℃ to 105 ℃, wherein Nd 5 is the refractive index of the fifth lens, vd 5 is the Abbe coefficient of the fifth lens, and dn/dT is the refractive index temperature coefficient of the material used by the fifth lens.
  7. 7. An imaging lens as claimed in claim 1, wherein said lens satisfies the following relationship: 0.95<Nd 4 /Nd 5 ＜1.05;Vd 5 -Vd 4 >7.5; Wherein the fourth lens and the fifth lens are cemented lens groups, nd 4 is the refractive index of the fourth lens, vd 4 is the abbe coefficient of the fourth lens, nd 5 is the refractive index of the fifth lens, and Vd 5 is the abbe coefficient of the fifth lens.
  8. 8. An imaging lens as claimed in claim 1, wherein said lens satisfies the following relationship: Nd 6 ＞1.8;Vd 6 <25.5; Wherein Nd 6 is the refractive index of the sixth lens, and Vd 6 is the abbe coefficient of the sixth lens.
  9. 9. An electronic device, characterized by an imaging lens according to any of claims 1-8, and an image sensor configured to receive an image formed by the imaging lens.

Description

Imaging lens and electronic equipment Technical Field The present utility model relates to the field of imaging lenses, and in particular, to an imaging lens and an electronic device. Background The existing imaging lens, in particular to a vehicle-mounted molding lens, is mainly applied to automatic driving front view, traffic light identification and the like of a vehicle. However, most of the existing imaging lenses have one or more of the following defects: Firstly, the existing lens has small light transmission, low energy utilization rate and can not meet the requirements of customers; secondly, the existing lens cannot pass the severe environment test, such as the rain of the lens; Thirdly, the lenses of the lens are more to use, the light assembly yield is easy to reduce, and the defects of large volume and heavy weight exist; Fourthly, in the use scene of the vehicle-mounted lens, the lens is extremely easy to generate a coke-running phenomenon under the high-low temperature environment condition, and the requirement that the lens can still keep clear imaging under the condition of large temperature span is difficult to meet. Disclosure of utility model In view of the above, the present utility model is directed to an imaging lens and an electronic device. The lens can solve at least one technical disadvantage mentioned in the background art. According to an aspect of the present utility model, there is provided an imaging lens characterized by comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens arranged in this order along an optical axis in a direction from an object side to an image side; The first lens has positive refractive index, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a plane; the second lens has positive refractive index, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the third lens has negative refractive index, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; The fourth lens has negative refractive index, the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a concave surface; The fifth lens has positive refractive index, the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the sixth lens element has positive refractive index, wherein an object-side surface of the sixth lens element is convex, and an image-side surface of the sixth lens element is convex or planar. Six pieces of ground spherical glass are adopted in the lens, the light path structure is simple, the assembly is facilitated, the light loading yield is high, the light-transmitting FNO of the lens reaches 2.0, the imaging is excellent, obvious purple edges and chromatic dispersion are avoided, the image quality is clear and bright, the lens can adapt to target surfaces of two millions of pixels, the pixel size is 2um, the wavelength range of the lens is 435 um-650 um, the application requirements of special scenes are met, the all-weather clear imaging requirements are met, the lens meets the temperature drift requirements of minus 40 ℃ to 85 ℃, and the athermalization design is realized. According to another aspect of the present utility model, there is provided an electronic device according to one of the imaging lenses described above, and an image sensor configured to receive an image formed by the imaging lens. In this solution, the advantages of the electronic device depend on the imaging lens, and will not be explained here. Drawings In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a diagram showing an optical system configuration of a lens barrel in embodiment 1. FIG. 2 is a graph showing MTF at a wavelength band of 435nm to 650nm in visible light in example 1. FIG. 3 is a graph showing distortion in the wavelength band of 435nm to 650nm of visible light in example 1. FIG. 4 is a graph showing the longitudinal chromatic aberration in the wavelength band of 435nm to 650nm of visible light in example 1. FIG. 5 is a graph showing on-axis chromatic aberration in the wavelength band of 435nm to 650nm of visible light in example 1. FIG. 6 is a graph showing the relative illuminance in the wavelength band of 435nm to 650nm of visible light in example 1. Fig. 7 is a structural diagram of an