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Optical lens

An optical lens and lens technology, which is applied in the field of optical lenses, can solve problems such as increasing production costs, and achieve the effects of high imaging quality, low cost, and low dispersion

Active Publication Date: 2022-07-29
JIANGXI LIANCHUANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For traditional high-quality vehicle lenses, in order to improve the imaging quality, the method of adding lenses or using glass aspheric lenses is adopted. However, adding lenses or using glass aspheric lenses will greatly increase the production cost

Method used

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  • Optical lens
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] see figure 1 , which is a schematic structural diagram of the optical lens provided in Embodiment 1 of the present invention. The optical lens sequentially includes from the object side to the imaging plane along the optical axis: a first lens L1, a second lens L2, a diaphragm ST, and a third lens. L3, fourth lens L4, fifth lens L5, filter G1 and protective glass G2.

[0105] The first lens L1 has a negative refractive power, and the object side surface S1 is a convex surface at the near-optical axis, and the image side surface S2 is a concave surface at the near-optical axis;

[0106] The second lens L2 has a positive refractive power, and both the object side S3 and the image side S4 are convex;

[0107] aperture ST;

[0108] The third lens L3 has a positive refractive power, and both the object side S5 and the image side S6 are convex;

[0109] The fourth lens L4 has a positive refractive power, and both the object side surface S7 and the image side surface S8 are...

Embodiment 2

[0129] see Figure 8 , which is a schematic structural diagram of the optical lens provided in Embodiment 2 of the present invention. The optical lens sequentially includes from the object side to the imaging plane along the optical axis: a first lens L1, a second lens L2, a diaphragm ST, and a third lens. L3, fourth lens L4, fifth lens L5, filter G1 and protective glass G2.

[0130] The first lens L1 has a negative refractive power, and the object side surface S1 is a convex surface at the near-optical axis, and the image side surface S2 is a concave surface at the near-optical axis;

[0131] The second lens L2 has a positive refractive power, and both the object side S3 and the image side S4 are convex;

[0132] aperture ST;

[0133] The third lens L3 has a positive refractive power, and both the object side S5 and the image side S6 are convex;

[0134] The fourth lens L4 has a positive refractive power, and both the object side surface S7 and the image side surface S8 ar...

Embodiment 3

[0151] see Figure 15 , which is a schematic structural diagram of the optical lens provided in Embodiment 3 of the present invention. The optical lens sequentially includes from the object side to the imaging plane along the optical axis: a first lens L1, a second lens L2, a diaphragm ST, and a third lens. L3, fourth lens L4, fifth lens L5, filter G1 and protective glass G2.

[0152] The first lens L1 has a negative refractive power, and the object side surface S1 is a convex surface at the near-optical axis, and the image side surface S2 is a concave surface at the near-optical axis;

[0153] The second lens L2 has a positive refractive power, and both the object side S3 and the image side S4 are convex;

[0154] aperture ST;

[0155] The third lens L3 has a positive refractive power, and both the object side S5 and the image side S6 are convex;

[0156] The fourth lens L4 has a positive refractive power, and both the object side surface S7 and the image side surface S8 a...

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Abstract

The invention provides an optical lens, which comprises five lenses in sequence from an object side to an imaging surface along an optical axis: a first aspheric lens with negative focal power, a second aspheric lens with negative focal power, a third aspheric lens with negative focal power, a fourth aspheric lens with negative focal power, a fifth aspheric lens with negative focal power, a fifth aspheric lens with negative focal power and a sixth aspheric lens with negative focal power, the second spherical lens has positive focal power, and the object side surface and the image side surface of the second spherical lens are convex surfaces; a diaphragm; the object side surface and the image side surface of the third spherical lens are convex surfaces; the object side surface and the image side surface of the fourth spherical lens are convex surfaces; the object side surface of the fifth spherical lens is a concave surface, and the image side surface of the fifth spherical lens is a convex surface; and the fourth lens and the fifth lens are mutually glued to form a glued lens. The optical lens has the advantages of low dispersion, high relative illumination, high imaging quality and low cost.

Description

technical field [0001] The present invention relates to the technical field of imaging lenses, in particular to an optical lens. Background technique [0002] With the development of autonomous driving technology, ADAS (Advanced Driver Assistant System, Advanced Driver Assistance System) has become the standard configuration of many cars; among them, the car lens, as the key component of ADAS, can sense the road conditions around the vehicle in real time and realize the forward direction Features such as collision warning, lane departure warning, and pedestrian detection. [0003] In today's increasingly high demand for automotive automation, the demand for the number of automotive lenses is also increasing. Reducing the cost of automotive lenses and improving imaging quality have become urgent needs of the automotive industry. For traditional high-quality automotive lenses, in order to improve the imaging quality, adding lenses or using glass aspherical lenses will greatly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/18
CPCG02B13/0045
Inventor 凌兵兵鲍宇旻王克民
Owner JIANGXI LIANCHUANG ELECTRONICS CO LTD