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optical lens

An optical lens and lens technology, applied in the field of optical lenses, can solve the problems affecting the miniaturization of the lens, unfavorable installation and use of the lens, and high cost of the lens

Active Publication Date: 2022-04-15
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, increasing the number of lenses will affect the miniaturization of the lens, which is not conducive to the installation and use of the lens, and will also increase the cost of the lens
In addition, in conventional technology, aspheric lenses are usually used to correct aberrations. When plastic aspheric lenses are used, due to the large thermal expansion coefficient of plastics, there is a problem of blurring the image surface due to temperature changes; when using glass aspheric lenses , it will make the cost of the lens too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Refer to the following figure 1 An optical lens according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of the optical lens according to Embodiment 1 of the present application is shown.

[0058] Such as figure 1 As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens along the optical axis from the object side to the imaging side. Lens L7.

[0059] The first lens L1 is a meniscus lens with positive refractive power, the object side S1 is convex, and the image side S2 is concave. The second lens L2 is a meniscus lens with positive refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens L3 is a biconcave lens with negative refractive power, and its object side S6 and image side S7 are both concave. The fourth lens L4 is a biconvex lens with positive refractive po...

Embodiment 2

[0070] Refer to the following figure 2 An optical lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. figure 2 A schematic structural view of the optical lens according to Embodiment 2 of the present application is shown.

[0071] Such as figure 2 As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens along the optical axis from the object side to the imaging side. Lens L7.

[0072]The first lens L1 is a meniscus lens with positive refractive power, the object side S1 is convex, and the image side S2 is concave. The second lens L2 is a meniscus lens with positive refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens L3 is a biconcave lens with negative refra...

Embodiment 3

[0083] Refer to the following image 3 An optical lens according to Embodiment 3 of the present application is described. image 3 A schematic structural diagram of an optical lens according to Embodiment 3 of the present application is shown.

[0084] Such as image 3 As shown, the optical lens sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens along the optical axis from the object side to the imaging side. Lens L7.

[0085] The first lens L1 is a meniscus lens with positive refractive power, the object side S1 is convex, and the image side S2 is concave. The second lens L2 is a meniscus lens with positive refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens L3 is a biconcave lens with negative refractive power, and its object side S6 and image side S7 are both concave. The fourth lens L4 is a biconvex lens with positive refractive pow...

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Abstract

The present application discloses an optical lens, which sequentially includes from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and Seventh lens. Wherein, the object side of the first lens is convex, and the image side is concave; the second lens has positive refractive power, the object side is convex, and the image side is concave; the third lens and the fourth lens are cemented to form the first cemented lens; The fifth lens is cemented with the sixth lens to form a second cemented lens; and the object side of the seventh lens is concave, and the image side is convex.

Description

technical field [0001] The present application relates to an optical lens, and more particularly, the present application relates to an optical lens including seven lenses. Background technique [0002] At present, in-vehicle cameras are widely used in in-vehicle assisted driving systems to assist the driver in driving, and even for automatic driving. However, with the development and popularization of unmanned driving technology, the pixel requirements for vehicle lenses are getting higher and higher. [0003] In the existing conventional technology, a higher resolution capability is usually obtained by increasing the number of lenses to more than six. However, increasing the number of lenses will affect the miniaturization of the lens, which is not conducive to the installation and use of the lens, and will also increase the cost of the lens. In addition, in conventional technology, aspheric lenses are usually used to correct aberrations. When plastic aspheric lenses are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00
CPCG02B13/0015G02B13/006
Inventor 李响王东方姚波
Owner NINGBO SUNNY AUTOMOTIVE OPTECH