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Optical imaging lens and imaging equipment

An optical imaging lens and lens technology, which is applied in the field of optical lens, can solve the problems of poor target recognition, inability to correctly identify and alarm, etc., and achieve good effect, satisfy the use characteristics, and large focal length

Active Publication Date: 2022-07-05
合肥联创光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of lens cannot see far away, and has poor recognition of long-distance targets. It cannot correctly identify and alarm vehicles that are slightly farther away.

Method used

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  • Optical imaging lens and imaging equipment
  • Optical imaging lens and imaging equipment
  • Optical imaging lens and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] see figure 2 , which is a schematic structural diagram of the optical imaging lens 100 provided by the first embodiment of the present application. The optical imaging lens 100 sequentially includes, from the object side to the imaging surface: a first lens L1, a second lens L2, a diaphragm ST, a third lens L3, a fourth lens L4, a fifth lens L5, a filter G1 and a protective glass G2 .

[0074] The first lens L1 has negative refractive power, the object side S1 is convex, and the image side S2 is concave.

[0075] The second lens L2 has positive refractive power, the object side S3 is convex at the near optical axis, and the image side S4 is concave at the near optical axis.

[0076] The third lens L3 has positive refractive power, and both the object side S5 and the image side S6 are convex.

[0077] The fourth lens L4 has positive refractive power, and both the object side S7 and the image side S8 are convex.

[0078] The fifth lens L5 has negative refractive powe...

Embodiment 2

[0093] see Image 6 , which is a schematic structural diagram of the optical imaging lens 200 provided by the second embodiment of the present application. The optical imaging lens 200 provided by the second embodiment of the present application is substantially the same as the optical imaging lens 100 provided by the first embodiment, and the main difference is that the first lens L1 of the optical imaging lens 200 provided by the second embodiment of the present application adopts Plastic aspheric lens, the second lens L2 has negative refractive power, the object side S3 is concave, the image side S4 is convex, and the curvature radius, thickness and material selection of each lens are different.

[0094]Please refer to Table 2-1. The relevant parameters of each lens in the optical imaging lens 200 provided by the second embodiment of the present application are shown in Table 2-1.

[0095] table 2-1

[0096]

[0097] Referring to Table 2-2, the aspheric parameters of t...

Embodiment 3

[0106] see Figure 10 , which is a schematic structural diagram of the optical imaging lens 300 provided by the third embodiment of the present application. The optical imaging lens 300 provided by the third embodiment of the present application is substantially the same as the optical imaging lens 100 provided by the first embodiment, and the main difference is that the second lens L2 of the optical imaging lens 300 provided by the embodiment of the present application has negative light The power, as well as the curvature radius, thickness and material selection of each lens are different.

[0107] Please refer to Table 3-1. The relevant parameters of each lens in the optical imaging lens 300 provided by the third embodiment of the present application are shown in Table 3-1.

[0108] Table 3-1

[0109]

[0110]

[0111] Referring to Table 3-2, the aspheric parameters of the first lens L1, the second lens L2, the fourth lens L4 and the fifth lens L5 in the embodiments...

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Abstract

An embodiment of the present application discloses an optical imaging lens, which sequentially includes a first lens, a second lens, a diaphragm, a third lens, a fourth lens, and a fifth lens along an optical axis from an object side to an imaging surface. The first lens has negative refractive power, the object side of the first lens is convex, and the image side is concave. The second lens has optical power, and the second lens is a meniscus lens. The third lens has positive refractive power, and both the object side and the image side of the third lens are convex. The fourth lens has positive refractive power, and both the object side and the image side of the fourth lens are convex. The fifth lens has negative refractive power, the object side of the fifth lens is concave, and the image side is convex at the near optical axis. The optical imaging lens provided by the embodiment of the present application significantly increases the proportion of the imaging area with a small field of view. Compared with the lens with the same field of view, matching a chip of the same size, the focal length is larger, and more long-distance information can be displayed. And it also has the characteristics of high resolution and large aperture.

Description

technical field [0001] The present application relates to the technical field of optical lenses, and in particular, to an optical imaging lens and an imaging device. Background technique [0002] Advanced Driver Assistant System (ADAS) is an active safety technology that assists drivers to detect possible dangers and even actively intervenes through information collection and processing, which can provide escort for the safety of drivers and passengers. From a technical point of view, ADAS has built a bridge for the accumulation of autonomous driving technology, and is a gradual path for car companies to cut into driverless cars. [0003] With the development of science and technology, ADAS has become the standard configuration of the car, and the camera plays an important role in the application of ADAS. Through the front view, rear view, 360-degree surround view and other cameras, all-round information inside and outside the vehicle can be obtained. . Among them, for the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/18G02B13/02
CPCG02B13/0045G02B13/02
Inventor 陈伟建陈星星曾吉勇
Owner 合肥联创光学有限公司
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