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Optical lens

An optical lens and lens technology, which is applied in the field of optical lens, can solve the problem that the image quality of the lens is greatly affected, and achieve the effect of improving the camera experience, realizing miniaturization, and achieving a balance of high pixels

Active Publication Date: 2022-03-15
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

[0003] However, the reduction in lens size has a great impact on the imaging quality of the lens, especially for wide-angle lenses with large fields of view

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0078] see figure 1 , is a schematic structural diagram of the optical lens 100 provided in the first embodiment of the present invention, the optical lens 100 includes in sequence from the object side to the imaging surface along the optical axis: a first lens L1, a second lens L2, a stop ST, and a third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the filter G1.

[0079] Wherein, the first lens L1 has a negative refractive power, the object side S1 of the first lens is a concave surface near the optical axis, and a convex surface away from the optical axis, and the image side S2 of the first lens is a concave surface;

[0080] The second lens L2 has positive refractive power, the object side S3 of the second lens is a convex surface at the near optical axis, and the image side S4 of the second lens is a concave surface;

[0081] The third lens L3 has a positive refractive power, and both the object side S5 and the image side S6 of the third lens are...

no. 2 example

[0097] see Figure 5 , which is a schematic structural view of the optical lens 200 provided by the second embodiment of the present invention, the structure of the optical lens 200 provided by the second embodiment of the present invention is substantially the same as that of the optical lens 100 provided by the first embodiment, and the difference mainly lies in , the radius of curvature and material selection of each lens are different.

[0098] In the optical lens 200 of the present invention, the vertical distance between the inflection point of the image side S10 of the fifth lens and the optical axis is 0.573 mm, and the sagittal height is -0.036 mm.

[0099] Specifically, relevant parameters of each lens in the optical lens 200 provided by the second embodiment of the present invention are shown in Table 3.

[0100] table 3

[0101]

[0102] The surface coefficients of each aspheric surface of the optical lens 200 in this embodiment are shown in Table 4.

[0103]...

no. 3 example

[0110] see Figure 9 , which is a schematic structural view of the optical lens 300 provided by the third embodiment of the present invention, the structure of the optical lens 300 provided by the third embodiment of the present invention is substantially the same as that of the optical lens 100 provided by the first embodiment, and the difference mainly lies in , the radius of curvature and material selection of each lens are different.

[0111] In the optical lens 300 of the present invention, the vertical distance between the inflection point of the image side S10 of the fifth lens and the optical axis is 0.509 mm, and the sagittal height is -0.014 mm.

[0112] Specifically, relevant parameters of each lens in the optical lens 300 provided by the third embodiment of the present invention are shown in Table 5.

[0113] table 5

[0114]

[0115] Table 6 shows the surface coefficients of each aspheric surface of the optical lens 300 in this embodiment.

[0116] Table 6 ...

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Abstract

The invention discloses an optical lens, and the optical lens sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power, the object side surface of the second lens near the optical axis is a convex surface, and the image side surface of the second lens is a concave surface; a diaphragm; the object side surface and the image side surface of the third lens are convex surfaces; the object side surface and the image side surface of the fourth lens are convex surfaces; the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens near the optical axis is a convex surface; and the object side surface of the sixth lens is a convex surface and at least one inflection point in a paraxial position, and the image side surface of the sixth lens is a concave surface and at least one inflection point in a paraxial position. The optical lens has the advantages of large field angle, high pixel and miniaturization.

Description

technical field [0001] The invention relates to the technical field of imaging lenses, in particular to an optical lens. Background technique [0002] In recent years, CCD / CMOS-based camera lenses have been widely used in various fields, especially wide-angle lenses including ultra-wide-angle lenses and fisheye lenses play an important role in more and more occasions. In terms of photography, the wide-angle lens has the characteristics of short focus and large field of view, which can produce large barrel distortion to create special effects and bring strong visual impact to the observer. In terms of measurement, the wide-angle lens utilizes the characteristics of a large field of view to obtain more data in a single imaging to capture more scene information. At the same time, the market is increasingly demanding the miniaturization of lenses. [0003] However, the reduction in lens size has a great impact on the imaging quality of the lens, especially for wide-angle lense...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/06G02B13/18
CPCG02B13/0045G02B13/06
Inventor 于笑枝曾昊杰
Owner 合肥联创光学有限公司