Camera shooting optical lens

A technology of optical lens and optical total length, which is applied in the field of optical lens, can solve the problems of unreasonable focal power, lens spacing and lens shape setting, unable to meet long focal length, ultra-thin, etc., and achieve the effect of excellent optical characteristics

Active Publication Date: 2021-01-15
RUISHENG OPTOELECTRONICS TECH SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of technology and the increase of diversified needs of users, the pixel area of ​​the photosensitive device is constantly shrinking, and the requirements of the system for imaging quality are constantly improving. Although the common five-element lens already has better optical performance, but its focal power, lens spacing and lens shape settings still have certain irrationality, resulting in a lens structure that has good optical performance and cannot meet the design requirements of long focal length and ultra-thin

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0032] Referring to the accompanying drawings, the present invention provides an imaging optical lens 10 . figure 1 Shown is a schematic structural view of the imaging optical lens 10 according to the first embodiment of the present invention, and the imaging optical lens 10 includes five lenses. Specifically, the left side is the object side, and the right side is the image side, and the imaging optical lens 10 includes in sequence from the object side to the image side: an aperture S1, a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4 and the fifth lens L5. An optical element such as an optical filter (filter) GF may be disposed between the fifth lens L5 and the image plane Si.

[0033] In this embodiment, the first lens L1 has a positive refractive power, the second lens L2 has a negative refractive power, the third lens L3 has a negative refractive power, the fourth lens L4 has a positive refractive power, and the fifth lens L5 has a negative refrac...

no. 2 approach

[0131] Figure 5 Shown is a schematic structural view of the imaging optical lens 20 according to the second embodiment of the present invention. The second embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those of the first embodiment. Only the differences are listed below.

[0132] In this embodiment, the object side surface of the third lens L3 is convex at the paraxial position.

[0133] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0134] 【table 5】

[0135]

[0136]

[0137] Table 6 shows the aspheric surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0138] 【Table 6】

[0139]

[0140] Table 7 and Table 8 show the design data of inflection point and stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the pr...

no. 3 approach

[0150] Figure 9 Shown is a schematic structural diagram of the imaging optical lens 30 of the third embodiment of the present invention. The third embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment. Only the differences are listed below.

[0151] In this embodiment, the fourth lens L4 has negative refractive power, and the image side of the third lens L3 is convex at the paraxial position.

[0152] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0153] 【Table 9】

[0154]

[0155] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0156] 【Table 10】

[0157]

[0158]

[0159] Table 11 and Table 12 show the design data of the inflection point and the stagnation point of each lens in the imaging optical lens 30 according t...

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Abstract

The invention relates to the field of optical lenses, and discloses a camera shooting optical lens, which sequentially comprises a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens and a fifth lens with negative refractive power from an object side to an image side; the focal length of the camera shooting optical lens is f, the focal length of the first lens is f1, the focal length of the third lens is f3, the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens is d6, the on-axis thickness of the fourth lens is d7, the center curvature radius of the object side surface of the fifth lens is R9, the center curvature radius of the image side surface of the fifth lens is R10, and the fifth lens satisfies the following relational expressions: 0.30<=f1 / f<=0.50; -4.00<=f3 / f<=-1.20; 2.00<=d6 / d7<=8.00; 3.00<=R9 / R10<=10.00. The camera shootingoptical lens provided by the invention has good optical performance and also meets the design requirements of long focal length and ultra-thinness.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal devices such as smart phones and digital cameras, and imaging devices such as monitors and PC lenses. Background technique [0002] In recent years, with the rise of smart phones, the demand for miniaturized photographic lenses has been increasing, and the photosensitive devices of general photographic lenses are nothing more than photocoupled devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal -Oxide Semiconductor Sensor, CMOS Sensor), and due to the improvement of semiconductor manufacturing process technology, the pixel size of photosensitive devices has been reduced, and today's electronic products are developing with good functions and thin, light and small appearance. Therefore, it has Miniaturized camera lenses with good imaging quality have become the mainstream in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0045G02B13/18G02B9/60G02B13/06G02B27/0025
Inventor 谈梦科
Owner RUISHENG OPTOELECTRONICS TECH SUZHOU CO LTD
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