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Camera 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 irrational setting of focal power, lens distance and lens shape, and cannot meet the problems of large aperture, ultra-thin, wide-angle, etc., and achieve excellent optical characteristics Effect

Active Publication Date: 2020-12-15
RUITAI OPTICAL CHANGZHOU 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, as the pixel area of ​​the photosensitive device continues to shrink, and the system’s requirements for imaging quality continue to increase, the five-element lens structure gradually appears in the lens design. Common Although the five-element lens already has good optical performance, its focal power, lens spacing and lens shape settings still have certain irrationality, resulting in a lens structure that cannot meet the needs of large aperture, large aperture, and lens shape while having good optical performance. Ultra-thin, wide-angle design requirements

Method used

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Experimental program
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no. 1 approach )

[0033] Referring to the accompanying drawings, the present invention provides an imaging optical lens 10 . figure 1 Shown is the imaging optical lens 10 according to the first embodiment of the present invention, and the imaging optical lens 10 includes a total of five lenses. Specifically, the imaging optical lens 10 includes, from the object side to the image side, an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5. Optical elements such as an optical filter GF may be disposed between the fifth lens L5 and the image plane Si.

[0034] In this embodiment, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, and the fifth lens L5 has negative refractive power .

[0035] In this embodiment, the first lens L1 is made of plastic material, the second lens L2 is made of plastic mater...

no. 2 approach )

[0128] The second embodiment is basically the same as the first embodiment, the meanings of symbols are the same as those of the first embodiment, and only the differences are listed below.

[0129] Figure 5 Shown is an imaging optical lens 20 according to a second embodiment of the present invention.

[0130] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0131] 【table 5】

[0132]

[0133] Table 6 shows aspherical surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0134] 【Table 6】

[0135]

[0136] Table 7 and Table 8 show the design data of the inflection point and the stagnation point of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0137] 【Table 7】

[0138]

[0139] 【Table 8】

[0140]

[0141] Image 6 , Figure 7 Schematic diagrams of axial abe...

no. 3 approach )

[0145] The third embodiment is basically the same as the first embodiment, the meanings of symbols are the same as those of the first embodiment, and only the differences are listed below.

[0146] Figure 9 The imaging optical lens 30 according to the third embodiment of the present invention is shown, and the object side surface of the fifth lens L5 is convex at the paraxial position.

[0147] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0148] 【Table 9】

[0149]

[0150] Table 10 shows aspherical surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0151] 【Table 10】

[0152]

[0153] Table 11 and Table 12 show the inflection point and stagnation point design data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0154] 【Table 11】

[0155]

[0156] 【Table 1...

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Abstract

The invention relates to the field of optical lenses, and discloses a photographic optical lens. The photographic optical lens comprises five lenses in total. The five lenses are sequentially from the object side to the image side: a first lens with positive refractive power, The second lens with negative refractive power, the third lens with positive refractive power, the fourth lens with positive refractive power and the fifth lens with negative refractive power; wherein, the focal length of the imaging optical lens is f, and the The focal length of the third lens is f3, the central radius of curvature of the object side of the second lens is R3, the central radius of curvature of the image side of the second lens is R4, and the axial thickness of the third lens is d5. The on-axis distance from the image side of the third lens to the object side of the fourth lens is d6, and satisfies the following relational formula: 12.50≤f3 / f≤20.00; 0.30≤(R3+R4) / (R3‑R4)≤ 1.00; 0.30≤d5 / d6≤0.50. The imaging optical lens provided by the invention has good optical performance and at the same time satisfies the design requirements of large aperture, wide angle and ultrathinness.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal equipment such as smart phones and digital cameras, as well as 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 is increasing, and the photosensitive devices of general photographic lenses are nothing more than Charge Coupled Device (CCD) or Complementary Metal Oxide Semiconductor Device (Complementary Metal Semiconductor). -Oxide Semiconductor Sensor, CMOS Sensor) two kinds, and due to the improvement of semiconductor manufacturing process technology, the pixel size of photosensitive devices is reduced, coupled with the development trend of today's electronic products with good functions and light, thin and short appearance, therefore, with Miniaturized camera lenses with good imaging quality have become ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0045G02B13/06G02B9/60
Inventor 陈晨曦阳孙雯
Owner RUITAI OPTICAL CHANGZHOU CO LTD
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