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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, inability to meet large aperture, ultra-thin, wide-angle, etc., and achieve good optical performance Effect

Active Publication Date: 2019-10-22
AAC OPTICS SOLUTIONS PTE 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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  • Camera optical lens
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Experimental program
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Effect test

no. 1 approach

[0053] Please refer to the accompanying drawings, the present invention provides a camera optical lens 10 . figure 1 Shown is the imaging optical lens 10 of the first embodiment of the present invention, the imaging optical lens 10 including five lenses. Specifically, the imaging optical lens 10 includes, from the object side to the image side in sequence: a first lens L1 with a negative refractive power, an aperture S1, a second lens L2 with a positive refractive power, and a third lens L2 with a negative refractive power. Lens L3, fourth lens L4 with positive refractive power, and fifth lens L5 with negative refractive power. An optical element such as an optical filter (filter) GF may be disposed between the fifth lens L5 and the image plane Si.

[0054] In this embodiment, the focal length of the imaging optical lens 10 is defined as f, the focal length of the first lens L1 is f1, and the following relationship is satisfied: -3.00≤f1 / f≤-1.90; the first lens L1 is defined ...

no. 2 approach

[0142] The second embodiment is basically the same as the first embodiment, and the meanings of symbols are the same as those of the first embodiment. For the structure of the imaging optical lens 20 of the second embodiment, please refer to Figure 5 As shown, only the differences are listed below.

[0143] Table 5 and Table 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0144] 【table 5】

[0145]

[0146] 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.

[0147] 【Table 6】

[0148]

[0149] 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 present invention.

[0150] 【Table 7】

[0151] Number of inflection points Inflection point position 1 Inflection point position 2 P1R...

no. 3 approach

[0158] 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. For the structural form of the imaging optical lens 30 of the third embodiment, please refer to Figure 9 As shown, only the differences are listed below.

[0159] Table 9 and Table 10 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0160] 【Table 9】

[0161]

[0162] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0163] 【Table 10】

[0164]

[0165] 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 to the third embodiment of the present invention.

[0166] 【Table 11】

[0167] Number of inflection points Inflection point position 1 Inflection point position 2 ...

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Abstract

The invention discloses a camera optical lens. The camera optical lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the object side to the image side. The focal length of the camera optical lens is f. The focal length of the first lens is f1. The focal length of the third lens is f3. The focal length of the fifth lens is f5. The radius of curvature of the object side of the third lens is R5. The on-axis thickness of the third lens is d5. The on-axis thickness of the fourth lens is d7. The on-axis distance from the image side of the fourth lens to theobject side of the fifth lens is d8. According to the camera optical lens, f1 / f is between -3.00 and -1.90; (f3+f5) / f is between -5.00 and -4.00; d7 / d8 is between 8.00 and 15.00; and R5 / d5 is between10.00 and 20.00. The camera optical lens provided by the invention has good optical performances, and can meet the design requirements of large aperture, wide angle and being ultra-thin.

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 -OxideSemiconductor 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, they have good Miniaturized camera lenses with image quality have become the mainstrea...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/06G02B13/18
Inventor 王康
Owner AAC OPTICS SOLUTIONS PTE LTD
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