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Camera Optical Lens
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A technology of optical lens and optical total length, which is applied in the field of optical lens, can solve the problems of wide-angle and insufficient ultra-thin, and achieve the effect of good optical performance
Active Publication Date: 2021-04-13
AAC OPTICS (CHANGZHOU) CO LTD
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Abstract
Description
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Problems solved by technology
[0004] The object of the present invention is to provide a camera optical lens, aiming to solve the problems of insufficient wide-angle and ultra-thinning of traditional camera optical lenses
Method used
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Embodiment approach 1
[0054] Please also refer to Figure 1 to Figure 4 , the present invention provides the imaging optical lens 10 of Embodiment 1. exist figure 1 Among them, the left side is the object side, and the right side is the image side. The imaging optical lens 10 mainly includes five lenses arranged coaxially, and the first lens L1, the second lens L2, and the third lens L3 are sequentially arranged from the object side to the image side. , the fourth lens L4 and the fifth lens L5. An aperture S1 is also provided on the object side of the first lens L1, and a glass plate GF is provided between the fifth lens L5 and the image plane Si. The glass plate GF can be a glass cover or an optical filter.
[0055] In this embodiment, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has negative refractive power, the fourth lens L4 has positive refractive power, and the fifth lens L5 has negative refractive power .
[0056] W...
Embodiment approach 2
[0168] Figure 5 It is a schematic structural view of the imaging optical lens 20 in the second embodiment. The second embodiment is basically the same as the first embodiment. The meanings of the symbols in the following list are also the same as those in the first embodiment. Therefore, the same parts will not be repeated here, and only listed below difference.
[0169] Table 5 and Table 6 show the design data of the imaging optical lens 20 according to Embodiment 2 of the present invention.
[0170] 【table 5】
[0171]
[0172] 【Table 6】
[0173]
[0174]
[0175] In Table 6, k is the conic coefficient, and A4, A6, A8, A10, A12, A14, A16, and A20 are aspheric coefficients.
[0177] For convenience, the aspheric surface shown in the above formula is used for the aspheric surface of each lens surface. However, the present invention is not...
Embodiment approach 3
[0188] Figure 9It is a schematic structural view of the imaging optical lens 30 in the third embodiment. The third embodiment is basically the same as the first embodiment. The meanings of the symbols in the following list are also the same as those in the first embodiment. Therefore, the same parts will not be repeated here, and only listed below difference.
[0189] Table 9 and Table 10 show the design data of the imaging optical lens 30 according to Embodiment 3 of the present invention.
[0190] 【Table 9】
[0191]
[0192]
[0193] 【Table 10】
[0194]
[0195] In Table 10, k is the conic coefficient, and A4, A6, A8, A10, A12, A14, A16, A18, and A20 are aspheric coefficients.
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Abstract
The present invention provides an imaging optical lens. In the direction from the object side to the image side, the imaging optical lens successively includes a first lens with positive refractive power, a second lens with negative refractive power, and a third lens with negative refractive power. lens, a fourth lens with positive refractive power and a fifth lens with negative refractive power. Wherein, the overall focal length of the imaging optical lens is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the fourth lens is f4, the axial thickness of the first lens is d1, and the object thickness of the second lens is The radius of curvature of the side is R3, the radius of curvature of the object side of the fifth lens is R9, and the radius of curvature of the image side of the fifth lens is R10, satisfying the following relationship: -0.35≤f1 / f2≤-0.25; 1.20≤(f1 +f4) / f≤1.30; 0.18≤d1 / f≤0.22; 2.80≤R3 / f≤3.50; -0.28≤(R9+R10) / (R9-R10)≤-0.24. The camera optical lens has good optical performance and also meets the design requirements of wide-angle and 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 metaloxidesemiconductor 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, it has Miniaturized camera lenses with good imaging quality have become the mainstrea...
Claims
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Application Information
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