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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: 2021-05-25
RUISHENG OPTOELECTRONICS TECH SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the common three-piece 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 apertures while having good optical performance. , ultra-thin, wide-angle design requirements

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach ）

[0045] Referring to the accompanying drawings, the present invention provides an imaging optical lens 10 . figure 1 Shown is an imaging optical lens 10 according to a first embodiment of the present invention, and the imaging optical lens 10 includes three lenses. Specifically, the imaging optical lens 10 includes in sequence from the object side to the image side: a first lens L1 , an aperture S1 , a second lens L2 , and a third lens L3 . A glass plate GF is provided between the third lens L3 and the image plane Si, and the glass plate GF may be a glass cover or an optical filter.

[0046] In this embodiment, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, and the third lens L3 has positive refractive power.

[0047] In this embodiment, the first lens L1 is made of plastic material, the second lens L2 is made of plastic material, and the third lens L3 is made of plastic material.

[0048] Here, the focal length of the whole...

no. 2 approach ）

[0131] 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 the same as those in the first embodiment, so the same parts will not be repeated here.

[0132] Table 5 shows design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0133] 【table 5】

[0134]

[0135] 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.

[0136] 【Table 6】

[0137]

[0138] 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.

[0139] 【Table 7】

[0140]

[0141] 【Table 8】

[0142]

[0143] In addition, in the subsequent Table 17, various numerica...

no. 3 approach ）

[0148] Figure 9 It 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 the same as those in the first embodiment, so the same parts will not be repeated here.

[0149] Table 9 shows design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0150] 【Table 9】

[0151]

[0152] Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present invention.

[0153] 【Table 10】

[0154]

[0155] 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.

[0156] 【Table 11】

[0157]

[0158] 【Table 12】

[0159]

[0160] In addition, in the subsequent Table 17, various numerical...

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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 in sequence from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, and a positive refractive lens. The third lens of force; 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 third lens is f3, the radius of curvature of the object side of the first lens is R1, and the image side of the first lens is The radius of curvature is R2, the radius of curvature of the object side of the second lens is R3, the radius of curvature of the image side of the second lens is R4, the radius of curvature of the object side of the third lens is R5, and the radius of curvature of the image side of the third lens is is R6, the on-axis distance from the image side of the second lens to the object side of the third lens is d4, the on-axis thickness of the third lens is d5, and satisfies the following relationship: 0.75≤f1 / f≤0.95; 1.20≤f3 / f≤2.00; 0≤(R1+R2) / (R1‑R2)≤0.80; ‑3.50≤(R3+R4) / (R3‑R4)≤‑1.50; ‑8.00≤(R5+R6) / (R5 -R6)≤-2.50; 1.50≤d5 / d4≤4.00. The imaging optical lens of the present invention has good optical performances such as large aperture, 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 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 Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06
CPCG02B13/0035G02B13/18G02B13/06G02B9/14G02B27/0025
Inventor 刘韵杰
Owner RUISHENG OPTOELECTRONICS TECH SUZHOU CO LTD
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