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Camera optical lens

An optical lens and lens technology, applied in the field of optical lenses, can solve problems such as low TTL, and achieve the effect of low TTL and high imaging performance

Active Publication Date: 2018-06-29
AAC OPTICS SOLUTIONS PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, whether it is a three-piece, four-piece, five-piece, or six-piece imaging optical lens, in the prior art, it is impossible to obtain a low TTL (TTL, Total Track Length) while obtaining high imaging performance.

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0022] Referring to the accompanying drawings, the present invention provides an imaging optical lens 10 . figure 1 Shown is the imaging optical lens 10 of the first embodiment of the present invention, and the imaging optical lens 10 includes seven lenses. Specifically, the photographing 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, a fourth lens L4, a fifth lens L5, a sixth lens lens L6 and seventh lens L7. An optical element such as an optical filter (filter) GF may be disposed between the seventh lens L7 and the image plane Si.

[0023] The first lens L1 has a positive refractive power, which can effectively reduce the length of the system, and its object side protrudes outward as a convex surface. The second lens L2 has a negative refractive power. In this embodiment, the image side of the second lens L2 is a concave surface. The third lens L3 has a negative refractive po...

no. 2 approach

[0098] 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, and only the differences are listed below.

[0099] Table 6 and Table 7 show design data of the imaging optical lens 20 according to Embodiment 2 of the present invention.

[0100] 【Table 6】

[0101]

[0102] 【Table 7】

[0103]

[0104] Table 8 shows the aspheric surface data of each lens in the imaging optical lens 20 according to Embodiment 2 of the present invention.

[0105] 【Table 8】

[0106]

[0107]

[0108]Table 9 and Table 10 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.

[0109] 【Table 9】

[0110]

Number of inflection points

Inflection point position 1

Inflection point position 2

Inflection point position 3

R1

0

R2

0 ...

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Abstract

The invention relates to the field of optical lenses, and discloses a camera optical lens. The camera optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from the object side to the image side; the following relation formula is met, namely that f1 / f is greater than 1 and is smaller than 1.5; n1 is greater than1.7 and is smaller than 2.2; f3 / f4 is greater than -2 and is smaller than 2; (r13+r14) is greater than -10, and (r13-r14) is smaller than 10; d1 / TTL is greater than 0.01 and is smaller than 0.05. Thecamera optical lens has the advantages that the high imaging property is obtained, and the low TTL (total track length) is obtained.

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, it has good Miniaturized camera lenses with image quality have become the mainstream in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B13/00
CPCG02B13/0045G02B9/64G02B13/0025G02B27/0025G02B27/0037
Inventor 石荣宝
Owner AAC OPTICS SOLUTIONS PTE LTD
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