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Optical imaging lens, lens module and electronic equipment

A technology of optical imaging lens and lens module, which is applied in optics, optical components, instruments, etc., can solve the problems of increasing the production cost of optical imaging system, inconvenient miniaturization of optical imaging system, light and thin design, etc., and achieve the expansion of field of view Range, thin and light design, and the effect of reducing sensitivity

Active Publication Date: 2022-07-01
TIANJIN OFILM OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in some designs, the imaging quality of the optical imaging system is improved by using the diffractive surface, and the addition of the diffractive surface increases the processing difficulty of the optical imaging system, increases the production cost of the optical imaging system, and is not convenient to realize the miniaturization of the optical imaging system Lightweight and lightweight design

Method used

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  • Optical imaging lens, lens module and electronic equipment
  • Optical imaging lens, lens module and electronic equipment
  • Optical imaging lens, lens module and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see figure 1 and figure 2 As shown, according to the first embodiment of the present invention, an optical imaging lens is provided. The optical imaging lens includes a first lens 10 , a diaphragm 50 , a second lens 20 and a protective plate 30 arranged in sequence from the object side to the image side. .

[0054] Wherein, the first lens 10 has a negative refractive power, and the near-optical axis region of the image side 11 of the first lens 10 is concave, the near-circumferential region is convex, and the near-optical axis region of the object side 12 of the first lens 10 is convex. The near-circumferential region is concave, and the image side 11 and the object side 12 of the first lens 10 are both aspherical;

[0055] The second lens 20 has a positive refractive power, and the near-optical axis region of the image side surface 21 of the second lens 20 is concave, the near-circumferential region is concave, and the near-optical axis region of the object side 22 ...

Embodiment 2

[0078] see image 3 and Figure 4 As shown, according to the second embodiment of the present invention, an optical imaging lens is provided, and the structure of the optical imaging lens is the same as that in the first embodiment, the difference is that the optical imaging lens in this embodiment satisfies the following conditional formula :

[0079] -13mm<(f1*f2) / (CT2-CT1)=-9.779mm<-8mm;

[0080] 3.5

[0081] 0.5mm

[0082] 2<2*lmgh / EPD=2.482<3;

[0083] 1.5

[0084] f / EPD=1.1<1.5;

[0085] -0.5

[0086] Among them, the above parameters have been defined before, and will not be repeated here, and the units of parameters f1, f2, CT1, CT2, TTL, f, lmgh, SAG_S22, and EPD are all millimeters (mm), and the unit of FOV is degrees (° ).

[0087] Table 1 is a characteristic table of the optical imaging lens of the present embodiment, wherein the data of the focal length is obtained by usin...

Embodiment 3

[0096] see Figure 5 and Image 6 As shown, according to the third embodiment of the present invention, an optical imaging lens is provided, and the structure of the optical imaging lens is the same as that in the first embodiment, the difference is that the optical imaging lens in this embodiment satisfies the following conditional formula :

[0097] -13mm<(f1*f2) / (CT2-CT1)=-12.332mm<-8mm;

[0098] 3.5

[0099] 0.5mm

[0100] 2<2*lmgh / EPD=2.373<3;

[0101] 1.5

[0102] f / EPD=1.1<1.5;

[0103] -0.5

[0104] Among them, the above parameters have been defined before, and will not be repeated here, and the units of parameters f1, f2, CT1, CT2, TTL, f, lmgh, SAG_S22, and EPD are all millimeters (mm), and the unit of FOV is degrees (° ).

[0105] Table 5 is a characteristic table of the optical imaging lens of this embodiment, wherein the data of the focal length is obtained by using infr...

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Abstract

The invention relates to the technical field of camera devices, and specifically discloses an optical imaging lens, a lens module and an electronic device. The optical imaging lens includes a first lens and a second lens arranged in sequence from the object side to the image side, the first lens has a negative refractive power, the second lens has a positive refractive power, and the image side of the second lens is convex in the near optical axis area. ; Wherein, the optical imaging lens satisfies the conditional formula: ‑13mm<(f1*f2) / (CT2‑CT1)<‑8mm, f1 is the focal length of the first lens, f2 is the focal length of the second lens, and CT1 is the first lens in The central thickness on the optical axis, CT2 is the central thickness of the second lens on the optical axis. The optical imaging lens of the present invention can make the optical imaging lens more compact on the premise of satisfying the optical performance requirements of the optical imaging lens, and is more convenient to realize the miniaturization, lightness and thinness of the optical imaging lens.

Description

technical field [0001] The present invention relates to the technical field of camera devices, and in particular, to an optical imaging lens, a lens module and electronic equipment. Background technique [0002] Infrared thermometers are widely used in many public places (such as airports, railway stations, subway stations, large shopping malls, etc.). Generally, infrared thermometers regard the scene / person in the field of view as a hot spot for temperature measurement; infrared imaging The infrared imaging thermometer records the relative value and distribution of the infrared radiation flux of the scene / character in the field of view, thereby forming the contrast of the infrared image; the infrared imaging thermometer measures the temperature distribution of the infrared image of the scene object, and uses the isotherm, false It can be displayed in color, etc., so as to obtain an infrared image corresponding to the scene and including the temperature and its distribution....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/003G02B13/18
Inventor 乐宇明蔡雄宇董勇兵赵迪
Owner TIANJIN OFILM OPTO ELECTRONICS CO LTD