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Optical system, lens module and electronic equipment

An optical system and lens technology, used in the field of photography

Active Publication Date: 2021-11-30
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] This application provides an optical system, lens module and electronic equipment to solve the problem of balance between the size of the optical system and the imaging quality

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] The structural schematic diagram of the optical system 100 in this embodiment refers to figure 1 As shown, the optical system 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, The seventh lens L7 and the optical filter L8, the diaphragm ST is arranged between the image side S2 of the first lens L1 and the object side S3 of the second lens L2, and the imaging plane IMG of the optical system 100 is located away from the optical filter L8 away from the seventh lens L7 side. The first lens L1 to the seventh lens L7 are all plastic aspheric lenses, and the filter L8 is an infrared cut filter L8 made of glass.

[0081] Wherein, the first lens L1 has positive refractive power, the object side S1 of the first lens L1 is concave at the near optical axis H, the image side S2 is convex at the near optical axis H, and the object side S1 of the first lens L1 is concave at the circumference , Image side S2 is convex...

Embodiment 2

[0104] The structural schematic diagram of the optical system 100 in this embodiment refers to image 3 As shown, the optical system 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, The seventh lens L7 and the optical filter L8, the diaphragm ST is arranged between the image side S2 of the first lens L1 and the object side S3 of the second lens L2, and the imaging plane IMG of the optical system 100 is located away from the optical filter L8 away from the seventh lens L7 side. The first lens L1 to the seventh lens L7 are all plastic aspheric lenses, and the filter L8 is an infrared cut filter L8 made of glass.

[0105] Wherein, the first lens L1 has positive refractive power, the object side S1 of the first lens L1 is concave at the near optical axis H, the image side S2 is convex at the near optical axis H, the object side S1 and the image side S2 of the first lens L1 Concave on the circumference.

[0106]...

Embodiment 3

[0128] The structural schematic diagram of the optical system 100 in this embodiment refers to Figure 5 As shown, the optical system 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, The seventh lens L7 and the optical filter L8, the diaphragm ST is arranged between the image side S2 of the first lens L1 and the object side S3 of the second lens L2, and the imaging plane IMG of the optical system 100 is located away from the optical filter L8 away from the seventh lens L7 side. The first lens L1 to the seventh lens L7 are all plastic aspheric lenses, and the filter L8 is an infrared cut filter L8 made of glass.

[0129] Wherein, the first lens L1 has positive refractive power, the object side S1 of the first lens L1 is convex at the near optical axis H, the image side S2 is concave at the near optical axis H, and the object side S1 of the first lens L1 is convex at the circumference , Image side S2 is concav...

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Abstract

The present application discloses an optical system, lens module and electronic equipment. The optical system includes a first lens with refractive power, a second lens with positive refractive power, and a second lens with The third lens has a refractive power, the fourth lens has a refractive power, the fifth lens has a negative refractive power, the sixth lens has a positive refractive power, and the seventh lens has a refractive power. By establishing a 7-piece structure, matching the surface shape and bending force of each lens, it is beneficial to shorten the total optical length, improve the compactness of the optical system, maintain reasonable back focus and wide viewing angle, and obtain excellent image quality. And set the optical system to satisfy the conditional formula 1.0<|R11 / R22|*FNO<1.56, wherein, R11 is the radius of curvature of the object side of the first lens at the optical axis, and R22 is the radius of curvature of the image side of the second lens at the optical axis , FNO is the aperture number of the optical system, which is conducive to increasing the aperture, increasing the adaptability of the optical system to light at large angles, and correcting the edge field image.

Description

technical field [0001] The present application relates to the technical field of imaging, and in particular to an optical system, a lens module and electronic equipment. Background technique [0002] With the development of science and technology and the popularity of smart phones and smart electronic devices, devices with diverse camera functions are widely favored by people. Among them, the increasing demand for portability of mobile devices puts forward higher requirements on the size of the optical lens group. In addition, the improvement of imaging quality has become an inevitable development trend. As electronic devices are increasingly miniaturized, reducing the size of the optical lens group will reduce the number of lens structures, resulting in imaging problems such as insufficient light intake and poor resolution. Therefore, how to adjust the balance between the size of the optical lens group and the imaging quality is an important technical problem to be solved ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18G03B30/00
CPCG02B13/0045G02B13/18G02B13/06G03B30/00
Inventor 党绪文刘彬彬李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD