Imaging system, lens module and electronic equipment

An imaging system and lens technology, applied in optical components, instruments, optics, etc., can solve the problem that photographic lenses are difficult to have both miniaturization and good imaging quality.

Active Publication Date: 2021-08-20
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Today's electronic products are developing with good functions and thin, light and small appearance. However, it is difficult for existing photographic lenses to achieve both miniaturization and good image quality

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] see figure 1 Embodiment 1 of the present application provides an imaging system 100. The imaging system 100 includes an aperture STO, a first lens 110, a second lens 120, a third lens 130, and a first lens arranged in sequence along the optical axis from the object side to the image side. Four lenses 140 and filters 150. The first lens 110 has positive refractive power, the second lens 120 has negative refractive power, the third lens 130 has positive refractive power, and the fourth lens 140 has positive refractive power. The object side S1 of the first lens 110 is convex at the near optical axis, and the image side S2 of the first lens 110 is concave at the near optical axis. The object side S3 of the second lens 120 is convex at the near optical axis, and the image side S4 of the second lens 120 is concave at the near optical axis. The object side S5 of the third lens 130 is concave at the near optical axis, and the image side S6 of the third lens 130 is convex at ...

Embodiment 2

[0109] see image 3 Embodiment 2 of the present application provides an imaging system 100. The imaging system 100 includes an aperture STO, a first lens 110, a second lens 120, a third lens 130, and a second lens arranged in sequence along the optical axis from the object side to the image side. Four lenses 140 and filters 150. The first lens 110 has positive refractive power, the second lens 120 has negative refractive power, the third lens 130 has positive refractive power, and the fourth lens 140 has negative refractive power. The object side S1 of the first lens 110 is convex at the near optical axis, and the image side S2 of the first lens 110 is concave at the near optical axis. The object side S3 of the second lens 120 is convex at the near optical axis, and the image side S4 of the second lens 120 is concave at the near optical axis. The object side S5 of the third lens 130 is concave at the near optical axis, and the image side S6 of the third lens 130 is convex at...

Embodiment 3

[0118] see Figure 5Embodiment 3 of the present application provides an imaging system 100. The imaging system 100 includes a diaphragm STO, a first lens 110, a second lens 120, a third lens 130, and a second lens arranged in sequence along the optical axis from the object side to the image side. Four lenses 140 and filters 150. The first lens 110 has positive refractive power, the second lens 120 has negative refractive power, the third lens 130 has negative refractive power, and the fourth lens 140 has positive refractive power. The object side S1 of the first lens 110 is convex at the near optical axis, and the image side S2 of the first lens 110 is concave at the near optical axis. The object side S3 of the second lens 120 is convex at the near optical axis, and the image side S4 of the second lens 120 is concave at the near optical axis. The object side S5 of the third lens 130 is concave at the near optical axis, and the image side S6 of the third lens 130 is convex at...

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Abstract

The embodiment of the invention discloses an imaging system, a lens module and electronic equipment. The imaging system sequentially comprises, from an object side to an image side along an optical axis, a first lens which has positive refractive power, and has an object-side surface being convex in a paraxial region; a second lens which has negative refractive power, and has an image-side surface being concave in a paraxial region; a third lens which has positive refractive power or negative refractive power, and has an object-side surface being concave in a paraxial region and an an image-side surface being convex in a paraxial region; and a fourth lens which has positive refractive power or negative refractive power, and has an object-side surface being convex in a paraxial region and an an image-side surface being concave in a paraxial region. The imaging system meets the following conditional expression: fno-f / TTL is less than 1.55. On the premise of ensuring miniaturization and thinning, the imaging quality can be improved.

Description

technical field [0001] The present application relates to the field of optical imaging, in particular to an imaging system, a lens module and electronic equipment. Background technique [0002] With the rise of portable electronic products with photography functions, the demand for miniaturized photography lenses is increasing day by day. Nowadays, the development trend of electronic products with good functions and thin, light and small appearance is the development trend. However, it is difficult for existing photographic lenses to achieve both miniaturization and good image quality. Contents of the invention [0003] Embodiments of the present application provide an imaging system, a lens module, and electronic equipment, which can improve imaging quality while ensuring miniaturization and thinning. The technical solution is as follows: [0004] In the first aspect, an embodiment of the present application provides an imaging system, and the imaging system sequentiall...

Claims

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Application Information

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IPC IPC(8): G02B13/00
CPCG02B13/0015
Inventor 华露杨健李明
Owner JIANGXI JINGCHAO OPTICAL CO LTD
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