Optical system, lens module and electronic equipment

An optical system and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of large depth of view, inability to reduce the size of the camera lens, and affecting the screen ratio of the device.

Pending Publication Date: 2021-09-14
JIANGXI JINGCHAO OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For devices with a screen-digging design, the structure of the camera lens largely determines the size of the screen opening, which in turn affects the screen-to-body ratio of the device
[0003] With the continuous upgrading of electronic technology, smart phones and other electronic devices are gradually developing towards larger screens and more beautiful appearance, and the demand for screen-to-body ratio is gradually increasing. However, the conventional lens cannot reduce the size of the camera lens because of its too large lens head. Volume size on electronic device screen
In addition, in the past, small lens lenses often had larger openings at the front of the screen due to the larger depth of view, which led to the problem of reducing the screen-to-body ratio of electronic devices.

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

no. 1 example

[0043] Please refer to figure 1 and figure 2 , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0044] The first lens L1 has positive refractive power, and both the object side S1 and the image side S2 of the first lens L1 are convex at the near optical axis.

[0045] The second lens L2 has a negative refractive power. The object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 of the second lens L2 is concave at the near optical axis.

[0046] The third lens L3 has positive refractive power, and both the object side S5 and the image side S6 of the third lens L3 are convex at the near optical axis.

[0047] The fourth lens L4 has negative refractive power. The object side S7 of the fourth lens L4 is concave at the near optical axis, and the image side S8 of the fourth lens L4 is convex at the near optical axis.

[0048] The fifth lens L5 has negative ...

no. 2 example

[0067] Please refer to image 3 and Figure 4 , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0068] The first lens L1 has positive refractive power, and both the object side S1 and the image side S2 of the first lens L1 are convex at the near optical axis.

[0069] The second lens L2 has a negative refractive power. The object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 of the second lens L2 is concave at the near optical axis.

[0070] The third lens L3 has positive refractive power. The object side S5 of the third lens L3 is concave at the near optical axis, and the image side S6 of the third lens L3 is convex at the near optical axis.

[0071] The fourth lens L4 has negative refractive power. The object side S7 of the fourth lens L4 is concave at the near optical axis, and the image side S8 of the fourth lens L4 is convex at the near optical...

no. 3 example

[0084] Please refer to Figure 5 and Image 6 , the optical system of this embodiment includes in sequence from the object side to the image side along the optical axis direction:

[0085] The first lens L1 has positive refractive power. The object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 of the first lens L1 is concave at the near optical axis.

[0086] The second lens L2 has a negative refractive power. The object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 of the second lens L2 is concave at the near optical axis.

[0087] The third lens L3 has positive refractive power. The object side S5 of the third lens L3 is convex at the near optical axis, and the image side S6 of the third lens L3 is concave at the near optical axis.

[0088] The fourth lens L4 has negative refractive power. The object side S7 of the fourth lens L4 is concave at the near optical axis, and the image side S8 of ...

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Abstract

The present invention provides an optical system, a lens module and electronic equipment, the optical system sequentially comprising from an object side to an image side along an optical axis: a first lens to a sixth lens having refractive power, the first lens and a third lens having positive refractive power, and a second lens having negative refractive power. The object side surfaces of the first lens, the second lens, the fifth lens and the sixth lens and the image side surface of the fourth lens are convex surfaces at a paraxial region, and the image side surfaces of the second lens, the fifth lens and the sixth lens and the object side surface of the fourth lens are concave surfaces at a paraxial region. The optical system satisfies the following relational expression: 0.2<SD11 / ImgH<0.31, wherein SD11 is half of the maximum effective aperture of the object side surface of the first lens, and ImgH is the radius of the maximum effective imaging circle of the optical system. By reasonably designing the surface type and the refractive power of each lens of the optical system and enabling the surface type and the refractive power to meet the relational expression, the tolerance sensitivity of the optical system can be reduced, small-head design can be realized, and the screen-to-body ratio of equipment can be improved.

Description

technical field [0001] The invention belongs to the technical field of optical imaging, and in particular relates to an optical system, a lens module and electronic equipment. Background technique [0002] With the development of photography technology, currently common electronic devices generally use a hole-digging design on the side of the display to match the camera, and remove the notch area to increase the screen-to-body ratio of the device. For a device with a screen hole design, the structure of the camera lens largely determines the size of the screen hole, which in turn affects the screen-to-body ratio of the device. [0003] With the continuous upgrading of electronic technology, smart phones and other electronic devices are gradually developing towards larger screens and more beautiful appearance, and the demand for screen-to-body ratio is gradually increasing. However, the conventional lens cannot reduce the size of the camera lens because of its too large lens ...

Claims

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Application Information

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IPC IPC(8): G02B13/00G02B13/18
CPCG02B13/0015G02B13/0045G03B30/00
Inventor杨懿李明
OwnerJIANGXI JINGCHAO OPTICAL CO LTD