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Optical system, camera module and terminal equipment

An optical system, optical axis technology, applied in optics, optical components, instruments, etc., can solve the problems of too many lenses, difficult to achieve miniaturization, difficult to achieve telephoto characteristics, etc., achieve small overall length, achieve miniaturization and ultra-high thinning effect

Active Publication Date: 2022-06-21
NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In conventional optical systems, too few lenses make it difficult to achieve telephoto characteristics; too many lenses make it difficult to achieve miniaturization

Method used

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  • Optical system, camera module and terminal equipment
  • Optical system, camera module and terminal equipment
  • Optical system, camera module and terminal equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] like figure 1 As shown, the straight line 11 represents the optical axis, the side of the first lens L1 away from the second lens L2 is the object side 12 , and the side of the third lens L3 away from the second lens L2 is the image side 13 . In the optical system provided in this embodiment, the order from the object side 12 to the image side 13 is a first lens L1, a second lens L2, a third lens L3, and an infrared filter element IRCF.

[0056] The first lens L1 has a positive refractive power, is made of glass, and is all aspherical.

[0057] The second lens L2 has a negative refractive power, is made of plastic material, and is spherical.

[0058] The third lens L3 has a positive refractive power, is made of plastic material, and is all aspherical.

[0059] The infrared filter element IRCF is arranged after the third lens L3, including the object side S7 and the image side S8. The infrared filter element IRCF is used to filter out infrared light, so that the light ...

Embodiment 2

[0073] like image 3 As shown, the straight line 11 represents the optical axis, the side of the first lens L1 away from the second lens L2 is the object side 12 , and the side of the third lens L3 away from the second lens L2 is the image side 13 . In the optical system provided in this embodiment, the order from the object side 12 to the image side 13 is a first lens L1, a second lens L2, a third lens L3, and an infrared filter element IRCF.

[0074] The first lens L1 has a positive refractive power, is made of glass, and is all aspherical.

[0075] The second lens L2 has a negative refractive power, is made of plastic material, and is spherical.

[0076] The third lens L3 has a positive refractive power, is made of plastic material, and is all aspherical.

[0077] The infrared filter element IRCF is arranged after the third lens L3, including the object side S7 and the image side S8. The infrared filter element IRCF is used to filter out infrared light, so that the light ...

Embodiment 3

[0088] like Figure 5 As shown, the straight line 11 represents the optical axis, the side of the first lens L1 away from the second lens L2 is the object side 12 , and the side of the third lens L3 away from the second lens L2 is the image side 13 . In the optical system provided in this embodiment, the order from the object side 12 to the image side 13 is a first lens L1, a second lens L2, a third lens L3, and an infrared filter element IRCF.

[0089] The first lens L1 has a positive refractive power, is made of glass, and is all aspherical.

[0090] The second lens L2 has a negative refractive power, is made of plastic material, and is all aspherical.

[0091] The third lens L3 has positive refractive power, is made of plastic material, and is spherical.

[0092] The infrared filter element IRCF is arranged after the third lens L3, including the object side S7 and the image side S8. The infrared filter element IRCF is used to filter out infrared light, so that the light e...

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Abstract

The embodiment of the present application discloses an optical system, a camera module and a terminal device. The optical system includes first and third lenses with positive refractive power, and a second lens with negative refractive power. The optical system satisfies the following conditional formula: f / TTL>0.9, f is the focal length of the optical system, and TTL is the distance on the optical axis from the object side of the first lens in the optical system to the imaging plane. In this application, by rationally configuring the refractive power of the first lens to the third lens in the optical system and limiting the f / TTL, the optical system has telephoto characteristics, and can accurately capture the details of long-distance shooting objects, realize clear imaging, and make The overall length of the optical system is small to achieve ultra-thinness.

Description

technical field [0001] The present application belongs to the technical field of optical imaging, and in particular relates to an optical system, a camera module and a terminal device. Background technique [0002] With the market's requirements for high imaging quality, telephoto lenses came into being. In the process of photographing distant objects, it is often found that the subject cannot be zoomed in. This requires the use of a telephoto lens, which can well represent the details of distant scenes and capture some subjects that we are not easy to approach. [0003] In the previous optical system, too few lenses made it difficult to achieve telephoto characteristics; too many lenses made it difficult to achieve miniaturization. Therefore, there is a need to develop an optical system with a suitable lens layout that can achieve both telephoto characteristics and miniaturization. SUMMARY OF THE INVENTION [0004] Embodiments of the present application provide an opti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B1/04G02B1/00
Inventor 柿本剛
Owner NANCHANG O FILM OPTICAL ELECTRONICS TECH CO LTD
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