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Optical system, camera module and electronic equipment
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An optical system, optical axis technology, used in optics, optical components, instruments, etc.
Active Publication Date: 2021-10-22
JIANGXI JINGCHAO OPTICAL CO LTD
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[0006] Based on this, it is necessary to provide an optical system, a camera module and an electronic device for how to better realize a large viewing angle and improve the imaging effect.
Method used
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no. 1 example
[0099] refer to figure 1 , in the first embodiment, the optical system 10 sequentially includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a second lens L2 with positive refractive power from the object side to the image side. Three lenses L3, a fourth lens L4 with positive refractive power, a fifth lens L5 with negative refractive power, a sixth lens L6 with positive refractive power, and a seventh lens L7 with negative refractive power.
[0100] The surface shape of each lens surface in the optical system 10 is as follows:
[0101] The object side S1 of the first lens L1 is a convex surface at the near optical axis, and the image side S2 is concave at the near optical axis;
[0102] The object side S3 of the second lens L2 is a convex surface at the near optical axis, and the image side S4 is concave at the near optical axis;
[0103] The object side S5 of the third lens L3 is a convex surface ...
no. 2 example
[0138] refer to image 3 , in the second embodiment, the optical system 10 includes an aperture stop STO, a first lens L1 with a positive refractive power, a second lens L2 with a negative refractive power, and a first lens L2 with a negative refractive power from the object side to the image side. Three lenses L3, a fourth lens L4 with positive refractive power, a fifth lens L5 with negative refractive power, a sixth lens L6 with positive refractive power, and a seventh lens L7 with negative refractive power.
[0139] The surface shape of each lens surface in the optical system 10 is as follows:
[0140] The object side S1 of the first lens L1 is a convex surface at the near optical axis, and the image side S2 is concave at the near optical axis;
[0141] The object side S3 of the second lens L2 is a convex surface at the near optical axis, and the image side S4 is concave at the near optical axis;
[0142] The object side S5 of the third lens L3 is a convex surface at the ...
no. 3 example
[0159] refer to Figure 5 , in the third embodiment, the optical system 10 includes an aperture stop STO, a first lens L1 with positive refractive power, a second lens L2 with positive refractive power, and a second lens L2 with negative refractive power from the object side to the image side. Three lenses L3, a fourth lens L4 with positive refractive power, a fifth lens L5 with negative refractive power, a sixth lens L6 with positive refractive power, and a seventh lens L7 with negative refractive power.
[0160] The surface shape of each lens surface in the optical system 10 is as follows:
[0161] The object side S1 of the first lens L1 is a convex surface at the near optical axis, and the image side S2 is concave at the near optical axis;
[0162] The object side S3 of the second lens L2 is a convex surface at the near optical axis, and the image side S4 is concave at the near optical axis;
[0163] The object side S5 of the third lens L3 is a convex surface at the near ...
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Abstract
The invention relates to an optical system, a camera module and electronic equipment. The optical system sequentially comprises, from an object side to an image side along an optical axis, a first lens with positive refractive power having a convex object-side surface and a concave image-side surface, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, wherein the object side surface of the second lens is a convex surface, and the image side surface is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface is a concave surface; the fourth lens has positive refractive power and a convex image-side surface; the fifth lens has negative refractive power and a concave object-side surface; the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a concave surface; the seventh lens has negative refractive power, the object side surface of the seventh lens is a convex surface, the image side surface of the seventh lens is a concave surface, and at least one of the object side surface and the image side surface of the seventh lens is provided with an inflection structure; the following conditional expressions are satisfied: 4.5 mm < f * tan (HFOV) < 5.0 mm; and f is the effective focal length of the optical system, and HFOV is half of the maximum field angle of the optical system. The design is beneficial to wide-angle development of the optical system and improvement of an imaging effect.
Description
technical field [0001] The invention relates to the technical field of photography and imaging, in particular to an optical system, a camera module and electronic equipment. Background technique [0002] In recent years, with the development of science and technology, the market demand for optical imaging lenses suitable for portable electronic products has gradually increased. Portable electronic products, such as mobile phones and tablet computers, are expected to have a large field of view or excellent imaging effects. [0003] Portable devices such as mobile phones are usually provided with a camera module so that the mobile phone has a camera function. The camera module is usually provided with a Charge-coupled Device (CCD) type image sensor or a Complementary MetalOxideSemiconductor (Complementary MetalOxideSemiconductor, CMOS) type image sensor, and is provided with an optical imaging lens. The optical imaging lens can gather light from the object side, and the ...
Claims
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Application Information
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