Optical lens, camera module, and terminal
An optical lens includes a first component, a second component, a third component, and a fourth component that each include at least one lens. The second component includes a refraction member configured to change a transmission route of light transmitted from the first component, the third component and the fourth component are coaxially disposed. An included angle is formed between optical axes of the third component and the fourth component and an optical axis of the first component. A position of the second component relative to an imaging plane of the optical lens is fixed. The first component, the third component, and the fourth component can move relative to the second component.
1 . An optical lens, comprising a first component, a second component, a third component, and a fourth component that are successively arranged from an object side to an image side and each comprise at least one lens, wherein
the second component comprises a refraction member configured to change a transmission route of light transmitted from the first component by refraction, wherein the refraction member is disposed within the second component and located on a side of the second component facing away from the third component,
the third component and the fourth component are coaxially disposed along a common optical axis, wherein the common optical axis is aligned with a refracted path of the light transmitted from the first component after refraction by the second component,
an included angle is formed between optical axes of the third component and the fourth component and an optical axis of the first component,
a position of the second component relative to an imaging plane of the optical lens is fixed, and
the first component, the third component, and the fourth component are configured to move relative to the second component, so that the optical lens transitions between a long-focus state, a medium-focus state, a wide-angle state, and a micro-focus state, wherein the micro-focus state corresponds to a state in which a focal length of the optical lens is smaller than that in the wide-angle state,
wherein, when the optical lens performs zooming from the wide-angle state to the long-focus state, the second component does not move, and the first component, the third component, and the fourth component move toward the object side, and
wherein, when the optical lens performs zooming from the wide-angle state to the micro-focus state, the second component does not move, the first component moves toward the image side, and the third component and the fourth component move toward the object side.
2 . The optical lens according to claim 1 , wherein when the optical lens is in the long-focus state, the optical lens meets the following relation:
1.0≤TTL/EFLmax≤1.7, wherein
TTL is a total track length of the optical lens, and EFLmax is an effective focal length of the optical lens in the long-focus state.
3 . The optical lens according to claim 2 , wherein the optical lens meets the following relation:
0.01≤IH/EFLmax≤0.1, wherein
IH is an imaging height of the optical lens.
4 . The optical lens according to claim 1 , wherein the first component has positive focal power, and the first component meets the following relation:
1.0≤|fs 1 /ft|≤1.7, wherein
fs 1 is a focal length of the first component, and ft is a focal length of the optical lens in the long-focus state.
5 . The optical lens according to claim 1 , wherein the second component has negative focal power, and the second component meets the following relation:
0.1≤|fs 2 /ft|≤0.7, wherein
fs 2 is a focal length of the second component, and ft is the focal length of the optical lens in the long-focus state.
6 . The optical lens according to claim 1 , wherein the third component has positive focal power, and the third component meets the following relation:
0.1≤|fs 3 /ft|≤0.7, wherein
fs 3 is a focal length of the third component, and ft is the focal length of the optical lens in the long-focus state.
7 . The optical lens according to claim 1 , wherein the fourth component has positive focal power, and the fourth component meets the following relation:
0.3≤|fs 4 /ft|≤0.9, wherein
fs 4 is a focal length of the fourth component, and ft is the focal length of the optical lens in the long-focus state.
8 . The optical lens according to claim 1 , wherein the optical lens meets the following relation:
4 mm≤φmax≤15 mm, wherein
φmax is a diameter of a largest lens among the first component, the second component, the third component, and the fourth component.
9 . The optical lens according to claim 8 , wherein the first component, the second component, the third component, and the fourth component have N lenses with focal power in total, a value of N is an integer greater than or equal to 7 and less than or equal to 15, and the N lenses with focal power comprise at least seven aspherical lenses.
10 . The optical lens according to claim 1 , wherein a difference between a chief ray angle of the optical lens when the optical lens is in the wide-angle state and another chief ray angle of the optical lens when the optical lens is in the long-focus state is less than or equal to 3 degrees.
11 . The optical lens according to claim 1 wherein a difference between a chief ray angle of the optical lens when the optical lens is in the long-focus state and another chief ray angle of the optical lens when the optical lens is in the micro-focus state is less than or equal to 5 degrees.
12 . The optical lens according to claim 1 , wherein the fourth component comprises a glued lens.
13 . The optical lens according to claim 1 , wherein the optical lens comprises a stop positioned on an object side surface of the third component.
14 . An imaging device, comprising a photosensitive element, a driver, and an optical lens,
wherein the optical lens comprises a first component, a second component, a third component, and a fourth component that are successively arranged from an object side to an image side and each comprise at least one lens,
the second component comprises a refraction member configured to change a transmission route of light transmitted from the first component by refraction, wherein the refraction member is disposed within the second component and located on a side of the second component facing away from the third component,
the third component and the fourth component are coaxially disposed along a common optical axis, wherein the common optical axis is aligned with a refracted path of the light transmitted from the first component after refraction by the second component,
an included angle is formed between optical axes of the third component and the fourth component and an optical axis of the first component,
a position of the second component relative to an imaging plane of the optical lens is fixed, and
the first component, the third component, and the fourth component are configured to move relative to the second component, so that the optical lens transitions between a long-focus state, a medium-focus state, a wide-angle state, and a micro-focus state, wherein the micro-focus state corresponds to a state in which a focal length of the optical lens is smaller than that in the wide-angle state;
wherein the photosensitive element is located on an image side of the optical lens and is located on an imaging plane of the optical lens, and the driver is configured to drive the first component, the third component, and the fourth component to move relative to the second component,
wherein, when the optical lens performs zooming from the wide-angle state to the long-focus state, the second component does not move, and the first component, the third component, and the fourth component move toward the object side, and
wherein, when the optical lens performs zooming from the wide-angle state to the micro-focus state, the second component does not move, the first component moves toward the image side, and the third component and the fourth component move toward the object side.
15 . The imaging device according to claim 14 , wherein when the optical lens is in the long-focus state, the optical lens meets the following relation:
1.0≤TTL/EFLmax≤1.7, wherein
TTL is a total track length of the optical lens, and EFLmax is an effective focal length of the optical lens in the long-focus state.
16 . The imaging device according to claim 15 , wherein the optical lens meets the following relation:
0.01≤IH/EFLmax≤0.1, wherein
IH is an imaging height of the optical lens.
17 . A terminal, comprising an image processor and a camera module, wherein the image processor is communicatively connected to the camera module, the camera module is configured to: obtain image data, and input the image data into the image processor, and the image processor is configured to process the image data that is input to the image processor;
wherein the camera module comprises a photosensitive element, a driver, and an optical lens,
the optical lens comprises a first component, a second component, a third component, and a fourth component that are successively arranged from an object side to an image side and each comprise at least one lens,
the second component comprises a refraction member configured to change a transmission route of light transmitted from the first component by refraction, wherein the refraction member is disposed within the second component and located on a side of the second component facing away from the third component,
the third component and the fourth component are coaxially disposed along a common optical axis, wherein the common optical axis is aligned with a refracted path of the light transmitted from the first component after refraction by the second component,
an included angle is formed between optical axes of the third component and the fourth component and an optical axis of the first component,
a position of the second component relative to an imaging plane of the optical lens is fixed, and
the first component, the third component, and the fourth component are configured to move relative to the second component, so that the optical lens transitions between a long-focus state, a medium-focus state, a wide-angle state, and a micro-focus state, wherein the micro-focus state corresponds to a state in which a focal length of the optical lens is smaller than that in the wide-angle state;
wherein the photosensitive element is located on an image side of the optical lens and is located on an imaging plane of the optical lens, and the driver is configured to drive the first component, the third component, and the fourth component to move relative to the second component,
wherein, when the optical lens performs zooming from the wide-angle state to the long-focus state, the second component does not move, and the first component, the third component, and the fourth component move toward the object side, and
wherein, when the optical lens performs zooming from the wide-angle state to the micro-focus state, the second component does not move, the first component moves toward the image side, and the third component and the fourth component move toward the object side.
18 . The terminal according to claim 17 , wherein the terminal further comprises a housing, both the camera module and the image processor are accommodated in the housing, a light passing hole is disposed on the housing, the first component of the camera module faces the light passing hole, and when the driver drives the first component to move away from the second component, the first component can extend out of the housing by using the light passing hole.
19 . The terminal according to claim 17 , wherein when the optical lens is in the long-focus state, the optical lens meets the following relation:
1.0≤TTL/EFLmax≤1.7, wherein
TTL is a total track length of the optical lens, and EFLmax is an effective focal length of the optical lens in the long-focus state.
20 . The terminal according to claim 17 , wherein the optical lens meets the following relation:
0.01≤IH/EFLmax≤0.1, wherein
IH is an imaging height of the optical lens.