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Optical system, image capturing device and electronic device
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An optical system, optical axis technology, applied in optics, optical components, instruments, etc., can solve the problems of large F number and low imaging performance.
Pending Publication Date: 2021-03-05
JIANGXI JINGCHAO OPTICAL CO LTD
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Abstract
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[0004] Based on this, it is necessary to provide an improved optical system for the problems of large F number and low imaging performance of traditional vehicle-mounted cameras.
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Embodiment 1
[0074] Refer to the following Figure 1 to Figure 2C The optical system of Embodiment 1 of the present application is described.
[0075] figure 1 A schematic structural view of the optical system of Example 1 is shown. Such as figure 1 As shown, the optical system sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and an imaging surface along the optical axis from the object side to the image side S17.
[0076] The first lens L1 has a negative refractive power, the object side S1 and the image side S2 are both spherical, wherein the object side S1 is convex, and the image side S2 is concave.
[0077] The second lens L2 has positive refractive power, and its object side S3 and image side S4 are both spherical surfaces, wherein the object side S3 is convex, and the image side S4 is convex.
[0078] The third lens L3 has negative refractive power, and its object side S5 and image side S6 are both sphe...
Embodiment 2
[0098] Refer to the following Figure 3 to Figure 4C The optical system of Example 2 of the present application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural diagram of the optical system of Embodiment 2 of the present application is shown.
[0099] Such as image 3 As shown, the optical system sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and an imaging surface along the optical axis from the object side to the image side S17.
[0100] The first lens L1 has a negative refractive power, the object side S1 and the image side S2 are both spherical, wherein the object side S1 is convex, and the image side S2 is concave.
[0101] The second lens L2 has positive refractive power, and its object side S3 and image side S4 are both spherical surfaces, wherein the object side S3 is convex, and the ...
Embodiment 3
[0122] Refer to the following Figure 5 to Figure 6C The optical system of Example 3 of the present application is described. In this embodiment, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. Figure 5 A schematic structural diagram of the optical system of Embodiment 3 of the present application is shown.
[0123] Such as Figure 5 As shown, the optical system sequentially includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and an imaging surface along the optical axis from the object side to the image side S17.
[0124] The first lens L1 has a negative refractive power, the object side S1 and the image side S2 are both spherical, wherein the object side S1 is convex, and the image side S2 is concave.
[0125] The second lens L2 has positive refractive power, and its object side S3 and image side S4 are both spherical surfaces, wherein the object side S3 is convex, and th...
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Abstract
The invention discloses an optical system. The optical system sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side along an optical axis; the first lens has negative refractive power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concavesurface; the second lens has positive refractive power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; the third lens has negative refractive power, the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a concave surface; the fourth lens has positive refractive power; the fifth lens element has positive refractive power; the sixth lens has negative refractive power, and the object side surface of the sixth lens is a concavesurface; a diaphragm is arranged between the second lens and the third lens; the optical system satisfies the relational expression that f / D<=1.6, wherein D is the entrance pupildiameter of the optical system, and f is the effective focal length of the optical system. The invention further relates to an image capturing device and an electronic device.
Description
technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical system, an imaging device and an electronic device. Background technique [0002] With the development of science and technology, the market demand for high-quality vehicle or surveillance camera lenses is gradually increasing. Generally, lenses with a smaller F number can collect more light information, have smaller optical aberrations and better imaging quality, so this type of lens is gradually favored by the market. [0003] However, the inventors have found that in existing vehicle-mounted cameras and surveillance cameras, the F-number of the lens is generally large and the imaging effect is not good, especially in the case of insufficient light (such as rainy days, dusk, etc.) or when the vehicle or the bracket shakes. Under the current situation, the F-number of traditional vehicle-mounted and surveillance cameras can no longer meet the higher imaging r...
Claims
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Application Information
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