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Optical imaging system
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An optical imaging system and optical axis technology, applied in optics, optical components, instruments, etc., can solve the problems of increasing the difficulty of lens design and limiting the total length of the lens, and achieve the effects of good imaging quality, low sensitivity, and high relative brightness
Pending Publication Date: 2018-11-06
ZHEJIANG SUNNY OPTICAL CO LTD
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Abstract
Description
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Problems solved by technology
Portable electronic products tend to be miniaturized, which further limits the total length of the lens; at the same time, mobile terminals have higher and higher requirements for the relative brightness of the lens, which further increases the difficulty of lens design
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Embodiment 1
[0062] Refer to the following Figure 1 to Figure 2D An optical imaging system according to Embodiment 1 of the present application is described. figure 1 A schematic structural diagram of an optical imaging system according to Embodiment 1 of the present application is shown.
[0063] Such as figure 1 As shown, the optical imaging system according to the exemplary embodiment of the present application sequentially includes a stop STO, a first lens E1, a second lens E2, a third lens E3, and an aberration correction element NE along the optical axis from the object side to the image side. , the fourth lens E4, the fifth lens E5, the filter E6 and the imaging surface S15.
[0064] The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is concave, wherein the image side S2 may have an inflection point. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is convex. The third lens E3...
Embodiment 2
[0093] Refer to the following Figure 3 to Figure 4D An optical imaging system according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, for the sake of brevity, descriptions similar to those in Embodiment 1 will be omitted. image 3 A schematic structural diagram of an optical imaging system according to Embodiment 2 of the present application is shown.
[0094] Such as image 3 As shown, the optical imaging system according to the exemplary embodiment of the present application sequentially includes a stop STO, a first lens E1, a second lens E2, a third lens E3, and an aberration correction element NE along the optical axis from the object side to the image side. , the fourth lens E4, the fifth lens E5, the filter E6 and the imaging surface S15.
[0095] The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is concave, wherein the image side S2 may have an inflection ...
Embodiment 3
[0111] Refer to the following Figure 5 to Figure 6D An optical imaging system according to Embodiment 3 of the present application is described. Figure 5 A schematic structural diagram of an optical imaging system according to Embodiment 3 of the present application is shown.
[0112] Such as Figure 5 As shown, the optical imaging system according to the exemplary embodiment of the present application sequentially includes a stop STO, a first lens E1, a second lens E2, a third lens E3, and an aberration correction element NE along the optical axis from the object side to the image side. , the fourth lens E4, the fifth lens E5, the filter E6 and the imaging surface S15.
[0113] The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is concave, wherein the image side S2 may have an inflection point. The second lens E2 has positive refractive power, its object side S3 is convex, and its image side S4 is convex. The third lens ...
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Abstract
The invention discloses an optical imagingsystem. The imaging system comprises a first lens set with positive focal power, an aberration correcting element, and a second lens with negative focal power, wherein the first lens set, the aberration correcting element and the second lens set are sequentially arranged from an object side to an image side along an optical axis; the first lens set comprises a first lens with positive focal power, a second lens with positive focal power, and a third lens with negative focal power; the first lens, the second lens and the third lens are sequentially arranged from the object side to the image side along the optical axis; the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the object side surface of the second lens is a convex surface; the image side surface of the third lens is a concave surface; the second lens set comprises a fourth lens with focal power, and a fifthlens with focal power; the fourth lens and the fifth lens are sequentially arranged from the object side to the image side along the optical axis; and the image side surface of the fifth lens is a concave surface; the aberration correcting element does not have the focal power; the object side surface and the image side surface of the aberration correcting element are aspheric surfaces; the curvature radius R3 of the object side surface of the second lens and the curvature radius R6 of the image side surface of the third lens meet that R6 / R3 is more than 1.5 and less than 3.
Description
technical field [0001] The present application relates to an optical imagingsystem, and more specifically, the present application relates to an optical imaging system including six optical elements (ie, five lenses and one aberration correction element). Background technique [0002] With the development of science and technology, the market demand for camera lenses suitable for portable electronic products is gradually increasing. Portable electronic products tend to be miniaturized, which further limits the total length of the lens; at the same time, mobile terminals have higher and higher requirements for the relative brightness of the lens, which further increases the difficulty of lens design. At present, photosensitive elements commonly used in optical systems include charge-coupled device (CCD) and complementary metal-oxidesemiconductor (complementary metal-oxidesemiconductor, CMOS) image sensors. These devices are gradually decreasing in size while improving thei...
Claims
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Application Information
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