Optical imaging lens and imaging equipment
An optical imaging lens and lens technology, applied in the field of imaging lens, can solve problems such as inability to meet the needs of vehicle monitoring systems, poor recognition of long-distance targets, and unclear imaging of peripheral fields of view, achieving small distortion, good imaging performance, The effect of large aperture
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no. 1 example
[0078] see figure 1 , which is a schematic structural diagram of the optical imaging lens 100 provided in the first embodiment of the present invention. The optical imaging lens 100 sequentially includes from the object side to the imaging surface along the optical axis: a diaphragm ST, a first lens L1, a second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the seventh lens L7, the filter G1, and the protective glass G2.
[0079] The first lens L1 has negative refractive power, the object side S1 of the first lens is concave, and the image side S2 of the first lens is convex;
[0080] The second lens L2 has positive refractive power, the object side S3 of the second lens is concave, and the image side S4 of the second lens is convex;
[0081] The third lens L3 has a positive refractive power, and both the object side S5 and the image side S6 of the third lens are convex;
[0082] The fourth lens L4 has positive refractive power, and bo...
no. 2 example
[0098] see Figure 5 , a schematic structural diagram of the optical imaging lens 200 provided by the second embodiment of the present invention, the optical imaging lens 200 of this embodiment is substantially the same as the above-mentioned first embodiment, the main difference is that the object side S3 of the second lens is a plane, And parameters such as curvature radius, thickness, and refractive index of each lens are different.
[0099] Specifically, the relevant parameters of each lens of the optical imaging lens 200 provided in this embodiment are shown in Table 3.
[0100] table 3
[0101]
[0102] Table 4 shows the surface shape coefficients of each aspherical surface in the optical imaging lens 200 in this embodiment.
[0103] Table 4
[0104]
[0105] The MTF diagram, vertical-axis chromatic aberration diagram, and relative illuminance diagram of the optical imaging lens 200 provided in this embodiment are respectively as follows Image 6 , Figure 7 ,...
no. 3 example
[0110] see Figure 9, a schematic structural diagram of the optical imaging lens 300 provided by the third embodiment of the present invention, the optical imaging lens 300 of this embodiment is substantially the same as the above-mentioned first embodiment, the main difference is that the object side S3 of the second lens is a convex surface, And parameters such as curvature radius, thickness, and refractive index of each lens are different. Specifically, the related parameters of each lens of the optical imaging lens 300 provided in this embodiment are shown in Table 5.
[0111] table 5
[0112]
[0113] Table 6 shows the surface shape coefficients of each aspherical surface in the optical imaging lens 300 in this embodiment.
[0114] Table 6
[0115]
[0116] The MTF diagram, vertical axis chromatic aberration diagram, and relative illuminance diagram of the optical imaging lens 300 provided in this embodiment are respectively as follows Figure 10 , Figure 11 ,...
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