Optical lens and imaging device
A technology of optical lens and imaging surface, which is applied in the field of imaging lens, can solve the problems of not being able to better meet the design requirements of long focal length and high pixel, and achieve the effect of long focal length, high pixel and compact structure
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no. 1 example
[0076] see figure 1 , which is a schematic structural view of the optical lens 100 provided in the first embodiment of the present invention, the optical lens 100 includes in sequence from the object side to the imaging surface along the optical axis: a stop ST, a first lens L1, a second lens L2, a second lens Three lenses L3, a fourth lens L4, a fifth lens L5 and a filter G1.
[0077] Wherein, the first lens L1 has positive refractive power, the object side S1 of the first lens is a convex surface, and the image side S2 of the first lens is a convex surface;
[0078] The second lens L2 has a negative refractive power, the object side S3 of the second lens is a convex surface, and the image side S4 of the second lens is a concave surface;
[0079] The third lens L3 has negative refractive power, the object side S5 of the third lens is concave at the near optical axis, and the image side S6 of the third lens is concave at the near optical axis;
[0080] The fourth lens L4 has...
no. 2 example
[0093] see Figure 4 , which is a schematic structural view of the optical lens 200 provided in this embodiment. The structure of the optical lens 200 provided in the second embodiment of the present invention is roughly the same as that of the optical lens 100 in the first embodiment, except that the first lens The image side S2 of the third lens is concave at the near optical axis, the object side S5 of the third lens is convex at the near optical axis, the distance from the inflection point on the image side S8 of the fourth lens to the optical axis is 1.134mm, and the inflection point The sagittal height at is 0.142 mm, the image side S10 of the fifth lens is concave at the near optical axis, and the curvature radius and air gap of each lens are different.
[0094] The relevant parameters of each lens in the optical lens 200 provided in this embodiment are shown in Table 3.
[0095] table 3
[0096]
[0097] The surface coefficients of each aspheric surface of the opt...
no. 3 example
[0104] see Figure 7 , which is a schematic structural view of the optical lens 300 provided in this embodiment, the structure of the optical lens 300 provided in the third embodiment of the present invention is roughly the same as that of the optical lens 100 in the first embodiment, the difference is that the first lens The image side S2 of the third lens is concave, the object side S5 of the third lens is convex, the distance from the inflection point on the image side S8 of the fourth lens to the optical axis is 1.042mm, and the sagittal height on the inflection point is 0.169mm, and The radii of curvature, air gaps, and the like are different for each lens.
[0105] The relevant parameters of each lens in the optical lens 300 provided in this embodiment are shown in Table 5.
[0106]table 5
[0107]
[0108] Table 6 shows the surface coefficients of each aspheric surface of the optical lens 300 in this embodiment.
[0109] Table 6
[0110]
[0111] In this embod...
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