Optical imaging lens and imaging equipment
An optical imaging lens and lens technology, applied in the field of imaging lens, achieves the effects of good thermal stability, convenient assembly, and reliable quality
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no. 1 example
[0070] see figure 1 , is a schematic structural diagram of the optical imaging lens 100 provided by 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 first lens L1, a second lens L2, a diaphragm ST, a first lens Three lenses L3, fourth lens L4, fifth lens L5, sixth lens L6, filter G1 and protective glass G2.
[0071] 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;
[0072] The second lens L2 has positive refractive power, and both the object side S3 and the image side S4 of the second lens are convex;
[0073] The third lens L3 has negative refractive power, and both the object side S5 and the image side of the third lens are concave;
[0074] The fourth lens L4 has positive refractive power, the object side of the fourth lens is convex, and the image side S7 ...
no. 2 example
[0086] The structure of the optical imaging lens of the second embodiment is almost the same as that of the optical imaging lens 100 of the first embodiment, the difference is that the curvature radius and material selection of each lens of the optical imaging lens in this embodiment are different. The relevant parameters of the lens are shown in Table 2.
[0087] Table 2
[0088]
[0089] The field curvature diagram, F-tanθ distortion diagram, and vertical-axis chromatic aberration diagram of the optical imaging lens in this embodiment are respectively as follows Figure 5 , Image 6 and Figure 7 shown.
[0090] Depend on Figure 5 It can be seen that the offset of field curvature is controlled within ±0.04 mm, indicating that the optical imaging lens can effectively correct the aberration of the fringe field of view and the secondary spectrum of the entire image plane.
[0091] Depend on Image 6 It can be seen that the optical distortion of the optical imaging len...
no. 3 example
[0094] The structure of the optical imaging lens of the third embodiment is roughly the same as that of the optical imaging lens 100 of the first embodiment, the difference is that the materials, curvature radius, thickness, etc. of each lens are also different. The specific parameters of each lens are shown in the table 3 shown.
[0095] table 3
[0096]
[0097] The field curvature diagram, F-tanθ distortion diagram, and vertical-axis chromatic aberration diagram of the optical imaging lens in this embodiment are respectively as follows Figure 8 , Figure 9 and Figure 10 shown.
[0098] Depend on Figure 8 It can be seen that the offset of field curvature is controlled within ±0.04 mm, indicating that the optical imaging lens can effectively correct the aberration of the fringe field of view and the secondary spectrum of the entire image plane.
[0099] Depend on Figure 9 It can be seen that the optical distortion of the optical imaging lens in the full field of ...
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