Lens system
A lens and lens technology, applied in the field of lens systems, can solve problems such as difficult correction of aberrations in lens systems, poor imaging quality, etc.
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no. 1 approach
[0043] Each optical element of the lens system 100 satisfies the conditions in Table 1 and Table 2, and 2ω=74°.
[0044] Table 1
[0045]
[0046]
[0047] Table 2
[0048] the surface
[0049] Field curvature, distortion and spherical aberration of the lens system 100 are as follows Figure 2 to Figure 4 shown. figure 2 The meridian field curvature and sagittal field curvature values are all controlled within the range of (-0.10mm, 0.10mm). image 3 The distortion rate is controlled in the range of (-2%, 2%). Figure 4 Among them, the spherical aberration values observed for f-line (value 435.8nm), d-line (value 587.6nm), and c-line (value 656.3nm) respectively. Generally speaking, the spherical aberration generated by the lens system 100 of this embodiment for visible light is within the range of (-0.05 mm, 0.05 mm). It can be seen that the aberration, field curvature and distortion of the lens system 100 can be well corrected.
no. 2 approach
[0051] Each optical element of the lens system 100 satisfies the conditions of Table 3 and Table 4, and 2ω=72°.
[0052] table 3
[0053] lens system 100
Radius of curvature (mm)
Thickness (mm)
Refractive index
Abbe number
The surface of the first lens 10 on the object side
1.406081
0.642755
1.543
56.803
The image-side surface of the first lens 10
3.657686
0.228189
-
-
The surface of the second lens 20 on the object side
1.25147
0.507969
1.632
23.415
The surface of the second lens 20 on the image side
2.54427
0.08
-
-
The surface of the third lens 30 on the object side
7.841619
0.822438
1.543
56.803
The surface of the third lens 30 on the image side
4.62433
0.206411
-
-
The fourth lens 40 is on the object side surface
1.810916
0.599514
1.632
...
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