Zoom lens, lens unit and camera
A zoom lens and lens technology, applied in optical elements, instruments, optics, etc., can solve the problems of not being able to achieve wide-angle focal length, not being able to meet wide-angle focal length and brightness at the same time, and large F-number at the wide-angle end. Ensure the relative aperture, the effect of good correction of various aberrations
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Embodiment 1
[0130] Table 1 shows the lens data of the zoom lens of Example 1. in addition, image 3 (a) represents the sectional view of the wide-angle end of the zoom lens of embodiment 1, image 3 (b) shows a sectional view of the middle of the zoom lens of Example 1, image 3 (c) is a sectional view showing the telephoto end of the zoom lens of Example 1. FIG. and, Figure 4 (a) an aberration diagram showing spherical aberration, astigmatism, and distortion at the wide-angle end of the zoom lens of Example 1, Figure 4 (b) an aberration diagram showing intermediate spherical aberration, astigmatism, and distortion of the zoom lens of Example 1, Figure 4 (c) An aberration diagram showing spherical aberration, astigmatism, and distortion at the telephoto end of the zoom lens of Example 1. FIG. In addition, in the following aberration diagrams, in the spherical aberration diagram, the solid line indicates the d-line, and the dotted line indicates the g-line, and in the astigmatism d...
Embodiment 2
[0148] The lens data of the zoom lens of Example 2 are shown in Table 2. in addition, Figure 5 (a) shows a sectional view of the wide-angle end of the zoom lens of Example 2, Figure 5 (b) shows a cross-sectional view of the middle of the zoom lens of Example 2, Figure 5 (c) shows a sectional view of the telephoto end of the zoom lens of Example 2. and, Figure 6 (a) an aberration diagram showing spherical aberration, astigmatism, and distortion at the wide-angle end of the zoom lens of Example 2, Figure 6 (b) an aberration diagram showing intermediate spherical aberration, astigmatism, and distortion of the zoom lens of Example 2, Figure 6 (c) An aberration diagram showing spherical aberration, astigmatism, and distortion at the telephoto end of the zoom lens of Example 2.
[0149] 【Table 2】
[0150] Example 2
[0151] f=4.43-9.65-21.05[wide angle, middle, telephoto]
[0152] Fno=2.88-4.46-5.17[wide angle, middle, telephoto]
[0153] Zoom ratio = 4.75
[0154] ...
Embodiment 3
[0166] The lens data of the zoom lens of Example 3 are shown in Table 3. in addition, Figure 7 (a) shows a cross-sectional view of the wide-angle end of the zoom lens of Example 3, Figure 7 (b) shows a cross-sectional view of the middle of the zoom lens of Example 3, Figure 7 (c) is a sectional view showing the telephoto end of the zoom lens of Example 3. FIG. and, Figure 8 (a) an aberration diagram showing spherical aberration, astigmatism, and distortion at the wide-angle end of the zoom lens of Example 3, Figure 8 (b) an aberration diagram showing intermediate spherical aberration, astigmatism, and distortion of the zoom lens of Example 3, Figure 8 (c) An aberration diagram showing spherical aberration, astigmatism, and distortion at the telephoto end of the zoom lens of Example 3. FIG.
[0167] 【table 3】
[0168] Example 3
[0169] f=4.42-9.66-20.98[wide angle, middle, telephoto]
[0170] Fno=2.88-4.49-5.01[wide angle, middle, telephoto]
[0171] Zoom rati...
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Abstract
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