Zoom lens and camera
A zoom lens and lens technology, applied in image communication, equipment, television, etc., can solve the problems of small chromatic aberration correction effect of the second lens group, insufficient wide-angle requirements, etc., to achieve good images and high magnification effect
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Embodiment 1
[0082] A cross-sectional view showing the configuration of the zoom lens of Example 1 is shown in image 3 middle. image 3 In , the upper, middle, and lower sections with marks W, M, and T on the left respectively show the arrangement and configuration of each lens group at the wide-angle end, intermediate focal length position, and telephoto end, respectively.
[0083] The schematic configuration of the zoom lens of Example 1 is as follows. That is, the zoom lens of Embodiment 1 consists of the first lens group G1 having positive refractive power, the second lens group G2 having negative refractive power, the third lens group G3 having positive refractive power, and the third lens group G3 having positive refractive power in order from the object side. The focal power of the fourth lens group G4 constitutes. The aperture stop St is arranged on the most object side of the fourth lens group G4. and also, image 3 The aperture stop St shown does not indicate its size and sh...
Embodiment 2
[0112] Figure 4 A lens configuration diagram of the zoom lens of Example 2 is shown in . The schematic configuration of the zoom lens of the second embodiment is substantially the same as that of the zoom lens of the first embodiment described above. Table 4, Table 5, and Table 6 show basic lens data, aspheric coefficients, various elements, and variable surface intervals of the zoom lens of Example 2, respectively. Figure 10 (A)~ Figure 10 Each aberration diagram of the zoom lens of Example 2 is shown in (L).
[0113] 【Table 4】
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[0116] 【table 5】
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[0119] 【Table 6】
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Embodiment 3
[0122] Figure 5 A lens configuration diagram of the zoom lens of Example 3 is shown in . The schematic configuration of the zoom lens of Example 3 is substantially the same as that of the zoom lens of Example 1 above, but differs in that the fourth lens group G4 is composed of 15 lenses. Table 7, Table 8, and Table 9 show basic lens data, aspheric coefficients, various elements, and variable surface intervals of the zoom lens of Example 3, respectively. Figure 11 (A)~ Figure 11 Each aberration diagram of the zoom lens of Example 3 is shown in (L).
[0123] 【Table 7】
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[0126] 【Table 8】
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[0129] 【Table 9】
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