Zoom optical system
An optical system and variable focal length technology, which is applied in the field of variable focal length optical systems, can solve the problems of long overall length, complex structure of the variable focal length optical system, and inability to meet the development trend of miniaturization and miniaturization of electronic equipment, and achieve the goal of reducing the length. Effect
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[0205] Table 1
[0206]
[0207]
[0208] It should be noted that in Table 1, T4, T6, T11, and T15 listed are the distance values when the first embodiment is in the medium focus state, and in the telephoto state, T4=2.001, T6=4.738, T11=8.071 , T15=0.96; in short focus state, T4=11.498, T6=2.915, T11=0.5, T15=0.963.
[0209] Table 2
[0210]
[0211] table 3
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[0213]
[0214] Table 4
[0215]
[0216]
[0217] It should be noted that the height of the formed image is 2.45 mm using the embodiment of the parameters in Table 1-Table 3.
[0218] Such as figure 1 As shown, it is a schematic structural view of the embodiment using the parameters in Table 1-3 in the short-focus state, Figure 4 The vertical axis chromatic aberration diagram in this state is shown, Figure 7 The curves of field curvature and distortion in this state are shown; figure 2 It is a schematic diagram of the structure of the embodiment using the parameters in Table 1-...
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