Zoom lens and imaging device
A zoom lens and lens technology, applied in the field of optics, can solve the problems of zoom lens volume increase, achieve the effects of improving chromatic aberration and astigmatism, reducing excessive volume, and increasing imaging quality
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Embodiment 1
[0062] like figure 1 , Figure 5 and Figure 9 As shown, a zoom lens, the zoom lens includes sequentially from the object plane side to the image plane side:
[0063] The first lens group G1 with positive refractive power, the second lens group G2 with negative refractive power, the diaphragm STO, the third lens group G3 with positive refractive power, the fourth lens group G4, and the fifth lens group G5 with positive refractive power .
[0064] The second lens group G2, the fourth lens group G4, and the fifth lens group G5 move in the direction of the main optical axis of the zoom lens.
[0065] The fourth lens group G4 includes one lens with positive refractive power and one lens with negative refractive power in sequence from the object surface side to the image surface side.
[0066] The zoom lens satisfies the following conditional formula:
[0067] ft>175mm;
[0068] TTL<135mm.
[0069] Wherein, ft is the focal length of the zoom lens in the telephoto state, and ...
Embodiment 2
[0102] like Figure 1 to Figure 4 As shown, a zoom lens, the zoom lens is composed of a first lens group G1 with positive refractive power, a second lens group G2 with negative refractive power, a diaphragm STO, a positive refractive power The third lens group G3, the fourth lens group G4, the fifth lens group G5 with positive refractive power and the auxiliary component G6 are composed.
[0103] The second lens group G2, the fourth lens group G4, and the fifth lens group G5 move in the direction of the main optical axis of the zoom lens.
[0104] The first lens group G1 includes sequentially from the object plane side to the image plane side:
[0105] The first lens L1 with negative refractive power, the second lens L2 with positive refractive power, the third lens L3 with positive refractive power, and the fourth lens L4 with positive refractive power.
[0106] The second lens group G2 includes sequentially from the object plane side to the image plane side:
[0107] The ...
Embodiment 3
[0134] like Figure 5 to Figure 8 As shown, a zoom lens, the zoom lens includes sequentially from the object plane side to the image plane side:
[0135] The first lens group G1 with positive refractive power, the second lens group G2 with negative refractive power, the diaphragm STO, the third lens group G3 with positive refractive power, the fourth lens group G4, and the fifth lens group G5 with positive refractive power and auxiliary component G6.
[0136] The second lens group G2, the fourth lens group G4, and the fifth lens group G5 move in the direction of the main optical axis of the zoom lens.
[0137] The first lens group G1 includes sequentially from the object plane side to the image plane side:
[0138] The first lens L1 with negative refractive power, the second lens L2 with positive refractive power, the third lens L3 with positive refractive power, and the fourth lens L4 with positive refractive power.
[0139] The second lens group G2 includes sequentially f...
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