Zoom lens and imaging device
CN115335746BActive Publication Date: 2026-10-16SONY GROUP CORP
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Patent Information
- Application Number
- CN202180023789.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-03-31
- Filing Date
- 2021-03-19
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2041-03-19
AI Technical Summary
Benefits of technology
[0016] In one embodiment of the zoom lens or camera device disclosed herein, three or more groups are included as a whole, thereby optimizing the structure of each lens group in a way that allows for easy focusing while minimizing changes in the field of view and aberrations during focusing.
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Abstract
A zoom lens of the present disclosure has, in order from an object side to an image plane side, a first lens group in which a negative meniscus lens having a convex surface toward the object side is disposed closest to the object side and has a negative refractive power, a second lens group having a negative refractive power and moving toward the image plane side at the time of focusing, an aperture stop as a main stop, and a subsequent group including at least one lens group having a positive refractive power, the interval between adjacent lens groups changing with respect to each other when zooming from a wide angle end to a telephoto end, and satisfying the following conditional expression, f1 being the focal length of the first lens group and f2 being the focal length of the second lens group. 0.2 < f1 / f2 < 0.9 … (1).
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