Zoom lens
US11409087B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2021 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Apr 12, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/0045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure relates to optical lens, and provides a zoom lens including, from an object side to an image side in sequence: a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power, a fifth lens group having a negative refractive power; distances between adjacent two of the first lens, the second lens, the third lens, the fourth lens and the fifth lens group are variable in the direction of the optical axis; the fifth lens group including a fifth lens having a positive refractive power and a sixth lens having a negative refractive power; wherein the zoom lens satisfies conditions of: f_Tele/f_Wide>1.8; 4.78≤LB_Tele/LB_Wide≤6.20; 76.00≤ν1≤82.00; 58.00≤ν2≤78.00; and 76.00≤ν6≤82.00.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.