| 发明名称 | Lens assembly | ||
| 摘要 | Provided is a lens assembly including: a first lens, a second lens, a third lens, a fourth lens, a fifth lens from an object side of the lens assembly to an image side of the lens assembly in turn. The first lens is of a negative refracting power, an object side thereof is of a convexity, an image side thereof is of a concavity. The second lens is of a positive refracting power, an image side thereof is of a convexity. The third lens is of a negative refracting power, an image side thereof is of a concavity. The fourth lens is of a positive refracting power, an image side thereof is of a convexity. The fifth lens is of a negative refracting power, an object side thereof is of a convexity, an image side thereof is of a concavity. The lens assembly meets: 0<(R3+R4)/(R3−R4)<1.2 and 7<T12/T23<25. | ||
| 申请公布号 | US9529179(B2) | 申请公布日期 | 2016.12.27 |
| 申请号 | US201514777698 | 申请日期 | 2015.01.30 |
| 申请人 | Zhejiang Sunny Optics Co., Ltd. | 发明人 | Huang Lin;Dai Fujian |
| 分类号 | G02B7/02;G02B13/00;G02B13/06;G02B13/18;G02B9/60;H04N13/02 | 主分类号 | G02B7/02 |
| 代理机构 | Lerner, David, Littenberg, Krumholz & Mentlik, LLP | 代理人 | Lerner, David, Littenberg, Krumholz & Mentlik, LLP |
| 主权项 | 1. A lens assembly, comprising a first lens, a second lens, a third lens, a fourth lens, and a fifth lens from an object side of the lens assembly to an image side of the lens assembly in turn, wherein the first lens is of a negative refracting power, an object side of the first lens is of a convexity, an image side of the first lens is of a concavity; the second lens is of a positive refracting power, an image side of the second lens is of a convexity; the third lens is of a negative refracting power, an image side of the third lens is of a concavity; the fourth lens is of a positive refracting power, an image side of the fourth lens is of a convexity; and the fifth lens is of a negative refracting power, an object side of the fifth lens is of a convexity, an image side of the fifth lens is of a concavity, and the object side is provided with one inflection point, a diaphragm is arranged between the first lens and the second lens, the lens assembly meets the following formulas: 0<(R3+R4)/(R3−R4)<1.2; and7<T12/T23<25, wherein R3 represents a curvature radius of the object side of the second lens, R4 represents a curvature radius of the image side of the second lens, T12 represents a distance between the first lens and the second lens in a direction of an optical axis, and T23 represents a distance between the second lens and the third lens in the direction of the optical axis. | ||
| 地址 | CN | ||