| 发明名称 | Fixed focus lens | ||
| 摘要 | A fixed focus lens includes an M group that is disposed at a center of the optical system and has a positive refractive power; an F group that is disposed farther on the image plane side than the M group, has a negative refractive power, and is moved along the optical axis during focusing; a V group that is disposed farther on the object side than the M group, has a negative refractive index, and is moved in a direction orthogonal to the optical axis during vibration control; and an FC group that is disposed farther on the object side than the V group and has a positive refractive power. The V group is configured by a single lens element, and during focusing, at least the FC group and the M group are fixed. | ||
| 申请公布号 | US8848291(B2) | 申请公布日期 | 2014.09.30 |
| 申请号 | US201213345916 | 申请日期 | 2012.01.09 |
| 申请人 | Tamron Co., Ltd. | 发明人 | Adachi Nobuyuki |
| 分类号 | G02B27/64;G02B9/34;G02B13/18;G02B9/64 | 主分类号 | G02B27/64 |
| 代理机构 | Foley & Lardner LLP | 代理人 | Foley & Lardner LLP |
| 主权项 | 1. A fixed focus lens comprising, sequentially from an object side: an FC group having a positive refractive power; a V group having a negative refractive power, and being moved in a direction orthogonal to an optical axis during vibration control; an M group having a positive refractive power; and an F group having a negative refractive power, and being moved along the optical axis during focusing; the V group is configured by a single lens element, and during focusing, at least the FC group and the M group are fixed. | ||
| 地址 | Saitama-shi JP | ||