| 发明名称 | Optical lens system | ||
| 摘要 | An optical lens system includes sequentially from an object side to an image plane side: a first lens having a negative refractive power and an object side surface that is convex toward the object side; a second lens having a negative refractive power and an object side surface that is convex toward the object side; a third lens having a positive refractive power and an image side surface that is convex toward the image side; a fourth lens having a negative refractive power and an object side surface that is concave toward the object side; and a fifth lens having a positive refractive power and an image side surface that is convex toward the image side. | ||
| 申请公布号 | US9329364(B2) | 申请公布日期 | 2016.05.03 |
| 申请号 | US201414583959 | 申请日期 | 2014.12.29 |
| 申请人 | KOLEN CO., LTD. | 发明人 | Ahn Chi Ho;Song Kyoung Soo;Kim Ji Eun;Kang Chan Goo;Bae Seong Hee |
| 分类号 | G02B3/02;G02B13/18;G02B9/60;G02B13/00;G02B13/06;G02B13/04;G02B3/04;G02B5/00 | 主分类号 | G02B3/02 |
| 代理机构 | St. Onge Steward Johnston & Reens, LLC | 代理人 | St. Onge Steward Johnston & Reens, LLC |
| 主权项 | 1. An optical lens system comprising sequentially from an object side to an image plane side: a first lens having a negative refractive power and an object side surface that is convex toward the object side; a second lens having a negative refractive power and an object side surface that is convex toward the object side; a third lens having a positive refractive power and an image side surface that is convex toward the image side; a fourth lens having a negative refractive power and an object side surface that is concave toward the object side; and a fifth lens having a positive refractive power and an image side surface that is convex toward the image side, wherein the optical lens system satisfies the following condition 0.20<|tan θ/f|<0.21, where f denotes a focal length of the optical lens system, and θ denotes a viewing angle of the optical lens system. | ||
| 地址 | KR | ||