| 摘要 |
An image pickup lens includes a first lens having a positive refractive power, a second meniscus lens having a negative refractive power, a third lens, a fourth meniscus lens having a negative refractive power, and a fifth lens having both sides formed as aspheric surfaces with a positive refractive power, wherein an F-value is 2.41 or smaller. |
| 主权项 |
1. An image pickup lens composed of five lenses for a solid imaging element, comprising, in order from an object side to an image side, a first lens having a positive refractive power, a second lens having a meniscus shape with a negative refractive power, a third lens, a fourth lens having a meniscus shape with a negative refractive power, and a fifth lens having both sides formed as aspheric surfaces with a positive refractive power;
wherein an F-value is 2.41 or smaller. |
