| 发明名称 |
LENS ASSEMBLY FOR OPTICAL IMAGING |
| 摘要 |
The invention provides an optical imaging lens assembly comprising, in order from an object-side to an image side, a first aspherical positive lens element and a second aspherical negative lens element, each comprising an object-side surface and an image-side surface. Elements of the optical imaging lens assembly may be configured to satisfy the relations (i) T<1.2 f, (ii) 1.1<f/f1<1.5, (iii) −1.5<f/f2<−0.6, (iv) 0.2<R1/f<0.5, and (v) −0.25<K1<−0.05, wherein f is focal length of the lens assembly, f1 is focal length of the first lens element, f2 is focal length of the second lens element, R1 is radius of curvature on the object-side surface of the first lens element, K1 is conic of the object-side surface of the first lens element, and T is total track length of the optical lens. |
| 申请公布号 |
US2015301318(A1) |
申请公布日期 |
2015.10.22 |
| 申请号 |
US201414258575 |
申请日期 |
2014.04.22 |
| 申请人 |
DELTA ID INC. |
发明人 |
Ivanisov Alexander;Trygubov Eduard |
| 分类号 |
G02B13/18;H04N5/225;G02B9/10 |
主分类号 |
G02B13/18 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical imaging lens assembly comprising, in order from an object-side to an image side:
a first aspherical positive lens element comprising an object-side surface and an image-side surface; and a second aspherical negative lens element comprising an object-side surface and an image-side surface; wherein elements of the optical imaging lens assembly are configured to satisfy the relations: T<1.2f; 1.1<f/f1<1.5; −1.5<f/f2<−0.6; 0.2<R1/f<0.5; and −0.25<K1<−0.05; and wherein f is focal length of the optical imaging lens assembly, f1 is focal length of the first lens element, f2 is focal length of the second lens element, R1 is radius of curvature on the object-side surface of the first lens element, K1 is conic of the object-side surface of the first lens element, T1 is thickness of the first lens element, T2 is distance between the image-side surface of the first lens element and the object-side surface of the second lens element, T3 is thickness of the second lens element, T4 is distance between the image-side surface of the second lens element and an image surface, and T is total track length of the optical lens assembly such that T=T1+T2+T3+T4. and wherein T1, T2, T3 and T4 are distances measured between points of intersection of respective lens surfaces and optical axis of the optical lens assembly. |
| 地址 |
Fremont CA US |
