Title:
REGULAR-ANGLE TO TELEPHOTO LENS SYSTEM FOR TAKING IMAGES
Document Type and Number:
WIPO Patent Application WO/2018/098632
Kind Code:
A1
Abstract:
A six-piece optical lens system (10) comprising, in order from the object side surface (O) to the image side surface (I) a first lens element (110) with a positive refractive power having a convex object-side surface (110a), at least one of the object-side (110a) and an image-side (110b) surfaces of the first lens element (110) being aspheric; a second lens element (120) with a negative refractive power having a concave image-side surface (120b), at least one of an object-side (120a) and the image-side (120b) surfaces of the second lens element (120) being aspheric; a third lens element (130) with a positive refractive power having a convex object-side surface (130a), at least one of an object-side (130a) and the image-side (130b) surfaces of the third lens element (130) being aspheric; a stop; a fourth lens element (140) with a negative refractive power having a concave object-side surface (140a), at least one of the object-side (140a) and an image-side (140b) surfaces of the fourth lens element (140) being aspheric; a fifth lens element (150) having a concave image-side surface (150b), at least one of an object-side (150a) and the image-side (150b) surfaces of the fifth lens element (150) being aspheric; and a sixth lens element (160) with a negative refractive power having a concave image-side surface (160b), at least one of an object-side (160a) and the image-side (160b) surfaces of the sixth lens element (160) being aspheric. It satisfies the relation: 1.5 < f/|f1| < 2.5.
Inventors:
ANZAWA TAKUYA (JP)
Application Number:
PCT/CN2016/107739
Publication Date:
June 07, 2018
Filing Date:
November 29, 2016
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B13/18
Foreign References:
| CN104678537A | 2015-06-03 | |||
| CN105068221A | 2015-11-18 | |||
| CN105093491A | 2015-11-25 | |||
| CN104777592A | 2015-07-15 | |||
| US20160116715A1 | 2016-04-28 |
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