Title:
撮像レンズ
Document Type and Number:
Japanese Patent JP6529320
Kind Code:
B2
Abstract:
A compact high-resolution imaging lens which meets the demands for low-profileness, a low F-value and a wide field of view and corrects aberrations properly. It includes, in order from the object side: a first positive lens having a convex object-side surface; a second negative lens having a convex object-side surface; a third lens; a fourth positive lens; and a fifth negative double-sided aspheric lens having a concave image-side surface. When Fno denotes F-number, ih maximum image height, TTL total track length, f45 the composite focal length of the fourth and fifth lenses, r5 and r6 the curvature radii of the third lens object-side and image-side surfaces, r7 and r8 the curvature radii of the fourth lens object-side and image-side surfaces, and r9 and r10 the curvature radii of the fifth lens object-side and image-side surfaces, respectively, it satisfies the following conditions: Fno≦2.4; TTL/2ih<0.9; f45<0; 0
More Like This:
WO/2008/142808 | IMAGING LENS |
JP5353267 | Macro lens and camera |
WO/2019/137246 | OPTICAL IMAGING LENS |
Inventors:
Hashimoto Masaya
Nao Fukaya
Nao Fukaya
Application Number:
JP2015082714A
Publication Date:
June 12, 2019
Filing Date:
April 14, 2015
Export Citation:
Assignee:
Kantatsu Co., Ltd.
International Classes:
G02B13/00; G02B13/18
Domestic Patent References:
JP2014153575A | ||||
JP2010262270A | ||||
JP2014081626A |
Foreign References:
WO2013031122A1 | ||||
WO2015041123A1 | ||||
WO2014132796A1 | ||||
US20130258164 | ||||
US20130057966 | ||||
WO2010024198A1 |