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1. (WO2017155303) PHOTOGRAPHING LENS OPTICAL SYSTEM

Pub. No.:    WO/2017/155303    International Application No.:    PCT/KR2017/002513
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 09 00:59:59 CET 2017
IPC: G02B 9/60
G02B 13/00
G02B 13/18
Applicants: ACE SOLUTECH CO., LTD.
주식회사 에이스솔루텍
Inventors: JUNG, Pil Sun
정필선
KIM, Dong Young
김동영
AN, Chi Ho
안치호
Title: PHOTOGRAPHING LENS OPTICAL SYSTEM
Abstract:
A photographing lens optical system is disclosed. The disclosed lens optical system comprises first, second, third, fourth and fifth lenses sequentially arranged from an object in the direction of an image sensor. The first lens can have a negative (-) refractive power and have a concave output surface with respect to the image sensor. The lens optical system can satisfy the conditional formula, 100° < FOV < 200°, and/or the conditional formula, 1 < TTL / ImgH < 2, wherein FOV denotes an angle of view of the lens optical system, TTL denotes a distance from the incident surface of the first lens to the image sensor, and ImgH denotes a diagonal length of a maximum pixel area of the image sensor.