发明名称 |
Imaging system and imaging optical system |
摘要 |
An optical system includes a central portion having a magnification per unit angle of view which increases from a center to an outside at an increase rate and a circumferential portion being outside the central portion and having a magnification per unit of view which increases from the central portion to an outside at an increase rate smaller than the increase rate of the central portion. |
申请公布号 |
US9261679(B2) |
申请公布日期 |
2016.02.16 |
申请号 |
US201414503052 |
申请日期 |
2014.09.30 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
Masuda Kensuke;Terao Noriyuki;Irino Yoshiaki;Tanaka Tomonori;Imae Nozomi;Harada Toru;Takenaka Hirokazu;Yamamoto Hideaki;Sawaguchi Satoshi;Satoh Hiroyuki |
分类号 |
G02B13/06;H04N5/232;H04N5/225;G02B5/04 |
主分类号 |
G02B13/06 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. An optical system including at least one lens, the optical system comprising:
a central portion having a magnification per unit angle of view which increases as a distance from a center increases; and a circumferential portion being outside the central portion, in which an increase rate of a magnification per unit angle of view decreases as a distance from the central portion increases. |
地址 |
Tokyo JP |