Title:
ENTIRE CELESTIAL SPHERE-TYPE IMAGE-CAPTURING SYSTEM AND IMAGE-CAPTURING OPTICAL SYSTEM
Document Type and Number:
Japanese Patent JP2019074758
Kind Code:
A
Abstract:
To reduce parallax of two image-capturing units that constitute an image-capturing system.SOLUTION: An entire celestial sphere-type image-capturing system in which two image-capturing systems of the same construction having a wide-angle lens whose view angle is wider than 180 degrees and an image-capturing sensor for capturing an image by the wide-angle lens are combined, and images captured by each image-capturing system are synthesized and an image within 4π radian of solid angle is obtained. The wide-angle lens of each image-capturing system, with a front group, a reflection surface, and a rear group arranged from an object side toward an image side, bends an optical axis of the front group toward the rear group by the reflection surface, two wide-angle lenses being combined so that the optical axes of the front group are matched or brought closer, a direction of the front group is reversed, and the optical axes of the rear group are parallel to each other and a directions of the rear group are reversed to each other. The reflection surface RF is a reflecting film used in common to the two wide-angle lenses, which, together with both of two optical equivalent transparent members PA and PB holding it therebetween, constitutes a common reflection surface member, the reflection surface member being held by a common lens barrel which is assembled each front group and each rear group of the two wide-angle lenses.SELECTED DRAWING: Figure 1
Inventors:
SATO HIROYUKI
TERAO NORIYUKI
IRINO YOSHIAKI
TANAKA TOMONORI
IMAE NOZOMI
HARADA TORU
TAKENAKA HIROICHI
YAMAMOTO HIDEAKI
MASUDA KENSUKE
SAWAGUCHI SATOSHI
BESSHO DAISUKE
SHOHARA MAKOTO
ITO YOICHI
TAKASU SHUSAKU
TERAO NORIYUKI
IRINO YOSHIAKI
TANAKA TOMONORI
IMAE NOZOMI
HARADA TORU
TAKENAKA HIROICHI
YAMAMOTO HIDEAKI
MASUDA KENSUKE
SAWAGUCHI SATOSHI
BESSHO DAISUKE
SHOHARA MAKOTO
ITO YOICHI
TAKASU SHUSAKU
Application Number:
JP2018247826A
Publication Date:
May 16, 2019
Filing Date:
December 28, 2018
Export Citation:
Assignee:
RICOH CO LTD
International Classes:
G02B13/06; G02B13/04; G03B19/07; G03B37/00; H04N5/225; H04N5/232
Domestic Patent References:
| JP2005210651A | 2005-08-04 | |||
| JP2007511117A | 2007-04-26 | |||
| JPS6355217U | 1988-04-13 | |||
| JPH04338705A | 1992-11-26 | |||
| JP2001154152A | 2001-06-08 | |||
| JP2009205775A | 2009-09-10 | |||
| JP2005283616A | 2005-10-13 |
Foreign References:
| WO2001068540A2 | 2001-09-20 | |||
| WO2000060870A1 | 2000-10-12 | |||
| WO2000060869A1 | 2000-10-12 | |||
| GB2385840A | 2003-09-03 |
Attorney, Agent or Firm:
Shuichi Kudo