Title:
A zoom lens for projection, and an image display device
Document Type and Number:
Japanese Patent JP6167649
Kind Code:
B2
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Inventors:
Kubota Takashi
Application Number:
JP2013098242A
Publication Date:
July 26, 2017
Filing Date:
May 08, 2013
Export Citation:
Assignee:
株式会社リコー
International Classes:
G02B15/20; G02B13/14; G02B13/18; G03B21/14
Domestic Patent References:
| JP2004163477A | ||||
| JP2010156762A | ||||
| JP2012022019A | ||||
| JP2011095488A | ||||
| JP2006301262A | ||||
| JP2011053663A | ||||
| JP2011013469A | ||||
| JP2010266577A |
Foreign References:
| US20010038496 | ||||
| US7436600 | ||||
| US20100265363 |
Attorney, Agent or Firm:
Shuichi Kudo
Toru Kabayama
Shogo Honda
Toru Kabayama
Shogo Honda