Title:
OPTICAL ROD, MANUFACTURING METHOD AND MANUFACTURING TOOL THEREFOR, AND PROJECTOR EQUIPPED WITH THE SAME
Document Type and Number:
Japanese Patent JP3960157
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an optical rod which can speedily be manufactured at low cost while maintaining the performance of the optical rod (integrator) suppressing the machining cost of a reflecting plate (original plate) low, a manufacturing method and a manufacturing tool therefor, and a projector equipped with the same.
SOLUTION: A cylinder body which is sectioned nearly in a square shape is formed by making the surface of one of a plurality of flat plates, each having a light reflecting surface on the surface, abut against one side end surface of the other flat plate with the surfaces of the flat plates in. Further, the optical rod is formed by bonding side edge parts of the flat plates outside the cylinder body. Furthermore, a spacer is inserted between inclines of a couple of right-angled prisms arranged in a nearly rectangularly section pole shape and the pole is expanded and used as the manufacturing tool.
Inventors:
Shohei Fujisawa
Yamaguchi Hideo
Kazuyuki Iinuma
Yamaguchi Hideo
Kazuyuki Iinuma
Application Number:
JP2002211941A
Publication Date:
August 15, 2007
Filing Date:
July 22, 2002
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G02B6/00; G02B27/00; G02B27/09; G02B27/18; G02F1/13357; G03B21/00; (IPC1-7): G02B6/00; G03B21/00
Domestic Patent References:
| JP10010514A |
Attorney, Agent or Firm:
Souji Sasaki
Hisao Kobayashi
Saburo Kimura
Noboru Omura
Hisao Kobayashi
Saburo Kimura
Noboru Omura