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Title:
PROJECTION TYPE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2013152384
Kind Code:
A
Abstract:

To provide a projection type display device which can further effectively reduce speckles.

A beam expansion unit 20 expands laser beams emitted from laser sources 1R, 1G, and 1B into elliptical shapes. A beam radiation position displacing unit 4 translationally moves a mirror 41 by a driving unit 44 so as to sequentially move the elliptically expanded laser beams respectively in short axis directions of the elliptical shapes on a surface of an integrator 5a. Reflection type liquid crystal elements 14R, 14G, and 14B modulate the laser beams. A projection lens 17 projects the laser beams modulated by the reflection type liquid crystal elements 14R, 14G, and 14B.


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Inventors:
AMIHOSHI KAZUYOSHI
TODA MOTOFUMI
KOBAYASHI KEN
Application Number:
JP2012013802A
Publication Date:
August 08, 2013
Filing Date:
January 26, 2012
Export Citation:
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Assignee:
JVC KENWOOD CORP
International Classes:
G02B3/00; G03B21/14; G02B5/32; G02B19/00; G02B27/48; G02F1/13; G02F1/1335
Domestic Patent References:
JP2003098476A2003-04-03
JP2008256824A2008-10-23
JP2009169012A2009-07-30
Foreign References:
WO2011092843A12011-08-04
WO2008114502A12008-09-25
WO2006137326A12006-12-28
WO2007013221A12007-02-01
WO2005073798A12005-08-11
Attorney, Agent or Firm:
Hidekazu Miyoshi
Shunichi Takahashi



 
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