Title:
ILLUMINATING APPARATUS, ILLUMINATING METHOD AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2007/148651
Kind Code:
A1
Abstract:
A light source is arranged on a side of a light guide plate, and a beam direction
regulating element and a reflecting plate are arranged in sequence on the light
guide plate on the side opposite to the illuminating direction. On the illuminating
direction side of the light guide plate, a transmission/scattering switching
element is arranged. Light inputted to the light guide plate from the light source
is outputted in a direction opposite to the illuminating direction, passes through
the beam direction regulating element and is reflected by the reflecting plate.
The reflected light passes through the beam direction regulating element again,
passes through the light guide plate and is outputted as transmitted light or
scattered light after entering the transmission/scattering switching element.
Thus, generation of moiré and luminance nonuniformity are suppressed
and an illuminating apparatus which can control output light angular distribution
is provided.
Inventors:
SAITOH GOROH (JP)
IMAI MASAO (JP)
IMAI MASAO (JP)
Application Number:
PCT/JP2007/062230
Publication Date:
December 27, 2007
Filing Date:
June 18, 2007
Export Citation:
Assignee:
NEC CORP (JP)
SAITOH GOROH (JP)
IMAI MASAO (JP)
SAITOH GOROH (JP)
IMAI MASAO (JP)
International Classes:
F21V8/00; G02B5/02; G02F1/13357; F21Y101/02
Foreign References:
| JP3328496B2 | 2002-09-24 | |||
| JPH09113730A | 1997-05-02 | |||
| JP3675752B2 | 2005-07-27 | |||
| JP2005285388A | 2005-10-13 | |||
| JP2000162595A | 2000-06-16 | |||
| JP2005079008A | 2005-03-24 |
Attorney, Agent or Firm:
FUJIMAKI, Masanori (Kyohan Building2-7, Kandanishiki-cho,Chiyoda-k, Tokyo 54, JP)
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