Title:
偏光回折性の導光体、バックライト、および表示装置
Document Type and Number:
Japanese Patent JP4949500
Kind Code:
B2
Abstract:
A backlight is provided for illuminating an at least partially transmissive display. The backlight includes a light source. A light guide receives the light from an edge surface and guides the light by total internal reflection. The light is extracted from the lightguide using sub-wavelength extraction features designed on the basis of two interleaved grating structures. The emitted light, using this arrangement has a high level of polarization.
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Inventors:
Ioannis Papa Constantino
David James Montgomery
David James Montgomery
Application Number:
JP2010107479A
Publication Date:
June 06, 2012
Filing Date:
May 07, 2010
Export Citation:
Assignee:
Sharp Corporation
International Classes:
F21S2/00; F21V9/14; G02F1/13357; F21Y101/02; F21Y103/00
Domestic Patent References:
| JP2006120484A | ||||
| JP2005189264A | ||||
| JP2006114379A | ||||
| JP2006294361A | ||||
| JP2001343612A |
Attorney, Agent or Firm:
Kenzo Hara International Patent Office