Title:
光学素子およびこれを用いた照明光学装置、表示装置、電子機器
Document Type and Number:
Japanese Patent JP5110350
Kind Code:
B2
Abstract:
A microlouver includes a periodic structure in which a transparent layer and a light absorption layer are alternately disposed with a constant, repetitive period. The range of the exit direction of a light beam passing through the transparent layer is restricted by the light absorption layer. The periodic structure includes a periodic structure portion divided in the direction that intersects the direction in which the transparent layer and the light absorption layer are repeatedly disposed. In the periodic structure portion, between the periodic structures adjacent to each other, there is a difference of 180 degree in the phase of spatial frequency of each periodic structure.
More Like This:
Inventors:
Koji Mimura
Sumiyoshi Lab
Sumiyoshi Lab
Application Number:
JP2006267978A
Publication Date:
December 26, 2012
Filing Date:
September 29, 2006
Export Citation:
Assignee:
nlt Technology Co., Ltd.
International Classes:
G02B5/00; G02B5/02; G02F1/1335; G09F9/00
Domestic Patent References:
| JP2001034183A | ||||
| JP2006140126A | ||||
| JP2005275262A | ||||
| JP11121974A | ||||
| JP2004029673A |
Attorney, Agent or Firm:
Akio Miyazaki
Ishibashi Masayuki
Masaaki Ogata
Ishibashi Masayuki
Masaaki Ogata