Title:
投射装置
Document Type and Number:
Japanese Patent JP5590498
Kind Code:
B2
Abstract:
To provide a projection device capable of maintaining excellent imaging performance with less curvature of the field even when a distance between the projection device and a screen is largely changed, particularly, even when it is set to a short distance.
The projection device 100 includes: a display element 12 displaying an image; a projection optical system 10 satisfying a condition f×θ
Inventors:
Jun Sekine
Kiwa Sugiyama
Kin-ya Kato
Kiwa Sugiyama
Kin-ya Kato
Application Number:
JP2009205564A
Publication Date:
September 17, 2014
Filing Date:
September 07, 2009
Export Citation:
Assignee:
NIKON CORP.
International Classes:
G03B21/14; G02B13/04; G02B13/18; G03B21/00; H04N5/74
Attorney, Agent or Firm:
Nobukazu Ito