Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OPTICAL LOW-PASS FILTER AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/030863
Kind Code:
A1
Abstract:
An optical low-pass filter includes a light transmitting member (41) and refraction factor distribution formation means (42) for forming a refraction factor distribution periodically changing within a plane of the light transmission member (41). The refraction factor distribution formation means is formed, for example, by a piezoelectric body. By applying a high-frequency voltage to the piezoelectric body to generate a compressional wave in the light transmitting member (41), the refraction factor distribution is formed.

Inventors:
Shiozawa, Masaki c/o NIKON CORPORATION (2-3 Marunouchi 3-chom, Chiyoda-ku Tokyo 31, 10083, JP)
Nomura, Tatsushi c/o NIKON CORPORATION (2-3, Marunouchi 3-chom, Chiyoda-ku Tokyo 31, 10083, JP)
Application Number:
PCT/JP2005/017050
Publication Date:
March 23, 2006
Filing Date:
September 15, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIKON CORPORATION (2-3 Marunouchi 3-chome, Chiyoda-ku, Tokyo 31, 10083, JP)
Shiozawa, Masaki c/o NIKON CORPORATION (2-3 Marunouchi 3-chom, Chiyoda-ku Tokyo 31, 10083, JP)
Nomura, Tatsushi c/o NIKON CORPORATION (2-3, Marunouchi 3-chom, Chiyoda-ku Tokyo 31, 10083, JP)
International Classes:
G02B27/46; G03B11/00; H04N5/238; H04N5/335
Foreign References:
JPS6440812A1989-02-13
JPH0338978A1991-02-20
JPS60101519A1985-06-05
JPH01261012A1989-10-18
JPH03141681A1991-06-17
JP2003167123A2003-06-13
Attorney, Agent or Firm:
Nagai, Fuyuki (Iino Building, 2-1-1 Uchisaiwai-ch, Chiyoda-ku Tokyo 11, 10000, JP)
Download PDF: