Title:
LENS SYSTEM ADJUSTING DEVICE AND LENS SYSTEM ADJUSTING METHOD USING IT, AND PRODUCTION DEVICE FOR IMAGING DEVICE AND PRODUCTION METHOD FOR IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/028183
Kind Code:
A1
Abstract:
A substrate (24) is formed with diffraction elements (23) at positions corresponding to respective angles of view of a lens system (22) so as to be point-symmetric, and is disposed between a light source (21) and the first lens element (39) of the lens system (22). The second lens element (40) of the lens system (22) is fixed by a second holding unit (35), and the second holding unit (35) is moved by a second moving mechanism (36) so that the condensing spot of a reference ray of light agrees with the center of an imaging element (25) and a group of condensing spots of rays of light deflected in association with respective angles of view by respective diffraction elements (23) of the substrate (24) are point-symmetric with respect to the center of the imaging element (25). Thus, rays of light corresponding to a plurality of angles of view are used to accurately adjust the light axis of the lens system (22).
Inventors:
SAEKI TETSUO (JP)
Application Number:
PCT/JP2005/016546
Publication Date:
March 16, 2006
Filing Date:
September 08, 2005
Export Citation:
Assignee:
SHARP KK (JP)
SAEKI TETSUO (JP)
SAEKI TETSUO (JP)
International Classes:
G02B7/02; G01M11/00; G01M11/02; H04N5/232
Foreign References:
| JP2000050146A | 2000-02-18 | |||
| JP2001013388A | 2001-01-19 | |||
| JP2003066300A | 2003-03-05 | |||
| JP2003307661A | 2003-10-31 | |||
| JP2004163865A | 2004-06-10 | |||
| JP2005086659A | 2005-03-31 |
Attorney, Agent or Firm:
Kawamiya, Osamu (IMP Building 3-7, Shiromi 1-chome, Chuo-k, Osaka-shi Osaka, JP)
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