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Patent Searching and Data


Title:
LENS BARREL PART, LENS ASSEMBLY, IMAGING DEVICE, AND LENS BARREL PART MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2011/148762
Kind Code:
A1
Abstract:
Provided are a lens barrel part and a method of manufacturing the same, such that the generation of grinding debris due to friction with lenses is suppressed while maintaining the air permeability of porous ceramics. Those areas of a lens barrel part (1) which are in contact with the lenses are ground in the water by means of a grinding tool (25), with the result that in those regions of surfaces in contact with the lenses where minute protrusions exist, protective film portions (29) consisting of hydrates or oxides are created due to the generation of tribo-chemical reactions, and that in those regions of surfaces in contact with the lenses which are other than the regions where minute protrusions are present, there exist porous portions (30) where no tribo-chemical reaction occurs and where a porous state remains.

Inventors:
FUJIKI KOUEI (JP)
SASAKI RYOUTA (JP)
Application Number:
PCT/JP2011/060517
Publication Date:
December 01, 2011
Filing Date:
May 02, 2011
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
FUJIKI KOUEI (JP)
SASAKI RYOUTA (JP)
International Classes:
B24B5/50; G02B7/02; H04N5/225
Foreign References:
JP2010085719A2010-04-15
JP2009248251A2009-10-29
JPH08276356A1996-10-22
JP2006284991A2006-10-19
JP2006292927A2006-10-26
JP2007238430A2007-09-20
JP2007279557A2007-10-25
JP2003145416A2003-05-20
Other References:
See also references of EP 2578355A4
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
Mochitoshi Watanabe (JP)
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Claims: