LENS BARREL PART, LENS ASSEMBLY, IMAGING DEVICE, AND LENS BARREL PART MANUFACTURING METHOD

Provided are a lens barrel part and a method of producing 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...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SASAKI, RYOTA, FUJIKI, KOUEI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DRESSING OR CONDITIONING OF ABRADING SURFACES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GRINDING MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION POLISHING TRANSPORTING
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Beschreibung
Zusammenfassung:	Provided are a lens barrel part and a method of producing 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 polishing tool 25, with the result that in those regions of surfaces in contact with the lenses where fine projections exist, protection film portions 28 consisting of hydrates or oxides are created due to the generation of tribochemical reactions, and that in those regions of surfaces in contact with the lenses which are other than the regions where fine projections are present, there exist porous portions 29 where no tribochemical reaction occurs and where a porous state remains.