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Title:
FILTER
Document Type and Number:
Japanese Patent JP2019086583
Kind Code:
A
Abstract:
PURPOSE: To provide a filter which has such an impact absorption function as to prevent an outer frame from damaging a lens even when a filter hits against something, and can cut a female thread for mounting a related component.CONSTITUTION: A filter that is mounted on a front surface of a lens barrel of a digital camera and a digital video camera includes a filter lens, a lens holding frame holding the filter lens and an outer frame positioned on the outer peripheral part of the lens holding frame, in which the outer frame is formed of a synthetic resin having Rockwell hardness (HR) of R40 to R130.SELECTED DRAWING: Figure 1

Inventors:
唐澤 豊
高橋 薫
Application Number:
JP2017212937A
Publication Date:
June 06, 2019
Filing Date:
November 02, 2017
Export Citation:
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Assignee:
マルミ光機株式会社
International Classes:
G03B11/00
Attorney, Agent or Firm:
畠山 隆
福田 保夫



 
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