Title:
OPTICAL ELEMENT AND METHOD FOR WORKING THE SAME, AND CHAMFERING AND GRINDING STONE
Document Type and Number:
Japanese Patent JP2010169971
Kind Code:
A
Abstract:
To prevent the occurrences of minute defects such as pilus and chipping, by setting the angle of the corner of a chamfered portion formed on the body of an optical element to a predetermined angle or greater.
In the lens L having the chamfered portion B formed between the outer circumferential face S of a lens body and the outermost circumferential part Lb of an optical functional face A, an angle α1 formed by a tangent C drawn to the outermost circumferential part Lb of the optical functional face A and a face La-Lb constituting the chamfered portion B, and an angle α2 formed by the outer circumferential face S of the lens body and the face La-Lb of the chamfered portion B are ≥105° and<180°.
Inventors:
USHIYAMA KAZUO
Application Number:
JP2009013565A
Publication Date:
August 05, 2010
Filing Date:
January 23, 2009
Export Citation:
Assignee:
OLYMPUS CORP
International Classes:
G02B3/00; B24B9/00; B24B13/00; B24D7/18
Domestic Patent References:
JP2000206312A | 2000-07-28 | |||
JP2003262774A | 2003-09-19 | |||
JP2004240099A | 2004-08-26 | |||
JP3025219U | 1996-06-11 | |||
JP2002283203A | 2002-10-03 | |||
JP2006130634A | 2006-05-25 |
Attorney, Agent or Firm:
Yoshiyuki Osuga