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Patent Searching and Data


Title:
SPHERICAL LENS SURFACE PROCESSING METHOD USING CUP-SHAPED GRINDING STONE AND SPHERICAL LENS SURFACE PROCESSING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/008158
Kind Code:
A1
Abstract:
In a spherical lens surface processing method, a lens surface (5a) is ground to a spherical surface by forming a contacting state in which a rotating cup-shaped grinding stone (9) is placed in contact with the lens surface (5a) and a sphere center oscillation state in which the cup-shaped grinding stone (9) oscillates along the lens surface (5a) centered on a sphere center. In the sphere center oscillation state, the distance from the center (P1) of the sphere center oscillation to the contact point (P3) of the cup-shaped grinding stone (9) with the lens surface (5a) is set to be the same as the radius (R) of the spherical surface. The oscillation width of the sphere center oscillation is set so that the contact point (P3) of the cup-shaped grinding stone (9) with the lens surface (5a) can move from one peripheral edge of the lens surface (5a) past the lens center (P2) on the lens surface to the other peripheral edge.

Inventors:
KOJIMA Hideo (10500-335, Oaza Nakaminowa, Minowa-machi, Kamiina-gu, Nagano 01, 〒3994601, JP)
FUKUZAWA Hiroshi (10500-335, Oaza Nakaminowa, Minowa-machi, Kamiina-gu, Nagano 01, 〒3994601, JP)
JOWA Tetsuya (10500-335, Oaza Nakaminowa, Minowa-machi, Kamiina-gu, Nagano 01, 〒3994601, JP)
Application Number:
JP2016/070347
Publication Date:
January 11, 2018
Filing Date:
July 08, 2016
Export Citation:
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Assignee:
KOJIMA ENGINEERING CO., LTD. (10500-335, Oaza Nakaminowa Minowa-machi, Kamiina-gu, Nagano 01, 〒3994601, JP)
International Classes:
B24B13/04; B24B13/02
Foreign References:
JP2004188557A2004-07-08
JP2009066724A2009-04-02
JPH071311A1995-01-06
DE2659489A11978-07-13
Attorney, Agent or Firm:
YOKOZAWA Shiro (1132-18, Shimadachi Matsumoto-sh, Nagano 52, 〒3900852, JP)
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