LENS-CENTERING METHOD FOR SPHERICAL CENTER-TYPE PROCESSING MACHINE, LENS-PROCESSING METHOD, AND SPHERICAL CENTER-TYPE PROCESSING MACHINE

Title:

LENS-CENTERING METHOD FOR SPHERICAL CENTER-TYPE PROCESSING MACHINE, LENS-PROCESSING METHOD, AND SPHERICAL CENTER-TYPE PROCESSING MACHINE

Document Type and Number:

WIPO Patent Application WO/2015/162789

Kind Code:

A1

Abstract:

　According to this lens-centering method, a state in which a lens (7) is sandwiched at prescribed pressing force between a lens holder (4) and a lens processing dish (8) is brought about (steps ST1-3). Next, the lens-processing dish (8) is rotated at slow speed about a rotation axis (8A) that passes through the center (C) (8a) and the spherical center (O) (8a) of the lens-processing surface (8a) thereof, and is made to oscillate at a slight angle about the spherical center (O) (8a) of the lens-processing surface (8a) as the center of oscillating action. The spherical center of a first lens spherical surface (7a) of the lens (7) is guided by the spherical center of a lens-retaining surface (4a) of the lens holder (4), and the spherical center of a second lens spherical surface (7b) is guided by the spherical center (O) (8a) of the lens-processing surface (8a) (rotation/oscillation step ST4). A lens installed in the spherical center-type processing machine can be set to an accurately centered state thereby.

More Like This:

WO/2015/190189

GRINDING TOOL, GRINDING METHOD, AND GRINDING DEVICE

Inventors:

KOJIMA HIDEO (JP)
FUKUZAWA HIROSHI (JP)

Application Number:

PCT/JP2014/061761

Publication Date:

October 29, 2015

Filing Date:

April 25, 2014

Export Citation:

Click for automatic bibliography generation Help

Assignee:

KOJIMA ENGINEERING CO LTD (JP)

International Classes:

B24B13/02

Domestic Patent References:

WO2011092748A1

2011-08-04

Foreign References:

JP2010184340A	2010-08-26
JP2001225265A	2001-08-21

Other References: