Title:
CUTTING METHOD FOR MOLD OF MICRO-LENS ARRAY
Document Type and Number:
WIPO Patent Application WO/2024/034418
Kind Code:
A1
Abstract:
Provided is a cutting method for a mold of a micro-lens array provided with a plurality of micro-lenses having approximately the same shape and each having an optical axis in the same direction. When one surface of the mold corresponding to a surface of one micro-lens is cut, in a coordinate system which has the x-axis, y-axis, and z-axis orthogonal to one another and in which the z-axis is defined as the direction of a center axis corresponding to the optical axis of the micro-lens of the one surface, and an angle between a rotational axis of the tool and a straight line in the direction of the z-axis passing through a point on the rotational axis of the tool is defined as θ, and an angle around the straight line in a plane including the rotational axis of the tool and the straight line is defined as Φ, cutting is performed while changing the value of the angle θ and maintaining the value of the angle Φ at a fixed value, and the variance of the angle Φ is distributed so as to be a prescribed value or higher with respect to the plurality of surfaces of the mold when the plurality of surfaces of the mold corresponding to the surfaces of the plurality of micro-lenses are cut.
Inventors:
HAMATANI TOSHIKI (JP)
NISHIO YUKINOBU (JP)
KUWAGAITO TOMOHITO (JP)
NISHIO YUKINOBU (JP)
KUWAGAITO TOMOHITO (JP)
Application Number:
PCT/JP2023/027546
Publication Date:
February 15, 2024
Filing Date:
July 27, 2023
Export Citation:
Assignee:
NALUX CO LTD (JP)
International Classes:
G02B3/00
Foreign References:
| JP2018043444A | 2018-03-22 | |||
| JP2005230974A | 2005-09-02 | |||
| JP2008254156A | 2008-10-23 |
Attorney, Agent or Firm:
FUSHIMI, Naoya (JP)
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