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公开(公告)号：US10280113B2
公开(公告)日：2019-05-07
申请号：US15158944
申请日：2016-05-19
Applicant: AGC Inc.
Inventor： Hidetaka Masuda
Abstract: There are provided a manufacturing method of a glass member capable of being cut well without causing a decrease in strength even by using laser light to form a reformed region inside a glass and cutting the glass along the reformed region, and a glass member obtained by the manufacturing method. A glass member 100 having, as a main body thereof, a glass substrate 110 including: strengthened principal surfaces 110a and an end surface; a reformed region R formed on the end surface made by light radiated to be focused thereto, in which a tension stress (CT) of a center portion in a tension stress region, a fracture toughness (K1c) of the glass substrate, and a crack initiation load (CIL) of the glass substrate satisfy a predetermined expression.
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公开(公告)号：US10249664B2
公开(公告)日：2019-04-02
申请号：US15073119
申请日：2016-03-17
Applicant: AGC Inc.
Inventor： Hidetaka Masuda
Abstract: To provide an optical glass, being an optical glass manufactured by a cutting method using laser light, more increases strength to make it difficult to cause breakage when external force such as impact is applied thereon, or more increases a bonding strength to a casing to more increase reliability of the product. An optical glass 100 is a plate-shaped optical glass to be bonded to a casing to cover an opening of the casing, the optical glass being made of a glass substrate 110 including: a first principal surface 110A being the side to be bonded to the casing; a second principal surface 110B being the side opposite to the first principal surface; and a cut surface cut along a reformed region R formed therein by light radiated to be focused therein, in which the reformed region R exists unevenly at the second principal surface 110B side.
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