| 摘要 |
<p>This invention provides a cover glass for a solid state imaging device, which is less likely to undergo the separation of a covering film provided on the cover glass on its light transparent face, can realize satisfactory bonding area and bonding strength to a substrate, has a high level of mechanical strength and a high level of optical properties, and stable chemical properties, and has a high level of cleanness, and a method for manufacturing the cover glass. A cover glass (10) for a solid state imaging device is characterized in that it comprises a thin sheet formed of an inorganic oxide glass, the thin sheet has two light transparent faces (11, 12) opposed to the sheet thickness direction, a covering film (C1, C2) is provided on at least one of the light transparent faces (11, 12), the outer peripheral end face of the cover glass (10) is formed of faces (13, 14) cut by a laser beam, and the covering film (C1, C2) has been formed before the laser beam cutting. The method for manufacturing the cover glass comprises the step of melting a glass raw material mixture, the step of molding the molten glass into a sheet glass (G), the step of forming a covering film (C1, C2) on at least one of two light transparent faces (11, 12) of the sheet glass (G) (film forming step), the step of applying a laser beam to the sheet glass with the covering film (light application step), and the step of dividing the sheet glass subjected to the laser beam application step into small glass pieces.</p> |
