WINDOW

摘要

A window comprises a holder (30) having an opening for receiving a layer (44) of diamond, sapphire or like material, the opening being defined by a surface (38) which slopes from one edge (40) to an opposite edge (42) and a layer (44) of diamond, sapphire or like material having an edge surface (50) complemental with the opening-defining surface (38) located in the opening such that the complemental surfaces (38, 50) complement each other and are bonded to each other. Generally, a bonding layer (52) is provided between the complemental surfaces (38, 50).