An integrated lens structure that can be used for glasses, goggles, and safety glasses is provided. The lens is formed as an integral structure with a protrusion, the protrusion having a surface that can be machined for prescription eyeglasses, extending from a first side of a large shield, Cracks at the intersection with the outer periphery of the protrusion are prevented by connecting the two surfaces in a non-linear manner. [Selection] Figure 1【課題】眼鏡、ゴーグル及び安全眼鏡類に使用可能な一体レンズ構造を提供する。【解決手段】レンズは突部と共に一体構造として形成され、突部は処方型眼鏡類用に機械加工可能な面を有し、大型の遮蔽体の第１の側面から延在し、遮蔽体と突部外周との交差部における亀裂を、２個の面間を非直線状に接続することにより防止する。【選択図】図１
