Abstract: An optical inspection device designed for testing an optical component such as a protective glass, an optical transmission system of a welding laser beam having a laser wavelength, including a light source designed to emit a test light, a receiving device designed to receive at least a portion of the test light and to quantify at least one quantity of the received light, a holding device for holding the optical component designed to position the optical component between the light source and the receiving device, characterized in that: the portion of the test light received by the receiving device has a wavelength at ±20% of the laser wavelength.

Abstract: An optical inspection device designed for testing an optical component such as a protective glass, an optical transmission system of a welding laser beam having a laser wavelength, comprising: a light source designed to emit a test light, receiving means designed to receive at least a portion of the test light and to quantify at least one quantity of the received light, means for holding the optical component designed to position the optical component between the light source and the receiving means, characterized in that: the portion of the test light received by the receiving means has a wavelength at ±20% of the laser wavelength.

Abstract: An optical inspection device designed for testing an optical component such as a protective glass, an optical transmission system of a welding laser beam having a laser wavelength, comprising: a light source designed to emit a test light, receiving means designed to receive at least a portion of the test light and to quantify at least one quantity of the received light, means for holding the optical component designed to position the optical component between the light source and the receiving means, characterized in that: the portion of the test light received by the receiving means has a wavelength at ±20% of the laser wavelength.