ILT CODE: ILT-U-422
Description: Field of view; Eyepieces without filtering action; Variation in transmittance; Diffusion of light; Minimum strength; High temperature stability; Resistance to ultraviolet radiation; Resistance to ignition; Protection against drops and splashes of liquids; Side protection; Resistance to surface deterioration due to fine particles; and Resistance of the eyepieces to fogging
Method: EN 166