IEC 62496-1 applies to optical circuit boards possessing all of the following general features: – transmit patterns with straight, cross, bending optical paths and input and output optical ports in plane; – optical paths consisting of optical fibres and/or optical waveguides; – controlled lengths of the optical paths, if required; – may be combined with a printed electric circuit board, the functionality of which is outside the scope of this standard; – functions to interconnect between optical components and the ability to mount components. The purpose of this standard is to specify optical circuit board requirements as they relate to − classification, − IEC standard system, − documentation, − materials, − workmanship, − performance, − identification − packaging.