A method includes forming optical lenses on an ICD at the wafer level, rather than attaching a separate lens assembly. The IEEE1394 interface is provided for an IRD, thereby enabling the IRD and equipment such as digital VCR, MD playerrecorder, or the like to be connected. The network traversal time for the first packet is then the graphically display. The supplemental retainer portions are arranged and constructed to be axially supported by a support die of a crimping machine when the end peripheries of the fixing portions are crimped while the second retainer portion is axially supported by the support die. The second half-circuit further comprises a source leader transistor coupled to the output node to provide a feedback signal based on the readout. 01 Mrad or more and 1 Mrad or less.