Method of manufacturing annular oblique light illumination apparatus and flexible wiring substrate

摘要

A flexible wiring substrate forms a light emitting device array attached to a frustoconical inner circumferential surface that serves as a light emitting device arranging surface of an annual oblique light illumination apparatus. A plurality of arcuate zonal wiring patterns for mounting light emitting devices are provided. Each wiring pattern is in the form of a developed frustoconical shape. The wiring patterns are serpiginously provided continuously directly or by way of connecting wiring patterns to a base film of a predetermined shape.