RETRO-REFLECTIVE TARGET WAFER FOR A VISUAL POSITION DETERMINATION SYSTEM

摘要

A target that is usable in a position determination system such as, for example, a wheel alignment system, is structurally stable over wide temperature ranges, protected from humidity and chemical contamination, and not subject to breakage. A layered target structure (10) includes a substrate board (12) , an retro-reflective layer (14) formed on the substrate board (12) , a transparent sheet (16) overlaying the retro-reflective layer (14) , and an opaque patterned layer (16) between the retro-reflective layer and the transparent sheet . The layered target structure may be secured a support assembly.