METHOD OF ILLUMINATING A MAGNETIC COMPASS OR OTHER TYPE OF INDICIA IN LOW LIGHT SITUATIONS USING PHOTOLUMINESCENT MATERIALS

摘要

A method for passively illuminating an instrument face and a passively illuminated instrument. The method provides adjacent the instrument face a photoluminescent material encased in a polymer, exposes the photoluminescent material encased in the polymer to an activation source, and illuminates the instrument face by light emitted from the photoluminescent material. A passively illuminated instrument includes a photoluminescent material encased in a polymer and disposed adjacent the instrument face. Upon exposure of the photoluminescent material encased in the polymer to the activation source, the photoluminescent material emits light to illuminate the instrument face.