A vehicle body panel includes a substrate defining an exterior surface. A detectable layer is positioned on the exterior surface and is configured to interact with a first band of an electromagnetic spectrum. A decorative layer is positioned on the detectable layer and is configured to reflect a portion of a second band of the electromagnetic spectrum and transmit the first portion of the electromagnetic spectrum. A top layer is positioned on the decorative layer and is configured to transmit the first and second band of the electromagnetic spectrum.

A vehicle engine is provided that includes an exhaust manifold configured to emit a first emission. A heat shield is positioned proximate the exhaust manifold and has a shield substrate defining an aperture. An indicator is positioned over the aperture with a support substrate and a semiconductor layer. The semiconductor layer is configured to absorb the first emission and emit a second emission.

A vehicle engine is provided that includes an exhaust manifold configured to emit a first emission. A heat shield is positioned proximate the exhaust manifold and has a shield substrate defining an aperture. An indicator is positioned over the aperture with a support substrate and a semiconductor layer. The semiconductor layer is configured to absorb the first emission and emit a second emission.

A vehicle emissions system is provided that includes a tail pipe configured to emit a first emission, a heat shield positioned proximate the tail pipe having a shield substrate. A semiconductor layer is positioned on the shield substrate and configured to convert the first emission into a second emission. An overmold is positioned over the semiconductor layer.

A vehicle body panel includes a substrate defining an exterior surface. A detectable layer is positioned on the exterior surface and is configured to interact with a first band of an electromagnetic spectrum. A decorative layer is positioned on the detectable layer and is configured to reflect a portion of a second band of the electromagnetic spectrum and transmit the first portion of the electromagnetic spectrum. A top layer is positioned on the decorative layer and is configured to transmit the first and second band of the electromagnetic spectrum.

A vehicle applique is provided that includes a decorative layer and an over-mold positioned over the decorative layer. The over-mold is substantially transparent. A light conversion layer is positioned on an opposite side of the decorative layer from the over-mold and configured to convert ambient illumination. A reflective layer is configured to convert ambient illumination. A reflective layer is configured to reflect light into the light conversion layer.

An exemplary embodiment provides for a source of white light having at least one white light emitting device composed of a transparent glass/quartz chamber, a vacuum chamber including an optically active element, a spacer, a focusing lens, an IR laser diode, where the optically active element arranged in the vacuum chamber is a thin-layer oxide matrix doped with rare earth ions selected from the group of Nd, Yb, the concentration of dopant ions being in the range of 0.0001 to 100 at %.

A vehicle engine is provided that includes an exhaust manifold configured to emit a first emission. A heat shield is positioned proximate the exhaust manifold and has a shield substrate defining an aperture. An indicator is positioned over the aperture with a support substrate and a semiconductor layer. The semiconductor layer is configured to absorb the first emission and emit a second emission.

A vehicle engine is provided that includes an exhaust manifold configured to emit a first emission. A heat shield is positioned proximate the exhaust manifold and has a shield substrate defining an aperture. An indicator is positioned over the aperture with a support substrate and a semiconductor layer. The semiconductor layer is configured to absorb the first emission and emit a second emission.

A vehicle emissions system is provided that includes a tail pipe configured to emit a first emission, a heat shield positioned proximate the tail pipe having a shield substrate. A semiconductor layer is positioned on the shield substrate and configured to convert the first emission into a second emission. An overmold is positioned over the semiconductor layer.