Electromagnetic interference (EMI) shielding in optical sensors

A system comprising:

• an optical sensor comprising:
• a substrate;
• a plurality of electrical components coupled to the substrate, wherein the plurality of electrical components comprises a first electrical component coupled to a first region of the substrate and at least one other electrical component coupled to at least one other region of the substrate, and wherein the first electrical component is configured to emit electromagnetic waves;
• a first electromagnetic interference (EMI) shield forming a first conductive envelopment around at least the first region, wherein the first electrical component is inside the first conductive envelopment and the at least one other electrical component is outside of the first conductive envelopment, and wherein the first EMI shield comprises a first aperture positioned above the first electrical component;
• and
• a lens coupled to the first EMI shield, wherein the lens is positioned above the first electrical component, and wherein the lens is substantially aligned with the first aperture;
• and
• a cover coupled to the substrate of the optical sensor, wherein the cover forms an enclosure around the first region and the at least one other region of the substrate, wherein the first EMI shield is inside the enclosure, and wherein the cover comprises at least a second aperture that is substantially aligned with the lens.

A method comprising:

• coupling a plurality of electrical components to a substrate, wherein the plurality of electrical components comprises a first electrical component coupled to a first region of the substrate and at least one other electrical component coupled to at least one other region of the substrate, and wherein the first electrical component is configured to emit electromagnetic waves;
• coupling a first electromagnetic interference (EMI) shield to the substrate, wherein the first EMI shield forms a first conductive envelopment around at least the first region, wherein the first electrical component is inside the first conductive envelopment and the at least one other electrical component is outside of the first conductive envelopment, and wherein the first EMI shield comprises a first aperture positioned above the first electrical component;
• coupling a lens to the first EMI shield, wherein the lens is positioned above the first electrical component, and wherein the lens is substantially aligned with the first aperture;
• and
• coupling a cover to the substrate, wherein the cover forms an enclosure around the first region and the at least one other region of the substrate, wherein the first EMI shield is inside the enclosure, and wherein the cover comprises at least a second aperture that is substantially aligned with the lens.