An asymmetric lamp shade resolves the trade-off between wide illumination angles and uniform light distribution in LED bulbs.
Metallic layer converts trapped near field evanescent waves into plasma, resolving internal reflection losses and boosting LED light extraction efficiency.
A light-adjusting film with spatially varying pigment concentration corrects backlight optical output.
Integrator homogenizes light output from an extended source, resolving the trade-off between device complexity and texture projection sharpness.