Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Furnishings (hierarchy name)
5. furnishings (works)
6. [furnishings by form or function]
7. lighting devices
8. [lighting devices by form]
9. lamps (lighting devices)
10. [lamps by method of illumination]

Anotations

Scope note:

Lamps for lighting that use LEDs, organic light-emitting diodes (OLEDs), or light-emitting polymers consisting of semiconductors that convert electricity into light. Solid-state lighting is used in a variety of lighting applications because it is energy-efficient, environmentally friendly, and has longer life. They are also considered durable, intrinsically safe, and ideal for smaller, flexible light fixtures.