LED Panel Light

Overview

The LED panel light is a thin, edge-lit luminaire sized to drop into a 600x600 mm suspended-ceiling grid. Rather than facing the room with LEDs, it fires them sideways into a light guide plate that re-emits the light evenly across its whole face, giving a low-glare, uniform surface used widely in offices, schools, and clinics. An external constant-current driver powers the panel through a quick-connect lead.

Construction

The optical stack is held by the Aluminium Frame, an anodised aluminium perimeter of four extruded profiles whose stepped channel seats the panel layers and sinks heat from the edge strips. The light source is the set of LED Edge Strip boards, aluminium MCPCBs each carrying around seventy mid-power white LED chips that inject light into the guide edge through thermal tape bonding them to the frame.

At the centre, the Light Guide Plate is a cast PMMA plate whose micro-dot extraction pattern turns edge-injected light into even surface emission. A Diffuser Sheet sheet over the guide hides hotspots, a Reflector Sheet sheet behind it bounces escaping light forward, and a sheet-steel back plate closes and stiffens the stack.

Power comes from the external LED Driver, a metal-housed constant-current supply with a bridge rectifier and switching transformer feeding the panel through an output connector. The Input Lead carries that output to a panel-side mating connector, and a Mounting Kit of spring clips and brackets fixes the panel into a recessed cut-out or surface position.