LUXIM’s plasma lighting architecture consists of two fundamental parts:
- Emitter: A quartz lamp embedded in a ceramic resonator
- Radio Frequency (RF) Driver: A solid-state RF generator and micro-controller
A radio-frequency signal is generated and amplified by the RF driver, which is guided into the ceramic resonator through a low loss coaxial cable. The structure of the resonator concentrates the RF field, delivering energy to the fully-sealed quartz lamp without electrodes or filaments. The highly concentrated electric field ionizes the gasses and vaporizes the halides in the lamp - creating a plasma state at its center - resulting in an intense source of white light.
Inside the back of the lamp, a diffuse yet highly reflective material is used to reflect all of this light to the forward direction in a Lambertian pattern. The color of the light is tailored by the fill chemistry inside the lamp to provide a naturally white and high color rendering light.
The brilliance of LEP's architecture lies in its simplicity. By energizing a plasma arc without using filaments or electrodes, all
failure modes and inefficiencies of traditional HID technology are eliminated, leaving behind an incredibly bright and stable source.
An RF circuit is established by connecting an RF power amplifier to a ceramic resonator known as the “puck”. In the center of the puck is a sealed quartz lamp that contains metal halide materials and other gases.
The puck, driven by the power amplifier, creates a standing wave confined within its walls. The electric field is strongest at the center of the lamp, which causes ionization of the gases, creating a glow.
The ionized gas in turn heats up and evaporates the metal halide materials forming an intense plasma column within the lamp. This plasma column is centered within the quartz envelope and radiates light very efficiently.