The visual safety of LED panel light depends on the synergy of spectral characteristics and optical design. As a planar light source that combines semiconductor light-emitting devices with light-guiding structures, the light output of LED panel light achieves wavelength screening and energy distribution control through multi-layer media. The basic optical path system includes a wavelength conversion module of blue light chip and fluorescent coating, which converts high-energy photons into wide-spectrum visible light through Stokes shift. The relative intensity of the blue light peak in its spectral power distribution determines the potential photobiological risk level.
The microprism array of the light diffusion structure in the LED panel light regulates the direction of the emitted light to avoid direct stimulation of the retina by high-brightness point light sources. The constant current control of the driving circuit eliminates power frequency flicker and reduces the risk of visual fatigue caused by pupil adjustment frequency. The surface treatment process forms submicron roughness on the diffusion plate, enhances the proportion of diffuse reflection of light, and makes the vertical illumination gradient transition smoothly.
The light transmittance of the material of LED panel light affects the transmittance of harmful radiation, and the dual filtering system of ultraviolet blocking coating and infrared reflective film intercepts non-visible light band energy. The thermal management design maintains a stable junction temperature and prevents wavelength shift caused by temperature drift.
