What are the control measures for indoor light pollution caused by LED panel lights

What is Indoor Light Pollution?
Indoor light pollution refers to optical phenomena such as glare, strong reflections, flickering, and blue light leakage generated by lighting equipment during operation, which negatively impact vision and psychology. Common types of indoor light pollution include glare pollution, blue light pollution, flickering pollution, and visual fatigue caused by uneven illumination.
LED panel lights are a mainstream lighting product widely used in modern buildings and commercial spaces. Whether their design effectively controls light pollution directly impacts the comfort and safety of the user environment.

Design Methods for Controlling Glare Pollution
LED panel lights reduce glare levels in indoor spaces by optimizing their optical systems to suppress direct and reflected glare.

Reducing the Unified Glare Ratio (UGR)
The Unified Glare Ratio (UGR) is an internationally recognized standard for measuring lighting glare levels. LED panel lights can achieve a UGR below 19 by designing appropriate beam angles, controlling brightness distribution, and optimizing lighting layout. This meets the requirements of offices, education, healthcare, and other spaces that require high visual comfort. Using a Microprismatic Diffuser
A microprismatic diffuser effectively disperses concentrated light beams, preventing the intense point light generated by LED chips from directly entering the human eye. Through its unique refractive structure, this diffuser guides light evenly, reducing the intense glare experienced when looking directly at the fixture.
Using an Anti-Glare Shield
LED panel lights can be equipped with an anti-glare shield or honeycomb filter to limit the illumination angle without affecting overall luminous flux, reducing brightness in the direct line of sight and alleviating eye fatigue.

Optimizing Light Sources to Reduce Blue Light Pollution
The high-energy, short-wavelength blue light in LED light sources can potentially harm the retina. Long-term exposure to high-blue light levels can lead to macular damage, dry eye syndrome, and other problems.
Using Low-Blue Light LED Chips
Low-blue light LED chips utilize spectrum optimization technology to reduce light output below 450nm, minimizing harmful blue light while maintaining a high color rendering index and stable color temperature. Adding a blue light filter or coating
Adding a blue light filter or using optical materials with blue light absorption properties to the light-emitting surface of LED panel lights can effectively absorb high-energy blue light, achieving physical blue light protection.
Controlling the color temperature range
Controlling the correlated color temperature of LED panel lights between 3000K and 4000K helps reduce the proportion of blue light and avoids visual discomfort and circadian rhythm disruption caused by excessively high color temperatures of cool white light.

Eliminating the impact of flicker on the human body
Flicker is a periodic variation in light output caused by unstable LED driver control or poor power quality. Flicker, imperceptible to the naked eye, can still cause physiological reactions such as headaches, fatigue, and decreased concentration.
Using a high-frequency constant-current driver
High-quality LED panel lights should be equipped with a high-frequency (>20kHz) constant-current driver to ensure no visible or invisible flicker at any brightness level, eliminating the problem of unstable light output at the source. Comply with Flicker-Free Certification Standards
LED panel lights that comply with IEC 62776, IEEE 1789, or China CQC Flicker-Free certification standards have clearly defined limits on flicker fluctuations during design and manufacturing, effectively ensuring user safety.
Support for Intelligent Dimming Systems
A digital dimming control system (such as 0-10V or DALI) achieves smooth transition dimming, avoiding the low-frequency flicker that can occur with PWM (pulse-width modulation) dimming.

Improves Illumination Uniformity and Visual Comfort
Excessive contrast between light and dark caused by uneven illumination can cause localized visual stress and fatigue, another form of light pollution.
Proper LED Chip Distribution
The light sources within LED panel lights should be densely and evenly distributed to avoid localized bright or dark areas. This uniform layout improves overall lighting consistency.
High-Precision Dot Matrix Lighting Technology for Light Guide Plates
The light guide plate utilizes a precision laser dot process, combined with the design of different light output angles, to achieve light gradient control, ensuring consistent illumination across the panel light surface and enhancing visual harmony. Multi-layer composite optical structure: The LED panel light structure incorporates multiple layers of composite optical materials, including reflective, brightness-enhancing, and diffusion films. This not only improves light efficiency but also achieves multiple refractions and uniform light output, creating a soft and natural indoor lighting effect.