Lighting Distribution Control Technology
Supporting UV Disinfection
Tech Gallery
A technology that maximizes disinfection performance by delivering UV light uniformly and efficiently to the target object.
While UV light provides powerful disinfection, its effectiveness depends greatly on where and how much UV light is applied.
By combining precise optical design that controls light propagation with structural design optimized for the target object, Stanley Electric maximizes the effectiveness of UV disinfection.
～What Is UV disinfection?～
UV disinfection is a method that suppresses the reproduction of bacteria and viruses by irradiating them with UV light, which acts on their DNA and RNA.
When exposed to UV light, the structure of DNA and RNA—responsible for genetic information—is altered, preventing normal replication. As a result, bacteria and viruses are inactivated and their proliferation is suppressed.
This method offers key advantages, including no chemical residue, non-contact processing, and short treatment times.
～In UV disinfection, “how the light is applied” matters～
While UV light offers high disinfection effectiveness, its performance can vary greatly depending on how it is applied.
When UV irradiation is uneven:
・Areas that are not sufficiently disinfected may remain
・Excessive exposure can accumulate damage to materials
・Overall disinfection efficiency may decrease
These issues can negatively impact product performance and reliability.
That is why our disinfection products incorporate designs that leverage precise lighting distribution control, ensuring uniform UV irradiation and stable disinfection performance.
1. Use of UV-Resistant materials
Conventional lens materials designed for visible light are prone to yellowing and cracking when exposed to UV light, leading to reduced transmittance and degraded lighting distribution performance. As a result, it becomes difficult to maintain stable disinfection performance over long periods.
Stanley Electric carefully selects and adopts UV-resistant materials that maintain high transparency and mechanical strength even under continuous UV exposure. This suppresses performance degradation over time and enables stable, reliable operation with high durability.
2. Lens design that maximizes disinfection effectiveness
In UV disinfection, the key is not simply to irradiate with strong light, but to deliver UV light uniformly across the entire target surface. Uneven irradiation can lead not only to inconsistent disinfection results but also to material degradation from overexposure and increased safety risks.
Stanley Electric designs lenses optimized for the shape of the target, installation environment, and application. By achieving uniform UV irradiation and optimizing irradiance distribution, our technology maximizes disinfection performance while also helping to reduce health and infection risks.
3. Uniform UV irradiation even within flowing water
When disinfecting water or other liquids with UV light, not only optical design but also the flow characteristics of the liquid greatly affect disinfection performance. Variations in flow velocity can create areas that receive insufficient UV exposure, resulting in unstable disinfection performance.
Stanley Electric combines:
・Optical control that efficiently reflects UV light along the flow channel walls
・Fluid design that rectifies the flow and equalizes velocity distribution.
This integrated approach ensures that UV light reaches the entire water flow, enabling uniform UV irradiation and stable disinfection performance even in flowing water.
～Optimization from both light and target perspectives～
Stanley Electric’s lighting distribution control technology goes beyond optical design alone. By optimizing both the light and the disinfection target, including the usage environment, we maximize the disinfection through a comprehensive, dual-sided approach.
Drinking Water
Industrial Water
Hydroponics
Manufacturing Equipment
Compact UV-C LED Module (for surface disinfection)
Key Features:
・Designed to match the shape of the target object
→ Enables uniform UV irradiation without uneven exposure
・Compact structure suitable for installation in limited spaces
→ Ideal for mold and bacteria control inside manufacturing equipment and machinery
UV-C LED Reactor (for water disinfection)
Key Features:
・Fluid design that conditions water flow × optical control that efficiently reflects light along flow channel walls
→ Enables uniform UV irradiation even in flowing water
・Maintains water cleanliness in applications such as water coolers, drink dispensers, and small-scale water supply systems