Inside our lab, there is a device that looks like a blue sphere. It may not look like much, but it plays a critical role - it's called an integrating sphere.
Think of it as an "optical check-up" for every LED mirror we make. It doesn't measure how the mirror looks - it measures how good the light actually is.
What does it measure?
When we place an LED strip or a complete mirror into the integrating sphere, it gives us the following key data:
- Luminous efficacy–how bright the light actually is
- Correlated Color Temperature (CCT)–whether the light is warm, neutral, or cool
- Color Rendering Index (CRI)–how true colors appear under the light
- Chromaticity coordinates and color purity–whether the color is accurate or shifted
- Luminous efficacy (lm/W)–how much light is produced per watt of electricity
How does it work?
An integrating sphere is a hollow sphere with its inner wall coated with a highly reflective diffuse white material. When the light source is turned on inside the sphere, the light undergoes multiple reflections and diffuse reflections across the inner surface, eventually creating a uniform light distribution on the sphere wall. By measuring the light energy on a small area of the wall, we can calculate the total luminous flux emitted by the source.
In simple terms: no matter which direction the light goes, the sphere collects it all, evens it out, and lets us measure it accurately.
Why does this test matter?
For LED bathroom mirrors, light isn't just about "turning on." It's about accuracy and consistency.
When a customer uses the mirror for makeup, shaving, or choosing an outfit, they need light that shows true colors. If the color temperature is off or the CRI is too low, what they see in the mirror won't match how they look outside.
What does this mean for customers?
Every batch of our LED mirrors has its optical data verified in the integrating sphere. The brightness, color temperature, and color rendering you receive are traceable and testable - not just "roughly right."
If you'd like to learn more about our optical testing, feel free to reach out anytime.