With the continuous development of technology, sunlight simulators have become essential equipment in many fields. When choosing a solar simulator, the difference between LED and xenon lamps becomes the focus of attention. So, LED vs. Xenon Solar Simulators: Who is closer to real sunlight?
Spectroscopic analysis. Spectral analysis is an important indicator to determine whether a solar simulator is close to real sunlight. The spectral analysis of the LED solar simulator shows that its spectrum is discrete, that is, the light is unevenly distributed, and the lack of red and blue light makes it difficult to simulate real sunlight. The spectrum of the xenon lamp solar simulator is continuous, the light is evenly distributed, and it contains the entire spectrum of real sunlight, which can better simulate real sunlight.
Color temperature index. The color temperature index is a parameter used to describe the color of a light source. The color temperature index of real sunlight is around 5500K. The color temperature index of LED sunlight simulator is low, generally around 4000K, which is difficult to simulate the color of real sunlight. The color temperature index of the xenon lamp solar simulator can reach more than 5500K, which is closer to the color of real sunlight.
Brightness adjustment. Brightness adjustment is one of the important features of the solar simulator. LED sunlight simulators have a small range of brightness adjustment, generally between 50%-100%. The xenon solar simulator has a larger brightness adjustment range, which can reach 1%-100%, which is more flexible.
Life & Maintenance.
Lifetime and maintenance are also factors to consider when choosing a solar simulator. LED solar simulators have a long lifespan, generally reaching more than 50,000 hours, and do not need to replace the lamp. The life of the xenon solar simulator is shorter, generally only about 2000 hours, and the lamp needs to be replaced frequently.
Taken together, the xenon solar simulator is closer to real sunlight. Although LED sunlight simulators have a long lifespan, their disadvantages such as uneven spectral distribution, low color temperature index, and small brightness adjustment range make it difficult to simulate real sunlight. When it comes to choosing a solar simulator, a xenon solar simulator is more suitable for simulating the needs of real sunlight.