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Xenon Lamp Light Source Light Power Adjustment Series FAQs

1. How to Adjust the Xenon Lamp Light Power?

Perfectlight Technology offers the following xenon lamp light sources:

Under constant voltage, we generally adjust the electrical power of the xenon lamp light source by varying the current of the xenon lamp light source, thereby achieving the adjustment of the xenon lamp light source's optical power. (Changing the distance from the light source to the target can also alter the optical power).

You can click this link to learn more ↓

Methods for Adjusting Xenon Lamp Light Source Optical Power


2. How to Determine the Specific Light Power Density Value?

The previous question addressed how to control the optical power of the xenon lamp by adjusting the current. However, to determine the specific light power density value, you need to measure it with a professional light power meter.

You can click this link for the operating instructions ↓

User Guide for PL-MW2000 High-Power Light Power Meter


3. Why Do Measurements Vary Significantly Depending on the Position of the Light Power Meter?

Variations in measurements taken with a light power meter due to different positions are often because some models of xenon lamp light sources do not produce uniform light spots. For non-uniform light spots, using a single area within the spot to represent the light power density can result in significant errors.

To obtain precise light power density values in such cases, you need to use the five-point method.

You can click this link to learn more ↓

Five-Point Method for Measuring Light Power Density, with Detailed Steps


4. Why Does the Current Automatically Increase During PLS-FX300HU Operation, Resulting in a Longer Reaction Time?

Microsolar 300 and PLS-FX300HU Xenon Lamp Light Sources

Both Microsolar 300 and PLS-FX300HU light sources have built-in optical feedback systems. When you activate the constant irradiance output mode, the xenon lamp light source detects its output irradiance value in real-time and adjusts it automatically to maintain the average irradiance within the set value over a unit of time. This enhances the precision of light exposure experiments.

As a result, with increasing reaction time, when the bulb's brightness decreases, its output irradiance drops. To compensate for the decreased irradiance, the xenon lamp light source automatically increases the current. Therefore, you will observe an automatic increase in the current value.


Has the above information answered all your queries regarding the use of xenon lamp light sources? If you have any other questions, please feel free to leave a message or call us at 010-61215662.