Have you ever had such an experience? As soon as the switch is pressed, the light will be "bright and blind". After buying the so-called "eye protection lamp", the eyes become more and more tired. What's the reason? What deserves our attention is the strobe!
Stroboscopic is one of the standards to measure the quality of light source, but it is often ignored by people. Although most of the stroboscopic can not be detected by human eyes, the stroboscopic light source will cause the illusion of slow vision or static, which is very easy to cause accidents. Moreover, stroboscopic light source is closely related to neurological diseases such as migraine, headache, autism, visual fatigue and discomfort.
Q: What is stroboscopic?
A: As the name suggests, stroboscopic refers to the continuous fluctuation of light during the switching cycle. Is a flicker due to frequency. Stroboscopic is that the light source will flash rapidly and repeatedly over time. In the vernacular, I feel the light beating and unstable. This phenomenon is the so-called stroboscopic.
Q: Why is there a strobe?
A: Almost all types of lamps are easy to flash, including incandescent lamps, halogen lamps, and even led bulbs. But the effect of each light is different. For example, in incandescent and halogen lamps, the filament temperature responds slowly to the change of current, so you won't notice the flickering effect. For current changes, LEDs respond almost immediately, so flashing will be more noticeable.
Compared with LED lighting products, dimming is a necessary function, and dimming is just an incentive to cause stroboscopic. When the product is loaded with dimming function, the stroboscopic will often be further exacerbated. Especially when the dimming is dark, the fluctuation depth is relatively large. For lighting products with dimming function or claimed to be connected to dimming controller, the stroboscopic performance shall be measured when dimming is the brightest and dimming is dark.
Q: What are the hazards of stroboscopic?
A: In addition to being annoying, the stroboscopic light produced by lighting can also cause some serious diseases, such as headache, visual impairment, or, in extreme cases, seizures. In particular, we need to pay attention to the impact of stroboscopic on vision. Children with visual development at home will cause eye problems such as myopia and amblyopia.
Q: How to detect stroboscopic?
A: The simplest way is to detect through the camera function of the mobile phone:
Step 1: take out your mobile phone and turn on the camera mode;
Step 2: aim at the luminous part of the light;
Step 3: check whether the picture in the lens is deleted. If it is deleted, there is a strobe.
Using mobile camera to detect stroboscopic: useful, but unscientific! Let's take a look at how auches dimming power supply has passed the rigorous test of the market?
As a supplier of domestic LED dimming power supply and control system and a service provider of intelligent lighting solutions, Ochs has always paid great attention to the stroboscopic problem of driving power supply at full load and dimming.
Without dimming, the stroboscopic is almost zero. When dimming, the power supply adopts 2KHz high-frequency modulation, and the data falls in the unaffected area, which can be called "no stroboscopic". No flicker was found by visual inspection on site.
According to the technical mechanism of stroboscopic, in the actual lighting application, there are not only the factors of power supply, but also the factors of technical performance of electric light source, unreasonable lighting design and so on. Therefore, it is particularly important to select the appropriate dimming power supply manufacturer.