The concept of healthy lighting is becoming more and more popular, and more and more people pay attention to the stroboscopic problem of LED lights. Today we will take a look at the in-depth analysis of the stroboscopic effect of LED lights.
In addition to being annoying, the flickering light can cause serious illnesses such as headaches, visual impairment. Even if the flicker is slight, for example at a high frequency of 100 to 150 Hz, it is invisible to our eyes, but the brain can still detect and react to it, with potentially negative consequences.
Almost all types of lights have stroboscopic, but each light has a different effect. For example, in incandescent and halogen lamps, the filament temperature reacts slowly to changes in current so you won't notice the effect of flickering. However, the LED strobe is caused by the driver. For current changes, the LED responds almost immediately, so the flicker is more noticeable.
And in daily life, you can see the strobe by using the mobile phone camera, but this is not a way to judge whether the product is qualified. The phone is not a strobe detection tool because the phone lens has a rolling shutter effect, but it can be a reference tool. If you use your phone camera under severely strobed lights, it's easy to find the light and dark ripples on your phone screen.
In recent years, the public's voices and requirements for health lighting are getting higher and higher. In order to effectively improve the quality of light, more and more consumers have already learned about the potential damage caused by stroboscopic. The stroboscopic problem must be faced with solve. Having a healthy light environment is a basic requirement, and choosing a good LED driver can minimize the negative effects of the strobe. Creating a healthy lighting environment requires the joint efforts of LED lights manufacturers and power supply manufacturers.
2018年10月26日星期五
2018年10月12日星期五
Four points to note about home lighting #4
It is well known that different colors can reflect a person's personality to some extent. The same goes for home lighting, the different arrangement of light colors can create various lighting atmosphere and partly mirror the character and aesthetics of the user. Nevertheless, too many colors in house-lighting will make it look like incongruous as well as can't reflect the lighting style well. Furthermore, if the difference between colors is too large, it will make people who live in such a lighting environment have the uneasy and unnatural feeling.
Some user like the colorful and dynamic lighting effects of outdoor advertising, and imitate them into their house. Excessive use of RGB LED light strips, colorful spotlights, and other muti-colors lights, even though seem very magnificent, in the long term, these colorful, flickering, changing lighting effects have the negative influence on vision. This kind of LED lights is applied extensively in advertising lighting, for its dynamic light can easily draw people's attention and we won't be in this light environment for long. Therefore, the lighting arrangement of different places is different, and other lighting plans should not be directly copied. Surely, there are a thousand Hamlets in a thousand people's eyes. In normal home lighting, in order to create a comfortable and harmonious lighting environment, we suggest that take the white-light LED lights as the main lighting of the house and decorate with a few of other colors of light. If dynamic, colorful lighting is required, it can be installed separately and controlled independently.
This is the last article of HOUSE-LIGHTING series. We hope these will help you in the selection of LED lights and arrangement of home-lighting.
Some user like the colorful and dynamic lighting effects of outdoor advertising, and imitate them into their house. Excessive use of RGB LED light strips, colorful spotlights, and other muti-colors lights, even though seem very magnificent, in the long term, these colorful, flickering, changing lighting effects have the negative influence on vision. This kind of LED lights is applied extensively in advertising lighting, for its dynamic light can easily draw people's attention and we won't be in this light environment for long. Therefore, the lighting arrangement of different places is different, and other lighting plans should not be directly copied. Surely, there are a thousand Hamlets in a thousand people's eyes. In normal home lighting, in order to create a comfortable and harmonious lighting environment, we suggest that take the white-light LED lights as the main lighting of the house and decorate with a few of other colors of light. If dynamic, colorful lighting is required, it can be installed separately and controlled independently.
This is the last article of HOUSE-LIGHTING series. We hope these will help you in the selection of LED lights and arrangement of home-lighting.
2018年10月9日星期二
Four points to note about home lighting #3
From last two posts, Four points to note about home lighting #1, and #2, we learned that the brightness and CCT are the key factors that we need to notice when select and install home lighting. The different brightness and different color temperature can create a completely different home lighting atmosphere.
In post #1, we are mentioned that the luminous difference between different rooms should be controlled in the reasonable range. Our eyes will be uncomfortable and fatigued by frequently adapt to very different brightness. Post #1 represented the overall brightness of the house need to be unified. Not only the whole, as well as the small areas need to pay attention to the contrast between light and dark.
Nowadays, decorative lighting became an important part of interior lighting. Most people like to decorate the living room with LED spotlights, LED strips and other decorative lights. In general, the decorative lights are not high-brightness, which can not provide enough light for our lives. For example, if we only turn on the decorative lights on TV background wall when watching TV at night, the strong contrast of light and dark will cause the eyestrain, even vision impairment in the long run. Likewise, it is also a bad habit that reading under a small desk lamp for a long time. The low-brightness LED light strips are the popular decorative lights in the bedroom, which can also be used as the auxiliary lighting, helping us see and it doesn't dazzling. Furthermore, adding the controller to dim the LED strips also a good method, which allows us to vary the brightness according to the actual requirement.
In short, the brightness of indoor lighting should be reasonable and similar.
In post #1, we are mentioned that the luminous difference between different rooms should be controlled in the reasonable range. Our eyes will be uncomfortable and fatigued by frequently adapt to very different brightness. Post #1 represented the overall brightness of the house need to be unified. Not only the whole, as well as the small areas need to pay attention to the contrast between light and dark.
Nowadays, decorative lighting became an important part of interior lighting. Most people like to decorate the living room with LED spotlights, LED strips and other decorative lights. In general, the decorative lights are not high-brightness, which can not provide enough light for our lives. For example, if we only turn on the decorative lights on TV background wall when watching TV at night, the strong contrast of light and dark will cause the eyestrain, even vision impairment in the long run. Likewise, it is also a bad habit that reading under a small desk lamp for a long time. The low-brightness LED light strips are the popular decorative lights in the bedroom, which can also be used as the auxiliary lighting, helping us see and it doesn't dazzling. Furthermore, adding the controller to dim the LED strips also a good method, which allows us to vary the brightness according to the actual requirement.
In short, the brightness of indoor lighting should be reasonable and similar.
2018年10月5日星期五
The main materials of LEDs
The LED is mainly composed of six materials: base, silver glue, chip, bond wire, epoxy resin, and phosphor.
1. LED base:
The base, also known as the LED support and LED bracket, inside the LED is used for conducting and supporting, which is generally formed by electroplating of the metal material. There are two types of LED base, that is, cup-shaped brackets and flat brackets, which are applied for concentrated-light LEDs and wide-angle LEDs respectively.
2. Sliver glue:
The role of silver glue is to immobilize the chip and conduct electricity. The proportion of the main components is 75-80% for silver powder, 10-15% for EPOXY and 5-10% for additives.
3. Chip:
The chip is a luminescent semiconductor material, generally produced by using GaP, GaAlAs, GaAs, GaN, etc., and its internal structure has unidirectional conductivity. Due to the chip can not emit white light directly, the white light LED is a mixture of a blue-light chip and a yellow phosphor.
4. Bond wire:
The bond wire is a metal wire used to connect the wafer PAD and the holder. In production, gold wires with a purity of 99.99% are generally used, its specifications are 0.9 mils, 1.0 mils, and 1.1 mils etc.
5. Epoxy resin:
The role of the epoxy resin is to protect the internal structure of the LED and slightly change the color, brightness, and beam angle.
6. Phosphor:
At present, most of the white LED light strips, LED bulbs, LED spotlights, etc. are phosphor conversion LEDs, that is, the blue light emitted by the chip is converted into white light by the corresponding phosphor. The phosphor conversion LED has a simple circuit, low production cost, and good heat dissipation, and is dominant in the current LED product market.
The original site:
http://www.mldrled.com/news/
1. LED base:
The base, also known as the LED support and LED bracket, inside the LED is used for conducting and supporting, which is generally formed by electroplating of the metal material. There are two types of LED base, that is, cup-shaped brackets and flat brackets, which are applied for concentrated-light LEDs and wide-angle LEDs respectively.
2. Sliver glue:
The role of silver glue is to immobilize the chip and conduct electricity. The proportion of the main components is 75-80% for silver powder, 10-15% for EPOXY and 5-10% for additives.
3. Chip:
The chip is a luminescent semiconductor material, generally produced by using GaP, GaAlAs, GaAs, GaN, etc., and its internal structure has unidirectional conductivity. Due to the chip can not emit white light directly, the white light LED is a mixture of a blue-light chip and a yellow phosphor.
4. Bond wire:
The bond wire is a metal wire used to connect the wafer PAD and the holder. In production, gold wires with a purity of 99.99% are generally used, its specifications are 0.9 mils, 1.0 mils, and 1.1 mils etc.
5. Epoxy resin:
The role of the epoxy resin is to protect the internal structure of the LED and slightly change the color, brightness, and beam angle.
6. Phosphor:
At present, most of the white LED light strips, LED bulbs, LED spotlights, etc. are phosphor conversion LEDs, that is, the blue light emitted by the chip is converted into white light by the corresponding phosphor. The phosphor conversion LED has a simple circuit, low production cost, and good heat dissipation, and is dominant in the current LED product market.
The original site:
http://www.mldrled.com/news/
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