How much LED color temperature is good for the eyes?
2020-04-10
Color temperature is the most general indicator of the spectral quality of a light source. Generally expressed by Tc. Color temperature is defined by absolute black body. Nowadays, LED lamps and lanterns are very common in life. There are various colors, so how much LED color temperature is good for the eyes? Next, Yijingyuan Broadcasting & TV will come to explain it for you. A report pointed out that white cold light LED and blue light LED are harmful to the eyes and should be banned. These LEDs are mainly used for decoration, and the intensity of blue light emitted by them far exceeds that of natural lighting and traditional lighting. These high-intensity blue light will cause damage to the pigment epithelium of the retina and the sensory layer of the retina at the same time, thereby accelerating retinal aging and increasing the risk of macular degeneration. The biggest victims of LEDs are children under 10 years of age. Children of this age have neither cloudy lenses nor macular pigment, so they lack the ability to resist blue light.
How to distinguish the positive and negative poles of SMD LED lamp beads
2020-04-10
Many packages, like some 0603, 0805 and other SMD LEDs, will have a green "T" symbol on the bottom. One horizontal side of the "T" is the positive pole, and the other side is the negative pole. Some SMD LEDs will be marked with a silk screen similar to a triangle symbol, so the bottom side of the triangle is close to the positive pole, and the top corner is close to the negative pole. The lead of the light-emitting diode is generally longer at the anode and shorter at the cathode.
2020-04-14
When it comes to the grievances and hatreds of white LEDs, we cannot fail to mention RGB and white LEDs. The two have the same goal in different ways. They all hope to achieve the effect of white light, but one is directly presented in white light, and the other is in red, green and blue. Mixed light; one said that the other party's purity was not enough and the price was too expensive, the other retorted that he was beautiful in color, and criticized the other party for being old and declining. I am afraid that such a war will not stop in the short term.
The impact of the new coronavirus pneumonia epidemic on the LED industry chain
2020-04-14
The new coronavirus epidemic spread rapidly before the lunar new year. To control the epidemic, the government first announced the implementation of "closure" measures on several Hubei cities led by Wuhan, and then successively removed Beijing, Shanghai, Shenzhen and other provinces, counties and cities. Incorporated into closed management, and extended the Lunar New Year holiday, and did not officially resume work until February 10.
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