At present, the mainstream white LEDs on the market are all made of blue phosphors excited by blue light chips. This method is relatively simple and low cost, so it is widely used. However, the color produced by such a product is not high, so how can we make a high-profile product?
The spectrum is able to achieve high performance and make high-performance products. The three primary colors R, G, and B are mixed to obtain a high-intensity index. Currently, the blue phosphor is used to excite the yellow phosphor, which has only two spectra (blue and yellow), and lacks a red spectrum, thus resulting in insufficient color rendering.
At present, the yellow phosphor has higher excitation efficiency than the red phosphor, and some red phosphors are added to the yellow phosphor to improve the index. It should be noted that after adding the red phosphor, the efficiency of the blue phosphor to excite the yellow phosphor is relatively lower. This is because the red spectrum is too long and covers other spectra, so the addition of red powder increases the index and reduces the index. Luminous flux.
With the release of the US Energy Star, the technical requirements are becoming more and more strict, and the competition in the industry is relatively increasing. It is very easy to achieve the Ra80. However, it is still quite difficult to achieve high brightness and high brightness at the same time. The pursuit of warm white light highlights, the industry's usual practice is to use yellow phosphor mixed red phosphor to achieve, but the product has a relatively low luminous flux.
Taiwan Hongdae Trading Co., Ltd. (the general agent of Japan's fundamental special chemical Asia-Pacific region) recently introduced the orange phosphor YLO-802B (peak wavelength 605nm) and YLO-804B (peak wavelength 615nm). Hongda said that these two powders can achieve Ra80 with 3000K or so of warm white light without reducing the luminous flux, and the stability and consistency are also very good. It can also be used with the yellow powder to make the indicator of positive white high 80, and the luminous flux is not reduced. .
Hongda pointed out that these two powders are unmatched by the phosphors of silicates currently on the market. The powder of silicate component is not resistant to high temperature and damp heat, and color temperature drift often occurs. This is also a phosphor that may be eliminated in the future, and new products will replace it. With the continuous development of the accessories industry, I believe that there will be more powerful products soon.
The spectrum is able to achieve high performance and make high-performance products. The three primary colors R, G, and B are mixed to obtain a high-intensity index. Currently, the blue phosphor is used to excite the yellow phosphor, which has only two spectra (blue and yellow), and lacks a red spectrum, thus resulting in insufficient color rendering.
At present, the yellow phosphor has higher excitation efficiency than the red phosphor, and some red phosphors are added to the yellow phosphor to improve the index. It should be noted that after adding the red phosphor, the efficiency of the blue phosphor to excite the yellow phosphor is relatively lower. This is because the red spectrum is too long and covers other spectra, so the addition of red powder increases the index and reduces the index. Luminous flux.
With the release of the US Energy Star, the technical requirements are becoming more and more strict, and the competition in the industry is relatively increasing. It is very easy to achieve the Ra80. However, it is still quite difficult to achieve high brightness and high brightness at the same time. The pursuit of warm white light highlights, the industry's usual practice is to use yellow phosphor mixed red phosphor to achieve, but the product has a relatively low luminous flux.
Taiwan Hongdae Trading Co., Ltd. (the general agent of Japan's fundamental special chemical Asia-Pacific region) recently introduced the orange phosphor YLO-802B (peak wavelength 605nm) and YLO-804B (peak wavelength 615nm). Hongda said that these two powders can achieve Ra80 with 3000K or so of warm white light without reducing the luminous flux, and the stability and consistency are also very good. It can also be used with the yellow powder to make the indicator of positive white high 80, and the luminous flux is not reduced. .
Hongda pointed out that these two powders are unmatched by the phosphors of silicates currently on the market. The powder of silicate component is not resistant to high temperature and damp heat, and color temperature drift often occurs. This is also a phosphor that may be eliminated in the future, and new products will replace it. With the continuous development of the accessories industry, I believe that there will be more powerful products soon.
Resolver is a kind of commonly used angle detection component, because of its simple structure, reliable operation, and its accuracy can meet the general detection requirements
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Yuheng Optics Co., Ltd.(Changchun) , https://www.yhencoder.com