Main wavelength and the peak wavelength of ir led strip

The difference between the main wavelength and the peak wavelength: WLP (peak wavelength): the wavelength of the spectral emission intensity or the maximum radiation power.
It is a kind of physical quantity, which is generally applied to the detection of a symmetrical monochromatic light. WLD (main wavelength): the eye can see the color of the main light of the corresponding main wavelength of wavelength.in the CIE1931 horseshoe coordinates, the intersection of Corresponding wavelength from the E point (0.33, 0.33). Usually you see a beam of light, it is not a single wavelength of light, it is composed of many wavelengths of light. Among them, energy light of a certain wavelength is greater than the other wavelengths of light,the wavelength is the peak wavelength(λp).each wavelength is Not Symmetric distribution in beam of light.human  was given the color from various combinations result of visible light.feeling it corresponds to a single wavelength of light, the wavelength value is lambda λd. vertical lines between a horizontal coordinate and curve at distribution curve, the curve is divided into left and right sides, the vertical line corresponding to the wavelength value is lambda λd.in General for light,It is important for us to refer lambda λd value, because the λd value better and reflect of color value more accurately;

High power led module 
High power infrared LED as a new type of green LED light source, energy saving, environmental protection, long life (server time), by the majority of customers to pursue. But the high powers infrared LED has problem that light decay have to face the problem. Uninterrupted decay, serious impact on the use of high-power infrared LED . At present,high-power infrared LED light decaymay be one of most important issue in led market. What causes a high-power infrared LED light decline?In Generally speaking, The light decay of high-power infrared LED has are two major factors:
* LED product itself quality problems:
1, the high-power infrared LED chip is not good, brightness decay faster.
2, the production process is flawed, high power infrared LED chip can not be good heat dissipation, resulting in LED chip temperature is too high, so that chip just looks attenuation.
*Two, the use of conditions:

1,The High power infrared LED need to drive with constant current,
there is a part of the high power infrared LED to use the voltage driving causes LED light decay.
2, the driving current is greater than the rated driving conditions（instead of the correct specifications）. In fact, it was a lot of reasons to cause the light decay of LED products, the most critical problem is the heat dissipation, although many manufacturers do not particularly pay attention to cooling problems but long-term use of high-power infrared LED products.The radiating effect of the LED chip itself thermal resistance, silver glue, substrate, and colloidal gold and so on; yes. That‘s a light decay thing.

The difficulty of Infrared touch screen technology

Environmental factors of light: The operational parameter of infrared receiving tube has minimum sensitivity and maximum light intensity, but the touch screen products can not limit the range of application ; , from dark karaoke rooms to Island high intensity of sunlight, as a product, it must adapted to Environmental.Rapid detection： in generally the infrared touch screen was at least infrared touch screen is the least size has 64 sets of infrared tube, which means that at least 0.4 milliseconds to complete an infrared detection.Reflection around, refraction, interference, infrared emission tube having a launch angle, the reception has a wide range of acceptance angle, if the surrounding reflection to a measure, you will find that the finger placed in any place .can’t block signal.To solve these problems, the best choice is to improve the resolution  ratio (R.P.) of the touch screen, but the ability to resist interference is better than that of the pulse mode,although capability of Anti-interference strength when select pulse mode, but this is have a big work problem that Corresponding speed of Signal Receiver (so there is a need for a fast speed in the receiver).but the Touch screen demand too fast .so These technological breakthrough are necessary to us in adaptive circuit, MCU software, mold design, translucent material selection and other aspects.

On the other hand Infrared touch screen by the infrared emission receiver to work,the performance and life of the infrared tube is was confident, any block of light can be triggers the touch screen responses. but the infrared touch screen using a lot sensors (is nearly 100 pairs), and shared peripheral circuit, which requires the sensor not only good performance, but also for 100 pairs of infrared diode “light resistance characteristics” and “junction capacitance” are consistent.
To sum up ，Infrared touch screen technology looked a bit hard. But With the development of science and technology .People will have overcome all difficulties to research and advance their Infrared touch screen.

LED lights can do some ultraviolet radiation，isn’t?

First, to talk about– from the point of view of electronic: Since the light source is used in LED, LED is a light emitting device by DC, in theory,That’s comparing LED and traditional lamp is different.traditional lamp mean energy-saving lamp, metal halide lamp, incandescent lamp. They were  power supply with AC. the frequency fluctuations in the exchange will be the traditional strobe light, LED lights do not flicker,but please note, be sure to choose that the surface light.

From the optical point of view to analyzing:

Infra-red bursts may be created by the traditional light source, you can be understood as the visible infrared, the wavelength at 780 nm above will damage the eyes.And LED light source, mainly blue chip excitation yellow phosphor, Light-emitting wavelength between 380-780nm, no ultraviolet and infrared, good uv LED strip light source, CRI is more than 85 of the spectrum (color rendering index, the higher the closer to natural light).

We have a few knowledge about service time of IR led strip . The problems with the led short life are mainly due to temperature too high. We try to enhance the service life of led strip, but The premise is that without affecting any infrared radiation of the running application. Firstly, the Component design and reasonable collocation is very important. First in the choice, our best selection of high power led, low-current LED bulbs. This way can protect the brightness at the same time, but also not need lead to large current, causing the overall temperature of the lifting.

In addition, the application of the substrate, the structure of aluminum is also a good choice. aluminum metal has better heat dissipation, As compared to other metal, Therefore, to ensure a constant temperature, It’s an absolutely that to kill two birds with one stone. Secondly , the problem is to reduce the exposure of infrared light, it can be installed to isolate aluminum metal plate between the LED infrared light and lens,

Again, is to cut the red light of the problem of exposure, can between the LED lamp and the lens in the installation of metal aluminum plate and isolation, These optical solutions are intended to solve its common problems of IR led.

UVLED surface curing is the use of photo initiator (photosensitizer) of the photosensitive, the formation of excited molecules in the ultraviolet light induced,  then decomposition into a free radical or ion, so that the unsaturated organic compounds, grafting, crosslinking and other chemical reactions to achieve the purpose of curing.

*The real role of UVLED surface curing:Main effect

1, environmental protection, because Europe is allowed to cover the OPP film packaging now, UVLED is environmentally friendly.

2, delay in the sunshine ultraviolet ink fade or change color Secondary effects High brightness, do not fade, and the pressure of the words, just press out will be very bright, and over time will become dim

UVLED handle Caution:
1, the odor volatile doctrinal, UVLED machine oil roller installation of Extraction device above

2, even if the entire box sticky done deal, gluing very difficult, because the general glue will not stick, it is recommended to use the UV machine, with UV LED. under the local box.

UV led strip progress and mature
Ultraviolet LED were able to break the pace of the traditional lamps in the research and industrial applications,V LED has been able to take advantage ofdifferent spectra properties exhibited.UV-A light (wavelength nm 315~400) is commonly used in curing applications, while UV-C and LED UV-B (nm 280~315 and nm 100~280) have the potential for medical application and purification/ disinfection.These advances thanks to materials research & development, and manufacturing process improvement . Here are just the talk about ultraviolet LED device applications。
In 2015,we have witnessed that a more efficient LED UV curing applications .it can be applied to cure more quickly, including the research work of life science and industrial applications, and optimize the server life time of the components. The application of UV LED in life science is playing a more and more important role,LED lighting technology can improve our health, services in the rehabilitation treatment, diagnosis and identification of life-threatening conditions.

This answer is No. LED light-emitting device made of a single wavelength or mixed wavelength spectrum.In fact,It is actually a band of light,
we has been measured with a spectrometer.the Liquid or solid material inspired by high temperature, emit light of various wavelengths, such as incandescent light, sunlight and hot iron electrode various wavelengths are emitted continuous spectrum.This spectrum is formed by the hot solids  ,liquids or high pressure gases

Follows we think the shape means As shown in the spectrum of a LED,now ,Most of led was used blue light(centered band at 460 nm)
chip and yellow light phosphor composition a superposition of continuous spectrum:

there are several LED, for example, traffic lights, each LED particle is only one color,the composition seen one as linear, emission of light must be in here region;

The other oneis a three-color LED(it contains the RGB three colors ).we could think that it is line spectrum, but there are still several or tens of nanometers in width) mixed spectra are as follows:

The effect—–You see that the white LED is made of blue + Yellow 2 or R+G+B3 kinds of take out .

In Generally,Can checking up Paper money for under 410 nm of Violet LED. But every one should know that different ultra-violet are different Result. where is the pathos?

The detection of fluorescence reflection of the color difference are their main factor. The violet led was “gray white fluorescent” for over 400nm(or equal to  400nm). it under 400nm lower(reflection fluorescence color tends to the “golden” low in 400nm)visual effect is more obvious, lower the band is getting higher price. So Detection equipment wavelengths of Violet both have 380~410nm in town.Violet LED around the Paper money as follows; major in currencies such aspound, US dollar, euro, franc used 360-380nm Violet LED, 365nm effect best in generally .pound, dollar, euro, and franc able to detection and 390nm or above the 390nm is no reflection fluorescence,380~390nm very weak. so they looks unfit for detection duty.

The advantages and disadvantages of ozone ultraviolet light strip disinfection

UV led strip Will produce a 185nm wavelength of ultraviolet light, this wavelength of ultraviolet light can be outside air O2 into O 3 (ozone), ozone is a active molecules, ozone can do Chemical reaction easily with other molecules.causing further decomposition and converted into oxygen, to get purpose that update of fresh air & deodorant sterilization.Because of the need of application, there are many kinds of uv products, such as low ozone (no ozone), ozone, high ozone, and so on.in Generally there are staff of the action,does not recommend the use of ozone ultraviolet light disinfection,Breathe in the oxygen (Contained ozone of air)，causing the body’s oxygen deficiency, the occurrence of dizziness, nausea, the impact of health.