Question:“BATHROOMMASTER”produced heatingby infrared heating, didn’t it?but why will have a strong visible light? Because there is part of the energy is converted to visible light, right? whether can only produce infrared light as the infrared searchlight? In addition, I wonder if there is a way to generate heating with the infrared searchlight.

Answer: Very simple, “BATHROOMMASTER” heating element is the lamp, the lamp emission can not be done in the visible light (filament appeared dark red). It only produces infrared light
The lamp is open architecture, not in the bathroom of high humidity environment. can not stand the high humidity in the bathroom surroundings. Night vision system of infrared searchlight (by infrared LED) emitted infrared rays can also will be illuminated objects to heat up, but its power is very small,Each 5mm ir LED total power just only 30 MW, the infrared rays emitted by power within 5 to 10 MW,by that figuring, 100 pieces can only transmit 0.5W infrared.In contrast, “BATHROOMMASTER” each lighting power can reached 275W, the infrared emission power up around 200W. So People can not sense heat with the Night vision system of infrared searchlight. Of course, if you use high-power infrared LED, and increased in number When using this approach, the ir led strip also produces a hot.

Revert to Infrared LED light
Infrared LED light is an electromagnetic wave,The wavelength has a range of a few nanometers (1nm=10-9m) to 1 mm (mm).  a part of one’s wave band that It is a visible light in the human eyes.we could call it into visible light, visible light wavelength range of 380nm ~ 780nm, visible light wavelength from long wave band to short wave band divided into red, orange, yellow, green, cyan, blue, Wavelength is short than purple, we called it Ultraviolet rays . avelength is longer than red we called it infrared light.

Infrared light Applications：
The infrared led have a long historical standing. Uses. In 1962, People discovered how to form the Electromagnetic wave of infrared ray(using on GaAs on behalf of the III V compound semiconductor PN node that it could be phenomenon of Electromagnetic wave).The infrared led were used to . AlGaAsP class GaAs semiconductor materials to generate infrared ray , The forward voltage of ir led strip is about 3.3V.Ir emitting infrared ray. In generally refers to luminescence center wavelength of over 700nm LED. Much as a remote control and infrared light communication, distance sensor light source, a light source and a printer opt couplers hand piece light source etc.

The human eye could sense wavelength of light. The wavelength Is known as the main wavelength.and the peak wavelength is the wavelength of the spectrum. the wavelength corresponding to the energy of maximum value.For Blue ray as 470nm, green 520nm, yellow 570nm.due to the spectral distribution curve begins to rise just more fast. The wavelength remains sluggish when had a peak, the main wavelength integration two parts are mutually embedded to the main wavelength value ,so the main wavelength is longer than the peak wavelength;
With the example of the 589nm in yellow, orange light 605nm and red 630nm, we see that Those wavelength seems to start moving, smoothly and slowly beginning. over the peak after the more urgent the down, so the main wavelength is smaller than the peak wavelength . But anyway, the two difference is about 4nm.
To sum up:
*Wavelength of the main that Human eye could feel wavelength.
*Peak wavelength is the maximum wavelength at spectral energy distribution.
*The peak wavelength is short 5 nm than the length of the main wave.

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.