Radiation meter of LED UV lamp
LED UV lamp radiometer based Blind filters and photomultiplier tubes, a radiometer is working on the region of solar blind ultraviolet, in generally, use a fixed field of view, gaze detection and photon counting system. also used to test ultraviolet led strip.

The UV sensor with a specific wavelength LED UV lamp radiation photons converge to a narrow band (240 ~ 290nm) filters in view of a specific.  Through the field stop to reach the receiving surface of the photomultiplier cathode tube, and then based on the photoelectric conversion photon counting system formed a  photoelectron pulse signal, receives and calculates the number of optoelectronic pulse signal unit time interval probe sent by signal readout module., data processor receives data and the wake measurement control and display. The characteristics of the LED lamp UV radiometer is high test sensitivity (usually up to a single photon detection level) and wide field of view (easy to aim at the target acquisition). Field, spectral response, linearity and sensitivity are the main parameters of radiometer.

what kind of relationship infrared with wavelengths of  human body ?The human body （like a ir led strips in operation）have  generated vast amounts of  far infrared in every moment。it was determined: far-infrared wavelengths near 9.6 micron emission in the human body! Wavelengths (5.6-15 microns) and far infrared wavelength emitted from the human body (the average temperature is 36.5 ℃, the temperature  translated into the wavelength as 9.4 microns) overlap,   in the same band range of frequency, it is possible to make cell of human body  in active mode, a phenomenon called resonance!It can activate cells, promote blood circulation, accelerate metabolism, enhance that the body’s own immune function! theResonance is laws of nature, Called resonance in mechanics,  Called  chord  in Acoustics,called harmonic in electronics 。Resonance can make the energy feedback effect is greatly improved. , greatly increase the range of motion of the original object! Can see this phenomenon through the experiment in vivo! From the microscopic point of view, due to the movement of human biological cell, including a large number of water molecules motion (vibration, rotation suchetc…) will cause internal transitions particles! When the transition from a high energy level to a lower energy level, with  a light energy to radiation of infrared light. This is far-infrared light-emitting mechanism! This movement is a normal physiological activity,   Conversely,when the far infrared emission wavelength close to the body of human, because the frequency is close to resonance (or the resonant), which can make human body cell and molecular motion( increasing physical activity)
.which is obviously to activate cells,  really boost metabolism!
the warm effect of human body is closely related with far infrared ray. By irradiating, the cell and moleculeswas involved in a collision and  enormous increase in   in human body., this will make the thermal effect is more obvious, more in-depth(to be able to penetrate the human skin approximately 4-5 cm)! In addition, because the human body continuously emit far infrared rays, in this frequency range, but also to the direct absorption of far infrared band to supply pelople’s bodies with Energy! We can say that The human body （like a ir led strip in operation）have  generated vast amounts of  far infrared in every moment, but also  absorption in the far infrared in every moment, at the same time, , human life is inseparable from the far infrared ray from the origin to the development! this Why it is so important for every one.

Dedicated infrared led for Monitor
There are three:
1, halogen bulbs + filter: far distance, power is larger, but the energy loss is big, because with filters, most of the visible light converted into heat energy by filtering, so this kind of lamp server time is very short, a lot of service issues;
2, laser tube: the farthest distance, but the Angle is small,
if  turned up the angle, because energy is limited, so distance is relatively shorter. Thus we can be seen that the laser tube is applied to the security industry is a very contradictory;
3, LED light emitting diode: it’s used widely, the serve time of single tube is very long (good quality LED tube factory nominal life as 100000 hours),but a big increase of led diode, the electric current is big, heat up, and server time will be shortened. At the same time, large current will cause a fire hazard. However, these disadvantages can be avoided. Infrared lamp LED products are divided into two categories, with and without red red explosive detonation.Have red detonation products using the wavelength of 850 nm infrared led
（ir led stip is probably the most commonly used）, in use, close observation, infrared light dark red light.   Without red detonation products using a 940 nm wavelength of infrared led,the infrared lamp surface without any light, so the more subtle.  The same camera, the 850 – nm wavelength of sensing it better than the 940 – nm wavelength to 10 times better.Infrared lamp has a higher efficiency, it should be the first choice as an infrared lamp.

I browse the ir led strips at www.ledlightmake.com, Here there are two problems about LED infrared.as follower.

**What is LED infrared wavelength of 940nm in meters?
Wavelength Refers to the nanometer, Is not equal to the number of meters. but if  had to Unit conversion, one nanometer is 10 ^ -9 meters (one-billionth of a meter), or 10 ^ -6 mm (100 millionth of a millimeter). Like centimeters, decimeter and metre.They are measured  units for length.
That is the same question we talked about before.(Please see: The light perceived by the human eye is measured in units called lumen-hours.) The equivalent of 4 times the atomic size,is smaller than the length of the individual bacterium.

**Would you please briefly introduce Infrared spectroscopy?
With A beam of different wavelengths infrared rays irradiation tothe molecular species, some of the infrared radiation of a specific wavelength is absorbed, recording the relationship curve between  transmittancepercentage of infrared and
wavelengths relationship.

Light wavelengths & camera 
In Nature,There are a variety of light wavelengths, from refraction of human eye can see different colors of light, which is caused by different wavelengths of light.  In fact, there are many rays are invisible to the human eye, the eye detection wavelength of light in the range of 320nm-760nm,
larger than 760nm is light that human eye can not see the light, such as infrared light by ir led stripsWith the progress of science, the invention of the camera, the camera can see most of the light wavelengths in theory,but in the process of using the camera on the emergence of a problem, due to a variety of mixed light,the camera can see objects reflected on the monitor that the human eye is different. Such as the human eye to see the green, through the camera then turns blue, produce color distortion.   In the past, in order to solve the problem of color distortion, in generally the CCD with a filter, the filter hampers infrared light mobility, color distortion during the day, but at night but not the night vision function.IR CUT is a kind of mechanical device, has two windows, one side for the  filter On the other side is a transparent glass,can be adjusted easily as needed. so the color distortion during the day , and the night is still a night vision function.

Can get this beautifully designed LED motion sensor light,    

You would think be it
more like a delicate Hoe furnishing , and are attracted by its pure white light body, full of praise for his designs, the appearance is good; but don’t ignore its true value , energy efficiency and intelligent is its biggest bright spot. As conventional lighting products, first of all we look at its specifications and electrical parameters:
Material of light body: plastic shell + frosted Hood
Base interface: E27 screw
Input voltage:AC 185~ 240V
Lamp power 1.5W/3W
Smart sensors: microwave radar sensors
Flux:250~300LM
Emitting color: White/Warm White
Source Type:LED light source
Server time: 100,00 hours

With its intelligent sensor characteristics, have a look at how it works(work theory of sensor lamp)in the middle of led lamp beads, there is a round knobs, this is infrared heat sensors, which has
the function of detecting moving human body, the inside of led lamp has a sensing element, with light effects test function, the light sensing element put the real-time lighting to convert the value
of control circuit signal， a control circuit determines whether the received value locked and on
standby. The sensor led lamp is running must meet the following conditions.

First light enough dark, but not dark, light induction value consistent with light conditions, the control circuit to unlock, induction lamp is in the standby state, when the human body enters into
the sensing range, the thermal sensing device detects a signal.It will be put the signal to the control circuit, immediately turn on the lights if a person continued activities within its detects scope, induction lamp has been lit, when people leave sensor device has been detected within the range of no activity within 60 seconds sensor lights automatically turn off, wait for the next work the sensing device to detect range has no  activity within 60 seconds sensor lights automatically turn off, wait for the next work. When people leave detect range .

Second, when the light is strong, such as by or feel naked eye can see objects, the light-sensitive Element put the real-time value to the signal light control circuit, a control circuit bases on signal value will lock led motion sensor light switch, the lamp is in sleep, in the detect range of led lamp infrared sensing device stop working even if someone activities within its scope, lights are not bright, will not have the power situation. Know the above specifications and operating principle, we are also very easy to organize,
summarize his advantage:

First intelligent; based on actual usage, user friendly design, the application of sensor control
technology, super energy saving.
Second convenient, to facilitate ordinary screw cap E27,185~240V AC power supply, easy to install.
Third safety; can save trouble often switch to control light, but also to avoid the dark to find the switch may lead to fall caused damage to human body
Four saving; base on action of people to control the lamp, completely eliminate energy waste.Even on the job long time, power consumption is only 3.6W live up to one’s name, energy-saving light bulbs really.

Fifth environmental protection, compared with incandescent and fluorescent bulbs.LED human induction lamp body does not contain harmful substances, such as glass, mercury(Hg),without UV light or ir light(Similar ir led strips make the irared light ), for humans and the environment, no damage and pollution, and induction lamp if damaged, can also repair and recovery, not arbitrarily discarded garbage.

If you will be curious and interested in this led lamp,please send email to customerservices@ledlightmake.com

Could Infrared lenses really be transparent clothes?
Because our factory(www.ledlightmake.com) make the infrared products (eg :ir led strips) So many of my friends have been asking me,Infrared Lens really pass through clothes?

Today we answer this question:

The Infrared lenses Only through some thin objects, not all can penetrate. Because infrared wavelengths longer than visible light,
so that it would be less subject to materials or textile surface reflection,

can through the beneath the surface of materials
so you can make the fabric more transparent and translucent ,
sometimes even can form a similar nude effect, of course, not all the clothes can be perspective,  the cotton material is safety, it cannot be infrared function perspective, nylon and cotton mixed material can achieve the perspective effect, especially the wet clothes in a swimming pool, take more clear, pure nylon and silk clothes transmittance is as high as more than 75%.Infrared by near infrared and far infraredcomposition, near infrared can penetrate people’s clothing, to the skin, and then reflected out, while the visible light can not penetrate clothing,  which achieved with night camera looks into other person’s clothing objects.

The led fiber optic illuminators
the led fiber optic illuminators systems used light source loaded to housing with fiber optic lighting The device call light-emitting device.The outer cover made of sheet metal or aluminum alloy. We sometimes call the light emitting device for projector. The light emitting device can be filtering a majority of infrared (Link the ir led strips produce IR) and Ultraviolet (UV) energy with the filter head. Therefore, fiber optic lighting system for indicating textiles, painting an food, cultural relic is ideal.Because the light is transmitted from the lamp to the end of the fiber Light emitting device can also be equipped with eight color glass fiber disc to achieve continuous or fixed color changes. In addition, the campaign color palette of available computer processing to provide special effects. For example: light timing changes or as the moment the light strobe. Finally, in order to increase the power for complex lighting device.Can also be several sets of front and rear vertical connection or the light emitting device connected in series? The light emitting device includes a light source, a reflector,ultraviolet (UV) and infrared (IR) filter and rotary glass color wheel(optional). According to the interior of the light source is different,, generally divide into tungsten halogen lamp series and metal halide lamp two series. The power of the light source is a halogen tungsten lamp as 50W or 75W 100W the input voltage of AC 12V（device with power transformer）.Applicable to a museum or exhibition hall on the temperature ， Humidity and ultraviolet, infrared control requirements have special places, metal halide lamp light source power is generally 150W or 25W, the input voltage of AC110V, suitable for the outline of a building façade lighting and so on brightness demand higher place, often used in making fiber chandelier.According to the different level of protection, in generally light emitting device is divide into indoor an outdoor two types rotary glass color plate can be equipped with up to eight colors automatically transform.The device can be controlled by the computer according to the change require. But also by the sound system output audio signal synchronization control。Apply it’s  own power supply AC plug 110V,50HZ.By light size and required luminance of single piece fiber generally depends on the power and bype of led resource. The optical fiber lamp is ideal that has a very small area of light and  Luminous flux output high lamp light source reflector mirror rear and lens front helps to effectively put the light transmission input fiber.The commonly used lamp comprises a 50 to 100W low power MR 16 70W to 250W and metal Halide(M-H) lamps there are 3W, 5W, 8W, 16W, 27W, 45W,75W of LED optical fiber light source color plate supply the meteor. Synchronization, wireless remote control, doubles models.

There are have usual infrared ray emit of ir led strips: ir light  940nm&850nm respectively.
Due to the ir led of 940nm infrared photosensitive ability is limited, 940nm at night and 850nm imaging distance there is a gap,so the application is not widespread. At present, the main application of 940nm series infrared light led strips in special field. The advantage is quite obvious.
First,Concealment stronger. Infrared 940nm infrared light strips to work at night, issued by the infrared spectrumare totally beyond human recognition, human eye is not visible directly. The camera using the lamp panel is widely used in the Concealment place, especially suitable for monitoring high confidentiality requirements, is not easy to be noticed.

Second, visual disturbance. Ordinary 850nm infrared light ir led strip at work will be issued more obvious infrared light, to people’s normal work and study there are some visual disturbance, easy to make people tired. Especially in the hospital and other places, too strong infrared light will affect the patient’s rest, causing unnecessary trouble. I f the camera is for internal use infrared light 940nm, that no problem? also need to confirm that the CCD machine inside the machine can sense infrared 940nm.

Why use wavelength of 850nm an infrared led in infrared cameras

There are many different wavelengths of infrared transmitting tubes in led mark, withwavelength of 850nm ir led strip or 940nm ir led strips is main force. So why use 850nm wavelength infrared in  infrared cameras ?

First of all, we come to knowledge about infrared cameras. In simple word, infrared camera is used to sense infrared and Image forming, it can be divided into 2 types: one is the passive infrared cameras, mainly for the military; another is active, mainly civilian. Any objects in absolute zero(-273 ℃) above will emit infrared light, but the infrared intensity, so in here we can only use passive infrared camera to capture images. But passive infrared camera, the price is very expensive, so not suitable for civilian & household use. The active infrared camera is the use of infrared emission emitted infrared, infrared is adopting the infrared principle to capture images, so the price is cheaper. Active infrared camera can receive infrared distribution center wavelength as 830 – 950nm. Within this range, Thus The 850nm or 940nm wavelengths of infrared transmitting led are suitable for, can make an infrared camera with a red explosion and none red explosion. Therefore, Infrared cameras are therefore not only 850nm IR led can be used, and not with the others. The reason to use 850nm infrared led is 850nm wavelength sensitivity thanin the 940nm wavelength sensitivity to 10 times better. as well as transmit power range, distance farther, by contrast, 850nm this slightly red bursts of infrared tube more suitable for application on the infrared camera, , and thus become the mainstream.