Brief Analysis on The LED-induced Ocular Tissue Damage
A lot of his writings i
Recent years, there are a lot of articles discussing about LED-induced Ocular Tissue Damage. these are just empty words. spectrum does not matter one whit to the traumatic eyes.

You can’t look directly into any high power led (looking straight at LED), It may even be possible to make some pain for eyes. Actual investigation also shows that it has extremely small influence, When comparing LED and other light source. the user was a stickler for the correct usage of LED. LED doesn’t hurt your eyes.
So Please feel free to use any of led product.

We need to first understand Three kinds of LED in design model systems. were RED , BLUE and GREEN. then we to control LED Module with MCU’ouput pin .

In order to accomplish output job(output different color) they’ll have to work hard and work together. Let’s now look at the connect circuit of the RGB-led to see how this works.

The PWM (Pulse Width Modulation) is very important.. Actually, PWM kept switch(a signal switched between on and off.) . the PWM frequent would take 60Hz at a minimum.

LED pwm drive analysis and design threads.
* A common MCU with a PWM output pin . If there is no PWM output pin. To emulate PWM with MCU timer .
* If the led’ currently (<=200mA)is too small, you may use small power triode. such as S8050
Instead, If the led’ currently is too big , we should adopt big power drive module. such as ULN2003.

Manicure lamp
Manicure lamp are devoted to dry oil gum(for example :Apply white nail color French oil gum, absolutely unparalleled ultra-white, deposited with the Resurrection of the water for30 seconds removable.), the manicure lamp is divided into LED lamp and UV lamp (just like uv led strip)base on light theory . let’s compare LED lamp and UV lamp:

Efficiency:
Due to UV lamp wavelength is short than LED lamp wavelength ,so UV lamp was efficient and reliable.
UV lamp wavelength as 365mm
LED lamp wavelength as 400mm-500mm
But LED lamp will be done fast ,It only takes about thirty seconds.
and wait for three minutes to fix oil gum when use uv lamp.

Degree of comfort:
The UV lamp maximum strength and super comfort. because it is cool light source .i t will not like the led light bulb to produce heat.

Now Choose the result for which you want to be implied

LED shape of the new material.
With the fast development of led technology，led is a veritable cool light resource . work temperature is lower than tradition lamp. The design of led production can use the application of new materials. And, in this cases, wastepaper pulp may be blended in the furnish. . Various shapes of returns like triangular, semi-circular and trapezoid-shaped are available for cresting your own led production shape . Tradition lamp may only use that the Refractory plastic to make production shape. which will make products less environment friendly.
This led shape is the latest model with scrap paper as follow:

LED penetrating

First we are talk that what led penetrating will be at led working. in foggy weather, any lamp penetrating capacity has been greatly reduced . the foggy weather has caused so much moisture that it’s misting up and the mists cause light diffuse . therefore, we feel like that the foggy weather to absorbs light.
The strength of led penetrating is determined only by color temperature (K value).the lower color temperature ,the stronger the penetrating. converse is also true, the higher color temperature ,the lower the penetrating.
4200K = 3500 Lumen = 372500 CD

4500K = 3350 Lumen = 362500 CD

5000K = 3200 Lumen = 352500 CD

6000k = 3000 Lumen = 332500 CD

7500k = 2900 Lumen = 332500 CD

8000k = 2800 Lumen = 312500 CD

10000k = 2750 Lumen = 300000 CD

12000k = 2600 Lumen = 282500 CD

14000k = 2500 Lumen = 262500 CD

Perform transformations between led power and led illumination
We can perform transformations between led power and led illumination relational data.

We would studied under same conditions of illumination by table as follows:

Why led was effective for skin disease?

Different wavelength formed different light color ,

in medicine , 400nm to 600nm was a common light . 400nm uv led is the role of bactericidal anti-inflammatory. Because of the skin can absorbs wavelength of light . uv led strip resolve the germs . and Regulate sebum secretion, prevent skin disease; suitable for combination and oily skin.
used both 400nm and 600nm is best. the main function of 600nm light is treating blood-stasis syndrome. the red light can promote the reconnection of the blood circulation of flap and increase the survival length of the blood cell . it also can increase the permeability of blood capillary. synthesis metabolism to speed up, Repair the expansion of capillary vessels .

Comparison table of Color temperature
the light color& their whites appear too bluish , the color temperature is getting more and more low. in a day ,the color temperaturetend to gain depth of color with time increased:

* The sunrise at the light color was yellow ,
color temperature as 3，000K；
* The noon Sunshine was white . color temperature in      4，800-5，800K；
* But the color temperature was 6，500K in the cloudy noon；
*The light color was crimson before sundown and  the  color    temperature had been reduced to 2200K

Wavelength and color temperature
In natural, the wavelength may be used to decide the light color.the unit of wavelength is nm. which represents the different light color has different wavelength. please refer to list of wavelength as follows:
red: 650nm
green：555nm
yellow：590nm
orange：610nm
blue：500nm
ultraviolet:310nm such as:uv led strip

The wavelength are only targeting chromatic light . the white light is outside the range of wavelength unit. unit of white lightthrough color temperature of representatives.

The bracket of Imitation of lumen encapsulation
The high power led module provide a bracket to toggle led core. there are has three kind of bracket for led user to choose.

Copper brackets: The copper sleeve comprises a upper copper sleeve and a lower copper sleeve fixed inside the supporter by the coaxial; copper bracket owned high thermal conductivity, high electrical conductivity and excellent high temperature strength, high-temperature creep resistance, good wear-resistance and so on, It is found out from test that, the efficiency of white LED using copper brackets is higher than iron brackets, moreover, the light decay is lower about 10%..but That is a little higher than iron bracket.

Iron brackets: an iron frame to hold the led module straight are all iron bracket their ability to conduct both heat and electricity is the relatively poor.the iron bracket has favourably priced.

Aluminium alloy brackets: aluminium alloy may be used for led brackets. The Aluminium alloy brackets has the advantages of simplicity, convenient wedge connection, and good firmness. and aluminum alloy brackets doesn’t rust(aluminium is a noncorrosive metal). so the bracket costs are higher.