Is it useful is there a uv led strip verify the natural emerald？

At present, the jewelry market has several testing method for folk jewelry, Further studies will be needed to see if these method have any value.

Use ultraviolet led strip to verify natural jade is best way.
Now, let’s find out that jade classification for jewelry. The division of the stars into four classes of jade . They were A、B、C & B+C . A is natural jade . B is through artificial filled jadeite.
C is through high pressure and high temperature dyeing jade. B + C goods is both filling and dyeing jade. because natural stone did not produce the reaction of fluorescent reaction, natural jade does not shine under the irradiation of ultraviolet led.

Experts explain: because B cargo jade and B + C cargo jade implants are epoxy resin. They will produce the reaction of fluorescent reaction under the irradiation of ultraviolet led. This is an important theory in identify work. but C cargo jade not filling, just dye, also can’t produce the reaction of fluorescent reaction under the irradiation of ultraviolet led.   so This application is for B cargo jade and B + C cargo jade use only.

         How to choose the voltage and current of the UV led strip
It is important to first determine the total power PO when design of uv led strip, then to calculating the voltage U, current I. And then there is the most direct method: based on the actual printing process of the customer confirmation uv led strip power. Study on Free Electron ‘ s Move-speed by voltage differences .
We have analyzed various factors— current and voltage:

1, UV led operating voltage,
(1)determine the current
(2)then the calculation of the voltage from the formula P=UI.
A basic principle is big current and low voltage, because of the voltage is low compared to safety.

2, UV LED current density. Current density may have been adjusted to between 1.7 ~ 4A/cm,The reason is that the current density can not be too small, otherwise the UV output efficiency is low; the Second is the current should not be too large, otherwise the high heat loss and the circuit is not safe.

UV led strip wavelength table

Ultraviolet light (UV- A):Long wave band(Main wave 365NM)
Ultraviolet light (UV- B):MID wave band(Main wave 297NM)
Ultraviolet light (UV C):Short wave band(Main wave 253NM)
Ultraviolet light (UV-V):100~108NM(Main wave 184.9NM)

Contrast the UV led with the Mercury Lamps

Ultraviolet germicidal lamp in which the nerve function influences

Germicidal is only beginning to understand for uv led strip. It is much more powerful than have improved the spiritual enlightenment. In other words,The uv led has a large influence on the nerve functional index . now let ‘ s talk about ultraviolet lamp and Human Nerve.
Ultraviolet radiation is one important reason for the shift. It’s can changed brain waves. clinical trial results:
The Vitiligo and psoriasis patients, uv led may be good to refreshment, regulation of nerves. the effect of feeling fluctuation can be well controlled, more favorable to disease control and rehabilitation.
the patient can be used in moderation uv led. in a way that is more favorable to maintaining returning to normal.. For psoriasis, eczema, skin pruritus patients, application with appropriate intensity of ultraviolet radiation, can reduce that central nervous system (CNS) and the peripheral nerve of excitatory or eliminate the itching,
UV lamp in the life of a very important role, make sure the uv led is used effectively.

UV curable inkjet apply to spray painting
The new technology of ultraviolet curing spray painting This new technology could greatly shorten the paint time from 10 days to 3 minutes can make the production of one square meter of high-grade paint

Spray painting printing ink of UV curable including active A mixture of paint-thinner , the synthesis of acrylate, nano paste, light triggered agent, dispersing agent, defoaming agent, can hat can quickly to cured under UV irradiation and meet the requirements of high-speed printing, the uv led technology are used around print in glass, ceramics, aluminum plastic board or similar hard materials and pet, PC, PVC or similar soft materials. the production shows
that good adhesion and the uv light curing speed was faster.

How the force acts on ink with uv led strip

UV curing ink (Curing Printing Ink Ultra-violet) referred to as UV ink, when light falls on certain things(applied a layer of oil to the surface)it will be curing promptly.it’s a part of the process for uv led strip.

The main advantages of UV ink are: (1) without solvent; (2) the drying speed is fast, the energy consumption is little; (3) the luster is good, the color is bright; (4) the water resistance, the solvent resistance, the wear-resisting performance is good.
the photoinitiator (photocuring agent) of UV curable ink is a kind Chemical compound that are more inspired by light, After the absorption of light, it is excited to be free radicals, and the energy is transferred to the photosensitive molecule or the light crosslinking agent, so that the UV ink has a light curing reaction. At present, UV ink has become a more mature ink technology, its pollutant emissions almost zero. Except without solvent, UV ink if there is not easy to paste version, mesh point clear, ink color bright, excellent resistance to chemical properties, dosage, etc. advantages. The ink with uv led strip is become a normal technique

LED has Penetrating
None of Penetration force of xenon lamp or a halogen lamp is either good or bad. Xenon and halogen ,in fact, only two different lighting system(principle of lighting). This issue is just relevant to (k value).Because CT(color temperature) is constant value only K cares .Generally speaking, color temperature lower penetration power better. On the contrary, the higher the temperature penetration worse.

The color temperature of misunderstanding understanding, not temperature color (K value) is larger, the higher the brightness

This is the physical laws of spectroscopy: color temperature and brightness is inversely proportional . the higher the temperature, the lower the brightness
Please look data as follows;

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

Ranging from 3000K to 20000K LED color temperature on the market
European Union have strict rules for LED color temperature. the highest color temperature is not more than 5000K.The relationship between the color temperature and light color are probably as follows:

3000K- golden yellow;

4000K- yellow with white;

5000K – white;

6000K – white slightly with blue;

8000K- blue;

10000K- violet.

The important parameters of uv led strip Some of them include
We have used another useful parameters in uv led strip. they are of uv led gauge.
1, uv led power: the actual power consumption of the uv led. Here generally refers to active power.

2, uv led current: UV lamp work, the current flowed over the uv led.

3, UV illumination: according to the power is divided into high power measurement and small power measurement.

High power measurement method: The uv led strip from the test platform 1.0 or 1.5m high, the unit is mW/m2 (2 MW / M) or w/cm2 (mw/m2=0.1 w/cm2).

Small power measurement: The uv led strip from the test platform 30mm/50mm high, at the UV illumination value.

4, the uv led voltage: UV led at work., The voltmeter shows that the voltage between the two poles of the uv led as the uv led’ voltage.

Uv led strip in the Modern Agriculture

Now along with the social science and technology development, the Agriculture’tools advancement acceleration, we will have a better idea that Green Food includes crops . Many pesticides are irritants. And The more pesticides are used, the more resistant the insects become so the more pesticides have to be used. It’s a vicious circle. Here comes a solution: with UV led strip ,Result showed that the control effect of UV led was better than that of insecticide.

Typically The pest across the surface of plant. small insects such as beetles, although it will be flush to the ground, but will not be killed. applied that UVC and ultraviolet light (wavelength: 254 nm) to the pest. it permanently disarmed it.