Why choose 365nm led chips for the purple flashlight for jewelry inspection?
365nm ultraviolet light is invisible light, which cannot be seen by the human eye. Due to the manufacturing process, the ultraviolet light emitted by the LED is a peak shape, mainly concentrated at 365 wavelengths, and a small amount of visible light exceeding 400nm will be generated, so the purple flashlight will also emit weaker visible light, not pure ultraviolet light. Therefore, after the qualified 365nm flashlight is turned on, it should have a faint white light with a little blue. If the brightness is high, it means there is a problem. If the light emitted is relatively blue or relatively purple, then there is also a problem.
A good purple flashlight also has a good converging ability. It can irradiate as much ultraviolet light as possible in the same direction to increase the ultraviolet intensity per unit area. This is useful for us to observe southern red, amber, dense wax, turquoise, jade, etc. It helps a lot.
Why choose 365nm led chips for the purple flashlight for jewelry inspection?
New product of 3535 violet 365nm lamp beads
Among them, fine inspection of high-end items such as jewelry, jade, jade, amber, invoices, stamps, etc., flaw detection (industrial use, precision scar identification of parts), fluid trace detection (oil stains, criminal investigation detection, etc.), fluorescent agent detection must choose it, Because there is no purple light, it can accurately distinguish the subtle traces. In other special occasions, 365nm 375nm violet light must be used to specify 365nm (usually 370~380nm). The price of 375nm violet light will be much cheaper than 365nm. 375nm is a threshold of the price of violet light.
375nm UV LEDs are basically suitable for authenticity identification. You can check foreign currency, jade, jade, invoices, etc. The effect is not as good as the 365nm wavelength, but it has a little purple visible light. Although the effect is worse than that of 365nm! But the cost performance is higher. , But it will be better than 395nm on curing UV glue. In fluorescent printing, 375nm is very cost-effective. 395nm violet (generally 395~405nm) UV violet LED, because of its low power consumption, high optical power, long life, and heat generation It is an ideal light source for replacing traditional UV mercury lamps. It has been widely used in: manicure, phototherapy, cosmetology, physiotherapy, medical treatment, light curing, currency counting and checking, ink printing, biological analysis, chemical inspection, Industrial leak detection, sterilization, mining, plant growth and other fields.
