At present, the mainstream hair removal methods in the market are IPL hair removal and laser hair removal, but the advantages of laser hair removal are obvious.
The principle of laser hair removal and IPL hair removal is to use the selective absorption principle of light, using a certain light source to penetrate the epidermis, so that the melanin in the hair shaft absorbs the most photon energy, and the heat of the hair shaft is rapidly transmitted to the hair follicle, so that the temperature quickly rises to 50-60 degrees, so as to destroy the hair follicle tissue and prevent hair growth. However, laser hair removal is less painful, safer, faster and longer, so it is more favored by consumers.
808nm wavelength, laser hair removal "gold standard" light source
Human skin is usually divided into 6 types, white skin is Ⅰ, Ⅱ type, yellow skin is Ⅲ, Ⅳ type, brown skin is Ⅴ, Ⅵ type. From the point of view of safety and avoiding side effects, when the skin color classification is (I to IV), there is a wide range of options, the use of 808nm semiconductor laser, 755nm emerald laser are effective, but 755 wavelength is short, which is harmful to the skin. When the skin color classification is (IV ~ VI) type, 1064 nm Nd: YAG laser is the safest choice, but the safety of light skin is not very high, while taking into account the largest demand for white skin and yellow skin on the market, so 808nm wavelength is the "gold standard" for laser hair removal.
808nm semiconductor laser hair removal device and IPL hair removal device work the same principle, but IPL actually belongs to high pressure gas discharge lamp, popular understanding is the flash lamp, the spectral range is 500-1200nm, so there are a lot of useless spectral heat absorbed by the epidermis, ultimately leading to hair removal efficiency is low and pain is stronger than laser hair removal. Hair removal also takes longer.
To sum up, the safe and stable wavelength, lightweight and portable appearance, comfortable sensory experience, cost-effective home 808nm semiconductor laser hair removal device is the new favorite of the consumer track.
808nm VCSEL a new generation of laser hair removal device revolutionaries
In recent years, the outbreak of VCSEL application scenarios has ushered in the best time point for the development of laser chips. With the maturity of 808nm VCSEL laser chip technology, its wavelength stability, low emission circular beam, high efficiency, no need for water cooling, low cost and many other advantages, perfectly fit the development trend of hair removal products to commercialization, home, lightweight, is leading a new generation of household handheld laser hair removal device change, become one of the new favorites in the field of home consumer electronics.
VCSEL is a vertical cavity surface-emitting laser, which is very different from the traditional edge-emitting laser (EEL) in structure, which makes up for the application disadvantages of traditional laser hair removal to a certain extent, and has unique advantages:
Stable wavelength, small temperature drift coefficient, no need for water cooling;
Luminous vertical substrate direction, easy to optical shaping, light path is simple;
The beam energy is uniform, will not produce local power too high burn skin phenomenon;
The size of active area is very small, which can achieve high packaging density and low threshold current, suitable for hand-held;
It is produced by wafer processing with low cost (traditional EEL requires a series of processes, such as cleavage, coating, packaging, etc.).
At present, the Brandnew 808nm VCSEL laser chip has been applied in batches in the client. With its advantages of small size, high beam quality, high electro-optical conversion efficiency, long life, low cost, stable performance and other advantages, it has become the best choice for the production and manufacture of household hand-held hair removal instrument, which is widely popular.
Considering the practical application requirements of end customers, CSEL can not only provide customers with 808nm VCSEL chip and high power package module. We can also provide customized solutions according to customers' requirements. By adjusting the power, wavelength, layout size and package design, we can quickly respond to the application requirements of different end customers and help customers win the market.
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