Application of 355nm UV Nanosecond Laser in Glasses Marking

With the improvement of living standards, consumers' demand for glasses has diversified. The role of glasses has changed from improving eyesight and protecting eyes to becoming a fashion item.

Due to the increasing demand in the eyewear market, there are a wide variety of eyewear products on the market. In order to highlight the characteristics of their own products and combat counterfeit and shoddy products, more and more eyewear manufacturers use laser marking to mark the brand, logo, specification, model, material, function, etc. of the glasses on the frames or lenses. Text information, never fall off, beautiful and has anti-counterfeiting effect.

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The mechanism of laser marking is that the focused high-energy density laser acts on the surface of the spectacle frame or spectacle lens material, and makes it physically vaporized in a very short time, marking permanent graphic information to increase identification. The degree and anti-counterfeiting effect, the depth of the mark can be determined according to the needs of the manufacturer.

Spectacle frames are mainly made of polymer nylon materials, plastic sheets, nickel-titanium alloys, nickel-copper alloys, and resin injection molding, etc. The lenses include glass lenses, resin lenses, polycarbonate lenses, nylon lenses, and acrylic lenses. In view of the high single-photon energy of 355nm ultraviolet light, the generally high absorption rate of materials, and the characteristics and advantages of "not picking materials", the 355nm ultraviolet nanosecond solid-state laser developed and designed by RFH can be used for high-quality laser marking of spectacle frames and lenses. Help to enhance the brand effect of glasses.

Moreover, its beam quality is excellent (M2<1.2), it can be easily focused to obtain a micron-level spot diameter, and the lines are thinner when marking. , which cannot be achieved by traditional ink printing; at the same time, the marking time is very short, and some simple markings can be done overnight, and the efficiency is very high; non-direct contact processing, it can also well protect glass, resin and other material lenses when marking; easy The advantage of being integrated into the production line, for a commodity such as glasses, with an output of hundreds of millions, high marking efficiency can save a lot of costs for manufacturers.

From functional products that let people see the world more clearly, to fashion products that appeal to emotions and show taste, glasses are turning gorgeously. At the moment of turning around, with the addition of laser marking, it adds a full sense of technology and makes the glasses glow with "light".