Applications of Fly laser on Glass: Detailed Description and Practice
The interaction between Fly lasers and glass is essentially a delicate interplay between light energy and glass (an amorphous solid). By controlling laser parameters, a variety of effects can be achieved, from marking to cutting to internal three-dimensional engraving.
I. Surface Marking and Engraving
1. Application Description:
Lasers are used to create permanent patterns, text, serial numbers, or QR codes on glass surfaces. This does not involve "engraving" grooves; rather, the laser causes two primary changes to the glass surface:
· Microcracks: The laser's irradiation point experiences instantaneous heating and cooling, forming countless tiny cracks. These cracks diffusely reflect light, resulting in a visually matte white mark.
· Controlled Foaming: Lasers with higher energy or specific wavelengths can slightly melt the glass surface and generate tiny bubbles, creating a mark similar to a frosted finish.
2. Specific Examples:
· Wine Bottle Brand Marking: On the glass bottle of a high-end liquor bottle, a Fly laser UV marking machine inscribes a unique anti-counterfeiting QR code and production batch number at the junction of the cap and bottle at a speed of 1000 mm per second. The marking line is only 0.1 mm wide, clear, and cannot be completely removed, effectively preventing cross-selling and counterfeiting.
· Mobile Phone Glass Panel QR Code Scanning: On the smartphone glass cover production line, a laser engraves a microscopic 2x2mm QR code on the edge of the glass, used to track the quality data of each component throughout the entire manufacturing process.
II. Invisible Cutting and Contouring
1. Application Description:
This is Fly laser's most advanced laser glass cutting technology. Instead of burning through the glass directly, it focuses the laser beam on the lower surface inside the glass.
· Internal Modification: The laser moves rapidly along a pre-set cutting path within the glass, creating a continuous modified layer composed of microcracks.
Mechanical Separation: Subsequently, by applying mechanical stress (such as bending) or thermal stress (using a CO₂ laser to irradiate the modified line), the glass is neatly split along this perfectly invisible score line.
2. Specific Examples:
Sapphire Glass Screen Cutting: The sapphire glass used in smartwatch covers is extremely hard, making it impossible to cut with traditional blades. Using an ultrafast picosecond laser, a watch dial shape is scanned inside the 0.4mm-thick sapphire glass. Then, with a gentle push, the cover is perfectly separated from the substrate, leaving smooth edges and virtually no loss of strength, eliminating the need for extensive grinding and polishing steps.
III. Internal 3D Engraving
1. Application Description:
Leveraging the transparency of glass to lasers of specific wavelengths, the laser focus is precisely controlled within the glass. At the focal point, the laser energy is sufficiently high to create a tiny burst point within the glass, resulting in a matte white dot. By distributing thousands of these dots in three-dimensional space under computer control, complex 3D patterns can be created.
2. Specific Examples:
· Crystal Trophy Interior Engraving: A piece of pure, water-like K9 crystal glass is fixed to a laser engraving machine. Software controls the laser focus to "move" within the crystal, generating hundreds of micro-bursts per second. After a few minutes, a three-dimensional company logo or award winner's portrait magically emerges within the crystal, creating a crystal-clear image that exudes artistic value and a sense of value.
IV. Drilling and Micromachining
1. Application Description:
Using high-repetition-rate pulsed lasers (such as UV picosecond lasers) to etch glass point by point and layer by layer, it is possible to create extremely small, high-quality micropores and microchannels.
2. Specific Examples:
· Smartphone 3D Sensing: A hole with a diameter of only 0.8 mm is required in the camera cover glass of a smartphone to allow light from an infrared flood illuminator to pass through. A UV laser can complete this hole in 0.5 seconds, creating vertical, crack-free walls that ensure smooth passage of infrared light without compromising the overall strength of the glass.
Microfluidic chip processing: Lasers etch microchannels thinner than a human hair onto glass chips used in scientific research. These channels are used to manipulate microliter or even nanoliter volumes of liquid for applications in biomedical testing and chemical analysis.
Why is Fly Laser an ideal tool for glass processing?
Non-contact processing: No mechanical stress is generated, preventing breakage of brittle glass.
High precision: Easily achieves micron-level processing accuracy.
Flexibility: Software-controlled graphics eliminate the need for mold replacement, making it suitable for complex graphics and personalized customization.
Clean and environmentally friendly: Dust-free and chemical-free processing.
In summary: From the glass panel on your phone to the wine glass in your hand to the high-end chips in the laboratory, Fly Laser technology is redefining the application boundaries of this ancient material with the precision and intelligence of light, driving the continuous development of consumer electronics, art decoration, and cutting-edge technology.
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