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Analysis on the technology of laser engraving glass craft products
Mar 04, 2019

Analysis on the technology of laser engraving glass craft products

The internal engraving is a process in which a laser machine is used to drive a laser of a certain wavelength into the interior of a glass or a crystal to cause a fine burst of a specific portion of the interior to form a bubble, thereby defining a preset shape, and also refers to a process by this process. Crafted crafts.

Crystal laser engraving principle

These glass and crystal crafts are made with a computer-controlled laser engraving machine. In fact, most of the crafts usually seen are not real crystals, but artificial crystals. “Laser” is the most useful tool for “inside carving” of artificial crystals (also known as “crystal glass”). The laser engraving technique is used to "engraving" a flat or three-dimensional pattern inside the crystal glass.

The engraving is an ancient art. The general engraving process is carved from the outside, and the desired shape is carved out from the outside of the material, while the laser can be used to "cast deep into the hinterland" like Sun Wukong. Look closely at these glass and crystal products. There is no opening for the "knife" to enter and exit. In this regard, the laser is even better than Sun Wukong. When the monkeys go to the belly of the people, there must be a gap! The principle of laser engraving is actually very simple. The laser should be able to engrave the glass. Its energy density must be greater than a certain threshold, or threshold, for destroying the glass. The energy density of the laser at some point is related to the size of the spot at that point. The same laser beam, the smaller the spot. The greater the energy density produced by the place. In this way, by proper focusing, the energy density of the laser can be made lower than the destruction threshold of the glass before entering the glass and reaching the processing zone, and the laser exceeds this threshold in the region where the processing is desired, and the laser generates pulses in a very short time. Its energy can thermally rupture the crystal in an instant, resulting in a very small white point, carved into the glass inside the predetermined shape, while the rest of the glass or crystal remains intact. In fact, this is laser assisted imaging technology. With the development of technology, color engraving is also expected to be realized.

Colored crystal engraving

It is inevitable that crystal glass engraving works become richer in color. The inner part of the crystal glass crafts has a strong reflection and refraction effect on the light, and the optical part of the blank part has good permeability to the light, and the micro control circuit controls the several according to the principle of the three primary color palettes. The color of the lights, mixed in the "inside carving" image, changes a variety of beautiful colors, so that the original white internal carving image presents a colorful, dazzling effect.