3d Laser Engraving Technology for Crystal Photo

What is laser engraving technology?

Internal laser engraving is a processing technique in which a laser machine injects a certain wavelength of laser light into the crystal, causing a specific part of the inside to burst into bubbles, forming a pre-set shape in the form of a point cloud. It also refers to handicrafts processed by this technology.

Engraving is an ancient art. The traditional engraving process starts from the outside, sculpting the desired shape from the outside of the material, while laser engraving can go directly to the inside of the crystal for engraving.

For the laser to be able to engrave crystal glass, its energy density must be greater than a certain critical threshold for glass damage, and the energy density of the laser is related to the diameter of its spot at that point. For the same laser, the smaller the spot, the greater the energy density. By focusing, the energy density of the laser can be lower than the destruction threshold of the glass before it enters the glass and reaches the processing area, exceeding this critical value in the area that you want to process. The laser can be used in a very short time (on a nanosecond level). Pulses are generated inside the crystal, and its energy can instantly crack the crystal by heat, thereby generating very small white dots that form a point cloud. The predetermined shape is carved inside the glass to form the desired pattern through computer controls. This is the laser principle of internal carving.

What is a crystal? And what is a K9 crystal?

Quartz crystal is a colorless and transparent large-scale quartz crystal mineral. Its main chemical component is silicon dioxide, and its chemical formula is SiO2. The crystal can be colorless, purple, colored, or green and smoked, amongst others. The glass is luster, transparent to translucent, with a hardness of 7, brittle, and no cleavage; its crystal density is 2.56-2.66 g/cm3, and its crystal refractive index is 1.544-1.553, almost within this range; its crystal dispersion is 0.013, and its crystal melting point is 1713 ℃. When pure, it becomes a colorless and transparent crystal.

3d crystal

K9 crystal is also called K9 glass. It can also refer to glass products made of K9 material and used in optical coatings and other fields. Its light transmittance, refraction effect, hardness, and texture are all excellent. K9 material is optical glass, crystal clear. On the market, the products processed by K9 are called k9 crystal glass products.

What are 2D laser engraving and 3D laser engraving? What is the difference?

2D laser internal engraving refers to engraving a two-dimensional picture inside the crystal. When viewed from the front of the crystal, it is a three-dimensional picture. From the side of the product, it just looks like a few line segments formed by laser engraving. The 3D laser internal engraving carves a three-dimensional figure inside the crystal. From the front of the crystal, you see the front view of the three-dimensional figure. From the side of the product, you see the three-dimensional side view. The main difference between 2D laser engraving and 3D laser engraving is the three-dimensional visual effect. Please see the picture below.
3d engraved crystal photo

How does a 2D photo become a 3D photo?

3d crystal photo
In our 3D modeling system, there are a series of built-in standard portrait models. For a 2D flat portrait photo, all pixels are on a flat surface. The 3D modeling process by our engineers involves mapping the pixels on the 2D photo onto the 3D portrait model, and the software will automatically generate the 3D portrait model. Of course, before the texture part, the engineer will correct the standard portrait model according to the specific situation of the 2D portrait photo, such as adding a hat or glasses, etc. After establishing a 3D model that matches the 2D portrait photo, the 2D portrait image is mapped. In the process of generating portraits, there are certain requirements for 2D photos; if the 2D photos do not meet the requirements, our engineers will optimize the 2D photos or request new 2D photos.

How are 3D crystal photos made?

After our engineers get the 2D portrait photo, they will first examine the photo. If the photo has any big problems, then we will request a new one. If there are no major problems with the photo, the engineer will then make certain corrections and optimizations to the photo, before using the 3D modeling system to convert the 2D portrait photo into a 3D portrait model. At the same time, the 3D model is optimized to achieve the best input effect. After completing the 3D model, the model file is put into the laser inner engraving machine to complete the engraving.

how to made a 3d crystal photo
How to make a 3D crystal Photo?

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