In this way, through proper focusing, the energy density of the laser can be lower than the glass damage threshold before it enters the glass and reaches the processing area, and exceeds this critical value in the desired processing area, and the laser generates pulses in a very short time , Its energy can cause the crystal to be heated and broken in an instant, resulting in extremely small white spots, carving a predetermined shape inside the glass, while the glass and the rest of the crystal remain intact.
With the development of modern science and technology, the color of the crystal award glass interior carving works has also become diverse. Using the optical principle that the inner carved part of the crystal glass handicraft has a strong reflection and refraction effect on the light, and the blank part has a better transparent function of the light, the micro-control circuit is based on the principle of the three-color color plate to distinguish the control method The lights of different colors are mixed on the "inner carving" image to transform a variety of beautiful colors, and then the original white inner carving image becomes colorful and unique.