2.5D laser engraving, also known as "false three-dimensional" relief engraving, is a transitional technology between traditional 2D flat engraving and full 3D stereoscopic engraving. It forms a relief effect with a height difference on a two-dimensional plane by controlling the depth variation of laser energy, thereby simulating three-dimensional visual layers without changing the overall three-dimensional contour of the object. The core lies in the use of high-energy laser beams for layer-by-layer ablation or chemical reactions on the material surface, and achieving a three-dimensional effect through precise depth control strategies:
Energy gradient control: By adjusting power, pulse frequency and scanning speed, the laser can control the amount of material removed, achieving high-precision engraving and capable of engraving complex patterns and fine details. For instance, on a metal surface, deep engraving occurs in high-energy areas while shallow engraving forms in low-energy areas, thereby creating a height difference.
Dynamic focusing technology: Equipped with a Z-axis automatic lifting system, it can adjust the focal length in real time during the engraving process to ensure consistent spot size on curved or inclined surfaces and maintain uniform engraving depth.
Grayscale mapping driver: Convert the grayscale image of a 3D model into depth instructions - the darker the area in the image corresponds to the deeper the carving, achieving automatic conversion from 2D images to 2.5D relief.
Unique visual effect: It can to a certain extent display the three-dimensionality and depth of the object, making the carved work look more vivid and realistic, and having a stronger visual impact.
High processing efficiency: Compared with traditional hand engraving or mechanical engraving, 2.5D laser engraving is fast and can complete a large number of engraving tasks in a relatively short time, improving production efficiency.
Strong material adaptability: It can be applied to various materials such as wood, plastic, metal, glass, stone, etc., and can meet the needs of different customers.
Application field
Advertising signage and sign production: Company brands, logos, signs, etc. can be precisely engraved on materials such as metal, wood boards, and acrylic to create personalized signboards with a three-dimensional effect, which can be used in store storefronts, corporate display walls, and other occasions.
Gift and souvenir production: We can create unique souvenirs and gifts based on customer needs, such as wooden wine glasses, crystal balls, metal business cards, etc. We can engrave the customer's name, date or specific patterns on these gifts to enhance their exclusivity and commemorative value.
In the field of home furnishing and decoration: Beautiful patterns and textures can be engraved on various materials to create various decorative items, such as murals and ornaments, showcasing unique artistic charm.
In the field of industrial manufacturing: 2.5D laser engraving on some industrial products can enhance the aesthetic appeal and recognition of the products, and can also be used for product identification and marking.
2.5D laser engraving, with its unique "planar three-dimensionalization" capability, has opened up new paths in fields such as industrial signage and art creation. The essence of its technology is to achieve a delicate balance of three-dimensional effects through two-dimensional means - it not only avoids the high cost and complexity of full 3D processing, but also transcends the visual limitations of traditional 2D. With the continuous optimization of technologies such as dynamic focusing and gray-scale mapping, this field is accelerating its expansion towards micro-nano precision and intelligent control (such as AI automatic deep optimization). In the future, 2.5D technology may become a key springboard connecting planar engraving and true three-dimensional manufacturing, driving laser processing into a new era of "low cost and high simulation".