Spectacle Lens Coating via Laser Masking

The patent replaces mechanical printing plates and self-adhesive masks with a laser-based direct writing system. The laser beam is modulated according to the desired reflection image pattern and directly writes onto the lens surface, eliminating the need for physical contact with printing plates or masks. This substitution of mechanical systems with optical fields resolves the contradiction by maintaining manufacturing precision through laser control while eliminating the high costs and mechanical damage risks associated with traditional methods.

The patent extracts and removes the printing plate from the production system entirely. Instead of using a physical printing plate that requires storage, handling, and mounting on production lines, the reflection image pattern is stored as digital data and directly transferred to the lens surface via laser writing. This extraction of the printing plate eliminates the associated device complexity and setup requirements while maintaining reflection image precision through digital control of the laser beam.

The patent replaces the mechanical masking process with a laser-based direct writing process. Instead of applying physical self-adhesive masks that require manual handling and adhesion to the lens surface, the reflection image pattern is directly written onto the lens surface using a controlled laser beam. This substitution eliminates mechanical contact and loading on the lens surface, preserving mechanical durability while maintaining ease of operation through automated laser writing.