HC/AR Processes (Coerent/PBG)
Development and optimization of PVD coating processes for the optical sector
We develop and optimize PVD coating processes for ophthalmic and sunglass lenses, working alongside our clients to define customized solutions based on the required aesthetic, optical, and performance characteristics.
Our experience enables us to handle the entire process, from the initial development phase through to fine-tuning, consumption optimization, and validation of the treatment in production.
Anti-reflective processes
We create and develop anti-reflective processes designed to minimize residual reflections and enhance light transmission and the lens’s visual quality.
We can also work on existing anti-reflective processes, with the aim of improving their performance in terms of:
- surface hardness;
- abrasion resistance;
- hydrophobicity and ease of cleaning;
- reduction of residual reflections;
- uniformity and stability of the result;
- repeatability of the production process;
- reduction in the consumption of materials used.
Each process is developed taking into account the lens type, the materials used, the characteristics of the production system, and the client’s specific production requirements.
Mirror coating for sunglasses lenses
We develop mirror coatings for sun lenses, available in various colors, intensities, and reflection levels.
The process is designed to achieve a uniform, stable, and repeatable aesthetic result, while maintaining the required optical characteristics and ensuring proper adhesion of the coating to the substrate.
We can create mirror effects in various shades and finishes, tailoring the treatment to the lens type and the desired final result.
Coloring and sun protection via coating
We produce color coatings and solar filters through thin-film deposition, developed to control light transmission and achieve specific color tones.
These processes enable the production of lenses with specific aesthetic and functional characteristics by modifying:
- final lens color;
- light transmission level;
- uniformity of coloration;
- protection against ultraviolet radiation;
- repeatability of the result across different production cycles.
Process development and transfer
We carry out process fine-tuning and balancing activities across different systems located within the same laboratory.
The goal is to match production results as closely as possible, reducing differences between machines in terms of color, reflection, transmission, layer thickness, and treatment performance.
We analyze process parameters, plant operating conditions, and the characteristics of the materials used, adjusting recipes to improve uniformity and repeatability.
This activity makes production more flexible, allows the same process to be distributed across multiple facilities, and maintains consistent quality standards.
Consumption optimization
We optimize deposition processes with the aim of reducing material consumption while maintaining the same aesthetic, optical, and performance results.
By analyzing thicknesses, deposition sequences, and machine parameters, we can identify potential areas for improvement, thereby minimizing waste and increasing production efficiency without compromising the quality, stability, or repeatability of the treatment.
Reducing consumption makes it possible to lower production costs, extend the lifespan of materials, and make the process more efficient and sustainable.
Testing and validation of treatments
The developed processes can undergo specific tests to verify their quality, durability, and long-term reliability.
Among the main tests performed:
- UV transmission and protection test;
- Bayer test for evaluating abrasion resistance;
- boiling test to verify the adhesion and resistance of the treatment under thermal and humidity conditions;
- evaluation of surface hardness;
- control of hydrophobicity;
- analysis of residual reflexes;
- verification of chromatic and optical uniformity;
- monitoring of process stability and repeatability.
Thanks to the integration of development, optimization, consumption reduction, and performance verification, we are able to offer reliable, customized, and efficient PVD coating processes that are ready for industrial production.
