Consultancy Services
Customized optical thinfilm coating solutions
Pravii Tech specializes in both consulting and design for optical thin film coatings, offering expertise in custom solutions for architectural facades, solar control systems, and advanced display devices. We excel in developing low-emissivity (low-E) and solar coatings, optimized for energy efficiency and precision performance. Our consultancy services are tailored to meet the unique requirements of each project, combining technical innovation with industry-leading expertise. At Pravii Tech, we deliver high-quality solutions that drive excellence in both strategic and commercial applications
General Designs in coatings
Conventional desings
In conventional optical coating designs, the refractive index of the materials used for the high and low index layers alternates periodically throughout the entire thickness of the coating stack. This structured variation is precisely engineered to achieve optimal optical performance for a specific central wavelength.
Example:
In a quarter-wave stack design, the optical thickness of each layer is a quarter of the central wavelength, resulting in destructive interference at specific wavelengths and producing highly efficient reflective or anti-reflective coatings. The high-index layers and low-index layers alternate, allowing the stack to manage light transmission, reflection, or absorption in a highly controlled manner.
This alternating structure ensures that the coating operates efficiently at the designed wavelength, making it suitable for applications such as architectural glass, laser optics, and display technology.
Inhomogeneous designs
Our thickness-modulated inhomogeneous optical coatings vary layer thickness while maintaining a constant refractive index, providing precise control over light transmission and reflection.
Constant Refractive Index: Ensures consistent material properties.
Variable Layer Thickness: Allows for customized optical effects.
Broad Applications: Perfect for broadband filters, anti-reflective coatings, and reflective solutions in architecture, lasers, and advanced optics.Benefits:
Fine-tuned optical performanceOptimized for specific wavelengths
Ideal for high-performance applications
Rugate/Graded Index Designs
Rugate coatings feature a gradual variation in refractive index, creating a smooth transition throughout the layer thickness. This design optimizes interference effects for superior optical performance.
Key Features:
Gradual Refractive Index Change: Provides enhanced control over reflection and transmission.
Customizable Optical Properties: Tailored for specific applications and performance requirements.
Versatile Applications: Suitable for narrowband filters, anti-reflective coatings, and laser optics.
Benefits:
Improved spectral performanceReduced unwanted reflections
Ideal for high-precision optical systems
Advanced Coatings for Architectural Facade Glass
Pravii Tech specializes in tinted glass coatings, sun control/solar control coatings, and Low-E coatings (single, double, triple) for architectural facades. These coatings are designed to manage infrared (IR) heat and improve energy efficiency, optimizing factors such as Solar Heat Gain Coefficient (SHGC), Shading Coefficient, U-Value, Emissivity, and Selectivity to reduce heat transfer and enhance glass performance for sustainable building designs.
Key Features:
Tinted & Sun Control Coatings: Reduce solar heat gain while maintaining aesthetic appeal and natural light.
Low-E Coatings (Single, Double, Triple): Provide advanced thermal insulation and energy efficiency.
Custom Glass Codes & Shades: Tailored to specific project requirements for precise performance.
Simulation & Design Expertise:
Pravii Tech’s team conducts all simulations and energy performance calculations using advanced, customized software developed in-house. Our expert-driven approach ensures optimal glass designs that meet specific project goals for energy efficiency and sustainability.
Benefits:
Increased energy savings through optimized thermal and solar properties
Full customization of glass coatings and energy performance simulations by Pravii Tech
Trust Pravii Tech to deliver high-performance, energy-efficient coating solutions, designed with cutting-edge software and expert analysis.
