High-Precision Custom Optical Filters at Scale
We are the optical filter company
Since the 1970s, Delta Optical Thin Film has specialized in designing and manufacturing Custom Optical Filters tailored to exact customer specifications. Our expertise in thin-film coating technology enables us to deliver high-performance optical filters optimized for precision, durability, and large-scale production.
We offer a wide range of Custom Optical Filters, including Bandpass Filters, Edge and Blocking Filters, Dichroic Beamsplitters, and Linear Variable Filters, all engineered to meet specific optical and budgetary requirements. With our advanced design software and proprietary deposition control, we ensure a fast, efficient development process—from initial design to rapid prototyping and full-scale manufacturing.
Precision filters designed for high-performance applications
Our custom optical filters are meticulously designed to meet the specific needs of your high-performance applications. Using cutting-edge deposition techniques and advanced in-house control software, we ensure every filter delivers exceptional precision and reliability. Whether you’re aiming for enhanced clarity, durability, or optimized performance, our filters are engineered to elevate your project. Get in touch to see how we can assist your project.
Linear Variable Filters
Our Linear Variable Filters offer precise, tunable solutions where optical properties shift linearly across the filter, ideal for applications like fluorescence spectroscopy and hyperspectral imaging. Customizable and versatile, they provide exceptional performance across a broad spectral range.
Multi-Bandpass Filters for advanced applications
Our Multi-Bandpass Filters transmit multiple wavelength bands while blocking others, making them ideal for applications like fluorescence spectroscopy and microscopy. Fully customizable, they offer either homogeneous performance or variable filtering across one dimension. With decades of experience, Delta Optical Thin Film specializes in tailored solutions for wavelengths ranging from 300 nm to 1200 nm.
“I speak a hand-full of languages to varying extends – but proficiency in the "language of physics" is even more required in my communication with customers and suppliers around the world."
- Thomas Nørskov Stoustrup, Development Engineer
Get in touch
Have a look at our existing products or get in touch regarding your needs – we are the optical filter company.