Delta Optical Thin Film A/S experts in developing precision optical dielectric filters — including bandpass, edge, blocking, beam splitters, and continuously variable filters — tailored to exact specifications for demanding applications. With decades of experience, proprietary design and deposition control software, and advanced in‑house production technologies, Delta delivers reliable, high‑quality optical filter solutions that improve performance and meet volume production needs. The company’s focus on innovation and close collaboration with clients helps ensure competitive pricing, rapid prototyping, and scalable manufacturing.
Why Choose Delta Optical Thin Film?
- Proven expertise in high-quality optical dielectric filters for mass-volume OEM production.
- Customizable solutions using proprietary filter design software for advanced, manufacturable optical filters.
- In-house developed control software for deposition and tooling, enabling precise and repeatable production.
- Unique access to coating chamber internal controls, combined with world-class equipment, ensures unmatched filter quality.
- Advanced production capabilities, including hard-coated single-substrate filters, linear variable filters, multi-bandpass, and notch filters.
- Performance simulation before production accounts for manufacturing tolerances, ensuring reliable results.
- Decades of experience in optical coating technology applied to cutting-edge, economical filter manufacturing.

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