Custom Etalons for Medical Imaging Excellence
Pushing the limits of hyperspectral imaging fidelity with 40th-wave precision
Why Flatness Matters in Medical Imaging
Hyperspectral imaging in medical applications, whether for oncology diagnostics, dermatological imaging, or tissue oxygenation mapping, depends on absolute precision in the optical path. Even minute deviations in etalon flatness introduce phase errors that degrade contrast, distort spectral resolution, and reduce diagnostic accuracy.
Conventional etalons: Often limited to λ/10–λ/20 flatness, introducing wavefront errors that blur fine spatial detail and reduce the sharpness of spectral features.
Lunt Optics custom etalons: Achieve λ/30 (40th wave) flatness across the full 75 mm clear aperture, virtually eliminating phase distortion and preserving the full resolving power of the imaging system.
The result is cleaner, sharper, higher-contrast images, even at the narrowest bandwidths, allowing clinicians and researchers to see more, measure more, and diagnose earlier.
Performance Advantages Over Standard Market Etalons
1. Enhanced Spectral Resolution
Our high-flatness substrates maintain an exceptionally uniform cavity spacing, reducing finesse loss and enabling more precise wavelength discrimination across the imaging field.
2. Higher Signal-to-Noise Ratio
By minimizing scatter and wavefront distortion, our etalons allow detectors to capture more usable signal and less optical noise, critical in low-light or real-time imaging applications.
3. Expanded Field of View
Unlike smaller-aperture etalons, our 75 mm models allow larger sensor formats to operate without vignetting, maximizing usable imaging area.
4. Superior Coating Quality
We use ultra-uniform dielectric coatings to ensure consistent reflectivity across the aperture, which maintains calibration stability and wavelength fidelity over time.
Applications in Medical Imaging
- Hyperspectral endoscopy – Detect subtle tissue changes invisible to the human eye.
- Dermatological imaging – Map oxygenation and pigmentation at high precision.
- Retinal diagnostics – Achieve diffraction-limited imaging with precise spectral isolation.
- Oncology imaging – Identify early-stage tumor boundaries using narrow-band spectral signatures.
- Non-invasive blood analysis – Enhance contrast for spectral absorption features in hemoglobin and other biomarkers.
Why Lunt Optics?
Precision manufacturing in-house – From substrate generation to final coating, we control every step for repeatable, verifiable results.
Proven experience – Decades of expertise in producing etalons for astronomy, research, and defense applications—now applied to medical imaging.
Custom engineering – We can tailor cavity spacing, aperture size, coatings, and mounting to integrate seamlessly into your imaging platform.
Bring your hyperspectral imaging system into a new era of precision.
Contact us today to discuss your project and discover how our 40th-wave custom etalons can deliver the clarity and fidelity your application demands.