PHOTON RT Family of Spectrophotometers for Flat Optics
Our PHOTON RT series provides absolute and angle-resolved measurements of spectral transmittance and reflectance across the full DUV–LWIR range, with optional capabilities for diffraction gratings, prisms and other complex components.
Each system is calibrated, stable and ready for daily use in both R&D and manufacturing environments — so that your results are not just accurate, but actionable.
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PHOTON RT (DUV-MWIR)
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The PHOTON RT family delivers absolute reflectance and transmittance measurements across an exceptionally wide spectral range — from DUV to MWIR. It supports angle-resolved and polarization-resolved testing of flat optics, prisms, beamsplitters, and diffraction gratings. Engineered for precision coating metrology, it combines research-grade accuracy with production-ready automation. |
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Covering the 7.5–14 µm LWIR band, the grating-based 7514 model extends PHOTON RT precision into the infrared. It measures transmission and reflection of coated flats and mirrors with variable angle and polarization control. A reliable platform for accurate metrology of application-critical IR coatings in research and production. |
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PHOTON RT 0420 Ultra |
For ultra-narrow bandpass filters, steep-edge coatings, or ultra-high optical density layers (up to OD 8), the 0420 Ultra stands apart. Its 0.06 nm resolution and ultra-low stray light reveal the true shape of every spectral detail. Built for those who push coating performance to the limits — from telecom to defense and space. |
Products essentoptics
NEW !!! Broadband Transmittance Measurement of Cutting-edge Coatings
PHOTON RT 0420 Ultra Spectrophotometer
Deliver ultimate performance in optical coating quality inspection, covering ultra-narrow bandpass filters, edge filters with steep slopes, notch filters, and high optical density coatings
Transmittance and Reflectance Measurement of Flat Optics with Variable Angle and Polarization Control
PHOTON RT Spectrophotometers
World's first and the ultimate UV-VIS-MWIR spectrophotometer, precisely engineered for optical coaters
Long-Wave Infrared (LWIR) Measurement for Plano Optics and Prisms
PHOTON RT 7514 Spectrophotometers
The instrument allows measuring the transmission and reflection of coatings designed for LWIR
UV-NIR Transmittance and Reflectance Measurement of Lenses and Multi-lens Assemblies
Linza 150 Spectrophotometers
The world's only spectrophotometer for characterizing coatings on lenses and lens assemblies
Mid-wave Infrared (MWIR) Spectral Measurements of Lenses and Multi-lens Assemblies
Linza 2752 Spectrophotometers
The Unique instrument for MWIR on-axis transmission measurement of lenses and lens assemblies