EssentOptics PHOTON RT 7514 LWIR Spectrophotometer
The EssentOptics PHOTON RT 7514 spectrophotometer is a purpose-built instrument specifically designed to effectively address these challenges. It measures the transmission and reflection of coatings for the LWIR spectral range. An unsurpassed feature of the PHOTON RT 7514 is its ability to perform automatic measurements at variable angles of incidence (up to 60°) with polarised light. To support these demanding tests, a built-in feature accurately compensates for beam displacement at high angles, ensuring S- and P-polarisation measurements are delivered in just a few minutes. A record maximum sample thickness of 40 mm is supported.
Accurate and reliable infrared spectral measurements of optical coatings present one of the most critical challenges today. Optical manufacturers worldwide are specifying increasingly sophisticated IR coatings for their planar optics, aiming for improved long-distance object detection and identification. Often, production capabilities for obtaining these optical coatings outpace existing metrological capabilities for certifying their quality.
KEY ADVANTAGES:
- Dispersive Spectrophotometer
- High-accuracy measurements at normal and variable Angles of Incidence (AOI)
- Built-in high-contrast polariser
- Extremely low noise measurements
- Fully automatic operation
- Optimised Signal-to-Noise Ratio
| PARAMETER | DESCRIPTION |
| MODEL | 7514 |
| OPTICAL CONFIGURATION | |
| Photometric functions | %T, %R |
| Effective wavelength range, µm | 7.5 - 14.0 |
| Built-in polarizers, µm | 7.5 - 14.0 |
| Optical scheme of monochromator | Czerny-Turner |
| Optics | Mirror: Au, Lenses: ZnSe + AR |
| Measurement of Transmission | Variable angle measurements: 0 - 60 deg angles of incidence |
| Measurement of Reflection | Interchangeable sample stages with fixed angles of incidence: 10, 30, 45 and 60 deg Reference sample: gold mirror |
| Turning pitch angle of sample stage, deg | 0.01 |
EssentOptics Photon RT 7514 Spectrophotometer datasheet 
