Irradiance Measurement With Spectrometers
Irradiance is the flux per unit area striking a surface. Relative irradiance determines whether there’s more power at one wavelength than another, but not by how much. To calculate those values requires a spectrometer calibrated against a lamp of known spectral power output.
Use Ocean Optics Spectrometers for Irradiance Applications
Advantages
- Flexible – able to calculate different power parameters
- Quantitative – more accurate than the human eye for even the simplest comparison of light intensity
- Versatile – multiple measurement configurations possible
Applications
- Laser/LED characterization
- Lighting measurements
- Solar irradiance measurements
- Upwelling/downwelling measurements
- UV disinfection lamp monitoring
Irradiance Measurement Setup
Here’s an example irradiance system with an integrating sphere for sampling. To complete the system, you’ll need the spectrometer, a radiometrically calibrated light source for absolute irradiance, and optical fibers.
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