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Spectrometer
Lighting · Terms

Spectrometer

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Measurement device for analyzing light spectra from fixtures — displays Color Temperature, CRI values, and spectral distribution.

Definition

A spectrometer is a measuring instrument for analyzing the spectral composition of light. It precisely and quantifiably measures color temperature, spectral distribution, and light quality.

Practical Application

The measuring instrument is used in the following areas:

  • Color Matching: Matching different light sources to an identical color temperature
  • Quality Control: Measuring CRI values and spectral distribution of LED panels
  • Documentation: Logging light values for continuity purposes
  • Calibration: Setting luminaires to defined Kelvin values

Technical Details

Measurement parameters and specifications:

  • Color temperature range: 2000K to 20000K
  • CRI/TLCI measurement for light quality
  • Spectral resolution: 1-5 nm
  • USB or Bluetooth connectivity for data export

Practical Tips

  • Perform calibration before each shooting day
  • Maintain a constant measuring distance to the light source
  • Shield ambient light during measurements
  • Document measured values for later reference

Professional Standards

Spectrometers enable:

  • Reproducible lighting conditions over multiple shooting days
  • Objective evaluation of light quality according to broadcast standards
  • Precise matching of tungsten and LED light
  • Documentation for color grading and post-production
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