Team Deakins LEDs - with Jeffrey Lee, Ph.D.
12 snips
Dec 10, 2025 In this engaging conversation, Jeffrey Lee, Ph.D., Chief Product Officer at Fiilex and expert in LED technology, shares his fascinating journey from physics to film lighting. He explains how color is created in LED fixtures using semiconductor materials and phosphors, and the challenges of spectral spikes in color output. The discussion covers the evolution of LED technology, practical on-set implications of aging lights, and the engineering hurdles of making compact, powerful LEDs. Jeffrey even teases future innovations, like larger tiled LED sources and potential laser technologies.
AI Snips
Chapters
Transcript
Episode notes
Color Is Engineered, Not Just Heated
- LED color comes from engineered semiconductor materials and phosphors rather than filament temperature.
- Manufacturers fine-tune chemical 'recipes' to produce different shades and white via phosphor conversion or color mixing.
Same CCT, Different Spectra
- Different LED manufacturers use varying chip 'recipes', so two fixtures with the same CCT can still differ spectrally.
- That spectral difference causes mismatches between lights and cameras unless calibrated.
Test And Replace Aging LEDs
- Check lights and expect spectral and intensity shifts as LEDs age; they do degrade chemically and mechanically.
- Meter or measure critical fixtures and replace engines or fixtures when consistent color fidelity matters.