Team Deakins LEDs - with Jeffrey Lee, Ph.D.
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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.
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Laser Illumination For Worm Neuroscience
- Jeffrey Lee described using lasers to illuminate tiny worms for neural studies under microscopes.
- He explained those experiments required very directional, low-power light and informed his interest in light's physical properties.
Blue LEDs Enabled White-Light Evolution
- LED technology matured from tiny indicator chips into general illumination once blue LEDs were developed.
- The blue LED breakthrough unlocked white-light LEDs and broader visible-spectrum applications.
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.