HIGH LUMEN DENSITY TECHNOLOGY
BY YUJI LED
MORE THAN JUST SMALL
WHY SMALL LIGHT EMITTING SURFACE (LES)?
- Smaller LES helps save cost on secondary optics design and accessory manufacturing.
- Smaller LES means smaller size of the fixture, less BOM cost, higher mobility and higher portability.
High Lumen Density COB CRI Values (95 CRI)
With reliable phosphor properties, appropriate mixing ratio and the unique packaging process technology, this COB has a CRI (Ra) as high as 95 even at a CCT of 5600 K.
The 19 mm LES COB has a luminous flux of 24000 lm at 5600 K, which is a luminous flux density of 84 lm/mm2. That is 55 lm/mm2 higher than the average on the market.
Small color shift
HOW IS HIGH RELIABILITY POSSIBLE?
- The flip-chip structure of the COB transfers the heat directly to the substrate, so the efficiency can be largely increased.
- The AlN substrate of the COB has a heat transfer efficiency as high as about 300 W/(m-K), 2 times that of Al substrate, and 6 times that of Al2O3 substrate.