A brief introduction about the history and development of CREE XLamp XP-G LEDs

In the year 2006, the first lighting-class CREE  XLamp XR-E were available on the market.In 2009, the original Cree XLamp XP-G LEDs were launched for its famous eye-catching performance. Achieving up to 400lumens of light output at 1A current levels and over 130Iumens/W at only 350mA, these LED chips were up to 43% brighter and 53% more efficient than Xlamp XR-E LEDs.

Several years later, the XLamp XP-G2 LEDs were on the market with the lumen output that could be supported up to 20%. When the XLamp XP-G3 LEDs came out in 2016, a further 31% lumen output improvement was made, along with an 8% higher lumen/W figure. Now, the XLamp XP-G4 LED chips can deliver 75% more lumens than their XP-G2 counterparts and have an even lower thermal resistance of 1.3°C/W. These XP-G4 LEDs have been widely used in outdoor lighting, portable lighting, indoor lighting and solar-powered lighting implementations. Besides their continued lighting performance improvement,  original XP-G, XP-G2 and XP-G3 users who still adopt XP-G4 LEDs can make seamless ugrading easily and shorten the design cycles.

Owing to utilization of the latest raw materials, packaging and chip technologies, the XLamp XP-G4 LED that has smaller light emitting surface(LES) can achive 69% higher intensity than previous generations can create tighter beam angles and much higher candela values. These latest XLamp XP-G4 LEDs has a highly optimised optical profile that has been designed to accentuate on axis light output nad provide great improvements in terms of  a 41% increase in maximum light output compared to XP-G3 devices, reaching up to 1,130lumens.

Use of the state-of-the-art LED technology results in better directing of the emitted light into a narrower, more uniform cone so as to achieve a view angle full width half maximum (FWHM) of 120° in daylight white. For this reason, the XLamp XP-G4 LEDs are much suitable for directional lighting deployments – such as LED spotlights, premium torch and sports stadium lighting.

The new XP-G generation is available in CCTs ranging from 1800K to 6500K and optional CRI of 70, 80 and 90. Besies the directional lighting applicaitons mentioned , other installations are seen for architectural, entertainment and horticultural lighting.

The ongoing technical developments on XLamp XP-G LEDs will help LED lights designers make significant improvements on their legacy designs or make their further design concepts even further while the same technology footprint can be kept on the way.