Cree LED XLamp® XP-LR & XP-GR LEDs Optical Analysis

With the launch of XLamp® XP-LR & XP-GR LEDs, Cree LED has further enriched its portable lighting series.

 

These two products are designed for lighting applications that require high precision and excellent light efficiency. XP-LR & XP-GR use a round cup light-emitting surface, which can provide more uniform and concentrated light output compared to the traditional square cup light-emitting surface; the beam is more symmetrical and the cut-off line is clearer, which is suitable for the application scenario of "high-precision beam control" and meets the needs of headlights, bicycle lights and high-end flashlight users.

 

                  

 

 

Portable lighting Optical analysis brief

• With the launch of XLamp® XP-LR and XP-GR LEDs, Cree LED has further enriched its portable lighting series.
• The round cup light-emitting surface makes the beam more uniform and brighter.
• The round cup light-emitting surface further highlights its advantages when matching the following common secondary optical systems:

    (1) Reflector cup & flat surface combination
    (2) Aspheric focusing lens with zoom function

 

XLamp® XP-LR & XP-GR LEDs Optical characteristics at a glance

 

Example 1 of flashlight application modification: Reflector cup solution

 

Comparison test was conducted by replacing LEDs with flashlights sold normally in the market

Reflector cup + flat lens design

4 modes: 

     (1) Flash

    (2) High brightness

    (3) Medium brightness

    (4) Low brightness

Battery details:

   (1) Battery specification: 21700

   (2) Voltage: 3.6V

   (3) Battery capacity: 5000 mAh

   (4) Maximum drive current: 8A

   (5) Drive design: constant current

 

 

 

 

In the reflector cup solution, compared with the spherical package XP-G4 Standard and XP-L2 LEDs, the LED flashlights using XP-GR and XP-LR present a narrower light-emitting angle and a clearer cutoff line, and the beam control performance is better.

Light spot comparison chart *Light output is compared under 300lm conditions

 

In the reflector cup solution, compared with the spherical package XP-G4 Standard and XP-L2 LEDs, the LED flashlights using XP-GR and XP-LR have a narrower light angle and higher brightness.

Spatial brightness distribution diagram (irradiation distance @ 1.375m)

 

Example 2 of flashlight modification: focusing lens solution
 

Comparison test using flashlights normally sold in the market to replace LEDs
Aspherical focusing lens with zoom function
4 modes
    (1) High brightness
    (2) Medium brightness
    (3) Low brightness
    (4) Flash
Battery details
    (1) Battery specification: 18650 (2 cells in series)
    (2) Voltage: 7.2V
    (3) Battery capacity: 2000 mAh
    (4) Drive design: constant current

 

 

In the condenser lens solution, compared with spherical package LEDs (XP-G4, XP-L2) and flat package LEDs (XPG4-HI), LED flashlights using XP-GR and XP-LR present a narrower light angle and a clearer cutoff line, and the beam control performance is also better.

About Gainer LED:

Gainer LED was established in 2012. The company focuses on providing advanced technology solutions for medium and high power general lighting, special lighting and high-end display fields. Its products are widely used in commercial lighting, industrial lighting, smart buildings and professional display screens. Relying on a global marketing network and professional technical service system, Gainer LED continues to provide global customers with high-performance lighting products that meet international standards and fully meet the diverse needs of the market.

 

For more customer service needs, please contact us:

• Phone: +8615818679054
• Tel : +86-755-27835429
• Email: info@gainer-led.com