Lumileds Luxeon 3535L Lime

• Digikey 1416-1440-1-ND
• 184lm/W
• optimum efficiency from 1mA to 30mA (didn't measure higher current because of lack of heatsink). 
• Best efficiency at 5mA.  It's then 8% better than at 1mA or 30mA.  This has been measured with a TSL2591 connected to a Protrinket 3V and the LED mounted about 10mm directly above it.  A current source controls the LED current, while a DMM is used to measure the LED voltage.  A more decent setup can be found here.

Osram Oslon Signal Verde

• Digikey 475-3450-1-ND
• used in #TritiLED
• 61lm/W to 130lm/W depending on packing unit

Cree XLamp XP-E2 Green

• Digikey XPEBGR-L1-0000-00F02CT-ND
• used in #TritiLED 
• 113lm/W