In order to design systems that utilize high power LEDs, the light output characteristics (color and flux) must be known as a function of temperature and electrical input characteristics. Orb Optronix’ ETO LED Characterization Service provides complete Electrical-Thermal-Optical data over your choice of input electrical and thermal conditions.
Users of this service then can make fundamental design decisions regarding LED selection, thermal management, luminous efficacy, and more.
High power LED manufacturers are currently specifying optical output of their LEDs under short single current pulse conditions. Today’s high power LED specification sheets generally assume that the junction temperature is equal to the ambient air temperature of 25C. Although these tests are easily repeatable, they are not particularly useful to engineers designing LEDs into illumination and display products. The decrease of luminous flux and shift in wavelength as temperature rises is highly variable and depends on the properties of LEDs. NIST’s Optical Technology Division (OTD) is conducting research to address this important issue and recommends LED characterization be performed under TEC Control. This information is necessary when designing robust LED-based products with specific desired light output and lifetime characteristics.
LED integrators can now accurately and completely characterize LEDs using Orb’s services to solve these complex product development challenges.