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현재 위치

  1. LED Light Test System

상품상세정보

Integrating Sphere System


                                 



                                            



  LMS is designed to characterize opto-electrical property of light sources at various driving condition and operation temperature with fully automated control program.  It consists of integrating sphere, Spectrometer, power supply, temperature control unit and auxiliary / standard lamp.              


▣ Types of Integrating Sphere


                 

                             LMS-120                    LMS-200                LMS-400                       LMS-800


▣ Ambient Temperature Controller


 

 


  TC 850 controls ambient temperature inside sphere with Air Circulation Heating Coil Module. It can accomplish temperature from 20oC ~ 85oC with + 0.2oC accuracy.  It consists of temperature control unit and monitoring unit


    

 



   Auto sequence measurement can be set for aging, idle and on/off time along with input voltagte and current setting for temperature dependance of LIV curve.



▣ Operation Program


            


▣ Spectrometer Selection Chart


             

                   주1. Measured with collimating lens mounted with 600um fiber input

                   주2. Unit: W/m^2nm


▣ Opto-elecrtical property vs. operation Temp.


   LED itself and lighting shows a huge variation as ambient temperature changes therefore it is necessary to define its performance at R&D stage. In general, high power LED shows spectrum shift from 0.1 to 0.3nm/K and luminous flux drop around B(-0.05%/oC) => W(-0.3%/oC) => G(-0.35%/oC) => R(-0.83%/oC) => A(-1.05%/oC).


        

 Luminous Flux vs. Ambient Temperature


  

 

 Spectral Distribution Change


 Lumen per CW and PWM

 

 

Color Coordinate Shift


 Peak Wavelengh Shift

 

 

 Luminous Efficacy Change


 Forward Voltage Change

 

 

 Vf, Board Temp. at 65


 Lumen per frequency at 60% duty




3D sensing module(ToF VCSEL) Beam Profile / LIV / Defect / Spectral Wavelengh Instrument