Brightness Light Distribution Characteristics Measurement System

The C9920-11 Brightness Light Distribution Characteristics Measurement System is a system that measures the emission brightness, spectrum and the emission angle distribution for light emitting device by electro-luminescence (EL) method.
The light emitting device is set in the sample holder and made to emit light by voltage/current supplied by a power source meter. The light emitted from the device is measured with a detector after passing through a dedicated condensing lens and a fiber. Since the detector employs a spectrometer and multi-channel back side incidence, cooled CCD, the spectrum can be measured instantaneously with high precision.

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Product Information

FEATURES
･  Brightness,  emission  spectrum  and  color  coordinates  can  be  measured  for  each  emission  angle
･  The  power  source  meter  (KEITHLEY  2400)  can  be  controlled  on  the  software
･  The  spectrum  can  be  measured  instantly  with  Hamamatsu  multi-channel  detector  for  the  angle  that  has  been  set  and  each  step  of  the  applied  current  (voltage)
･  Using  a  high-performance  BT(back  thinned)  cooled  CCD,  the  system  has  ultra-high  sensitivity  are  possible
･  Settings,  measurements  and  display  of  results  are  simplified  by  the  dedicated  software
･  On  the  software,  it  is  possible  to  display  various  types  of  graphs,  such  as  current/current  density/voltage-spectrum,  current/current  density/luminous  efficiency  or  current/current  density/voltage-color  coordinates.
･  The  system  can  be  easily  extended  to  absolute  PL  quantum  yield  measurement  and  external  quantum  efficiency  measurement  systems  with  additional  parts

SPECIFICATIONS
･  Rotating  stage  :  minimum  angle  setting  1  degree
･  Angle  setting  range  :  0  degree  to  80  degrees  ,  -80  degrees  to  80  degrees 
･  Minimum  step  setting  :  1  degree
･  Resolution  :  0.1  degrees  or  less
･  Detector  :  BT(back  thinned)  cooled  CCD
･  Cooling  temperature  :  -15  degrees
･  No.  of  photosensitive  device  channels  :  1024  ch
･  Wavelength  measurement  range  :  380  nm  to  780  nm  (detector:  200  nm  to  950  nm)
･  Fiber  :  1.5  m
･  Measurement  spot  size  :  200  um
･  Range  for  brightness  measurements  :  10  cd/m2  to  10  000  cd/m2