Blue-X-Focus — LED light source

The new LED light source with 80W up to 120Hz and 1μs flash period

The Blue-X-Focus is a powerful LED light source, especially designed by isi-sys for digital image correlation:

  • The short, sin­gle wave length (blue) impro­ves the opti­cal trans­fer func­tion pro­per­ties espe­cial­ly a) at the image boar­ders for con­ven­tio­nal len­ses and b) for high reso­lu­ti­on, small FOV set-ups such as the Micro 3D ste­reo sensor.
  • The pul­se mode redu­ces moti­on blur and maxi­mi­zes light power at lowest pos­si­ble hea­ting of the object surface
  • Lar­ge beam expan­si­on ran­ge from 3,2° to 60° for small to lar­ge field of view. Ope­ra­ti­on through small windows
  • A pola­riz­a­ti­on-fil­ter (optio­nal) is sup­pres­sing direct reflec­tions in com­bi­na­ti­on with a second pair for the sensors
  • The short wav­elength can be used in com­bi­na­ti­on with band­pass fil­ters for mea­su­ring on hot samples

Further details:

  • Power: Stan­dard ope­ra­ti­on with 80W in con­ti­nuous mode or 120W for pul­se mode depen­ding on duty cycle. Examp­le for 0,7 duty cycle: 105W @ 240Hz and 2,9ms flash peri­od. Power adjus­ta­ble manu­al­ly or exter­nal by pul­se length and fre­quen­cy as well as auto­ma­ti­cal­ly limi­ted depen­ding on temperature.
  • The focu­sing adap­ter for stan­dard DIC is from 5° to 60° expan­si­on. The ver­si­on for small FOV is adjus­ta­ble from 3,2° to 4,7° expan­si­on cor­re­spon­ding to e. g. 5mm x 3mm at 53mm WD or 300mm x 140mm at 1800mm WD (working distance)
  • Moun­ting is pos­si­ble hori­zon­tal or ver­ti­cal via M6 or ¼” threads
  • The coo­ling air stream is direc­ted from the front inlet to the backside to avoid hot air waves in the images.Power: Stan­dard ope­ra­ti­on with 80W in con­ti­nuous mode or 120W for pul­se mode depen­ding on duty cycle. Examp­le for 0,7 duty cycle: 105W @ 240Hz and 2,9ms flash period.

Application example for DIC on small FOV (magnification 1:1 approx. 14x10mm @ 12Mpx, Rodagon 135mm)