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)