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SFR High& Low Temperature Operating Test (Simulation (Material for…
SFR High& Low
Temperature
Operating Test
Simulation
Material for Coefficient of linear expansion
Holder
-40~ +85℃: 23.3
Sensor Die
-40~ +85℃: 2
Glue
-40℃: 38
+85℃: 66.7
Sensor PCB
-40~ +85℃: 1.2
Lens
Solder
-40~ +85℃: 22
Focus Shift base on flange
EFL Total= Lens glass shift+Barrel flange shift-Glue-Holder
+Sensor Die+ Sensor PCB+ Solder
CTE= Height x Temperature difference x
Coefficient of linear expansion
Experiment
Through focus
Temperature of +25℃ for SFR
Temperature of +85℃ for SFR drop 85-25℃
Temperature of -40℃ for SFR drop 25-(-40)℃
Equipment
Light Box+Relay lens
Thermal Stream Machine
Light Panel