Hi everybody, i ve been thinking in a very low cost PIV system for analyzing the hydrodynamic of flocs particles in cloudy water. I bought: dsrl camera @60 fps 1080p( to record the sludge) , a macro lens 1:1 ,a 200mw green module diode laser(i chose the potency from suggestions from other users )and an acrylic transparent tube of 8 inchs of diameter and 10feet of height.
The piv 's trial demands a vertical laser sheet to illuminate the flocs. The laser has nt arrived yet, but i believe it has a 1mm of laser s diameter. The cameras sensor s height is 15mm , there i should buy some system s lens to magnify the diameter of laser light. The expander beam i thinl could be a great option but the camera will capture many particles in the horizontal plane and the analysis will fail. Other posibility is to use a powell lens of 10° aperture to get the a laser sheet of 15mm of height.
My quests are:
How much power will be reduce due the lense? (1/15 x nominal power)?
And, the planar width will keep the width with the lense?
The piv 's trial demands a vertical laser sheet to illuminate the flocs. The laser has nt arrived yet, but i believe it has a 1mm of laser s diameter. The cameras sensor s height is 15mm , there i should buy some system s lens to magnify the diameter of laser light. The expander beam i thinl could be a great option but the camera will capture many particles in the horizontal plane and the analysis will fail. Other posibility is to use a powell lens of 10° aperture to get the a laser sheet of 15mm of height.
My quests are:
How much power will be reduce due the lense? (1/15 x nominal power)?
And, the planar width will keep the width with the lense?