Old 04-17-2015, 04:17 AM #17
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Default Re: Cylindrical Plano-Convex vs Rod Lens for Laser Line Generation?

This sounds to me like a shortcoming of
this particular lens or type of lens or
something to that effect. What happens if
you have collimation optics and a beam
expander upstream of the cylinder/rod lens?


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Old 04-17-2015, 05:50 AM #18
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Default Re: Cylindrical Plano-Convex vs Rod Lens for Laser Line Generation?

I should be getting a 8 X 2 inch 87mm FL cylinder lens this coming weekend and see what happens with that lens, maybe there is a way to do this by expanding the line after the lens.
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Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

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Old 04-17-2015, 06:03 AM #19
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Default Re: Cylindrical Plano-Convex vs Rod Lens for Laser Line Generation?

Maybe. Is the line really really super thin
after it comes out of the cilynder?
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