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 Laser Pointers Cylindrical Plano-Convex vs Rod Lens for Laser Line Generation?

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04-17-2015, 04:17 AM #17
 Class 3B Laser Join Date: Aug 2013 Location: MI, US Posts: 2,655 Rep Power: 6069
The Lightning Stalker
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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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04-17-2015, 05:50 AM #18
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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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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.

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

High Current Pulse Drivers: https://tinyurl.com/ya7whuk3

04-17-2015, 06:03 AM #19
 Class 3B Laser Join Date: Aug 2013 Location: MI, US Posts: 2,655 Rep Power: 6069
The Lightning Stalker
Class 3B Laser

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Posts: 2,655
Rep Power: 6069
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?
__________________
ALL NEW MEMBERS MUST READ THIS!!! --> http://www.laserpointersafety.com

"Where, now, is the way by which the light distributes itself" - Job 38:24

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