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01-31-2015, 05:09 AM #1
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,231 Rep Power: 2059
Class 3B Laser

Join Date: Jan 2014
Location: Deployed to Iraq
Posts: 4,231
Rep Power: 2059
Can someone please PM me which projectors have 520nm diodes in them?

Can someone please PM me which projectors have 520nm diodes in them?

__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

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

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

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01-31-2015, 05:13 AM #2
 Class 4 Laser Join Date: Dec 2010 Posts: 8,488 Rep Power: 687
rhd
Class 4 Laser

Join Date: Dec 2010
Posts: 8,488
Rep Power: 687
Re: Can someone please PM me which projectors have 520nm diodes in them?

Quote:
 Originally Posted by Alaskan Can someone please PM me which projectors have 520nm diodes in them?
Huh?

Since when do projectors have 520nm diodes in them? Did I miss something?
__________________
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SAFETY & IMPORTANT READING (threads authored and contributed to by various members of LPF):
- Info release from Laserglow - Default Canadian restrictions on portable lasers (link)
- The Necessity of Safety Goggles (link)

01-31-2015, 05:49 AM #3
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,231 Rep Power: 2059
Class 3B Laser

Join Date: Jan 2014
Location: Deployed to Iraq
Posts: 4,231
Rep Power: 2059
Re: Can someone please PM me which projectors have 520nm diodes in them?

My bad, I thought these high power 520nm laser diodes were being built for projectors, what is the market for them, other than a few hobbyists?
__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

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

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

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