Welcome to Laser Pointer Forums! If you are looking for a laser you may want to check out the Laser Company Top Sites List. The link will open in a new window for your convenience.

Colorful 2018, Colorful Laser Power Meter
 Laser Pointers Knife edge followed by expander? Anyone try that here?

LPF Laser Pointer Company Database (link opens new window)

08-20-2015, 09:20 AM #33
 Super Moderator Join Date: Jan 2014 Location: Great White Frozen North Posts: 9,234 Rep Power: 1112787
Super Moderator

Join Date: Jan 2014
Location: Great White Frozen North
Posts: 9,234
Rep Power: 1112787
Re: Knife edge followed by expander? Anyone try that here?

Just want a low divergence spotlight, the lower the divergence and the higher the power the better. I had not seen that video before and I've thought about doing the same thing myself, but I don't think I'd be using it where I could accidentally flash someone with it like he did when it went too low!

Edit: Can someone please help me understand those staggered diode positions in the photo of that block?

http://box349.listingfactoryhost.net...206b_large.jpg

__________________

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

Last edited by Alaskan; 08-20-2015 at 09:41 AM.

08-20-2015, 01:07 PM #34
 Class 1M Laser Join Date: Dec 2011 Posts: 106 Rep Power: 41254
logsquared
Class 1M Laser

Join Date: Dec 2011
Posts: 106
Rep Power: 41254
Re: Knife edge followed by expander? Anyone try that here?

Quote:
 Edit: Can someone please help me understand those staggered diode positions in the photo of that block?
It allows you to knife and stack 4 beams like this-
||
||

The height spacing is critical and depends on the diode and lens used.

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

All times are GMT. The time now is 04:22 AM.

 -- DarkShadows V5 -- Responsive LPF -2562016 -- Default Style Contact Us - Laser Pointers - Archive - Top