Old 05-13-2009, 11:01 PM #1
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,319
Rep Power: 205210
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,319
Rep Power: 205210
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Exclamation Looking for a lens...

Hello...
First of all, My understanding of optics is limited. I am in need of assistance.

I need a lens.
For collimating a multimode laser diode with FAC.
Spec sheet says divergence is 3/8 degrees?? Whatever that means...

AR coated for 808+/-nm would be nice, but anything with at least 85% transmission for this wavelength would be fine.
I think an aspheric lens would work. ???
The lens will sit about 5mm above the surface of the emitter and I'm looking for a beam waist at about 1 meter if possible. Less is fine as long as it isn't less than 15-20cm.

If anyone could help me determine focal length and any other information for finding a suitable lens it would be very much appreciated.

How much would Edmund Optics charge for a custom lens? Do they even make "special orders?"

Also... What kind of transmission percentage can I expect from one of Jayrob's Meredith and 405-G-1 Aixiz lens mods at 808nm?
And the same for LarryDFW's lens.

[Sorry for the disorganized post... I haven't eaten yet today]


Thanks!

And if my requests are too specific or impossible without lots of $$$ I'll settle for whatever options work well enough! I need to find food.



Last edited by RA_pierce; 05-13-2009 at 11:04 PM. Reason: adding stuff
RA_pierce is online now   Reply With Quote


















Old 05-15-2009, 12:12 AM #2
LarryDFW's Avatar
Class 3R Laser
 
Join Date: Dec 2008
Location: Dallas, TX
Posts: 1,577
Rep Power: 5339
LarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond repute
LarryDFW LarryDFW is offline
Class 3R Laser
LarryDFW's Avatar
 
Join Date: Dec 2008
Location: Dallas, TX
Posts: 1,577
Rep Power: 5339
LarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond repute
Default

RA;

Since you have the fast axis correction lens mounted...
how large is the beam's largest axis after that lens ?

Most likely you will need a larger lens to collimate the larger beam at the F.L of the new lens .

The Hi-Power lens is ~1/4" in diameter.

I have several 25mm plano-convex Minolta lenses with a short F.L., which has worked on some 808nm bar diodes.

It is designed to work @ 700nm, so pass band should be OK.

LarryDFW
__________________
UV LED Lights F/S, 445nm, Blu-Rays, Red 1/2W, Green Focusables,
Link- Blu-Ray/445 Diode Test Current Levels for Long Life

Last edited by LarryDFW; 06-15-2009 at 01:01 AM.
LarryDFW is offline   Reply With Quote
Reply





Thread Tools
Display Modes

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 08:02 PM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC