Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > 445nm Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 07-12-2010, 03:09 PM #33
CDBEAM777's Avatar
Class 2M Laser
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
CDBEAM777 CDBEAM777 is online now
Class 2M Laser
CDBEAM777's Avatar
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
Default Re: 445LD with Anamorphic Prisms on a Jayrob DIY

LF, Great...I am just a hobbyist....and now starting to understand some of the basics on optics....and I am sure any optics professional / engineer...would make this comment concerning my scientific method... this from the movie " Forbidden Planet "..."The fool, the meddling idiot! As though his ape's brain could contain the secrets of the Krell!"
But...in our own small way...each of us add to the knowledge base on the form !!
BTW...see the attached pic from Newport optics on Cylindrical lenses...some companies DO make some microlenses....so possibly this MAY be an option ??? Ask your friend about Anamorphic vs. Cylindrical.
But...from what I have been able to determine....both with Anamorphic and Cylindrical lenses....a perfect circularization is not possible....again...what is acceptable ??? Anyone have any opinions on this ?? or...maybe 99% are just fine with the standard aspherical lens in an axis module ??? I am not satisfied with this output. Later...CDBEAM
Attached Thumbnails
445LD with Anamorphic Prisms on a Jayrob DIY-newport-optics-cylindrical-lens-drawing.gif  



Last edited by CDBEAM777; 07-12-2010 at 03:11 PM.
CDBEAM777 is online now   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 07-12-2010, 04:00 PM #34
lasersbee's Avatar
Class 4 Laser
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,739
Rep Power: 41315
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
lasersbee lasersbee is offline
Class 4 Laser
lasersbee's Avatar
 
Join Date: Sep 2008
Location: Quebec, Canada
Posts: 15,739
Rep Power: 41315
lasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond reputelasersbee has a reputation beyond repute
Default Re: 445LD with Anamorphic Prisms on a Jayrob DIY

Hey... if I could get a 1/4" X 7/8" beam at 45' I would be happy...
Have you tried a lens right after the Prisms to try and focus the
beam from there...

I too like the "Trial and Error" method...
on your last prism setup...

Jerry
__________________

J.BAUER Electronics Home Page

LaserBee Laser Power Meter Products meet your needs
at affordable Prices:
See them all here on LPF

LaserBee Power Meter products ALWAYS in Stock
and ready to ship

Also available on eBay:Check availability here..

Subsidary: Pharma Electronic Solutions


This banner is available to and can be copied/used FREE by any LaserBee owner
lasersbee is offline   Reply With Quote
Old 07-13-2010, 03:44 AM #35
CDBEAM777's Avatar
Class 2M Laser
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
CDBEAM777 CDBEAM777 is online now
Class 2M Laser
CDBEAM777's Avatar
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
Default Re: 445LD with Anamorphic Prisms on a Jayrob DIY

Thanx Jerry,

Well...More Glass = More transmission loss...even with AR coating....I suppose one could use a anamorphic prism set to diverge the fast axis...then use a second set of anamorphic prisms to expand the slow axis so it is in balance with the fast axis....and IF each set of anamorphic prisms is limited to 3% transmission loss...then that would add up to a 6% loss...Well for me... this would be an acceptable trade off. These ideas are my speculations....and again...I know enough about these optic details to be very dangerous !!

Also the application of cylindrical lenses may be the route to follow. I am under the understanding that Dr. Lava is using this optical set up....and for vector graphics...this may be the ONLY way to go ??? I am reading up about cylindrical lenses...perhaps his " Ape's brain " can figure his way outta a paper bag...haha

Thanx for your interest....Hey...ANY Optical Engineers....feel free to jump into this discussion !!! Later...CDBEAM
CDBEAM777 is online now   Reply With Quote
Old 07-13-2010, 04:24 AM #36
Class 2 Laser
 
Join Date: Apr 2008
Location: Tucson, AZ
Posts: 373
Rep Power: 14
climbak is a jewel in the roughclimbak is a jewel in the roughclimbak is a jewel in the roughclimbak is a jewel in the rough
climbak climbak is offline
Class 2 Laser
 
Join Date: Apr 2008
Location: Tucson, AZ
Posts: 373
Rep Power: 14
climbak is a jewel in the roughclimbak is a jewel in the roughclimbak is a jewel in the roughclimbak is a jewel in the rough
Default Re: 445LD with Anamorphic Prisms on a Jayrob DIY

I am an optical engineer, but not by education and I don't deal directly with lens or optical system design. I mostly deal with laser systems and holography. Anyway, it would seem to me that a cylindrical lens pair would be the best way to collimate this diode. would the spot be as small as we'd all like? No. Would the beam be round? No. The divergence could be much more closely matched for the two axes though so there wouldn't be the nasty line. The overall divergence would probably also be better since in general a larger beam waist leads to less divergence. There may be other optics that can do the job as well, but I can't think of any off the top of my head that would be simple or cheap enough for most of us.

I think I am going to design and machine my own host if I ever get around to putting this diode I have to use and I will probably try to use a pair of cylinders to do the job.

Edit: if you really want a roundish beam anamorphic prisms may still be the best method. two pairs of them would probably work well to circularize the beam close to the output, but I think you would still have a different divergence for the 2 axes. If you can find a well matched pair of cylindrical lenses you should be able to get a relatively narrow beam and decent divergence.

All this is also ignoring any power losses as well as the affect of a multimode beam on the ability to properly collimate it.

Last edited by climbak; 07-13-2010 at 04:33 AM.
climbak is offline   Reply With Quote
Old 07-13-2010, 05:08 AM #37
CDBEAM777's Avatar
Class 2M Laser
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
CDBEAM777 CDBEAM777 is online now
Class 2M Laser
CDBEAM777's Avatar
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
Default Re: 445LD with Anamorphic Prisms on a Jayrob DIY

Thanx Cimbak....Again you have brought great information to the table !!! What would be the typical transmission loss be on a pair of cylindrical lenses ??? I assume they need to be AR coated and should be made from BK7 glass ?? THANX !!!!!!!!!!!!!! CDBEAM
CDBEAM777 is online now   Reply With Quote
Old 07-13-2010, 08:21 AM #38
Class 2 Laser
 
Join Date: Apr 2008
Location: Tucson, AZ
Posts: 373
Rep Power: 14
climbak is a jewel in the roughclimbak is a jewel in the roughclimbak is a jewel in the roughclimbak is a jewel in the rough
climbak climbak is offline
Class 2 Laser
 
Join Date: Apr 2008
Location: Tucson, AZ
Posts: 373
Rep Power: 14
climbak is a jewel in the roughclimbak is a jewel in the roughclimbak is a jewel in the roughclimbak is a jewel in the rough
Default Re: 445LD with Anamorphic Prisms on a Jayrob DIY

This is just a guess, but with a nicely AR coated lens made of BK7 or better yet fused silica or quartz, the reflection losses would be under 0.5%. Absorptive losses would vary on thickness but I imagine the lenses could be pretty thin, so no more than 5% loss. Then for 2 lenses you might get 10% loss. Again though with a good lens it could be lower, just not cheap. I think a 10% loss could be done relatively cheaply. If I end up doing my own set up soon I will be looking into this more thoroughly.
climbak is offline   Reply With Quote
Old 07-13-2010, 07:31 PM #39
MISTERWILLING's Avatar
Class 2 Laser
 
Join Date: Apr 2009
Posts: 356
Rep Power: 17
MISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to behold
MISTERWILLING MISTERWILLING is offline
Class 2 Laser
MISTERWILLING's Avatar
 
Join Date: Apr 2009
Posts: 356
Rep Power: 17
MISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to beholdMISTERWILLING is a splendid one to behold
Default Re: 445LD with Anamorphic Prisms on a Jayrob DIY

Quote:
Originally Posted by CDBEAM777 View Post
Thanx Cimbak....Again you have brought great information to the table !!! What would be the typical transmission loss be on a pair of cylindrical lenses ??? I assume they need to be AR coated and should be made from BK7 glass ?? THANX !!!!!!!!!!!!!! CDBEAM
If you have a week or two to wait, Dr. Lava will be releasing a kit that uses two very small cylindrical lenses. I think you may be able to purchase just the lenses themselves. Keep your out on PL.
__________________
5x Daedel DVD 22x Diodes
5x B0323 Blu-ray Diodes
2x 8x Blu-ray burner diodes
2x O-like 5~10mW green
O-like 120~150mW green
Custom machining available misterwilling@gmail.com
Rog's 7 color pocket spiro: In Progress
MISTERWILLING is offline   Reply With Quote
Old 07-13-2010, 09:05 PM #40
CDBEAM777's Avatar
Class 2M Laser
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
CDBEAM777 CDBEAM777 is online now
Class 2M Laser
CDBEAM777's Avatar
 
Join Date: Feb 2010
Posts: 879
Rep Power: 11937
CDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond reputeCDBEAM777 has a reputation beyond repute
Default Re: 445LD with Anamorphic Prisms on a Jayrob DIY

Mr. Willing....GREAT !!!! I am extremely pleased that you and the Doctor have used very small lenses in your designs....I knew your project was in the works....I was obviously following a parallel track....in a rather delayed fashion !!

Now that I know you are using very small optics...I will not reinvent the wheel...but will await your offering. As I am learning...the selection of the optimal Cylindrical lenses is much more involved than selecting Anamorphic prisms. Will your individual lens size be 10 x 10mm or 20 x 20mm ???? The reason for this question is so I can start to formulate some design concepts working around this footprint information.

I am sure your project has been in the works...likely from the first of this year...I truly appreciate your work and very much look foward to the roll-out !!!.....I will be watching...until then...CDBEAM
Attached Thumbnails
445LD with Anamorphic Prisms on a Jayrob DIY-monkeys_think5.jpg  

Last edited by CDBEAM777; 07-14-2010 at 04:13 AM.
CDBEAM777 is online now   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











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 03:38 PM.


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