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 > Tutorials, Help & Repairs



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



Reply
 
LinkBack Thread Tools Display Modes
Old 08-11-2012, 03:07 AM #1
Class 1 Laser
 
Join Date: Jul 2012
Location: Dallas, TX USA
Posts: 90
Rep Power: 16
viking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud of
viking viking is offline
Class 1 Laser
 
Join Date: Jul 2012
Location: Dallas, TX USA
Posts: 90
Rep Power: 16
viking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud of
Default Beam size thin?

I noticed a lot of video and pictures of 445's with a really fat beam... take a look at this beam... it is a 445nm M140 with 405-G-2 Glass Lens.

I know the video isn't great... but you can see some of the beam... it seems really skinny compared to some i've seen here? Are there special optics or maybe just different camera exposures? the clover shape in the background is my driver heatsink... 3 pennies ground smooth and thermally adhered to the driver.. the pennies get REALLY hot so I guess it's working!

Attached Thumbnails
Beam size thin?-screen-shot-2012-08-10-10.25.17-pm.png  



Last edited by viking; 08-11-2012 at 03:25 AM.
viking is offline   Reply With Quote







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







Old 08-11-2012, 03:26 AM #2
ARG's Avatar
ARG ARG is offline
Super Moderator
 
Join Date: Feb 2011
Location: Canada
Posts: 6,987
Rep Power: 1891
ARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond repute
ARG ARG is offline
Super Moderator
ARG's Avatar
 
Join Date: Feb 2011
Location: Canada
Posts: 6,987
Rep Power: 1891
ARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond repute
Default Re: Beam size thin?

The beam looks like this - so if you film it from the top you see a fat beam. If you film it from the side, then you see a thin beam. It also depends on the focus. If it's focused to infinity it will look fatter than if it's focused to a point a foot away.

Last edited by ARG; 08-11-2012 at 03:26 AM. Reason: Thing =/= thin
ARG is offline   Reply With Quote
Old 08-11-2012, 03:27 AM #3
Bionic-Badger's Avatar
Class 4 Laser
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,476
Rep Power: 1792
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Bionic-Badger Bionic-Badger is offline
Class 4 Laser
Bionic-Badger's Avatar
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,476
Rep Power: 1792
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Default Re: Beam size thin?

I don't know how you can tell a difference from a video like that. Anyway if the guy is burning stuff, he's probably not using a collimated beam, but rather just focusing down onto a spot so there isn't really a good comparison here.
__________________
You must spread some Reputation around before giving it to <person> again.
Bionic-Badger is offline   Reply With Quote
Old 08-11-2012, 03:29 AM #4
Class 1 Laser
 
Join Date: Jul 2012
Location: Dallas, TX USA
Posts: 90
Rep Power: 16
viking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud of
viking viking is offline
Class 1 Laser
 
Join Date: Jul 2012
Location: Dallas, TX USA
Posts: 90
Rep Power: 16
viking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud ofviking has much to be proud of
Default Re: Beam size thin?

"focused to infinity" does that mean that the focus ring is tightened all the way to the right?
viking is offline   Reply With Quote
Old 08-11-2012, 04:00 AM #5
ARG's Avatar
ARG ARG is offline
Super Moderator
 
Join Date: Feb 2011
Location: Canada
Posts: 6,987
Rep Power: 1891
ARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond repute
ARG ARG is offline
Super Moderator
ARG's Avatar
 
Join Date: Feb 2011
Location: Canada
Posts: 6,987
Rep Power: 1891
ARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond reputeARG has a reputation beyond repute
Default Re: Beam size thin?

Quote:
Originally Posted by viking View Post
"focused to infinity" does that mean that the focus ring is tightened all the way to the right?
It means it's focused such that the beam is best for pointing at objects far away.
ARG is offline   Reply With Quote
Old 08-11-2012, 05:53 AM #6
Bionic-Badger's Avatar
Class 4 Laser
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,476
Rep Power: 1792
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Bionic-Badger Bionic-Badger is offline
Class 4 Laser
Bionic-Badger's Avatar
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,476
Rep Power: 1792
Bionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond reputeBionic-Badger has a reputation beyond repute
Default Re: Beam size thin?

You can't depend on the focus knob to tell you anything about how the beam is focused. The focal point of the optics could be in front of the lens, at "infinity", or even behind the lens so that the beam is always diverging.
__________________
You must spread some Reputation around before giving it to <person> again.
Bionic-Badger is offline   Reply With Quote
Reply

Tags
beam size





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 03:23 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