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 > Experiments & Modifications



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



Reply
 
LinkBack Thread Tools Display Modes
Old 06-22-2007, 03:20 AM #1
Member
 
Join Date: May 2007
Posts: 46
Rep Power: 0
Zander has a spectacular aura aboutZander has a spectacular aura aboutZander has a spectacular aura about
Send a message via AIM to Zander
Zander Zander is offline
Member
 
Join Date: May 2007
Posts: 46
Rep Power: 0
Zander has a spectacular aura aboutZander has a spectacular aura aboutZander has a spectacular aura about
Send a message via AIM to Zander
Default IR filter from a CD?!

I was playing around with some Memorex "Cool Colors" CD-R CD's (the red one is the one that gives this effect) with my green laser and I discovered that the part of the CD that touches the inside circle, as pictured below kinda works as an IR filter. That, or it just really, REALLY dims the light.

This is the CD I used with an arrow pointing to the part that I shined the laser through.


This is a close-up of that part.


This is the laser by itself on my wall.


This is the same laser through the CD (view the full size image to really see the difference).


I'm not sure if this thread is in the right section, sorry if it's not.


Zander is offline   Reply With Quote







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







Old 06-22-2007, 03:55 AM #2
Class 2M Laser
 
Join Date: May 2007
Posts: 635
Rep Power: 33
Greenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond repute
Send a message via MSN to Greenie
Greenie Greenie is offline
Class 2M Laser
 
Join Date: May 2007
Posts: 635
Rep Power: 33
Greenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond repute
Send a message via MSN to Greenie
Default Re: IR filter from a CD?!

Thats kool. Only with the red one?

Off TOPIC \/

I have this glass ball with some sort of light-purple metallic paint on it
that turns my green beam to red.

Any clue why?
Greenie is offline   Reply With Quote
Old 06-22-2007, 06:36 AM #3
Class 2M Laser
 
Join Date: Feb 2007
Posts: 609
Rep Power: 23
stevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud of
stevetexas stevetexas is offline
Class 2M Laser
 
Join Date: Feb 2007
Posts: 609
Rep Power: 23
stevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud of
Default Re: IR filter from a CD?!

"I was playing around with some Memorex "Cool Colors" CD-R CD's (the red one is the one that gives this effect) with my green laser and I discovered that the part of the CD that touches the inside circle, as pictured below kinda works as an IR filter. That, or it just really, REALLY dims the light. " - Zander

The only way to know if it blocks IR is to test it. I can say that it does block a lot of the green - sort of like the laser glasses (the color of the plastic is similar). Don't assume it blocks ANY IR though - some filters block only narrow portions of the spectrum.


stevetexas is offline   Reply With Quote
Old 06-22-2007, 06:47 AM #4
Member
 
Join Date: May 2007
Posts: 46
Rep Power: 0
Zander has a spectacular aura aboutZander has a spectacular aura aboutZander has a spectacular aura about
Send a message via AIM to Zander
Zander Zander is offline
Member
 
Join Date: May 2007
Posts: 46
Rep Power: 0
Zander has a spectacular aura aboutZander has a spectacular aura aboutZander has a spectacular aura about
Send a message via AIM to Zander
Default Re: IR filter from a CD?!

I have no way of testing it but anyone can pick these things up at a Walmart or Target or any store like that for pocket change. Maybe someone why has the means of testing it could do that. Also, the black colored CD also does the same thing.
Zander is offline   Reply With Quote
Old 06-22-2007, 07:36 AM #5
Class 2M Laser
 
Join Date: Feb 2007
Posts: 609
Rep Power: 23
stevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud of
stevetexas stevetexas is offline
Class 2M Laser
 
Join Date: Feb 2007
Posts: 609
Rep Power: 23
stevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud ofstevetexas has much to be proud of
Default Re: IR filter from a CD?!

If I see one in my travels I'll grab one and check it out - good idea. If they're that cheap, the could be cut for filters as you suggested.
stevetexas 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











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 02:42 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