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 > Optics



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



Reply
 
LinkBack Thread Tools Display Modes
Old 01-18-2013, 12:47 PM #1
hybridz0rz's Avatar
Junior Member
 
Join Date: Feb 2012
Location: Norway, Stavanger
Posts: 11
Rep Power: 0
hybridz0rz is on a distinguished road
hybridz0rz hybridz0rz is offline
Junior Member
hybridz0rz's Avatar
 
Join Date: Feb 2012
Location: Norway, Stavanger
Posts: 11
Rep Power: 0
hybridz0rz is on a distinguished road
Default Reducing beam size?

What lense combination would i use to reduce the size of a beam and still not lose to focusing abilies.
This is a lab laser so any lense combo would work.

Note: I'm not planning or throwing out 100 usd for lenses like this. I'm Looking for something cheap yet reasonable quality and would have some sort of mounting option.

I have been searching around and all i can find is industrial CO2 laser lenses and stuff.


__________________
_______________________________________

808nm ~ 2mW InfraredRed laser module (green wend boom)
650nm ~ 300mW Red Custom built.(new host soon)
635nm ~ 150mW SuperRed Custom build.
532nm ~ 135mW Rayfoss.
532nm ~ 5mW DX/yourlasers pointers.
405nm ~ 100mW Violet module.
RGB ~ 800mW Projector (currently building)
hybridz0rz is offline   Reply With Quote







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







Old 01-18-2013, 03:25 PM #2
pschlosser's Avatar
Class 2M Laser
 
Join Date: Dec 2012
Location: Santa Rosa, CA
Posts: 909
Rep Power: 65
pschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond repute
pschlosser pschlosser is offline
Class 2M Laser
pschlosser's Avatar
 
Join Date: Dec 2012
Location: Santa Rosa, CA
Posts: 909
Rep Power: 65
pschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond repute
Default Re: Reducing beam size?

I worked for a company that manufactured optics for various industries. I learned a great deal about optics during my tenure there. I was a thin film coater and applied coatings to optics. Some things I learned about light and beam diameter is that when light waves are parallel emitting from a point source, the fewer the optics you run the beam through, the tighter the beam.

Once you start washing parallel emissions (light) through optics, you lose some of the benefits a nice tight beam gives you, and introduce the need for focal length. If the focal length between the optic and the target remains constant, this isn't a problem. But it's less ideal for light-show applications.

I coated optics made of Germanium metal. A dull grey metal that absorbs visible light, but transmits (is transparent to) infrared light (IR). I see these often in surplus, but have never bothered to pick any up, since I have a substantial collection of Ge objects at home. You might look around on the net. They have limited application outside of IR light use, so the demand may be pretty low, driving the prices down.

This link to a simple Germanium optic explains the benefits of this metal quite well and succinctly.

Germanium Optical Windows

I hope this information is helpful.
pschlosser is offline   Reply With Quote
Old 01-18-2013, 10:37 PM #3
Bionic-Badger's Avatar
Class 4 Laser
 
Join Date: Oct 2007
Location: Oregon, USA
Posts: 5,478
Rep Power: 3157
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: 5,478
Rep Power: 3157
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: Reducing beam size?

Talk to Hakzaw1 about some beam expanders. They also work in reverse as beam reducers. The optics are from JetLasers, but at a very good price. Most beam expanders will cost at least $100, but he has some for about $50 or so.

Note that beam expanders are not focusing type optics. They'll take a parallel beam and produce a parallel beam. Also remember that the smaller the beam size, the greater the divergence, which means over long distances the beam size will grow larger faster. The reason people use beam expanders is to reduce divergences over longer distances.
__________________
You must spread some Reputation around before giving it to <person> again.
Bionic-Badger is offline   Reply With Quote
Old 01-19-2013, 12:17 AM #4
weeba2kv's Avatar
Class 3R Laser
 
Join Date: Sep 2010
Location: The netherlands
Posts: 1,374
Rep Power: 34
weeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond repute
weeba2kv weeba2kv is offline
Class 3R Laser
weeba2kv's Avatar
 
Join Date: Sep 2010
Location: The netherlands
Posts: 1,374
Rep Power: 34
weeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond reputeweeba2kv has a reputation beyond repute
Default Re: Reducing beam size?

useless to even reply on this question
__________________
Working lasers are.
400mw 532nm < dead
cute 5mw 532nm < my cat ate it
200mw 650nm < gave it away
1mw 632.8 nm HeNe
1.2-1.4watt 445nm

COHERENT INNOVA 90-5 GOD's power
MELLES GRIOT HeNe 75 mW max , 632.8 nm ( 38 mW )
weeba2kv is offline   Reply With Quote
Old 01-19-2013, 03:02 AM #5
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Reducing beam size?

You can use a <$5 chinese monocular if you're not too worried about power loss.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Reply

Tags
laser, reducing, 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 04:31 AM.


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