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 11-17-2013, 09:27 PM #1
Fritz The Cat's Avatar
Junior Member
 
Join Date: Sep 2013
Location: Detroit Michigan USA
Posts: 27
Rep Power: 0
Fritz The Cat is on a distinguished road
Fritz The Cat Fritz The Cat is offline
Junior Member
Fritz The Cat's Avatar
 
Join Date: Sep 2013
Location: Detroit Michigan USA
Posts: 27
Rep Power: 0
Fritz The Cat is on a distinguished road
Default What is a G2 glass lens mae of ?

I did some research and have not found the specifications of G2 glass lens . Is it the glass or the coating that gives G@ glass lens its property?

Please understand I grind and polish my own telescope mirrors and am not afraid to take on grinding a small lens. Now the coating I don't think I can do.

So has anyone measured the focal lenght of some of these lens.

Edit : I'm back , I found some references about focal lenght and diameter of lens. I found two sizes ,6 mm about and 9 mm about . The thread said one could get a better beam with one when the focal lenth was a couple of MMs longer . Why not use laeger lens like 12 mm or more ? What focal lenght would be goo to start with ? Thanks for your input ,


__________________
"I see you have constructed a new lightsaber. Your skills are complete.

Last edited by Fritz The Cat; 11-18-2013 at 06:28 PM. Reason: Added more thoughts .
Fritz The Cat is offline   Reply With Quote







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







Old 11-17-2013, 09:46 PM #2
Class 2 Laser
 
Join Date: Mar 2013
Location: Berlin ; Germany
Posts: 315
Rep Power: 83
shokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond repute
shokkunlasers shokkunlasers is offline
Class 2 Laser
 
Join Date: Mar 2013
Location: Berlin ; Germany
Posts: 315
Rep Power: 83
shokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond reputeshokkunlasers has a reputation beyond repute
Default Re: What is a G2 glass lens mae of ?

both of course

1. its glass as the name says the shape of the lens is asspherical / near to impossible to grind it by hand /

2. the coating only reduces how much light of a certain wavelength range gets reflected from the surface of the lens idk which is used on the g2 proably MgF2 for 300nm-700nm

if you want to make a lens ... buy it! you can't grind BK7 optical glass with normal tools asspecially no asspherical ones

Last edited by shokkunlasers; 11-17-2013 at 09:48 PM.
shokkunlasers is offline   Reply With Quote
Old 11-17-2013, 09:48 PM #3
Blord's Avatar
Class 4 Laser
 
Join Date: Dec 2007
Location: Belgium
Posts: 5,368
Rep Power: 870
Blord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond repute
Blord Blord is offline
Class 4 Laser
Blord's Avatar
 
Join Date: Dec 2007
Location: Belgium
Posts: 5,368
Rep Power: 870
Blord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond repute
Default Re: What is a G2 glass lens mae of ?

Cool that you grind and polish your own telescope mirrors. It is for the Dobson telescope I suppose.
Just curious. What is the largest size mirror you have made ?
__________________
405nm 400mW S06J C6
445nm 3W Big Boy, 2.8W Dominator, 2.4W Steel Laser
450nm 240mW PL450 C6
473nm 100mW PGL-III-C-473
520nm 55mW Skylaser PL520
532nm 821mW Skylaser PL532, 133mW Jetlasers Ti-B
589nm 100mW PGL-III-C-589
635nm 70mW Sanyo SenTorch
638nm 175mW Ehgemus, 1W Rook
660nm 1216mW Skylaser PL660, 263mW LPC826 C6
685nm 33mW Fujitsu FLD6A2TK C6
780nm 150mW Dilda
808nm 640mW C6

I have copper 501B and Dominator lasers for sale !
Blord is offline   Reply With Quote
Old 11-17-2013, 10:17 PM #4
Fritz The Cat's Avatar
Junior Member
 
Join Date: Sep 2013
Location: Detroit Michigan USA
Posts: 27
Rep Power: 0
Fritz The Cat is on a distinguished road
Fritz The Cat Fritz The Cat is offline
Junior Member
Fritz The Cat's Avatar
 
Join Date: Sep 2013
Location: Detroit Michigan USA
Posts: 27
Rep Power: 0
Fritz The Cat is on a distinguished road
Default Re: What is a G2 glass lens mae of ?

I've completed an 8" f7 Newtonian . Thats a 57 inch focal length with a 12 mm eyepiece that gives me a plus100x view Its mounted on a pipe fixture along the equatorial lines. With a cement base it weights over 250 lbs . My favorite magnification is about 100x plus. I was able to view planetary detail back in 1988 when Mars was very close. I can also split saturns rings and see cassinis divion which is about .5 arc seconds . (i think?)e 'large" completed an 12.5 inch f5 mirror which needs a little optica polishing and eeds a telescope tube.http://l

In addition about dozen small telescopes 6 inchs and under for friens .

I also ground a ruby rod on diamond wheels. Its about 2.5 incjhs long about the thickness of a pencil . Laser anyone ?

I', going to hook up a Laser ,green , to my 8 inch telescope to assist my finder scope.

Amatuer telescope makers have tackled small asspherical lens by first grinding and polishing the lens and tool at the same time. Once you have two perfect spherical sufaces to start polishing the lens with special lapping tools to change it from a sphere to a parabolodal surface or any othe revolved curved line suface. You can measure the amount of correction with a newtonian interferometer and a monochromatic light source using the perfect tool l . Simple once you have done it ,hard to explain . I expected a nay sayer anyways no problem
__________________
"I see you have constructed a new lightsaber. Your skills are complete.

Last edited by Fritz The Cat; 11-17-2013 at 10:34 PM.
Fritz The Cat 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 08:30 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