FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   PreferencesPreferences   Log in to check your private messagesLog in to check your private messages   Log inLog in 
Forum index » Medicine forums » vision
Optical Clarity
Post new topic   Reply to topic Page 1 of 1 [3 Posts] View previous topic :: View next topic
Author Message
Alana
medicine forum beginner


Joined: 11 Apr 2006
Posts: 8

PostPosted: Sun Apr 23, 2006 11:16 pm    Post subject: Optical Clarity Reply with quote
Where can I find a list of optical lens materials and their optical clarity.

Thanks

Konnie
Back to top
Neil Brooks
medicine forum Guru


Joined: 24 Mar 2005
Posts: 1148

PostPosted: Mon Apr 24, 2006 6:26 am    Post subject: Re: Optical Clarity Reply with quote
On Sun, 23 Apr 2006 16:16:40 -0700, "Alana" <mail@thirdreef.net>
wrote:

Quote:
Where can I find a list of optical lens materials and their optical clarity.

Thanks

Konnie



Something like this?

http://www.firstvisionmedia.com/uww/2005_lens/savvy_lens.html
Back to top
Mark A
medicine forum Guru Wannabe


Joined: 30 Apr 2005
Posts: 226

PostPosted: Tue Apr 25, 2006 12:34 am    Post subject: Re: Optical Clarity Reply with quote
"Neil Brooks" <neil0502@yahoo.com> wrote in message
news:7tro42laguci16o0pse3qva9m8qlrj3fu7@4ax.com...
Quote:

Something like this?

http://www.firstvisionmedia.com/uww/2005_lens/savvy_lens.html

I am not sure that the abbe values in that article are accurate anymore.
Robert M. has said that most vendors have switched to a higher abbe value
material for 1.60 index.

Also, I believe that Sola says that their polycarb is abbe 30, and I suspect
that others are also. Maybe there is a newer version that is abbe 32, but I
would be skeptical.

In any event, there is are two things to consider when looking for lens
material quality:

1. Usually, the higher the index, the thinner/lighter the lens, and the
worse the optical quality (lower the abbe value).

2. Polycarbonate has the worst optical quality of any commonly available
plastic material, and should be avoided like the plague.
Back to top
Google
Back to top
Display posts from previous:   
Post new topic   Reply to topic Page 1 of 1 [3 Posts] View previous topic :: View next topic
The time now is Fri Mar 12, 2010 8:02 pm | All times are GMT
Forum index » Medicine forums » vision
Jump to:  

Similar Topics
Topic Author Forum Replies Last Post
No new posts Optical Illusions Buffoon vision 0 Fri Jul 21, 2006 12:40 pm
No new posts The development trend for optical tra... nonford lyme 0 Thu Dec 22, 2005 8:50 am
No new posts Optical Coherence Tomography question Kyle vision 10 Sat Oct 29, 2005 6:12 am
No new posts Chart of standard contact Optical Zon... U-Bob vision 5 Thu Jun 23, 2005 5:43 pm
No new posts Article: Even Babies Can Have Optical... Francine vision 0 Thu Apr 21, 2005 4:33 pm

Copyright © 2004-2005 DeniX Solutions SRL
Other DeniX Solutions sites: electronics forum, Science forum Unix/Linux blog Unix/Linux documentation Unix/Linux forums


Powered by phpBB © 2001, 2005 phpBB Group

[ Time: 0.1835s ][ Queries: 12 (0.1584s) ][ GZIP on - Debug on ]