Previous in Forum: Ph Alkali acid?   Next in Forum: Secondary Functional Polyols
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
4 comments
Rate Comments: Nested
Nachi
Power-User

Join Date: Nov 2006
Location: Mumbai-57
Posts: 107
Good Answers: 1

Fresnel Lens

04/11/2007 3:12 AM

Fresnel lens with concentric rings, what is it?
Register to Reply
Pathfinder Tags: optics
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
BrainWave
Guru
Popular Science - Weaponology - New Member

Join Date: Feb 2006
Posts: 962
#1

Re: Fresnel lens

04/11/2007 3:22 AM

A way of magnifying named after Mr Fresnell Try Wikipedia.

__________________
 There's them that knows and them that just thinks they know, whitch are you? Stir the pot and see what rises up. I have catalytic properties I get a reaction going.
Register to Reply
Nachi
Power-User

Join Date: Nov 2006
Location: Mumbai-57
Posts: 107
Good Answers: 1
#3
In reply to #1

Re: Fresnel lens

04/11/2007 4:42 AM

Thanks, got it all.
Register to Reply
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#2

Re: Fresnel lens

04/11/2007 4:07 AM

A way of creating a large lens with a strong magnification or reduction, while using the minimum amount of glass.

A good example would be found in the lens array of a lighthouse beacon.

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Steve Melito
Guru
United States - Member - New Member Technical Fields - Technical Writing - New Member Popular Science - Weaponology - Organizer Hobbies - Target Shooting - New Member Engineering Fields - Nuclear Engineering - New Member

Join Date: Mar 2005
Posts: 2969
Good Answers: 33
#4

Re: Fresnel Lens

04/11/2007 8:28 AM

Check out this link on GlobalSpec.

http://optical-components.globalspec.com/LearnMore/Optics_Optical_Components/Optical_Components/Fresnel_Lenses
Register to Reply
Register to Reply
Have a Different Question?
4 comments
Copy to Clipboard

Users who posted comments:

BrainWave (1); Nachi (1); PWSlack (1); Steve Melito (1)

Previous in Forum: Ph Alkali acid?   Next in Forum: Secondary Functional Polyols

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Chemical & Material Science:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (95 right now)
Show Members
Advertisement