Go Back   Physics Help Forum > High School and Pre-University Physics Help > Light and Optics

Light and Optics Light and Optics Physics Help Forum

Reply
 
LinkBack Thread Tools Display Modes
Old Aug 28th 2019, 06:07 PM   #1
Junior Member
 
Join Date: Aug 2019
Posts: 1
Question Question about zooming out with lens

Hey guys, I need some help. I am working on a project and I am wondering if it is possible to make an object to look 100 times far away than it is actually using lens (or more than one lens). The lens (or lenses) should be near the object, not near the eye. For example if we have lens in front of a strawberry that is 20cm from the eye to be visible as it is 2000cm away. I did some research and understood that i might need concave lens but I am not sure how to calculate the specification of the lens that will zoom out as much as i need and if it is possible at all to zoom out that much. I will appreciate any help! Thanks!
sako is offline   Reply With Quote
Old Aug 31st 2019, 08:05 AM   #2
Junior Member
 
Join Date: Aug 2019
Posts: 25
Hi.
I don' t have directly an answer.
But I know, when using a binocular in reverse
direction, it gives this "it looks far away effect".

Kind regards. Marcel.
cobaltBlue is offline   Reply With Quote
Old Sep 2nd 2019, 04:32 AM   #3
Senior Member
 
Woody's Avatar
 
Join Date: Jun 2016
Location: England
Posts: 998
The geometry of the problem means that the optical changes are easier to do close to the eye.
A very close analogy would be the length of a lever and the position of its pivot point.

So what you suggest might be theoretically possible,
but there would be some fairly substantial practical issues.
__________________
~\o/~
Woody is offline   Reply With Quote
Reply

  Physics Help Forum > High School and Pre-University Physics Help > Light and Optics

Tags
lens, question, zooming



Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
Question about lens maker's formula kelsiu Advanced Optics 2 Aug 9th 2015 02:11 PM
Conceptional question for Lens optics kenny1999 Light and Optics 0 Nov 12th 2010 06:22 AM
Converging Lens Related Question Kookehs Light and Optics 5 Oct 13th 2010 07:30 AM
intresting question on plano concave lens binayakafle Light and Optics 5 Mar 2nd 2010 12:40 AM
Magnifying Lens question TheBerkeleyBoss Light and Optics 1 Sep 10th 2009 11:52 PM


Facebook Twitter Google+ RSS Feed