How+do+3D+glasses+work?+Part+2

How 3D Glasses Work - 2011 By Joe M.

I’m guessing you’ve been to a 3D movie before, and you were wondering how they make the picture pop out at you just from wearing the glasses.





Human Eye

First you have to know how the eye works. Your eyes are an important part of your body. They allow you to do daily tasks. To see, your sight has continuous interactions with your eyes, nervous system, and your brain. Your eyes blink about once every 6 seconds to clear out your eyes. When people see an object they see the refection of the light bouncing off the object. There are 6 muscles that hold the eyeball in place and make it move from one side to the other or move it up and down. Light passes through your pupil and your cornea then your brain analyzes the light.

Binocular Vision

Now that you know about the human eye you need to know about binocular vision. Binocular vision helps you tell how far away something is. The reason why your binocular vision works is the different perspective of your eyes being 2 inches apart. Your brain has the ability to see things slightly different.

Polarization

You need to learn about polarization now. 3D glasses work because there are two pictures on the movie screen. To make the movie pop out at you it relies on polarization. Polarization is when the light is bounced off the screen and the light is lined up in a certain spot that the people making the movie want the want the light to hit your eyes. Only one picture enters your eye because of the polarization in the lenses of the projectors are different.



The View Master

The view master has 2 camera pictures of the same thing. The reason why it has 2 pictures of the same thing is because the lenses cause one image to enter one of your eyes and the other image enters the other eye. Your eyes already see slightly different so it tricks your brain into seeing 3D.

More Interesting Facts

The first 3D movie was called the “Power of Love”. It was created in 1922. As you know there are two pictures on the screen and one picture goes into one eye and the other picture goes into the other eye. The blue and red lenses of the 3D glasses filters the picture so one picture will enter one eye and the other picture enters the other eye.

Glossary Polarization- when light bounces of the screen and into a certain spot in your eyes. Binocular vision- it allows you to see if an object is close to you of far away from you. Human eye- the human eye allows you to see

optic chiasm: visual pathways. Art. Encyclopedia Britannica. Web. 23 Sept. 2011. . Brain, Marshall. "How 3-D Glasses Work" 18 July 2003. HowStuffWorks.com.  23 September 2011.