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How Does 3D Work?
Most human beings use what is known as binocular vision to perceive depth and see the world in 3D. The binocular vision system relies on the fact that we have two eyes, which are approximately 3 in apart. This separation causes each eye to see the world from a slightly different perspective. The brain fuses these two views together. It understands the differences and uses them to calculate distance creating our sense of depth and ability to gauge distance.

A simple way to understand this principle is to hold your thumb up at arms length and close one eye. Then try closing the other eye. As you switch between open eyes you should see your thumb "jumping" back and forth against the background. To see how much of a difference the binocular vision system makes, have a friend throw you a ball and try to catch it while keeping one eye closed.

+ Read more

Now find out how to:
+ Build your own 3D glasses
+ Create your own 3D images

If you decide to purchase your 3D glasses:

Glasses for viewing 3D anaglyphs STEREO images may be purchased from several sources, several of which are listed below. The vendor names and addresses are provided as a service to Internet users, and NASA does not endorse or warrant any of these companies or their products.

Anyone interested in obtaining 3D glasses from one of the vendors below should contact the vendor directly to check on availability and prices. When using 3D glasses, remember that the left eye should be red, and the right eye cyan (deep greenish-blue color).

Rainbow Symphony, Inc.
6860 Canby Ave. Suite 120
Reseda, CA 91335 USA
(818) 708-8400
+ View site

Deep Vision 3D
P.O. Box 38386
Hollywood, CA 90038 USA
(323) 465-5819
+ View site

AnaChrome 3D
PO Box 941112
Simi Valley, CA 93094-1112 USA
(818) 399-9745
+ View site

5240 Medina Road
Woodland Hills, CA 91364
(818) 592-0999
+ View site, Inc
+ View site

Berezin Stereo Photography Products
21686 Abedul
Mission Viejo, CA 92691
(949) 215 1554
+ View site

Katernberger Straße 107
45327 Essen
Tel. ++49 (0) 201 - 6 34 97 60
Fax ++49 (0) 201 - 6 34 97 66
+ View site

American Paper Optics LLC
3080 Bartlett Corporate Drive
Bartlett, Tennessee 38133
901-381-1515 --- 800-767-8427
Fax 901-381-1517
+ View site

Relief virtuel Stereoscopy
16 Route de la Briqueterie
44380 Pornichet
Tel. : 33 (0) 2 40 11 62 99
Fax : 33 (0) 2 40 61 16 92
+ View site Ltd
29 Harley St.
London, England
Tel. 0845 6887277
+ View site

P.O. box 1450
3000 BL, Rotterdam
The Netherlands
Tel.: +31 10 2449050
+ View site

If you’re a company that would like to be listed as a source for 3D glasses, please contact Steele Hill:
Phone: 301-286-6452