The workings of 3D Glasses

The workings of 3D Glasses

Source :Flickr.com

Although the year 1950 is considered as the era of 3-D movies, the first 3D movie, 'The Power of Love', it made ​​the tahun1922. Since then the use of 3D technology in the big screen or television has experienced ups and downs in popularity. And for those who have enjoyed watching a 3D movie, it must be admitted that the 3D glasses is fantastic and efficient.

These glasses are made to make the image on cinema and television films such as 3-dimensional scene that happened right in front of you. With the moving objects in and out of the screen and seemed headed toward you, and the bad guys are moving out to catch and grab your hand, 3D glasses make you feel part of the movie scene, not just someone sitting there watching the scene. Given these tools have a high entertainment value, you will be surprised how simple it is actually 3D glasses.

In this article, we will only discuss the two types of 3D glasses are the most popularly used. But before that, we first find out about the binocular system.

Humans are born with two eyes and binocular vision system that is extraordinary. For objects with a distance of more than 20 feet (6 till 7 meters), the binocular system makes us easily determine how far away the object accurately. As an example. If there are multiple objects in the future, we will easily find out which one is more distant objects and objects which are closer, and how far away the object is within us. If you look at the world with one eye closed, you will still be able to estimate the distance, but the distance will decrease the accuracy of the estimates.

To see how big the difference is, ask a friend to throw the ball and try to catch the ball while your eye closed. Also try a little light in the room or at night. In conditions of low light availability, the difference will be more visible. It is more difficult to catch the ball with one eye open just in appeal both eyes open.

Or do the following experiment.

Focus your eyes on the image of an eye you below. Then put your thumb in front of your nose is blocking the view. The view remains focused on drawing the eye earlier. Then you will see the eye is located between the two thumbs. And if you switch the view focus on your thumb, then your thumb is in the image of two eyes. If you get results like that, then your binocular system is still functioning well.

Binocular vision system based on the fact that the two eyes are separated by a distance of 2 inches (5 cm). Thus, each eye sees the world from a slightly different perspective, and the brain uses the difference to calculate distance accurately. The brain has the ability to correlate and predict the position, distance, and even the speed of an object through the data obtained from eye binocular system.

In a 3D movie, the reason why you wear 3D glasses is to feed different images of the eye. The screen actually displays two images, and the glasses cause one image into one eye, and other images into the other eye. There are two commonly used systems.

A. Glasses of different colors. Red / green or red / blue

The system uses different colored glasses. Red / green or the more common red / blue. In a 3D movie, the projector will display two types of images at once. Filters on the glasses allow only one type of images into each eye, then the brain will do the rest. The system has a different color glasses weaknesses. Colors in the movie does not look very well, so the picture quality looks so good before.

B. Polarization glasses

At Disney World, Universal studios, and other 3D space, the method used is a polarizing lens, because it produces a better image quality. Two projectors project two respective pieces on display, each with a different polarization. Glasses make just one image into each eye because there are lenses with different polarization.