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About Casting Reels, 3D Technology, and View Masters

by francescaslone

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Do you have any idea regarding 3D technology? By definition, 3D stands for "three-dimensional"-- a technology that offers a whole world of fresh possibilities, particularly in the field of entertainment. Using 3D technology in laptop computers, televisions, custom casting reels, cinemas, and other media has really allowed it to earn its specific niche as a valid, widely embraced entertainment technology.

Have you ever wondered how 3D technology works? To understand this exciting technology, you first need to know a bit about how your eyes work. A person's eyes are set a couple of inches apart, and each one actually sees a slightly different image. The brain refines these images, and the difference that the brain "sees" in between the two is what gives the person the capacity to perceive depth.

In a sense, 3D innovation "fools" the brain to perceive depth where there is none. The technology achieves this by displaying two identical images on the display. Early 3D technology used color-tinted glasses to produce 3D pictures: one red, and one blue. These glasses filtered the photos on the screen so that each eye can view a considerably different perspective of a picture. It works, but the pictures formed by these glasses weren't that great. In fact, they've been known to trigger headaches and queasiness.

Currently, polarized and active shutter glasses are the most preferred forms of 3D viewing devices. Polarized glasses have polarization set at 90-degree angles while two projectors project 2 virtually identical pictures-- one for every eye. Active-shutter glasses are powered glasses with shutters that close and open in time with the refresh speed of the TV monitor. This makes things possible for each eye to perceive just the pictures they are meant to see.

It's also possible to view 3D photos today without using glasses at all. Lens-free 3D technology really appeals to people who like to view 3D movies at length but aren't so fond of wearing glasses while doing so. This can be done by hooking up a special lens onto an LCD television screen. The drawback is you need to be seated within a particular range for the lens to function adequately.

3D technology has surely gone a long way since the View Master devices you may have tinkered with as a kid. Judging from the manner it has advanced, it appears that 3D technology is here to make even more waves. Find out the history of the View-Master from

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