Facts on 3D Glasses
With their distinctive red and blue lenses, 3-D glasses have become an iconic part of American pop culture. Technological advancements have kept them prominent in many forms of entertainment, including movies, TV shows, and the internet.
Other People Are Reading
-
Facts
-
3-D (three-dimensional) glasses provide depth and a sense of three dimensions to two-dimensional images. They reached a height of popularity during the 1950s with the advent of 3-D feature films.
Identification
-
Traditional 3-D glasses have one red acetate lens, usually over the left eye, and one blue acetate lens encased in white cardboard frames.
-
Function
-
3-D glasses work by presenting two slightly different perspectives of the same image. To take advantage of traditional red-and-blue 3D glasses, one version of the image is filmed in red, the other in blue. The 3-D glasses present a different perspective to each eye, tricking the brain into forming one three-dimensional image.
Types
-
Polarized 3-D glasses don't have colored lenses. Instead, they use dark lenses to restrict the passage of polarized light to the eye, creating the same three-dimensional illusion.
History
-
Charles Wheatstone invented 3-D anaglyphs in 1838, paving the way for the eventual development of 3-D entertainment. "Bwana Devil," released in 1952, was the first color 3-D feature film.
-
References
- Photo Credit Image by Flickr.com, courtesy of Kim Scarborough
