Lenticular Lens/Software
- 2012-07-23 09:40:05
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A lenticular is a combination of a special lens and an arrayed image that simulates animation or depth.
How it WorksA lenticular image has two components; a printed image and a lenticular lens screen through which the image is viewed. There are three simple steps from beginning to end.
1. Capturing the images. Since a lenticular image displays one image after another as you change your angle of view, it creates animations much like an old fashioned flipbook. For this reason, each image is called a flip. The more flips you use the more complicated planning and preparation become. For two flips, the process is quite straightforward. The basic rule is that the images must be the same size but they don't even have to be related. As you increase the number of flips the more movie-like the animation becomes. The number of images you can use is partly dependent on the size of the image. Smaller images can have more flips because the angle of view changes little from one side to the other. On larger images, when the angle of view varies a lot across the face of the image, the strips must be wider to prevent "ghosting" when you can see more than one strip. It's said that smaller images can contain 36 or more flips or frames, about 1 second of full-motion video.2. Interlacing the images. The interlacing software takes the selected images and cuts them into very narrow strips. It then interlaces these strips like a perfectly shuffled deck of cards. If two flips are being created, the first band is a strip from image 1, the second from image 2, the third from image 1, and so on. The software then saves the interlaced image in a file ready for printing.3. Printing and mounting the images. The interlaced image can be printed on any high quality printer. The print is on or later mounted behind the lenticular lens screen—a sheet of plastic on which a series of cylindrical lenses are molded in parallel rib-like rows. Each or the lenses, called a lenticule, has a focal length equal to the thickness of the clear plastic sheet on which it is molded. Each lenticule magnifies a very narrow strip of the image placed behind it. If you change your angle of view, the strip that is being magnified also changes.-------------------------------------------------------------------------------------------------------
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