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Video magnifier. Video magnifiers are electronic devices that use a camera and a display screen to perform digital magnification of printed materials. The display screen is usually LCD or a similar flat-screen technology (although older video magnifiers have used CRT displays), and the device usually includes a lamp to illuminate the source ...
A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle. Beyond its primary function of magnification, this simple yet ingenious tool serves a variety of purposes. It can be employed to focus sunlight, harnessing the Sun's rays to create a concentrated hot ...
Loupe. A photographic loupe for examining film and prints. A loupe ( / ˈluːp / LOOP) is a simple, small magnification device used to see small details more closely. [ 1] They generally have higher magnification than a magnifying glass, and are designed to be held or worn close to the eye. A loupe does not have an attached handle, and its ...
A view through the Mark III Free Gun Reflector Sight, first produced in 1943, used on British army guns, naval guns, and as a pilot sight and a defensive gun sight on aircraft. The reticle image in this sight is produced by an optical collimator bounced off a beam splitter. The dot remains on the target even though the viewer's head is moved ...
This reading magnifier makes it easier to see books, newspapers, and so much more. (Photo: Amazon) "Love it!" one customer raved. "The packaging seems to be geared toward seniors. I’m only 50 ...
Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a size ratio called optical magnification. When this number is less than one, it refers to a reduction in size, sometimes called de-magnification .
Eye tracking device is a tool created to help measure eye and head movements. The first devices for tracking eye movement took two main forms: those that relied on a mechanical connection between participant and recording instrument, and those in which light or some other form of electromagnetic energy was directed at the participant's eyes and its reflection measured and recorded.
A screen reader is a form of assistive technology ( AT) [ 1] that renders text and image content as speech or braille output. Screen readers are essential to people who are blind, [ 2] and are useful to people who are visually impaired, [ 2] illiterate, or have a learning disability. [ 3] Screen readers are software applications that attempt to ...
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