Technology Era

Information Age, Computer Age, Digital Age, or New Media Age, is a historic period in the 21st century.


Long-focus lens and focal length microscope

According to Wikipedia, a long-focus lens is a camera lens which has a focal length that is longer than the diagonal measure of the film or sensor that receives its image, in photography, . It is used to make distant objects appear magnified with magnification increasing as longer focal length lenses are used. A long-focus lens is one of three basic photographic lens types classified by relative focal length, the other two being a normal lens and a wide-angle lens. As with other types of camera lenses, the focal length is usually expressed in a millimeter value written on the lens, for example...

What is Digital micromirror device?

Its resource comes from wikipedia:The digital micromirror device, or DMD, is the micro-opto-electromechanical system (MOEMS) that is the core of the trademarked DLP projection technology from Texas Instruments (TI). The DMD was invented by solid state physicist and TI Fellow Emeritus Dr. Larry Hornbeck in 1987.The DMD project began as the Deformable Mirror Device in 1977 using micromechanical analog light modulators. The first analog DMD product was the TI DMD2000 airline ticket printer that used a DMD instead of a laser scanner.A DMD chip has on its surface several hundred thousand microscopi...

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