A Micro display is a display too small for direct viewing. They are usually used together with an optical system. Some micro displays are also called “Spacial Light Modulators”. Typical consumer applications are projectors and electronic view finders. Micro displays can also be used in a variety of applications like holography, pulse shaping, research and medical.
Micro OLED is typically used for electronic view finders. It is self emitting. Light output is normally not sufficient for projection.
A DLP display includes an array of micro mirrors that can fastly switch between 2 positions. Gray scale and color is modulated by the temporal ratio the mirrors stay in the on or off position. DLP displays can be used for projection and direct viewing. For smaller system color sequential operation is usual.
For highest light output like cinema projectors 3 DLP and a color combining optics is used.
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