The projector world may be familiar to some, but totally foreign to others. I’m a computer geek through and through, but to be honest, I didn’t know much about lumens, nor did I have any idea what a MEMS was.
So here’s a few definitions for new pico projector enthusiasts:
1. Lumens
The lumen (symbol: lm) is the SI unit of luminous flux, a measure of the perceived power of light. Luminous flux differs from radiant flux, the measure of the total power of light emitted, in that luminous flux is adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light. The lumen is defined in relation to the candela by
1 lm = 1 cd·sr = 1 lx·m2
That is, a light source that uniformly radiates one candela in all directions radiates a total of 4? lumens. If the source were partially covered by an ideal absorbing hemisphere, that system would radiate half as much luminous flux—only 2? lumens. The luminous intensity would still be one candela in those directions that are not obscured.
- Source Wikipedia
2. MEMS
Microelectromechanical systems (MEMS) (also written as micro-electro-mechanical, or MicroElectroMechanical) is the technology of the very small, and merges at the nano-scale into nanoelectromechanical systems (NEMS) and nanotechnology.
Source- Wikipedia
3. MEMS Scanning Mirror
Microvision’s MEMS scanning mirror is a silicon device at the center of which is a tiny mirror. This mirror is connected to small flextures allowing it to oscillate. The 2D MEMS scanner oscillates vertically and horizontally to capture (imaging) or reproduce (display) an image pixel-by-pixel. 2D MEMS scanners are used in the PicoP display engine that powers Wearable Displays, Vehicle Displays and Pico Projector Displays. A 1D MEMS scanner, as used in the ROV Scanner, oscillates along one axis only and is used to capture a bar code image.
Source – Microvision
4. DLP (Digital Light Processing)
Digital Light Processing (DLP) is a trademark owned by Texas Instruments, representing a technology used in projectors and video projectors. It was originally developed in 1987 by Dr. Larry Hornbeck of Texas Instruments.
DLP is used in DLP front projectors (small standalone projection units) and DLP rear projection television.
DLP, along with LCD and LCoS, are the current display technologies behind rear-projection television, having supplanted CRT rear projectors. These rear-projection technologies compete against LCD and plasma flat panel displays in the HDTV market.[1]
DLP is also one of the leading technologies used in digital cinema projection.
Source- Wikipedia
5. Pico projector
A handheld device that works as a projector
Source – Answers.com
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