Articles
Newsletters
Home 
Internet Technologies The Significant Presence In The Video Technology
Internet Technologies The Significant Presence In The Video Technology
| The Significant Presence In The Video Technology |
 |
 |
 |
| Written by Anca Vitalis |
| Tuesday, 17 November 2009 09:00 |
|
When the talk starts about the two major video projection technologies - LCD and DLP most people looking to buy a projector know the differences between the two. But a third technology that emerges is one worthy of attention producing high quality video images that overpower LCD and DLP. It is called LCOS and deserves our attention. LCD uses liquid crystals one for every pixel. The light goes through them on its way to the lenses and it in modulated by the liquid crystals that it is traversing. It is a transitive technology. The DLP uses microscopic mirrors, one for every pixel reflecting the light. This is a modulating technology and it is reflexive. LCOS is a combination from these two technologies. Mainly it is a reflexive technology using liquid crystals instead of individual mirrors. At LCOS, the liquid crystals are applied on a reflexive, mirror like, type layer. As the crystals open and close the light is reflected but not towards the mirror they are applied on. This is how the image is created. The LCOS projectors are using mainly 3 chips one for the modulation of the light on the channels red, green and blue. Similar to LCD, LCOS projects the red, green and blue components simultaneously. The rotating disc from DLP technology is absent. The LCOS technology has a very high resolution and naturally is more expensive than the majority of LCD or DLP products. There are no SVGA resolutions at LCOS projectors and seldom XGA equipments. Generally the LCOS projectors come with SXGA (1365x 1024) technologies or higher and that is why, by definition, they are not cheap. So, due to the high resolution and the large dimension, the LCOS technology was not adapted for the slender, portable video projectors. The LCD and DLP projectors are presently selling in large quantities and are the best sold options for mobile, educational and Home Theater usage; this is the reason for which they are enjoying a higher attention. Because LCOS is not sold in similar quantities many people believe it is not that good. This is not correct at all. Many well informed video-fans looking for elegant solutions in home theaters are choosing the LCOS technology due to those characteristics that neither LCS nor DLP can use. Kindly provided by MoneyHunter.org You are welcome to use this article on your own website, if you include the link just before this text. |
Members : 2608
Content : 2691
Web Links : 1
Content View Hits : 255903
Content : 2691
Web Links : 1
Content View Hits : 255903