These Slides And Films Were Of A Semi-transparent Material So That Light Can Pass Through Thereby Projecting The Images On These Materials. These Slide Projectors Were Used For Educational Purposes And Business Presentations. For Some Time, One Had To Make Do Of Such Slide Projectors. But With New Technologies Introducing Innovations To The Projector Industry, Along Came The Digital Projectors.The Use Of Digital Projectors Has Become Very Popular. With Digital Projectors, The Images Come From The Computer Through The Lens On To A Screen. The First Digital Projectors Were Actually The Eidophor Projectors. It Is Now No Longer Used Though With The Advent Of Newer Technology. It Involved The Use Of An Oily Surface, And A Rotating Disk With Light Passing Through It. Another Technology Is The CRT Digital Projectors. The CRT Types Come In 3 Configurations. The First Configuration Is Having One RGB Color Tube With A Single Lens. Another Is Having One Black-and-white Color Tube With A Rotating Color Wheel. The Last Of The Configuration Is Having Three RGB Color Tubes With Three Lenses. These Projectors Are Usually Bulky, And On Most Cases, Would Be Suitable For Fixed Locations. Then There Are The LCD Digital Projectors, Which Are Capable Of Clear Displays. It Is Well Known For Its Portability And Ease Of Use. It Has A High Image Resolution, With Its Brightness And Contrast Easily Adjustable As Well. It Has Gain Popularity In Academic Settings, And In Office Presentations. There Is Another Class Of Digital Projectors - Those That Use The DLP Technology. These Use Tiny Mirrors To Control The Light Passing Thru To Form The Images. This DLP Scheme Is A Proprietary Technology Of Texas Instruments. With The DLP Technology, The Tiny Mirrors Play The Key Role In Projecting The Images. Each Mirror Represents One Pixel. Each Mirror Will Move Back And Forth Affecting The Shade Of Each Pixel. Colors Are Obtained From A Rotating Wheel With Red, Green, And Blue Filters. As Of The Moment, User Preference Is Divided To Either LCD Or DLP Projectors. There Is No One Best Projector Technology. Each Has Its Own Advantages And Disadvantages. LCD Digital Projectors Are Strong In Its Color Fidelity, Color Saturation And Sharpness Of Data Display. The DLP Projectors Are Known For Its Color, Contrast And Image Stability. It All Boils Down To What You Need It For, And Base Your Projector Of Choice To That.
