Introduction To 60 Rear Projection Tv
Rear projection technology is becoming a new trend in the wide screen television manufacturing market. It is a method of presenting a large display area by projecting the picture onto a screen. Unlike front projection, it projects the images into a mirror and through a series of lenses that put the image onto a screen in front of the viewers. They display images on the back of a screen rather than the front, and the projector is completely inside the television itself. Traditional projectors have the demerit due to light infiltration in the projection, so that the image is washed out before produced on the screen. But in rear projection, all elements are enclosed and hence there is no chance that light can affect the projection process. This can be beneficial when television is placed in a living room with large windows where there is no control on ambient light.
What is in rear projection process?
There are mainly five elements involved in the process namely projection technology, the screen, lenses, mirrors, and the box. The projection technologies can be Cathode Ray Tube (CRT), Liquid Crystal Display (LCD), or Digital Light Processing (DLP). The projection lenses are used to magnify the projected image by maintaining shape and brightness integrity of the image. They can also manage the high temperature variations due to internal and external factors. There are two elements in the screen. First the inner Fresnel surface magnifies and disperses the brightness of the image along the screen. Second the outer Lenticular surface improves the final shape integrity, contrast and viewing angle of the image. A mirror is placed in the path of the projection element to make the image larger for accurate and correct view by magnifying the lenses and the screen. The box is used to combine all the above elements into a single unit.
60 inch rear projection TV
Larger CRT-based rear projection TVs are cheaper as they heavier and bigger. A 60" CRT-based rear projection weighs in at almost 500 lbs. The leaner LCD- or DLP-based rear projection TVs with 60" viewing area weigh less than 200 lbs. The depth of CRT rear projectors is improved recently but still requires the most space on the floor. A new 60" rear projection TV is a foot thick - considerably thin compared to the standard of just a few years ago. But some DLP rear-projection products are just eight inches thick in the middle. These can include additional features. For example, a native pixel resolution 1920X1080 with 1080p compatibility, 10,000:1 contrast ratio, a fast 2.5 second response time, integrated HDTV tuner, composite, S-video, HD-component, HDMI, and PC monitor inputs.
Conclusion
60" rear projections require a big room for correct view. These are most affordable big screen TVs and used mostly as home theater systems. The factors to be considered are viewing angles and also the cost.
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