Saturday, November 26, 2011

UHP Technology Gives Longer Lasting Performance For Projector Lamps

!±8± UHP Technology Gives Longer Lasting Performance For Projector Lamps

If you have a projector, chances are that you have struggled with finding the projector lamp that will best suit your needs. You want a lamp that not only produces a great picture, but also will last for a long time. Fortunately, technology has created the ultra high performance (UHP) lamp, which gives projector owners the best of both worlds. They can get a lamp that performs as they want it to, and it also lasts longer than traditional lamps.

This technology gives users many things that they cannot receive with traditional lamps. First, they are able to achieve a level of brightness that had not been possible before, and they are able to do this with a compact size and design. These lamps are very powerful, but they are not bulky like some of their competitors. Because of this, users are able to get increased brightness with lighter and more mobile projectors, which can be very appealing to people who want to be able to easily transport their equipment.

Another benefit when using UHP lamps is that they allow your projector to run without making as much noise. If you have ever been disturbed by the noises that come from your projector, this could be the solution for you. Projectors have purer audio than television sets, but this can often be masked by the whirring noise that they make. Audiophiles can enjoy the pureness of sound that a projector offers without the distracting noises when they invest in a UHP lamp.

Also, they do not get as hot as traditional lamps, and that lack of heat is passed onto the projector itself. These lamps do not rely on as high of wattage in order to run, so they are able to stay cooler, which can keep problems such as overheating from occurring. That allows for the projector and the lamp to stay in better condition. Users do not have to constantly check the projector to make sure that it is cool enough, which is another benefit to this technology. Instead of worrying about the temperature of the projector, uses can concentrate on their movies.

This technology can also save people money. The technology allows for lamps to last longer. Because users do not have to spend as much money on replacement lamps, they are able to run their projectors for less money than those who own traditional lamps. Also, these types of lamps are less of a hassle. It can be frustrating when lamps do not last as long as they are supposed to, and that problem is dramatically decreased with these types of lamps.

If you are looking for a solution to your lamp problem, you might want to consider trying a UHP lamp. You will get to see a different kind of technology and you will discover the benefits of that technology first hand.

UHP Technology Gives Longer Lasting Performance For Projector Lamps

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Friday, November 18, 2011

Hitachi Projection TV Repair

!±8± Hitachi Projection TV Repair

A television that is able to magnify a small image to a viewable screen from a video signal using a projector is called projection television. The image is projected to a much larger size by the use of a bright beam of light and a lens system. The television that uses a separate projector and placed in front of the screen is called front-projection television. The one that has a projector located inside the box projecting images from behind the screen is referred to as rear-projection television. There are several different kinds of projection televisions determined by the projector type, as well as how the image is created before projection. They can be categorized as follows:

LCD projector

For the liquid crystal display LCD projector to display images, light from the metal halide lamp is sent through a prism that divides this light into three poly silicone panels of red, blue and green signal components of the video. Individual pixels are opened allowing light to go through, or closed to stop the light as the polarized light goes through the panels that are made up of the polarizer, analyzer and LCD panel. A wide range of colors and shades in the image are produced through the combination of closing and opening of the pixels. To get an ideal color temperature and a broader color spectrum, metal halide lamps are used. Apart from giving a broad color spectrum, the metal halide lamps have the capability to emit a lot of light in a very small area.

CRT projector

By firing a beam of electrons onto a phosphor-coated screen, the small CRT projector is able to create an image just the same way a traditional CRT television does. There are several ways to arrange the CRT. One is by using a tube coated with three phosphor coatings i.e. blue red and green. The other is by spinning a color wheel in the case of a black and white tube. The last option is the using of three CRTs; one blue, one green, and one red.

Pros And Cons For CRT Projectors

The Hitachi projector television is made of a CRT type of projector which has its own advantages as well as disadvantages compared to other types of projectors such as LCD models. The CRT projector has the following advantages: the CRT projector is able to display varying resolutions since it's not restricted to fixed pixel resolutions. It also has the ability to get a great black level as well as contrast ratio. The CRT projector also happens to have longer life spans compared to LCD models and can achieve brilliant color reproduction. As much as CRT projectors have several advantages compared to their LCD counterparts, there are a few disadvantages too. These include: since CRT is phosphor-based it is prone to burn-in. Depth-wise, the CRT projector is quite large and heavy, and has focus problems unlike the LCD projector that is quite the opposite. Also, to maintain color and brightness balance the other two CRTs have to be replaced even if only one fails.

Pros And Cons For LCD Projectors

As far as the LCD projector is concerned, it is much smaller than the CRT projectors. It is also quite easy to replace or repair an LCD chip compared to the CRT and it's not prone to burn-in, unlike the CRT. The individual pixels are visible on the large screen making it look like the viewer is looking through the screen. There are high chances of defective pixels. It has fewer viewing angles than CRT.