• Bright 5mw beam is 50 times brighter than Red lasers
• Rugged construction
• Uses inexpensive AAA batteries (included)

Green laser pointers are brighter (about 60 times) than a red laser pointer. Human eye is more sensitive to green color and this laser pointer is much more noticeable than other light color,so this pointer is a Professional tool for astronomers, lectures, etc. Use your laser pointer to point at any desired targets on projection screens, video monitors, presentation graphics and more.

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List Price: $ 159.00

Price: $ 5.95

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While most manufacturers are focusing on more expensive plasma and flat screen technology, there are still a few, like Samsung and Mitsubishi, that are making these high-quality, lower-cost alternatives.

rear projection
Samsung is one of the most renowned brands for rear projection television sets these days. Their 2008 line of Samsung Digital Light Processing HDTVs are noted for their excellent picture performance, wide range of features, connectivity options and reasonable price.

At 17.8 inches deep, these TVs are slim for rear projection televisions ranging between 50 and 72 inches tall. The Series 6 DLP HDTV comes with a handsome casing with hidden speakers, but also lets you connect USB cables and a number of AV cables to its extended connectivity suite. You’ll get a 2500:1 contrast ratio with the Series 6, but the 7 and 8 Series boast an impressive 10,000:1.

Samsung 7′s new Cinema Pure Color Engine is powered by a 2.4 LED light source (rather than the traditional projector lamp bulb), so instead of lasting 2,000 hours, you’re good for 60,000 hours of watching. The brightness is 40% better compared to previous models and the Samsung brand in general holds its own against competitors like Mitsubishi and Panasonic, including projection screens.

projector screen
Even so, many consumers love Mitsubishi’s top-selling rear projection, the 60-inch, WD-60735 model 1080p DLP HDTV. Sizes for this top rear projector TV manufacturer range from 60 inch to 73 inch, just a bit larger than Samsung’s line, and the ultra-slim cabinet and bezel are similar. Aside from its appealing appearance, the Mitsubishi models employ technology aimed at reducing motion blur and creating crisper, sharper images.

There are a number of connectivity options and also a wide range of controls that allow you to adjust six colors of tint, as well as the brightness and contrast. These rear projection televisions are a bit more extensive but the WD-835 Diamond Series has been received very well by consumers.

video projection
Economically, rear projection TVs make sense compared to their more expensive LCD flat panel or plasma screen counterparts. Generally speaking, rear projection televisions are the best way to get the largest screen for the least amount of money. For instance, the 50-inch Samsung HL50A650 rear projection (1080p HDTV) costs just under $1,000.

A plasma HDTV of the same size and quality would cost around $5000 or more. Although the price differential is even more impressive when you look at the larger models, you can expect to pay thousands more for LCD flat panel TV sets over a rear projection TV.

Also, projection screens fit up against the wall and maximizes more space in a room, and the screen and projector won’t mess with the acoustics in your room like a big clunky television set might, so your home theater will be perfectly calibrated with this type of system. Here are some factors to consider when shopping for that perfect, home theater projector.

digital projector
One point to consider when looking at projectors is what aspect ratio do you want? “Aspect ratio” refers to the shape of the video image. For instance, most TV sets have aspect ratios of 4:3 (4 units wide, 3 units high), whereas HDTV standard models have an aspect ration of 16:9 (16 units wide, 9 units high).

If you view a lot of classic films or DVD TV series, then a 4:3 configuration may be preferable to you; it’s easy to shrink a larger picture down, with black borders to account for any discrepancies. However, most home video projectors are being marketed in the 16:9 ratio. If you watch a lot of HDTV or wide screen DVD, then a 16:9 ratio makes sense.

The one drawback is that viewing 4:3 content on this massive unit will make the display look tiny and even if you stretch the frame to fit the screen, the resolution won’t be as good. There is yet a third choice for wide screen movie aficionados; the 2.35:1.

projection screens
For instance, Lord of the Rings, Tombstone and Star Wars are all set wider than 16:9. A “constant image height” setup can stretch the image out to its ideal size, although you will need to purchase a 16:9 digital projector along with an expensive anamorphic lens to accomplish this task.

Next, you’ll need to choose a resolution and brightness for your projector. Resolution refers to the clarity of the picture and it can be as low as 854 x 480 or as high as 1920 x 1080, although most consumers choose 1280 x 720, which lets you view HDTV and Blu Ray discs perfectly. When considering projector lamp brightness, be aware that brighter is not better.

Brightness is measured in ANSI lumen rating and foot-lamberts. In a dark room, luminance of 12-22 fL will provide comfortable brightness for you. If you still have some ambient light filtering into the room, then screen luminance of 30-50 fL will compensate for any loss of contrast due to the room’s natural lighting.

The most high-end format on the market is the 1920 x 1080, which doesn’t require any scaling and gives you the sharpest picture, with virtually no pixel shape visible.

theater projectors
Lastly, you’ll want to check out contrast specifications for your home theater projector. The bare bones contrast level is 2000:1, which is just enough black level and color saturation to avoid a muddled picture. Many consumers have a 5000:1 projector, which provides good definition on a midrange unit.

For top-of-the-line color saturation and definition, you’ll want a 10,000:1 contrast for the best shadow detail. While this may sound very confusing, often times, you can get someone to come out to your house and calibrate everything just right to be sure you’re getting the most out of your home theater experience.