NEC NP-P451W Protocol Document

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You can still buy an overhead projector but it

if you want a crowded auditorium to see what

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determine

features with the desired

images and increases brightness at a cost that can be less than buying

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Portable Projectors Slim Down, Get Bright

Dec 20, 2013

by Art Kingdom

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Anyone old enough to have volunteered to help their teacher avoid fumbling with 16mm film or overhead projectors likely marvels at today’s portable projectors that come complete with an amazing amount of technology in a surprisingly small and easy-to-use package.

What we considered portable projectors 15 years ago weighed 20 lbs.,” said Richard McPherson, NEC senior product manager for projectors. “Now, portable can be an 8-lb. projector or much less.”

probably makes more sense to take advantage of the latest advances, especially you are presenting.

You need a larger screen too because you need to spread that information out so that everybody can see it,” said McPherson, “Today’s projectors are made to accommodate a large screen.”

Portable projectors can fit into a shirt pocket or be large enough that it is probably better if it is permanently installed. They can, among other things, connect to wireless networks or project data and images from smart phones and tablets. Low-cost operation and maintenance have become key features and important selling points.

Computers, and the need for different resolutions as-well-as more complicated content, have driven much of the advancements in features found in today’s projectors,” said McPherson, “The more content the greater the need for higher resolution.”

BRIGHTNESS AND RESOLUTION

Casio XJ-H2650

McPherson advises that clients base their buying decisions on a projector’s brightness, resolution and versatility. This includes the ability to change projector lenses as necessary. Also, buyers should how the projector will most frequently be used in order to match price point.

Other potential features include edge-blending and stacking capabilities. Edge-blending allows the use of multiple projectors to produce a massive image on a screen without discernible lines between video segments. Stacking uses multiple projectors with software that overlaps single a single projector with higher light output.

Depending the situation, they may need three projectors one day and only need one the next,” said McPherson

Projectors used in small, well-lit venues can use projectors with moderate brightness. Larger rooms need even greater light output.

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“If you’re looking at a specific

different lenses to support any of

matched to the output resolution

1,280x800 pixels) and a brightness of 300 lumens. An

ratios, HDMI and VGA, as well as

professional high brightness

The P451W helps avoid unnecessary installation costs

connectivity with security protocols

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classroom or lecture hall, you may need to place that projector in the back of the room or in a projection booth or maybe a rear

-projection application is best,” said McPherson, “We have

these applications.”

The prospective projector’s native resolution should be

Epson Powerlite 1835

of the device that will most often be connected, such as a laptop computer. XGA (Extended Graphics Array, 1,024x768 pixels) should be acceptable for PowerPoint and that will save money. Super Extended Graphics Array (SXGA, 1,280x1024 pixels) is considered the best for detailed images, although 1080p HD video will obviously require more pixels. Another thing to consider is that a higher native resolution projector can display both high- and low-resolution images, while a low native resolution projector may be able to show higher-resolution images, but will usually have distortion or artifacts.

CARRY THAT WEIGHT

Users should consider how often they plan to carry their portable projector to different locations. Clearly, weight and overall size are important factors in portability, but keep in mind that a smaller, lighter projector may cost more.

An example of a small but full-feature projector is the LED Aaxa KP-600-01. At just 1.3 lbs., it can fit into a lap-top case and has a lamp life of 15,000 hours. The KP-600-01 is DLP and features WXGA (wide XGA, optional battery provides more than 75 hours of power.

Hitachi CP-WX3030WN

The KP-600-01 has built-in speakers, 4:3 and 16:9 aspect

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composite A/V connections and microSD and USB readers. USB plug-and-play allows instant set up. The projector makes an image size up to 100 inches (diagonal) in low-light conditions.

Aaxa KP-600-01

performance is required, the NEC P451W has a brightness of 4,500 lumens and is designed for screen sizes up to 140 inches. It weighs 4.1 lbs. and supports advanced connectivity with remote control and monitoring over both wired and an optional wireless network. The P451W’s lamp-life is rated at 6,000 hours.

1.7x, as well as vertical lens shift plus vertical and horizontal keystone correction. Lens shift is the ability to move the projector image up or down, left or right while keeping the projector stationary. Vertical and horizontal keystone correction centers the projected image on the screen wherever the projector is located. A manual wall color correction function rounds out the P451W’s ease-of-use features.

The P451W offers a free promotional DisplayNote presenter license to share, present, and collaborate with multiple participants across multiple devices (

Brightness is a key feature of the Epson PowerLite 1965, which features 3 LCD primary color chips that yield a brightness spec of 5,000 lumens. It has multiple remote control and management functions, as well as nearly a dozen interfaces.

Interfaces for the PowerLite 1965 include WiFi network for use with smart phones and mobile computing, and HDMI. The 1965 has vertical and

Larger in size and meant for midto-large meeting rooms where semi-

with an optical zoom capability of

displaynote-nec.com

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