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Product Id: 59.01.009.46
Quick OverviewModel - BenQ LW820ST
The World’s No.1 DLP brand BenQ leads the way with futureproof interactive projectors, featuring innovative BlueCoreTM laser technology and superior dustproofing design for superb picture quality and maintenance-free operation. Maximizing education investment and collaborative learning with short throw projection, BenQ LX820ST / LW820ST utilize the unparalleled qualities of a laser light source to achieve optimized performance, long-lasting reliability, energy efficiency and environmentally friendly choice for the leading school.
Powerful BlueCore laser projectors employ dual color wheel systems to unleash outstanding color performance by increasing color ratios and purity of RGBY color, greatly enhancing color saturation and brilliancy at the same lumen output of lamp-based projectors to deliver superior viewing experiences.
Zero-deviation alignment of BlueCore laser diodes boost luminous flux into the light tunnel, improving light efficacy to 3,600 lumens.
Dual synchronized BlueCore color wheels utilize an additive yellow segment, stimulating precise RGBY spectra for optimal chromatic performance.
Comprising over two million micromirrors that reflect pure light through the color wheel, the DLP chip is hermetically sealed to resist heat for over 100,000 hours without degradation.
BenQ LW820ST is designed with Dust GuardTM technology including sealed laser modules to protect the laser bank. This lock-and-key design hermetically seals the laser engine from dust* to prolong projector lifespan.The design has passed the dust chamber test standard for the international dustproof rating of IP5X.
With a fully enclosed laser light source and an innovative sealed engine design powered by BenQ Dust GuardTM technology, BlueCore education projectors guarantee 20,000 hours of maintenance-free operation to prevent extra expenses on lamp replacement and maintenance. The laser light source resists brightness decay, making BenQ laser education projectors highly stable while ensuring high brightness performance through years of usage.
Incorporating color wheel sensors with an ingenious anti-dust accumulation feature, LW820ST prolongs optimal performance by rejecting dust which can accumulate on traditional sensors to block the IR signal and cause flickering, abnormal colors, or even shutdown.
LW820ST’s powerful BlueCoreTM laser projection utilizes a dual color wheel system to produce outstanding color performance by increasing color ratios and purity of RGBY colors, greatly enhancing color saturation and brilliancy at the same lumen output of lamp-based projectors to deliver superior viewing experiences.
LW820ST produces 3,600 ANSI lumens and superior brightness efficiency, at the same level as IFPs for clear, sharp images and text even in large, bright classrooms with lights kept on during lessons. LW820ST’s Custom Brightness function also allows manual light output adjustments in 1% increments to precisely control projection brightness to fit ambient lighting and conserve energy, as well as providing perfect edge blending for multiple projector applications.
LW820ST laser projectors create strikingly clear images with stratospherically high native contrast ratio of 100,000:1 for true deep blacks, vividly rich colors, and fine subtle details. LW820ST also features spontaneous response, requiring no wait to turn on or resume from blanking in true black for flexible performance capability.
BenQ BlueCoreTM education projectors can be turned on and off instantly to significantly reduce setup time compared to other lamp-based projectors.
With a fully sealed laser light source and an innovative sealed laser engine design, BenQ BlueCoreTM laser education projectors deliver 20,000 hours of maintenance-free operation, preventing extra expenses on lamp replacement and maintenance. The laser light source resists color and brightness decay over time, offering significantly more reliable performance after a period of operation.
Offering a big screen in short distances with a 0.49 short-throw ratio, LW820ST eliminates distracting shadows and glare for students and teachers to engage and collaborate freely in front of the board.
BenQ education projectors offer a range of resolutions and projected image sizes to meet diverse classroom needs. Featuring crisp image quality up to 100 inches, BlueCore short throw education projectors deliver increased classroom versatility at reduced costs.
Model - BenQ LW820ST, Category - Business & Education Projectors, Type - Short-Throw Laser Projector, Throw Ratio - 0.52, Resolution - WXGA (1280 x 800), Max. Supported Resolution - VGA (640 x 480) to WUXGA_RB (1920 x 1200), Contrast Ratio - 3,000,000:1, Native Aspect Ratio - 16:10, Zoom Ratio - Fixed, Light Output (lumens) - 3600 Lumens, Light Source Life (Hours) - 20000 Hours (min), Chip Size - 0.65 Inch DC3 DMD Chip, Display Type - Single chip DLP, I/O Ports - HDMI-1 x1, HDMI-2/MHL x1, PC (D-sub 15pin) x2, Monitor out (D-sub 15pin,Female) x1, Composite Video in (RCA) x1, S-Video in x1, Audio in(mini jack) x1, Audio L/R in (RCA) x1, Microphone in (Mini jack) x1, Audio out (mini jack) x1, LAN Port(RJ45 for Network ) x1, RS232 In (D-sub 9pin, male) x1, USB TypeA (5V,1.5A) x1, USB Type mini B (For service) x1, IR Receiver(Front/Top) x2, Keystone Correction - +-30 degrees Vertical, Speaker - 10Watt x 1, Video Compatibility - NTSC, PAL, SECAM, Power Source/ Power Consumption - 100 - 240V AC, Max 320W. Normal 283W. Eco 234W. (Power Consumption), Features - Blank for True Black, Digital zoom(2x), Digital Shrink(0.75x), LAN Control, AMX/ PJ Link/Crestron/Extron IPL Compatible. MDA Compatibility Optional Wireless Display, Optional Interactive module (PW02, PT12) compatibility.Optional Dust Filter, Weight - 5.6Kg, Others - Display Color???: 1.07 Billion Colors, Light Source: Laser, Lens Control: Manual Focus, Projection Offset: 106.1 +/- 2.5%, Projection Size: 60 Inch-120 Inch, Security: Kensington Lock, Horizontal Frequency: 15KHz-102KHz, Vertical Scan Rate: 23 - 120Hz, HDTV Compatibility: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p, Dimensions: 410 x 158 x 272mm, Noise Level (Normal/Eco): 33/29 dBA (without dust filter), Specialty - TURNING A NEW PAGE IN EDUCATION, SHARING, COLLABORATING AND INTERACTING, Uninterrupted Learning Through Long-Lasting Projection, BlueCore Laser Projector with Short Throw, WXGA, Creating Lasting Lessons with Striking Picture Quality, BenQ BlueCore Laser Technology Laser Technology for Pure Color, Superior Bright, Superior Performance, Superior Durability, Precision-Aligned High-Output Laser Source, Secondary Yellow-Infused Color Wheel, Hermetically Sealed DLP Chip, Superior Dustproofing Design to Prolong Projector Lifespan, Sealed Engine for Laser Light Source, Anti-Dust Accumulation Sensor Resists Dust Buildup, Brilliant Display of Lecture Content, Long Lasting High Brightness, Laser-Enabled Ultra-High Contrast, Package Contents - Power Cord 3m (by region), Remote Control for WW RCE015 (5J.JJF06.001), Remote Control for J sku RCE013J (5J.JGS06.001), AAA Batteryx2, VGA cable 1.8m, Warranty Card (by region), QSG (4J.JJJ01.001), User Manual CD (5B.JJJ01.001), Necessary Accessories (Not Included) - 1. Projector Screen: 115.676.01 Super View 70x70 Inch Tripod Projector Screen, 2. Ceiling Mount Kits: 130.761.69 K2 Ceiling Mount Kits White Color For Multimedia Projector (Height Adjustable 15 Inch Normally & 11 Inch Expandable), 3. HDMI Cable: 61.471.12 Havit HDMI Male to Male 5 Meter Cable, 4. Wireless Presenter: 71.760.01 Micropack WPM-06 Black Pocket Wireless Presenter, 5. Wireless Display Adapter: 44.761.04 K2 Miracast Measy A2W HDMI Portable Wireless Display Adapter, Accessories (Optional) - Wall mount WM06G3 (5J.J4R10.011), 3D Glasses (5J.J9H25.002), Wireless Dongle: QCast Mirror (5A.JH328.10X), Wireless Dongle: QCast (5J.JCK28.X01), Dust Filter (5J.JJF14.001), Warranty - 2 year (Lamp 365 Days/1000 Hours Which One Comes First), Country of Origin - Taiwan, Made in/ Assemble - China
Projectors have long been used as a presentation tool in business and commercial entertainment, as well as in some very high-end home theater systems. However, projectors are becoming more available and affordable for the average consumer. If you are looking for one, here are a few things you need to take into consideration when looking for a projector for your business or home setup.
The first thing you should take into consideration is the kind of content you want to show on the projector. Most business projectors are going to be used for a series of still images. If you're thinking about PowerPoint presentations and bar charts, then look in the business category. The home projector category is going to handle full motion video a lot better. If you want to play movies or games, make sure that your chosen projector can handle them.
Indoor vs. Outdoor
For the most part, if you want to use a projector outdoors, you need better quality all-round. You want the highest brightness, because you have less control over the ambient light, you want a high resolution and contrast ratio to boost your chances of a great picture, and you'll need a good screen or surface, and a decent sound system. One thing that might be more of a concern with an indoor projector is the noise it makes when operating, because that's going to be more noticeable in a small room, but beyond that a good outdoor projector will work well indoors too.
You should check out the reviews for your prospective projectors carefully and make sure that you get a reliable model. You'll often see a lamp life rating, estimating the maximum hours you'll get before needing to replace the bulb. Obviously the higher that is, the better your chances of it lasting a longer time. You should also check out the cost of replacement bulbs and other parts, and get an idea of how easy it will be to maintain and repair, should you need to.
If you're planning to install your projector in a fixed position, for something like a home theater, then you don't really have to worry about portability at all. If you plan on traveling around, using it for business presentations, then you'll want something that's as small as possible.
Zoom Range and Lens Shift
You should also consider the zoom range and lens shift capabilities carefully if you think you'll be using your projector in a variety of different environments, because these features will allow you to change the throw distance and alter the size and position of what you're projecting. Short throw projectors can be used in tight spaces and small rooms, whereas you'll need a long-throw lens if you want to use a projector in a theater or a very large space.
The aspect ratio is the shape of the video image you are projecting and it's really all about the source material. A standard TV has an aspect ratio of 4:3, while HDTV, widescreen DVD, and Blu-Ray content is 16:9 or closer to it. Most modern projectors are 16:9.
If you're using it for presentations then you can save money by going with a relatively low resolution, for example, SVGA is 800 x 600 pixels and will serve adequately. It really depends on the input material, so if you want to show HD movies and play games, you'll want a resolution of at least 1920 x 1080 pixels. If you're going to mix and match content, don't assume that a higher resolution projector will handle lower resolution content well, you really have to check. You can get 4K projectors, but you'll have to pay a premium, and there's a lack of 4K content right now.
The brightness you need depends on the environment where you'll be using the projector. The darker the environment is, the lower the brightness you can get away with, but, as a general rule, the brighter your projector is, the better. You'll find that brightness is measured in lumens. A rating of 1,000 lumens or less might be perfectly adequate for a business projector, to be used in small, darkened rooms. For a movie projector in an environment with some ambient light you might want a rating of 5,000 lumens or more.
This tells you the difference between the darkest and the brightest parts of the picture. The higher the contrast ratio, the better the picture will look. But lots of other factors, such as ambient light and screen quality will come into play here, so you can't rely on this spec alone.
The Right Technology
The vast majority of projectors on the market are going to be DLP (Digital Light Processing) or LCD (Liquid Crystal Display). DLP projectors have more moving parts and can suffer from the rainbow effect, because they use a spinning color wheel. LCD projectors are more reliable, but they tend to be a bit heavier. If you can afford to spend a bit more then another technology, called LCoS (Liquid Crystal on Silicone) will deliver the best quality images, but LCOS projectors tend to be comparatively heavy and expensive.
Projectors generally always have VGA ports, and you might find a range of other options, but if you're using it for games and movies then you'll want an HDMI port. A useful option for some people, especially in the business world, is a USB port that can handle a flash drive, because it's a handy way to carry a presentation.
Wi-Fi support can be very useful for streaming from all sorts of modern devices, so you don't have to plug in directly. For fixed projectors, an Ethernet port can be a really good idea, because it allows you to operate the projector online and it will be more reliable than Wi-Fi.