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Projector Lamp Articles

Epson's PowerLite X39 Projector Offers High Quality, Low Cost for Classrooms

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Schools and universities looking for a low cost classroom projector that provides excellent brightness and contrast for typical classroom ambient light conditions should consider the Epson PowerLite X39. Current street price is less than $450. The PowerLite X39, optimized for text document display, features XGA 1024 x 768 resolution, 3500 lumens and a dynamic contrast ratio of 15,000:1. In addition, the X39 offers 3-chip processing for excellent color accuracy. Throw distance of 3.5 feet to 29.6 feet will meet the requirements of most classroom settings and produce image sizes ranging from 30 inches to 300 inches diagonal. While the X39...

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Projector Lamp Mode Settings Can Have Significant Impact on Lamp Life

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Extending lamp life by smart operator use of features provided in the projector settings, can reduce the frequency of buying replacement lamps  - saving on both the purchase price of the new lamp and the staff time and hassle factor of replacement. The major lamp manufacturers - Philips, Osram, Ushio, Panasonic, Iwasaki, Phoenix - have improved the lamp technology such that new lamps can now deliver 4000 hours or more even when operated at full power 100% of the time. However, the projector manufacturers have been just as important in helping extend lamp life with built-in, operator controlled settings that allow modulating brightness to meet...

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Projector Replacement Lamps: A Quick Guide to Help You Know What Your are Buying

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Projector replacement lamp marketing is a circus of confusion for the customer. Sellers of projector lamps stretch the limits of language to present their lamps in the best possible light.  "Genuine original lamp" "High quality lamp" "Compatible replacement lamp" "Original lamp inside" "OEM compatible" "High quality bulb inside" "Made from original parts" "OEM lamp" "OEM lamp module" "Factory original module" Each of these phrases may accurately describe what the customer is buying. The problem for the customer is that for a given projector model (eg. Epson EH-TW9000) there are several "replacement lamps" that will work for the projector, but each of the options has...

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The Best Projector Lamps Are Manufactured by a Few Experienced Companies

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Ultra-high-performance projection lamps are more than just another component in today’s LCD / DLP digital projector universe. These high pressure lamps, the original invented by Philips in 1994, are the critical factor in the quality of image projected for the viewer. Whether it’s video or data, without a quality lamp, images intended to teach, sell or motivate will fall short - no matter how many bells and whistles come with the projector. Projector manufacturers work with Philips, Osram, Iwasaki, Panasonic, Ushio or Phoenix - the six premier projector lamp manufacturers - to produce that lamp that meets the specific needs...

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Highly Rated Sony VPL-DX221 Projector for Business & Classrooms Features a 10,000 Hour Lamp

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The highly affordable Sony VPL-DX221 classroom and meeting room projector, released 17 months ago, now (in January 2019) ranks as one the top XGA class projectors for schools and businesses. The VPL-DX221 is attractive because it combines ease of use, excellent picture quality and low ownership costs, including a long life lamp. XGA (1024 x 768) resolution provides plenty of fine detail; useful for making presentations direct from a laptop or tablet. Designed as a light weight, workhorse projector, the VPL-DX221 offers 2800 lumens of brightness and a 4,000:1 contrast ratio, sufficient to produce clear images in rooms with some...

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"OEM" - The Smoke and Mirrors of Projector Lamp Module Sales

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The language being used to describe the replacement light source for digital projectors is a case study in sales talk often meant to confuse rather than clarify. Here is an example from the web site of a reseller: “We carry 4 versions of the Optoma EW531 Lamp. There are 3 OEM versions: the OEM lamp directly from the bulb manufacturer of the original lamp included with this projector, the same OEM lamp sold by Optoma, and an OEM compatible version from another OEM bulb manufacturer, but not the original manufacturer for this model. We also sell an economically priced compatible...

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Footlamberts: What and Why?

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A footlambert (or foot-lambert) is a unit of luminance. It is used primarily in the projection industry to provide a value for luminance of images on a projection screen. 1 footlambert (fL) is equal to 3.43 candela per square meter (cd/m2). When the footlambert value is known for a projection system (the projector and a screen), assumptions can be made about the clarity of images when viewed with varying ambient light levels in a room. To calculate the footlamberts on a screen you need the following units: Projector Lumens Screen Gain Screen Width Screen Height Use online calculators to get...

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Laser vs. Lamp Projectors: What to Consider When Making a Purchase Decision

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With an increase in the number of laser projectors on the market, everyone from industry professionals to armchair bloggers seem to be weighing in on the pros and cons of laser versus lamp digital projection. With 2019 here, it seems like a good time to compare the specs, review the arguments, and attempt to provide a basic decision guide for anyone buying a projector for commercial or institutional applications. Compare The Specs Light Source Rated Life Lamp:3000 to 5000 hours at full power (5000 to 8000 hours at eco, reduced power). Replacement lamps are available. Laser: 16,000 to 20,000 hours...

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Sony VPL-EW575 Compact Projector Offers High Brightness For Conference Room Presentations

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The Sony VPL-EW575, a compact desktop projector designed for conference room applications, provides exceptional brightness and contrast to meet the needs of business presentations. Released in May 2017, this WXGA, 1280x800 projector produces 4300 lumens (2400 lumens in ECO mode) for strong image clarity even with ambient light in the room. The VPL-EW575 includes a color/white balance setting that allows tweaking for crisper images and enhanced color rendition. In addition the VPL-EW578 connectivity options support HDBaseT with dual HDMI ports and Direct USB Display connection. Both networked and wireless presentations are possible with PC or Mac. Other specifications include: Display...

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Ambient Light Reflective Screens Help Maintain Image Quality in Spaces with Extraneous Light

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When buying a projector - whether for a classroom, conference room or sports bar - “brightness” will certainly be one of the specifications at the top of the list to consider. However, it's not only the projector that determines the perception of brightness for the viewer. While the lumen output of the projector is a key variable, the reflective properties of the screen have a significant bearing on how “bright” the images appear. In addition, for spaces where blocking ambient light is either not possible or not desirable (eg. some light may be necessary for note taking in a classroom),...

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