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Office Products

Presentation, AV, Projectors

Presentation, AV, Projectors Article

takes a video signal and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image, and most modern ones can correct any curves, blurriness, and other inconsistencies through manual settings. Video projectors are widely used for conference room presentations, classroom training, and home theatre applications.

A video projector may also be built into a cabinet with a rear-projection screen (rear-projection TV, or RPTV) to form a single unified display device, now popular for .home theater. applications.

Common display resolutions for a portable projector include SVGA (800×00 pixels), XGA (1024×68 pixels), 720p (1280×20 pixels), and 1080p (1920×080 pixels).

The cost of a device is not only determined by its resolution, but also by its light output, acoustic noise output, contrast, and other characteristics. While most modern projectors provide sufficient light for a small screen at night or under controlled lighting such as in a basement with no windows, a projector with a higher light output (measured in lumens, abbreviated .lm.) is required for a larger screen or a room with a higher amount of ambient light. A rating of 1000 to 1500 ANSI lumens or lower is suitable for smaller screens with controlled lighting or low ambient light. Between 1500 and 3000 lm is suitable for medium-sized screens with some ambient light or dimmed light. Over 3000 lm is appropriate for very large screens in a large room with no lighting control (for example, a conference room). Projected image size is important; because the total amount of light does not change, as size increases, brightness decreases. Image sizes are typically measured in linear terms, diagonally, obscuring the fact that larger images require much more light (proportional to the image area, not just the length of a side). Increasing the diagonal measure of the image by 25 % reduces the image brightness by 35 per cent; an increase of 41 per cent reduces brightness by half.

Presentation, AV, Projectors Items

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NEC Projector Case ATAPRO200 for LT200 / LT240 / LT260

$150.00
L120 Infocus Lamp DP5800/DP6800 Proxima Projector NIB!

$150.00
MEGAPHONE - 25 WATT + SIREN + SPEAKER HANDSET !!LOUD!!!

$4.99
30W Megaphone:Safety Siren:Music:Speaker Mic.- Bullhorn

$9.99
100 IBM Laser Printer/Copier Transparency Film Sheets!

$20.95
Pocket Size Sound and Music Speaker Megaphone

$7.99
Wireless Presentation Remote Powerpoint Laser Pointer

$34.99
Draper Star Manual Projection White Screen 60" Portable

$40.00
SHARP COMPUTER PROJECTION PANEL QA-1650 IN CASE EXTRAS

$9.95
NEW DALITE 84x84 GB 2.5 GAIN TRIPOD PROJECTOR SCREENS

$119.98
Portable 25 Watt Megaphone w/Microphone w/LOUD Siren

$13.50
MEGAPHONE 30 WATT W/ MICROPHONE ~ SPORTING BULL HORN

$7.99
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806

$14.28
MEGAPHONE 30 WATT W/ MICROPHONE ~ SPORTING BULL HORN

$7.99
Dukane Model 4000 Professional Overhead Projector SALE

$99.99
30W Megaphone:Safety Siren:Music:Speaker Mic.- Bullhorn

$9.99
Kodak Carousel 4400 Slide Projector Blem

$9.95
3M Overhead Projector 2000AG Carry Case

$34.95
InFocus LP70+ Super Low hours with case and remote

$455.50
3M Multimedia Projector - Overhead Projector

$201.99
3M Folding Overhead Projecter 9550 9000AJH w/WRNTY

$29.95
80" 16:9 HDTV Electric Motorized Screen Gray Fabric

$199.98
3M OVERHEAD PROJECTOR 120 VOLT 60 HZ 4.5 AMP 360 LAMP W

$39.00
200 Avery Top Load Diamond Clear Sheet Protector,Hvy Wt

$10.95
3M 313 Overhead Projector w/ Working Lamp

$19.99
3M Mixed Model, (10) Overhead Projector, 4000 lumens

$76.00
3M Overhead Projector with Case SALE NEW

$199.99
NEW Quartet Dry Erase Oak Framed 3' x 2' w/warra

$49.95
Porta-Desk 6 DRAWER PORTABLE WORKSTATION CASE w/Wheels!

$69.95
LOUD MINI MEGAPHONE ~ PORTABLE MEGA PHONE NEW

$9.95
NEW 3M Model 1711 Overhead Projector

$49.00
NEW SANYO LCD PROJECTOR HD PLC-XU87 720p/1080i DIGITAL

$699.00
DA-LITE 84x84 PORTABLE TRIPOD PROJECTOR SCREEN NEW

$103.55
NEW Marsh Kids Lapboards White Whiteboard Markerboard

$31.99
3M 9700 Overhead Projector w/WRNTY

$39.95
Tripod Projection Screen 70x70-PERFECT FOR PRESENTATION

$88.00
NEW Quartet Dry Erase Graphite Framed 30"x13" w/warrant

$89.95
3M Overhead Projecter 9080 (2800 Lumens) w/ WRNTY

$24.95
NEW Tripod Easel, telescoping anodized aluminum

$59.95
95 Gray FIXED FRAME PROJECTOR SCREEN 16:9 WIDESCREEN

$199.98
PORTABLE MEGAPHONE w/LOUD SIREN w/MICROPHONE ~500 FOOT~

$15.99
EDNALITE PROJECTION POINTER MODEL 120A

$5.00
C57i- 3M 910 Overhead Projector

$0.99
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 84" 16:9 NR!

$107.50
KODAK III AT AUTO FOCUS SLIDE PROJECTOR TRAY/REMOTE

$60.00
Xenon 35 mm Projector

$225.00
10W Megaphone / Bullhorn Music & Speaker Mic. -BULLHORN

$9.41
3M 9100 Model 9000AJB Collapsible Overhead Projector

$74.99
PANASONIC UB-2815C ELECTRONIC WHITEBOARD DAMAGED

$999.99
AverMedia AverKey Plus - VGA to TV Converter

$0.99
NEW 3M 9100 Overhead Projector - 2800 Lumens

$129.00
105 Fixed Frame Projector Screen 2.35:1 Gray Fabric

$219.99
Western safety 25 WATT SAFETY SIREN MEGAPHONE-New

$19.99
60" PLASMA SCREEN TRAVEL/SHIPPING CASE! - NEW!

$199.00
Dukane/Elmo, (Lot of 9) Assorted Overhead Projector

$9.99
250 IBM Color Laser Printer Transparency Film Sheets!

$45.95
50 IBM Color Laser Printer Transparency Film Sheets!

$19.95
3M Model 567 Overhead Projector

$39.99
Canon RE-350 Video Visualizer Presenter Document Camera

$133.50
LOUD MINI MEGAPHONE ~ PORTABLE SIZED MEGA PHONE

$0.99
3M INFRARED COLOR TRANSPARENCY FILM 1129 SEALED 100 NEW

$3.99
Digital Projection HighLite 6000DSX

$2000.00
InFocus LP1200 Projector Used

$125.00
BUHL OVERHEAD PROJECTOR MODEL 90ED

$19.95
Sim2 HT250 H. T. Multimedia Projector Top Award Winner

$500.00
3M Overhead Projector 2000AH Breifcase Portable 220v

$19.95
3M Still Picture Overhead Projector 66Cgg

$9.99
Sony VPL-PX20 Projector

$420.00
MEGAPHONE - 25 WATT + SIREN + SPEAKER HANDSET !!LOUD!!!

$4.99
New 25 Watts Portable Wireless PA System with FM Radio

$119.95
DA-LITE 70x70 HIGH GAIN (2.5) TRIPOD PROJECTOR SCREEN

$110.19
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806

$14.28
LASER POINTER with 42 DIFFERENT TIPS KEY CHAIN

$0.99
3M 9200 Overhead Projector

$29.95
3M Model 1700 Overhead Projector

$45.00
50" Plasma Case HEAVY DUTY 3/8" Plywood - Carpet Lined

$269.00
Elmo HV100XG XGA Visual Presenter

$86.00
Mimio Digital Meeting Assistant Electronic Whiteboard

$76.75
FANON SOLID MEGAPHONE MODEL MV-20S 1000 YARD RANGE

$4.99
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806

$14.28
New Lexmark Overhead Transparencies for Laser Printer

$3.01
AUCTIONEER'S POWERFUL PORTABLE BATTERY PA WIRELESS MIC

$499.95
Elmo EV-500 Video Visualizer Presenter Document Camera

$219.00
250 IBM Color Laser Printer Transparency Film Sheets!

$45.95
42" PLASMA SCREEN TRAVEL/SHIPPING CASE! - NEW!

$159.00
2 PKS 3M HIGHLAND 701 Transparency Film Transparencies

$9.99
3M 9100 Overhead Projector

$14.99
Viewlex Little Giant Filmstrip Slide Projector

$9.99
106 16:9 High Gain High Contrast Projector Screen Black

$209.99
Clarity, (Lot of 6) Remotes for Clarity Margay Cubes

$9.99
Dataton Smart-PAX QC, (1-Pair) Control Units

$41.00
MEGAPHONE 30 WATT W/ MICROPHONE ~ SPORTING BULL HORN

$7.99
3M Overhead Projector 2000AG Breifcase Portable

$34.95
NEW SHARP PROJECTION SCREEN 39" x 52"

$5.50
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC

$15.68
92" 16:9 HDTV Electric Motorized Screen Gray Fabric

$199.98
92 Fixed Projector Screen Silver Frame 16:9 Gray Fabri

$263.98