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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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NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 84" 16:9 NR!
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Elmo HP-L14 OVERHEAD PROJECTOR - NEW LAMP
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NEC GT6000 SXGA+ LCD Multimedia Projector - 5300 Lumens
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Crestron, (8) 10in Color Lecturn Touch Panel
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3 NEW CG7060 TRANSPARENCY FILM FOR LASER PRINTER
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OSRAM VIP R400/44 PROJECTOR LAMP
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Buhl Overhead Projector Model 80, heavy duty
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LOUD MINI MEGAPHONE ~ PORTABLE MEGA PHONE NEW
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MEGAPHONE WITH SAFETY SIREN PISTOL GRIP BULLHORN
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NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
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DA-LITE 96x96 WALL MOUNT MANUAL PROJECTOR SCREEN DALITE
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3M Model 1710 Overhead Projector * * 2 NEW BULBS * *
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Elmo HP-2450 Overhead Projector Strong Lamp Works Look
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3M Model 1720 Overhead Projector * NEW BULB *
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SMART Board 680 77in. interactive Whiteboard
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APOLLO OVERHEAD PROJECTOR!!
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3M 2130 Overhead Projector Model: 2100 AJAT
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POLYCOM IP SHOWSTATION
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3M 1810 Overhead Projector - NEW 3M OHP 1810 NEW
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3M 9700 OVERHEAD PROJECTOR MODEL: 900AJJ
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30W MEGAPHONE BULLHORNS MICROPHONE SIREN SPEAKER MUSIC
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80" 16:9 HDTV Electric Motorized Screen Gray Fabric
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Claridge Lockable Bulletin Board Display Case 48” x 72”
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Apollo Horizon Overhead Projector Model 15000
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3M Overhead Projector model no. 9550
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Amplivox Roving Rostrum Portable PA/Lecturn
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Expo Eraser XL 8 Layer Refill Eraser Pad
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ELMO VISUAL PRESENTER EV-500AF
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One Touch Site Controller SC210 AS IS
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Screen Innovations 93" Pull Down Screen
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TRANSPARENCY FILM GENUINE IBM LASER/COPIER #34646
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50 XEROX COPIER LASER TRANSPARENCIES 100 COUNT 3R3108
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Casio XJ-S41BB Super Slim Projector
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15 Watt PA Megaphone Bullhorn Bull Horn Siren
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3M Overhead Projector 9060 installed lamp + spare
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Expo Dry Erase Board Doctor Removes Permanent Ink
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3M 2000 Overhead Projector
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7 BOXES NEW LOT APOLLO WRITE-ON TRANSPARENCY FILM-NIB
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Wireless Red Laser Pointer, Remote Control Powerpoint
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MIMIO Digital Meeting Assistant Whiteboard Interface
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SAMSUNG SVP-6000N VIDEO VISUAL PRESENTER / DOC. CAMERA
$389.00
3M 9200 OVERHEAD PROJECTOR - NEW LAMP
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3M 1895 Overhead Projector - NEW 3M OHP 1895 NEW
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SHARP DT300 DLP 1080i Multimedia Projector 1024x576
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Expo Vis-A-Vis Wet Erase Markers Purple Ink Lot of 30
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10W Rally Megaphone / Bullhorn w Speaker Mic. -BULLHORN
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3M MPro110 Pocket Micro Professional LED Projector
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Apollo AI-1000 Overhead Projector, w/Manual, NR
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(2) Quartet dry erase boards 8 ft long by 4 ft high
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3M 9080 Overhead Projector with Working Lamp
$0.01
DA-LITE 40744 9' X 9' CEILING ELECTRIC SCREEN DALITE
$500.00
NEW MEGAPHONE SIREN MICROPHONE BULLHORN SPEAKER LOUD US
$29.95
3M 9100 2800 Lumen Overhead Projector Reconditioned
$63.95
3M Model 1860 Overhead Projector 3000 lumen
$79.95
Picturetel Camera, Keyboard, and Mic L@@K
$29.99
3M 2000 OVERHEAD PORTABLE FOLD-UP BRIEFCASE PROJECTOR
$96.00
Wireless bluetooth Page Up/Down Presentation Pen
$24.99
Samsung SVP-4100N Video Visual Presenter
$75.00
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 150" 4:3 NR!
$269.00
3m 9100 Overhead Projector Never Used
$51.00
ELMO P30S DIGITAL VISUAL PRESENTER - OVERHEAD PROJECTOR
$2500.00
Expo Dry Erase Markers Chisel Tip Low Odor Berry Ink 12
$0.99
Expo Dry Erase Markers Fine Tip Assorted Ink Pack of 3
$0.99
3M 1610 Overhead Projector - NEW 3M OHP 1610 NEW
$129.00
HITACHI 82" STARBOARD WIRELESS WHITEBOARD FX-82W
$371.93
3 Packs 3M Dual-Purpose Transparency Film NEW 150 TOTAL
$9.99
MIMIO Xi INTERACTIVE + CAPTURE VIRTUAL INK
$112.50
Bell & Howell 301F Overhead Projector w/Tansp.Feeder
$24.99
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
PROMAX DG800 DIGITAL VIDEO PRESENTER / VISUALIZER
$999.99
MEGAPHONE BULLHORN with MICROPHONE and SIREN new
$24.99
4-in-1 Ball Pen +LED Light+PDA Stylus+Laser Pointer
$7.99
30W Megaphone:Safety Siren:Music:Speaker Mic.- Bullhorn
$15.68
Elmo EV-6000 Video Visualizer Presenter Document Camera
$299.00
POLYVISION WALK AND TALK INTERACTIVE LCD PANEL
$895.00
Apollo Horizon Overhead Projector Model 15000
$14.99
Kodak DataShow HR System Projection Pad w/Carrying Case
$16.99
Samsung SDP-900dx Video Visual Presenter doc camera
$150.00
Bell & Howell Still Picture Projector
$19.99
30W MEGAPHONE BULLHORNS MICROPHONE SIREN SPEAKER MUSIC
$24.99
XEROX TECKTRONIX TRANSPARENCY FILM BOX 50 #016172400
$25.99
Presentation board/easel carrying bag carrier 24x37 blk
$24.99
PROMAX DG800 DIGITAL VIDEO PRESENTER / VISUALIZER
$925.00
KODAK CAROUSEL CUSTOM 850 H PROJECTOR W/ CASE 2 BULBS
$34.99
12 Presentation Books binders pockets sheet protectors
$9.99
Mimio digital meeting assistant
$55.00
SYLVANIA Lamps Halogen PROJECTOR 600w DYP
$9.99
Apollo AI-1000 Professional Overhead Projector, 400 Wat
$34.99
Sylvania Exciter Lamps BSW 7V for Reproduction
$9.99
MITSUBISHI XL5950U HD HOME THEATER 4700 lumen projector
$799.99
3M 1711 Overhead Projector - Full Warranty 1711 OHP NEW
$139.00
Hitachi T-15XLG Interactive LCD panel, ST15XLIP, T-15XL
$1289.99
NEW PORTABLE 10 WATT HANDHELD MINI MEGAPHONE LOUD SIREN
$11.90
30W MEGAPHONE BULLHORNS MICROPHONE SIREN SPEAKER MUSIC
$24.99
Elmo Visualizer Video Visual Presenter Document Camera
$210.00
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
Dry erase Board 3 ft or 4 feet length
$9.99