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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.

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Side Roller Attachment for the 900 Projector HA5760 New
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Sharp Projector Lamp AN-C430LP
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Smart Boards (ct9) SB-580 Whiteboard (KSD/8-2714) J-893
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OVERHEAD PROJECTOR SCREEN TRIPOD 2.5 GAIN 70 X70 W CASE
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40 inch Ultra Portable Table Top Projector Screen 4:3
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90" 4:3 High-Gain Electric Projector Screen Top Line
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Wolf Vision VZ-8plus VZ-8 Plus Remote Control Laser NEW
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Compaq iPAQ MP2810 Microprojector
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48" x 96" ALUMINUM FRAMED DRY ERASE BOARD WITH TRAY NEW
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Canon DZ-3600U Digital Visualizer Document Camera
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Sony Video Presentation Stand VID-P110
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Eiki 10SAZ EX6100 1000-watt Ushio Projector Lamp
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3M Model 395 Overhead Projector w/ Transparencies NEW !
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Expo Mini Silver Dry Erase Board 5" x 7" Lot of 10
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AOSOM 136" ELECTRIC PROJECTOR PROJECTION SCREEN-2.5GAIN
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SYLVANIA PROJECTOR BULB TUNGSTEN HALOGEN 80W 30V EPF 82
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GOLDEN STATE Indoor Outdoor Speaker Siren 30W NEW
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Expo Dry Erase Board Doctor Removes Permanent Ink
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APOLLO CONCEPT 2210 BUSINESS Overhead Projector
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FREEBEAN FREE BEAN EBEAN WIRELESS MDL.VP6350 UNUSED
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NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 84" 16:9 NR!
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Lucent 15 Watt Horn Model: 51001 1265
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A1-2000 ECLIPSE PROJECTOR
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3M 1800 Overhead Projector 1800 BJ1
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Apollo InkJet Printer Transparency Film
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NEC MT840 MULTISYNC VIDEO PROJECTOR
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3M High Performance Transparency Film Ink Jet Printers
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Expo Dry & Wet Erase Board Magnetic Gray Marker Minder
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SPINDLER SAUPPE DIRECTOR 24 PROJECTOR DISSOLVE UNITS 3
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Dukane Overhead Projector #632 lamp changer +spare lamp
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Dukane SunSplash SP2223 2200 Lumens Overhead Projector
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99-inch 1:1 Portable Tripod Projector Screen
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3M 1700AJE Overhead Projector
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3M 1715 School Overhead Projector * * 2 NEW BULBS * *
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103 Fixed Frame Projector Screen 2.35:1 White Fabric
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NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 150" 16:9 NR!
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*Dukane DVP505A Digital XGA Visual Presenter w/Extras*
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Overhead Projectors (ct.19) (KSD/08-2619) J-597
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Apollo AI-1000 Overhead Projector
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HISONIC 35 WATT PA SYSTEM w/ 3 VHF WIRELESS MICROPHONES
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3M PORTABLE OVERHEAD TRANSPARENCY BRIEFCASE PROJECTOR
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EXPO COMBO BOARDS DRY ERASE MEMO BOARD 23" x 36 NEW!!
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Megaphone- Music Switch/Siren-Get Their Attention Now!!
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100 IBM Color Laser Printer Transparency Film Sheets!
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Dukane Professional Overhead Projector Model 4003
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3M 9100 PORTABLE OVERHEAD PROJECTOR **2800 LUMENS**
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NEW Canon RE-350 PAL Video Visualizer Doc Camera EUROPE
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30W Megaphone:Safety Siren:Music:Speaker Mic.- Bullhorn
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ELMO DT-100AF DESK-TOP PRESENTER
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100 IBM Inkjet Transparency Film w/Stripe, Ink Jet!
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USED Da-Lite / Beseler, PS 360/LC Overhead Projector
$35.00
36" x 48" ALUMINUM FRAMED DRY ERASE BOARD WITH TRAY NEW
$34.99
Samsung SVP-5500N-ST Video Presenter Document Camera
$158.72
High Power Mini Hand Held Megaphone Speaker NIB Sports
$9.95
New APOLLO 60x60 TRIPOD PROJECTION SCREEN VPT6060 Black
$34.99
Dry Erase Board Film (White Or Clear) Window Tint
$8.00
Elmo Overhead Projector HP-5500 Zoom
$9.99
3M Overhead Projector Mobile W/Handle
$49.99
Elmo Overhead Projector HP-L3550H + spare lamp
$33.00
48 x 72 Dry Erase White Marker Board Office Classroom
$162.99
MAGNETIC DRY-ERASE BOARD WITH FOOTBALL TEXTURES NEW
$5.00
15 Watt PA Megaphone Bullhorn Bull Horn Siren
$17.99
ELMO Overhead Projector
$24.99
135" 1:1 Square Manual Pull Down Projector Screen
$111.98
Quartet Instant Display Easel
$9.99
Tour Guide's Portable PA Voice Amplifier w/ Microphone
$49.95
MAGNETIC DRY-ERASE BOARD WITH GOLFBALL TEXTURES NEW
$5.00
QUARTET 24X36 DRY PORCELAIN STEEL DRY ERASE BOARD
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NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
Apollo Horizon Overhead Projector Model 15000
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New Office Depot Exec Laser Pointer Pen LED Light PDA
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Apollo Overhead Projector 16000 Apollo Horizon 2 NEW
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EPSON 6006170 POWERLITE 810C 820P 810 C 820 P REMOTE
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Little Suzy Zoo Dry Erase Babysitter Information Center
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Access Roller Motor Operated Projection Screen!!!
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DUKANE 663 PORTABLE TRANSPARENCY OVERHEAD PROJECTOR
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HP L1731A ep7100/9000 Projector Lamp Assembly OEM NR
$140.00
DA-Lite Folding Overhead Projector PS-360/LCP-R VINTAGE
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DA-LITE 96x96 MOVIE PROJECTOR SCREEN 2.8 GAIN NEW
$294.88
Epson DC-10s Document Camera
$400.00
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
Infocus lp335 Projector 1024x768
$30.00
Elmo HP-3K DX Overhead Projector Lamp - 4000 Lumens
$99.99
3M 9200 Overhead Projector Used good
$34.99
CANON RE-650 MKII VIDEO VISUALIZER PRESENTER/PROJECTOR
$51.00
DSAN AV-1000, Speaker Timer w/Podium/Audience Signals
$86.61
Expo Organize It! Dry Erase Board w/ 6 Accessories-Rare
$9.99
3M OVERHEAD PROJECTOR 9950 - USED
$9.99
A2K PULL N GO 80W AC / DC PA + 2 CH WIRELESS MICS + CD
$499.95
nView Z Office Presentation or School Projection Panel
$9.99
ELMO 9419 CLASSROOM VISUAL PRESENTER 5.2X TT-02S
$28.01
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 150" 4:3 NR!
$269.00
Dukane 632A 1700 Lumens Overhead Projector w/ Bulb
$19.99
120" 4:3 Electric Motorized Projector Screen Gray
$325.98
Elmo TT-02S Classroom Visual Presenter - 5.3x Optical Z
$330.00
CLASSROOM TEACHER AUCTIONEER LECTERN PODIUM LECTURN
$59.95