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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 MULITSYNC MT840 PROJECTOR
$49.88
3M 1895 Overhead Projector - NEW 3M OHP 1895 NEW
$317.00
MAGNETIC DRY-ERASE BOARD WITH FOOTBALL TEXTURES NEW
$5.00
BLANK NAME TAG LABELS 3.375" X 2.33" LABEL :313806
$15.49
Dukane Overhead Projector 28A622A
$84.99
3M 1711 OVERHEAD PROJECTOR w/ WORKING LAMP ~2500 Lumens
$44.99
3M 2000 Overhead Projector
$74.99
NAME TAGS - BLANK NAME TAG SIZE STICKER LABELS:313806
$15.49
60" PLASMA SCREEN TRAVEL/SHIPPING CASE! - NEW!
$199.00
Overhead Projector w/ Working Bulb & No Scratch Glass
$29.99
Amplivox SW122A Wireless Portable Sound System Lectern
$650.00
BUHL 2900 OVERHEAD PROJECTOR MODEL 2963
$69.00
3M 9550 Folding Overhead Projector - 4000 Lumens!
$35.99
MIMIO DIGITAL MEETING ASSISTANT
$250.00
Screen Innovations TMS80 80" 16:9 Projector Screen
$189.00
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 150" 16:9 NR!
$289.00
Expo Dry Erase Board 8.5" x 11" w/ Black Marker & Clip
$1.29
PANASONIC WHITE BOARD, PANABOARD, PRINT, KX-B555E
$650.00
TOSHIBA TLP411 LCD THEATER PROJECTOR
$145.50
Projector Epson PowerLite 77c 2200 Lumen Multimedia
$400.00
DA-LITE 96x96 WALL MOUNT MANUAL PROJECTOR SCREEN DALITE
$155.20
magnetic planning / scheduling board dry erase
$19.99
SAMSUNG SVP-6000N VIDEO VISUAL PRESENTER / DOC. CAMERA
$415.00
3M OVERHEAD PROJECTOR MODEL 1880 3000 LUMENS NEW IN BOX
$99.99
FANON MEGAPHONE MODEL MV-3!
$15.00
Elmo HV-5000X Visual Presenter Overhead Video Projector
$49.99
3M 9050 Overhead Projector Working Bulb
$24.99
Elmo Visual Presenter EV-500AF
$24.99
NEW PORTABLE 10 WATT HANDHELD MINI MEGAPHONE LOUD SIREN
$11.90
VizCam 1000 Web Cam Presentation Camera 3-Axis Arm
$9.99
3M 1810 Overhead Projector - NEW 3M OHP 1810 NEW
$196.99
3M Overhead Projector 910
$94.99
110" 4:3 High Gain High Contrast Projector Screen White
$219.99
#M Overhead Projector Bulb for EVW, use w/ 6200, 2000
$4.99
Quartet Dry-Erase Board Magnetic Plastic Frame 9" X 11
$9.98
2 NEW COMPACT POCKET MINI MEGAPHONE CHEER SPORTS SIREN
$14.90
Dukane Overhead Projector 28A632A
$84.99
1000ea Transparency Film Copier B&W Stripe 3m P2200 NIB
$59.99
106 Fixed Projector Screen Silver Frame 16:9 Gray Fab
$395.98
3M Overhead Projector 1700
$94.99
Manual Wall Mounted Projection Screen - BRE6570M
$19.00
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
QTERM-J10 Handheld Operators Terminal Model J008
$49.99
Proxima A653 Portable Overhead Projector
$49.99
VizCam 1000 Web Cam Presentation Camera 3-Axis Arm
$9.99
Aluminum Enclosed Bulletin Board
$100.00
Polyvision TS410 USB Interactive Whiteboard NEW UNIT
$999.00
OVERHEAD ART OPAQUE PROJECTOR EPISCOPE ENLARGE PICTURE
$39.95
ELMO HP-L11CH OVERHEAD PROJECTOR W/ WORKING LAMP ~NICE
$29.99
Microtouch ibid-The whiteboard that connects to your PC
$50.00
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
4 MAGNETIC 3 IN 1 DRY ERASE BOARD CALENDAR & CORK BOARD
$35.49
80" 16:9 High-Gain Electric Projector Screen Top Line
$199.98
10W Rally Megaphone / Bullhorn w Speaker Mic. -BULLHORN
$9.41
Elite Screens VMAX113UWS2 Electrol Projection Screen
$380.00
Ask Impact 24 Overhead Presentation LCD Panel
$49.99
Christie RoadRunner LX65 Projector 6500 Lumens HDTV
$6500.00
NIP Expo Dry Erase Markers Eraser Cleaner Board LowOdor
$3.25
Expo Magnetic Dry Erase Board Set 18" x 24" Whiteboard
$14.99
3M MODEL 9100 TABLE OVERHEAD PROJECTOR
$29.99
3M Overhead Presentation LCD Panel 4800
$49.99
Da-Lite, Wooden Podium w/Timer, Reading Light and Clock
$48.70
3M 1711 Overhead Projector - Full Warranty 1711 OHP NEW
$139.00
Document Camera/Video Presenter
$61.00
3M OVERHEAD PROJECTOR MODEL 213
$18.49
Ask Impact 24 Overhead Presentation LCD Panel
$49.99
Samsung SVP-4100N Video Visual Presenter
$99.99
LABELS - NAME BADGE LABELS 3.375" X 2.33" LABELS:313806
$15.49
3M 2000 Portable Overhead Projector 1600 Lumens NICE!
$49.99
AMX Axcent 3 Controller
$29.99
SMART Board 680 77in. interactive Whiteboard
$1999.00
50" Plasma ATA Case HEAVY DUTY 3/8" Ply - Carpet Lined
$269.00
PORTABLE 25 WATT MEGAPHONE w/LOUD SIREN w/MICROPHONE
$23.90
Dukane 4003 Overhead Over Head Projector
$49.99
Dukane Overhead Projector 663
$84.99
DA-LITE 70x70 HIGH GAIN (2.5) TRIPOD PROJECTOR SCREEN
$112.52
3M 2100 AJCT OVERHEAD PROJECTOR 275 WATT
$14.95
Tour Guide's Portable PA Voice Amplifier w/ Microphone
$39.95
Canon Transparency 8.5" x 11" Cf-102 inkjet 50 sheets
$12.99
Travelgraph L101 L-101 Overhead Projector Good
$19.99
3M 1711 OVERHEAD PROJECTOR w/ WORKING LAMP ~2500 Lumens
$49.99
Canon Transparency A4 8.25"X 11.69"-- CF-101--50 sheets
$12.99
MAGNETIC DRY-ERASE BOARD WITH GOLFBALL TEXTURES NEW
$5.00
PORTABLE 25 WATT MEGAPHONE w/LOUD SIREN w/MICROPHONE
$27.90
Plus Vision BF-030S Plus BoardFax Electronic Copyboard
$262.00
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 150" 4:3 NR!
$269.00
transparencies film LOT copier printer 3M HP Color BW +
$24.99
Hitachi T-15XLG Interactive LCD panel, ST15XLIP, T-15XL
$1289.99
Expo Magnetic Silver Dry Erase Board 5" x 7" w/ Marker
$4.00
Mimio Parts Virtual Ink Partial System DMA-01
$56.00
WHOLESALE 250 3M TRANSPARENCY SLEEVES SHEET PROTECTORS
$3.25
ELMO EV-400AF Visual Presenter Video Document camera
$199.00
3m 395 portable overhead projector
$12.50
Proxima Model A653 Folding/Portable Overhead Projector
$49.99
CLASSROOM TEACHER AUCTIONEER LECTERN PODIUM LECTURN
$59.95
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 84" 16:9 NR!
$149.99
Samsung SDP900 Digital Presenter
$239.99
Expo Dry Erase Whiteboard Magnetic Marker Minder Blue
$0.99
3M 1610 Overhead Projector - NEW 3M OHP 1610 NEW
$129.00
23 x 35 IN FRAMED MAGNETIC DRY ERASE BOARD CALENDAR NEW
$20.49