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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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LABELS - NAME BADGE LABELS 3.375" X 2.33" LABELS:313806
$15.49
Elmo EV-6000AF Analog Visual Presenter Overhead Camera
$760.00
HISONIC HS210 UHF 32 CH 20W PORTABLE PA + WIRELESS MICS
$159.95
EIKI LC COLOR VIDEO PROJECTOR w. VIDEO CASSETTE PLAYER
$100.00
3M 9060 COLLAPSABLE OVERHEAD PROJECTOR 360W 2800 LUMENS
$50.00
GUITAR SHAPED Magnetic Foam Dry-Erase Memo Board NIP
$8.99
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
120" 4:3 High-Gain Electric Projector Screen Black Case
$325.98
NEC Remote Controller RU-M112
$2.99
3M 9060 2500 LUMENS OVERHEAD PROJECTOR w/ WORKING LAMP
$34.99
JBL CONTROL 26CT -70 VOLT SPEAKERS X 2
$69.99
3M 1880 OVERHEAD PROJECTOR WITH NEW BULB INSTALLED!!!!
$38.02
NEC LT 240 Projector W/bag and accessories
$250.00
100 16:9 High Gain High Contrast Projector Screen White
$189.99
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
3M 9100 Overhead Projector - 2800 Lumens ~estate find~
$31.00
New Sharp projector lamp bqc-xgnv2u//1
$50.00
Mediaphile PAS-001-B-JL, (2) Presentation Audio System
$9.99
3M 9100 Overhead Projector 2 Halogen Lamp Office School
$124.99
18" X 24" FRAMED HOME DECOR MAGNETIC DRY ERASE BOARD
$15.49
Hammermill Premium Inkjet Transparency Film 1000 sht
$99.00
Smartboard Smart Interactive Whiteboard 580 Brand NEW
$699.99
10W Rally Megaphone / Bullhorn w Speaker Mic. -BULLHORN
$9.41
DA-LITE 30x40 Presenter 50" Diagonal, Portable Screen
$1.99
3M 9100 FOLDING OVERHEAD PROJECTOR *2 BULBS *2800 LUMEN
$99.00
Hammermill Premium Inkjet Transparency Film 100 sht
$25.00
BLANK NAME TAG STICKER LABELS 3.375" X 2.33":313806
$15.49
SAMSUNG XGA OVERHEAD DIGITAL VISUAL PRESENTER UF-80ST
$653.96
Mimio Digital Meeting Assistant
$49.99
Elmo Portable Overhead Projector HP 285S Works Great
$65.00
projector LCD InFocus LitePro 580 presentation A/V
$99.99
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
PORTABLE 25 WATT MEGAPHONE w/LOUD SIREN w/MICROPHONE
$27.90
Podium Lectern Amplifier Speakers Stand with Microphone
$194.95
DA-LITE 70x70 HIGH GAIN (2.5) TRIPOD PROJECTOR SCREEN
$112.52
NEW MEGAPHONE SIREN MICROPHONE BULLHORN SPEAKER LOUD US
$29.95
Waistband PA Voice Booster / Amplifier w/ Microphone
$39.95
SAMSUNG SVP-4200N Visual Presenter Doc Camera w/ Extras
$79.99
Apollo 6 Overhead projector used
$10.50
84 SHARPIE Fine Line MARKERS Blue, Black or Red
$25.99
NAME TAGS - BLANK NAME TAG SIZE STICKER LABELS:313806
$15.49
Draper M2500 Premier Projector Screen 200112 72x96 NEW
$799.99
110" 4:3 Electric Motorized Projector Screen Gray
$281.98
CLASSROOM TEACHER AUCTIONEER LECTERN PODIUM LECTURN
$59.95
DUKANE PROFESSIONAL OVERHEAD PROJECTOR 4003 28A4003 #
$60.00
IBM Copier Transparencies 24L5039 NIP sealed
$5.00
BELL AND HOWELL 301L OVERHEAD PROJECTOR 301 L
$24.99
48 SHARPIE BLACK Fine Pt Industrial MARKERS
$25.99
INFOCUS PANEL BOOK 450
$9.99
Toshiba P4130U Video Wall Projection Unit P4130-VU CRT
$219.99
LOUD MINI MEGAPHONE ~ PORTABLE MEGA PHONE NEW
$9.95
New! 36" x 48" Aluminum Framed Dry Erase Board w/ Tray
$39.99
ASPI EF400 Acoustic Echo Canceller NEW
$499.99
Elmo EV-308 Visual Presenter
$20.50
DA-LITE FLYER 40X40 TRIPOD PROJECTOR PROJECTION SCREEN
$10.50
NEW 99" (70" X 70") TRIPOD PROJECTOR SCREEN
$129.95
Lot of 3 Apollo FXL Overhead Projector Replacement Lamp
$19.99
Smartboard Interactive Whiteboard
$1400.00
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
EYB Projector Replacement Lamp Bulb 3M Apollo Buhl Eiki
$10.99
Ednalite Projection Pointer Model 120 A With Case
$40.00
RC LASER POINTER NEW IN BOX
$1.99
HITACHI 82" STARBOARD WIRELESS WHITEBOARD FX-82W
$509.96
3M Transparency Sleeves RS7109 Qty 180 new
$83.99
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
Wireless Red Laser Pointer, Remote Control Powerpoint
$13.98
OVERHEAD ART OPAQUE PROJECTOR EPISCOPE ENLARGE PICTURE
$39.95
3M 9700 Overhead Projector
$49.99
PRESENTATION PAPER Premium Color Matte 100 sheets
$2.99
QUARTET TA-33062 WIRELESS PRESENTATION REMOTE CONTROL
$9.99
Polycom Videolabs PRO XGA Document Camera Presenter
$325.00
NEW InFocus IN24+ Multimedia DLP Projector MSRP $699
$137.51
InFocus Lamp Module SP-LAMP-LP4Z for LP425Z or LP435Z
$149.99
SAMSUNG SVP-6000N VIDEO VISUAL PRESENTER / DOC. CAMERA
$395.00
Canon RE-650 MKII Video Visualizer Parts/Repair
$39.95
3M MODEL 9100 2800 LUMEN PORTABLE OVERHEAD PROJECTOR
$29.00
11' 6" x 15' Da-Lite Fast Fold Heavy Duty Deluxe System
$1300.00
80 WATT AMP / SPEAKER PA + 2 VHF WIRELESS MICS + TRIPOD
$299.95
3M Overhead Projector Model 313 - 3000 Lumens ~L@@K~
$19.99
EIKI 3990A Overhead Projector, Works-Excellent Quality
$15.50
110" 4:3 High-Gain Electric Projector Screen Top Line
$307.98
42" Plasma ATA Case HEAVY DUTY 3/8" Ply - Carpet Lined
$249.00
3M 9100 Overhead Projector - 2800 Lumens ~estate find~
$19.99
30W Megaphone:Safety Siren:Music:Speaker Mic.- Bullhorn
$15.68
MAGNET COMPATIBLE DRY-RASE ACCESSORY KIT W/BONUS NIP
$1.99
INTERLINK RemotePoint Presenter VP4300
$44.99
ViewSonic PJ458D DLP Projector
$399.99
MEGA PHONE MEGAPHONE BULL HORN BULLHORN SPORTING EVENT
$9.99
Portable Overhead Projector Apollo Deluxe Concept 2250
$76.00
Casio XJ-S36 Super Slim Data Projector No PC Required
$999.99
3M Transparency Film for Overhead Projection + Frame, 2
$4.99
Panasonic DLP Projector Replacement Lamps x 2
$199.99
3M Briefcase Style Overhead Projector - Model #6200AGB
$34.00
Staples Transparency Film LASER PRINTER SL5262 100 NEW
$14.00
Quartet® 6' x 4' Melamine Dry-Erase Board with Oak Fini
$149.00
SMARTboard 72" SB580 Touch Sensitive White Board
$699.99
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
105 Fixed Frame Projector Screen 2.35:1 Gray Fabric
$219.99