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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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Bosch Dry Erase White Marker Board 2 sided magnetic

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3M Audio Visual Division 2010 AGCT Projector

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45 Watt High Power Megaphone Handheld Mic 1 Mile Range

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3M 2000 AG PORTABLE OVERHEAD PROJECTOR BRIEFCASE 2000AG

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NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC

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Apollo 3000 Open Head Overhead Projector

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AOSOM PORTABLE PROJECTOR PROJECTION SCREEN 60"X60" NEW

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100" 16:9 High-Gain Electric Projector Screen BlackCase

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D-LINK DPG-2000W WIRELESS PRESENTATION GATEWAY 802.11G

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High Power Mini Hand Held Megaphone Speaker NIB Sports

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Artist's Presentation Portfolio

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AOSOM 136" ELECTRIC PROJECTOR PROJECTION SCREEN 96"X96"

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DUAL 180W AMPLIFIED PA SPEAKERS WIRELESS MICS +TRIPODS

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NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 100" 16:9 NR!

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Apollo 1600 Horizon 2 Overhead Projector

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Da Lite 5000 Portable Overhead Presentation Projector

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Stewart Screen Luxus Deluxe Firehawk 100" 16:9

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NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC

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AOSOM 95" ELECTRIC PROJECTOR PROJECTION SCREEN-2.5GAIN

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LASER POINTER PEN ~ BLACK FINE POINT ~ WITH FREE BONUS!

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50" PLASMA MEDIUM DUTY ATA TRAVEL CASE - GIVEAWAY DEAL!

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Canon RE-350 Video Visualizer Presentation Camera

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Jelco ATA hard case for projector, camera, etc. GREAT!

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100 inch Tab Tension Super Flat Projector Screen 4:3

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Expo Jumbo Aluminum Legs Easel w/PAD Clip and Easel Pad

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92 Fixed Projector Screen Silver Frame 16:9 Gray Fabri

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3M 9100 OVERHEAD PROJECTOR

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Conference Room Marker Board / Presentation Cabinet

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

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DA-LITE 60x60 HIGH GAIN (2.5) TRIPOD PROJECTOR SCREEN

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BLUE BEAST HI-OUTPUT AAA BATTERY RED BEAM LASER POINTER

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Elmo EV-700AF Visual Presenter Three Chip Camera

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View Sonic Portable Overhead Projector

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AOSOM PORTABLE PROJECTOR PROJECTION SCREEN 70"X70" NEW

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Elite Screens 85" Portable Tripod Projection Screen/NR

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BLUE BEAST HI-OUTPUT AAA BATTERY RED BEAM LASER POINTER

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90" 4:3 High Gain High Contrast Projector Screen White

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NAME BADGE LABELS 3.375" X 2.33" LABEL :313806

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3M Overhead Projector Model 9100 9000AJB

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40 inch Ultra Portable Table Top Projector Screen 4:3

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Computer video projector Vintage Limelight w/ TV TUBE!!

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DUAL 150W AMPLIFIED PA SPEAKERS WIRELESS MICS +TRIPODS

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NEW Draper AccuScreens Precision Mounts APM3655WF Fl...

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EXPO COMBO MAGNETIC DRY ERASE MEMO BOARD 23" x 36" NEW

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50" PLASMA MEDIUM DUTY ATA TRAVEL CASE - GIVEAWAY DEAL!

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NEW Draper AccuScreens Precision Mounts APM2537WF Fl...

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NEW Draper AccuScreens Precision Mounts APM2537WTRE ...

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AOSOM MANUAL WALL PROJECTOR PROJECTION SCREEN 60"X60"

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PANASONIC UB-2815C ELECTRONIC WHITEBOARD

$600.00
AVerKey iMicro Pc/Mac to TV Converter Very Good Cond.

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NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC

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NEW Draper AccuScreens Precision Mounts APM3655WTRE ...

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NEW Draper 15-3/4" Extension 800303

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3M 1700 Series Overhead Projector lot

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NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 106" 16:9 NR!

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Elmo HV-5000XG Visual Presenter Presentation

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AOSOM 80" ELECTRIC PROJECTOR PROJECTION SCREEN-2.5Gain

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Apollo Horizon Overhead Projector Model 15000

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FREEBEAN FREE BEAN EBEAN WIRELESS MDL.VP6350 UNUSED

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MAGNETIC DRY-ERASE BOARD WITH BASKETBALL TEXTURE - NEW

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BEYOND SIGHT VISIONARY Magnifier Machine by MACINSIGHT

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106 16:9 High Gain High Contrast Projector Screen Black

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NEW Draper AccuScreens Precision Mounts APM2537WT Fl...

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NEW Draper 23-1/2" Extension 800304

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Kodak Carousel Transvue 80 Slide Tray

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90" 4:3 High Gain High Contrast Projector Screen White

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NEW Draper 8" Extension 800302

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CORPORATE EXPRESS TRANSPARENCY FILM- BOX OF 50

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72 Fixed Projector Screen Silver Frame 16:9 Gray Fabri

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Overhead Projector Model 3000

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4 x 8 Dry Erase Marker Board w/Oak Frame for Classroom

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NEW Draper AccuScreens APM Fixed Projector Mount 800301

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AOSOM MANUAL WALL PROJECTOR PROJECTION SCREEN 70"X70"

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New Multiple Use 3-In-1 Laser, Pen & Light w/Batteries

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Draper/Da-Lite, (20) Flipchart Easel

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PROXIMA DESKTOP PROJECTOR 2700

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TRIPOD PROJECTION SCREEN W/CASE 84x84 PORTABLE

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Acco Quartet Dry Marker Erase Magnetic Easel Flipchart

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Colorgraphic Communications Impatica SMBB-100 Show Mate

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90" 4:3 High Gain High Contrast Projector Screen White

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Mini Voice Amplifier Portable Megaphone Mega Phone NEW

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Sharp XG-E630U 3LCD Projector - parts

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