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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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10W Rally Megaphone / Bullhorn w Speaker Mic. -BULLHORN
$9.41
AVerMedia Avervision 100 Pro Document Camera/Light Box
$150.00
Apollo Horizon 2 V16000 Overhead Projector Office/Class
$61.00
ELMO HP-L11CH OVERHEAD PROJECTOR W/ WORKING LAMP ~NICE
$29.99
DUKANE PROFESSIONAL OVERHEAD PROJECTOR 4003 28A4003 #
$60.00
24 VIS A VIS WIPEOFF WET ERASE MARKERS Asst Colors
$13.99
3M 9060 Collapsable Overhead Projector
$21.00
3m write on transparency's
$0.50
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
IBM Copier Transparencies 24L5039 NIP sealed
$5.00
3-HVY DUTY DRY ERASE BOARD MAGNETIC PINNACLE II 2'X3'
$29.99
100" 16:9 High-Gain Electric Projector Screen BlackCase
$246.98
NEC GT2000R Projector
$167.50
EPSON POWERLITE S3 MULTIMEDIA PROJECTOR *FACTORY NEW*
$575.00
Viewsonic PJ256D Micro Portable DLP Projector
$399.99
HEAVY DUTY DRY ERASE BOARD MAGNETIC PINNACLE II 2'X3'
$9.99
Da-Lite Visualizer Visual Presenter Document Camera
$179.00
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
Quartet Dry-Erase Board Magnetic Plastic Frame 9" X 11
$9.48
NEW BRIEFCASE SZ BAG AVAIL SEPARATE LAMPCHANGER FNT ...
$424.99
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 84" 4:3 NR!
$81.01
Mimio Digital Meeting Assistant
$76.00
100 inch Tab Tension Super Flat Projector Screen 4:3
$475.98
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 84" 16:9 NR!
$149.99
Used Hanging Daylite High Gain Projector Screen w/warra
$89.95
BOGEN SM1EZ- 70 VOLT CEILING SPEAKERS X2
$29.99
Elmo HP-L355 Deluxe Overhead Projector with (2) Lamps
$29.99
Color Cells Scrolling Electronic Text Sign
$24.99
3M ENX 360W Overhead Projector Bulb HA6000-24 "5 LOT"
$35.00
3M 9100 Overhead Projector - 2800 Lumens ~estate find~
$46.00
PORTABLE 3M Overhead Projector Briefcase 2770
$49.00
CANON DZ-3600U DIGITAL DOCUMENT CAMERA for parts
$100.00
NEW 3M Overhead projector 1711 - Overhead projector ...
$133.99
OVERHEAD PROJECTOR IN GOOD CONDITION
$45.00
SAMSUNG SVP-6000N VIDEO VISUAL PRESENTER / DOC. CAMERA
$399.00
BLANK NAME TAG LABELS 3.375" X 2.33" LABEL :313806
$15.49
10W Rally Megaphone / Bullhorn w Speaker Mic. -BULLHORN
$9.41
EXPO BOARD - 24" x 18" - COLOR BLACK
$0.99
3M Overhead Projector Model 313 - 3000 Lumens ~L@@K~
$42.00
NAME TAGS - BLANK NAME TAG SIZE STICKER LABELS:313806
$15.49
AVERY 5282 OVERHEAD TRANSPARENCY FOR LASER PRINTERS
$5.99
SmartBoard SB580
$349.00
NEW InFocus IN24+ Multimedia DLP Projector MSRP $699
$100.00
Dukane Sun Splash 2125 Overhead Projector +Working Lamp
$29.99
Infocus Smartview 3600 Projector
$9.99
32 EXPO DRY ERASE MARKERS Vivid Colors!
$14.29
Showtime Portable Display System-60x30 (3-20x30 panels)
$44.95
NEW InFocus IN24+ Multimedia DLP Projector MSRP $699
$202.50
MEGAPHONE BULL HORN SIREN MICROPHONE BULLHORN SPEAKER Y
$14.95
Wireless Presentation Remote Powerpoint Laser Pointer
$41.99
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
Ednalite Projection Pointer Model 120 A With Case
$40.00
3M 9200 Overhead Projector
$35.99
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
Smartboard Interactive Whiteboard
$1400.00
BOSE 102F- 70 VOLT CEILING SPEAKERS X2
$39.99
Overhead Projector - Apollo 8000 - Portable, w/Extras
$50.00
24 SHARPIE BLACK Fine Pt Industrial MARKERS
$13.99
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
3M Overhead Projector Model 2100 AJAT
$149.99
10 SIMON THERMAL TRANSPARENCIES 100 COUNT TR-485
$9.99
EIKI OVERHEAD PROJECTOR MODEL 3960A 3000 LUMENS w/ BULB
$29.99
110" 4:3 High Gain High Contrast Projector Screen Black
$219.99
Waistband PA Voice Booster / Amplifier w/ Microphone
$39.95
42" Plasma ATA Case HEAVY DUTY 3/8" Ply - Carpet Lined
$249.00
ELMO Visual Presenter Projector EV-700AF 3 CCD Camera
$222.50
BELL AND HOWELL 301L OVERHEAD PROJECTOR 301 L
$24.99
LABELS - NAME BADGE LABELS 3.375" X 2.33" LABELS:313806
$15.49
GBC ClearView Presentation Covers Standard Clear
$42.99
NEW 60" X 60" TRIPOD PROJECTOR SCREEN
$119.95
MagniView Color Data/Video Projector w/ Case
$19.99
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC
$15.68
DA-LITE 70x70 HIGH GAIN (2.5) TRIPOD PROJECTOR SCREEN
$112.52
AVERY 5285 Laser Transparencies w/Color Frames
$5.99
Elmo HP-L355 Overhead Projector with Working Lamp
$24.99
ELMO TRV-16H Telecine 16mm film transfer TRV-16 NR
$3700.00
QUARTET 156366 Carry Case-f/Tabletop Display #392742-NR
$22.95
MEGAPHONE BULL HORN SIREN MICROPHONE BULLHORN SPEAKER Y
$14.95
3M Model 1830 Overhead Projector * NEW BULB *
$39.95
NEW 50" X 50" TRIPOD PROJECTOR SCREEN
$95.95
NEW CLOSED DOUBLET LENS ENX LAMP CHANGER 2800 LUMEN
$293.99
Marks A Lot Whiteboard Marker & Eraser Set, Black & Red
$0.99
106 16:9 High Gain High Contrast Projector Screen Black
$209.99
DA-LITE/Beseler Porta Scribe 15800 DYST Projector
$99.99
OVERHEAD ART OPAQUE PROJECTOR EPISCOPE ENLARGE PICTURE
$39.95
90" 4:3 Electric Motorized Projector Screen Gray
$199.98
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806
$14.28
Wireless Red Laser Pointer, Remote Control Powerpoint
$13.98
Elmo eV-6000AF Visual presenter needs repair
$31.25
DA-LITE 84x84 PORTABLE TRIPOD PROJECTOR SCREEN NEW
$112.52
TOSHIBA P4130 VIDEO WALL PROJECTION UNIT P4130VU
$75.00
PORTABLE 25 WATT MEGAPHONE w/LOUD SIREN w/MICROPHONE
$27.90
Travelgraph Overhead Projector Model 21000 RXB-CC
$15.50
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 106" 4:3 NR!
$179.99
Sharp QA-50 Projector
$9.99
Da-Lite Portable Projection Projector Screen 10' x 10'
$499.00
92 Fixed Projector Screen Silver Frame 16:9 Gray Fabri
$263.98
3M Overhead Projector Model 900 AJB Excellent Condition
$89.99