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White ViewSonic LS831WU ultra short throw DLP projector with fixed lens and laser phosphor light source

ViewSonic

ViewSonic LS831WU 4500 ANSI Lumens WUXGA ultra short throw business projector

SKU CH-FFGH-X9Y7T MPN LS831WU

Ultra-short-throw laser projector delivers 4500 ANSI lumens at WUXGA 1920 x 1200 for screens up to 200 inches

  • Cabinet ColorWhite
  • TypeDLP
  • Brightness4500 ANSI Lumens
  • Native Resolution1920 x 1200
  • Maximum Resolution1920x1200
  • Aspect Ratio16:10
  • Sharp WUXGA detail from 1920 x 1200 native resolution
  • Bright 4500 ANSI lumens for clear images in lit rooms
  • Ultra-short 0.252 throw ratio places big pictures centimetres from the wall
  • Laser phosphor light source runs up to 20000 hours in normal mode
  • HV keystoning plus 4-corner adjustment simplifies alignment on any surface

Ultra-short-throw business projector

The ViewSonic LS831WU is a DLP laser-phosphor projector built for classrooms and corporate rooms. It produces 4500 ANSI lumens at a native 1920 x 1200 resolution with a 16:10 aspect ratio and a 3,000,000:1 contrast ratio. The light source uses two Nichia 67W lasers rated for up to 20000 hours in normal mode.

Fixed lens with digital zoom and keystone

The lens has a fixed optical zoom and a 0.252 throw ratio, projecting a 100-inch image from 0.21 metres. Digital zoom ranges from .8x to 2.0x. Horizontal and vertical keystone correction cover +/-5°, and four-corner adjustment helps square the image. The cabinet supports 360-degree orientation, including portrait mounting.

Check throw distance and input needs

Verify the available throw distance falls between 0.06 and 0.72 metres for the desired display size of 70 to 200 inches. Confirm source devices can output 1920x1200 at 23 to 120 Hz vertical refresh. Ensure the two HDMI 2.0 ports with HDCP 2.2, HDBaseT, VGA, composite, S-Video, audio jacks, RJ45, RS232 and USB Type A power cover all required connections.

Highlights

  • Sharp WUXGA detail from 1920 x 1200 native resolution
  • Bright 4500 ANSI lumens for clear images in lit rooms
  • Ultra-short 0.252 throw ratio places big pictures centimetres from the wall
  • Laser phosphor light source runs up to 20000 hours in normal mode
  • HV keystoning plus 4-corner adjustment simplifies alignment on any surface

Specifications

BrandViewSonic
ModelLS831WU
Cabinet ColorWhite
TypeDLP
Brightness4500 ANSI Lumens
Native Resolution1920 x 1200
Maximum Resolution1920x1200
Aspect Ratio16:10
Contrast Ratio3,000,000:1
Display Size70" to 200"
Horizontal Refresh Rate15K - 102 KHz
Vertical Refresh Rate23 - 120 Hz
LensOptical Zoom: Fixed
Digital Zoom: 0.8x - 2.0x
f NumberF=2
Throw Ratio0.252
Display Colors1.07 Billion
Throw Distance0.06 - 0.72m, (100"@0.21m)
Keystone CorrectionH:+/-5°, V:+/-5°
LampLaser Phosphor system
Nichia 67W x2
Lamp Lifeup to 20000 Hours (Normal)
Input Video CompatibilityAnalog RGB, Digital, Composite
Input Video ConnectorsComputer in (share with component): 1
Composite: 1
S-Video: 1
HDMI: 2 , (HDMI 2.0 (HDCP 2.2)
Input Audio ConnectorsAudio-in (3.5mm)
Audio-in (RCA R/L)
Output Video ConnectorsMonitor out: 1
Output Audio ConnectorsAudio out (3.5mm)
Network ConnectorsRJ45
USB1 x USB Type A (Power) (5V/ 1.5A), (share with service)
Other Connectors3D VESA (Sync): 1
HDBaseT: 1
RS232 (DB 9-pin male)
Built-in Speakers2 x 10W Cube
Features0.25 ultra short throw for space saving installation
2nd generation Laser Phosphor technology with 20,000 hours lifespan
4,500 ANSI Lumens offering bright images in any environment
Larger screen size with lower cost-per-inch
Cost-effective built-in HDBaseT receiver
Creativity realized by 360° projection
CompatibilityResolution Support: VGA (640 x 480) to 4K (3840 x 2160)
HDTV Compatibility: 480i, 480p, 576i, 576p, 720p, 1080i, 1080p
Video Compatibility: NTSC, PAL, SECAM
Panel-
Power Supply100 - 240 VAC, 50/60Hz
Power ConsumptionNormal: 504W, Standby: <0.5W
Temperature Range0 ~ 40?
Noise LevelAudible Noise (Normal): 36dB
Audible Noise (Eco) : 31dB
Dimensions6.18" x 19.37" x 15.24" w/ Adjustment Foot
Weight21.83 lbs.
Package ContentsLS830 1080p Projector
Power Cable
VGA Cable
HDMI Cable
Remote Control
Shipping weight11.34 kg
Package size635 × 457 × 203 mm

Questions about this item

How do I confirm the LS831WU is projecting correctly after installation?

The laser phosphor light source reaches full brightness instantly. Verify a 1920 x 1200 image fills the 16:10 screen between 70 and 200 inches with 4500 ANSI lumens and 1.07 billion colours, and check HV keystone and 4-corner adjustments remove all distortion.

What ships with the LS831WU and what must I source separately?

The projector includes two HDMI 2.0 ports with HDCP 2.2, RJ45, RS-232, HDBaseT, 3D VESA sync, USB Type-A 5 V/1.5 A, audio in/out and monitor out. You must supply HDMI cables, network cable, RS-232 cable or any streaming stick such as Roku, Fire TV or Chromecast.

Which throw ratio and lens configuration suit my room?

The fixed 0.252 throw ratio places a 100-inch image at 0.21 m and supports 0.06–0.72 m distances. Digital zoom scales 0.8×–2.0× without moving the unit. Choose this model only if the mounting position falls inside that range.

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