ViewSonic LSD400HD-ST 4,000 Lumens Full HD Short-Throw Laser Projector for Business and Education
- 1,920 × 1,080 Resolution · 16:9
- 3,000,000:1 Contrast
- 4,000 ANSI lumens, 32/27 dB(A) Light & noise
- ST · TR 0.5:1 Lens
- H/V keystone Setup
- 0.65" DMD chip Features
- 360° installation Setup
- 30,000h laser light source Light source
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Description

ViewSonic LSD400HD-ST
- 3000,000:1Contrast
- 44–329 cmThrow distance
- 4,000ANSI lumens
- 0.5:1Throw ratio
Short description
The ViewSonic LSD400HD-ST is a lamp-free short-throw projector developed specifically for education and business environments. Thanks to 3rd-generation laser phosphor technology, the unit offers a high light output of 4,000 ANSI lumens for clear projection in bright rooms. The short-throw lens produces a 100-inch image from just 1.1 metres away, making it the ideal partner for small rooms and installations close to the wall.
Benefits and special features
- 3rd-generation laser phosphor technology with a lifetime of up to 30,000 hours in SuperEco mode.
- Short-throw lens enables large projections without shadows from a short distance (TR 0.5:1).
- 0.65" DMD chip delivers a high native contrast ratio for deep black levels and sharp text.
- Maximum flexibility with 360° projection and horizontal and vertical keystone correction.
- Low energy consumption thanks to a highly efficient laser module compared with conventional lamp projectors.
- Suitable for 24/7 operation in professional digital signage scenarios and exhibitions.
Picture and sound quality
The projector uses a 0.65" DMD chip (DLP technology) that delivers native Full HD resolution of 1,920 x 1,080 pixels. With a brightness of 4,000 ANSI lumens and a dynamic contrast of 3,000,000:1, the unit produces a clearly visible image even in environments with ambient light. The colour spectrum comprises 1.07 billion displayable colours.
The integrated audio solution consists of a 15 W speaker that provides sufficient speech intelligibility for medium-sized meeting rooms. A 3.5 mm audio output is available for larger installations.
- 2x HDMI 2.0 (HDCP 2.2)
- 1x audio output (3.5 mm jack)
- 1x USB-A (5V/1.5A power supply)
- 1x RS232 (control)
- 1x RJ45 (LAN control)
- 1x USB-A (service)
Mounting and installation
The LSD400HD-ST supports a wide range of setup scenarios, including table projection, ceiling mounting and 360° installations for creative projection angles. For image alignment, the unit offers keystone correction of +/- 15° (horizontal and vertical) and 4-corner adjustment. The scope of delivery includes the power cable, a remote control, a quick start guide and a lens cover.
The unit uses an external power supply (input: 100-240V). The operating temperature is between 0 and 40 °C. For physical security, the unit is equipped with a Kensington lock slot.
Wall distance planning note: add 21.6 cm plus approx. 7–12 cm for plugs and cable exits.
According to the manufacturer, this projector supports image sizes from 40 inches (88 cm) to 300 inches (663 cm).
The throw distance specified by the manufacturer is a minimum of 0.44 m and a maximum of 3.29 m.
| Screen size | Image width (approx.) | Throw distance (approx.) |
|---|---|---|
| 80 inches | 177 cm | 88 cm |
| 100 inches | 221 cm | 110 cm |
| 120 inches | 265 cm | 133 cm |
The calculated throw distances are based on the manufacturer's throw ratio and are intended as guide values. As the measuring points (e.g. from the centre of the lens vs. the front of the housing) often vary in data sheets, calculations accurate to the centimetre cannot always be guaranteed.
Running and follow-up costs
Power consumption is 143 watts in standard mode and drops to under 0.5 watts in standby. Thanks to the laser light source, there are no regular lamp costs. No regular light source replacement required – low maintenance in continuous operation.
| Operating mode | Lifetime | 2 hrs/day | 8 hrs/day |
|---|---|---|---|
| Standard mode | 20,000 h | 27.5 years | 7.0 years |
| ECO mode | 30,000 h | 41.0 years | 10.5 years |
Conclusion
The ViewSonic LSD400HD-ST offers a future-proof, maintenance-free projection solution for educational institutions and commercial spaces. By combining a short-throw lens with long-lasting laser technology, the unit reduces operating costs and installation obstacles. High brightness and flexible 360° orientation make it a versatile tool for modern presentation and signage requirements.
From single unit to complete system: we plan your turnkey projector solution including matching accessories and integration. Ask the specialists at Beamer-Discount for an individual package quote – request it now!
Technical data
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General
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Condition
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Manufacturer
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Brand
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Model name
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Manufacturer part number
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EAN
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Product type
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Product series
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ApplicationEducation projector, Installation projector, Business projector
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Features360° projection, Integrated speaker
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Image
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Projector type
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Resolution
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Aspect ratio
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ANSI lumens
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Contrast ratio
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Light source
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Light source
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Lamp life
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Lamp life (Eco)
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Projection and lens
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Projection distanceShort throw
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Throw ratio0.5 : 1
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Throw distance0.44 to 3.29 m
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Lens included in deliveryYes
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Keystone correction horizontal
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Keystone correction vertical
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Connections and wireless
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Inputs1x Ethernet, 1x RS232, 2x HDMI
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Outputs1x 3.5 mm jack, 1x USB-A
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Energy and noise
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Operating noise
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Operating noise (Eco)
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Power consumption in operation
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Dimensions and weight
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Dimensions (W × H × D)28.6 × 12.9 × 21.6 cm
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Weight
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Colour
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Scope of delivery and warranty
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Scope of deliveryLens cap, Power cable, Quick start guide, Remote control, Warranty card
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Warranty
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Warranty type
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WEEE number
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Documents & downloads
Throw distance calculator – Optimal setup for ViewSonic LSD400HD-ST
Optimal setup for ViewSonic LSD400HD-ST
More settings
Aspect ratio
Borderlinebelow 500 lm/m²
Darkened roomfrom 500 lm/m²
Room with ambient lightfrom 1,000 lm/m²
Bright roomfrom 1,500 lm/m²
Borderline: at this image size the picture looks flat and low in contrast even in a darkened room – better to choose a smaller image.
Reviews
Product safety information
Manufacturer
ViewSonic
EU responsible person
ViewSonic Technology GmbHFürst-Leopold-Platz 1
46284 Dorsten
Germany
Contact
E-Mail: service_deu@viewsonic.com











