Optoma ZH451ST
- 1920 × 1080 Resolution · Full HD
- 4,200 Light output
- 300,000:1 Contrast
- 16:9 Aspect ratio
- DLP Projector type
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Questions about the product?
Whether it's a conference room, school or home cinema – Florian Langkamp, our Projectors and tenders specialist, will advise you personally and prepare an individual quote for you.
Conference room, school or home cinema: we give you personal advice and put together a tailored quote.
Florian LangkampProjectors and tendersspecialist
Description

Optoma ZH451ST
- 0.5:1Throw ratio
- 40–320 cmThrow distance
- 4,200ANSI lumens
- 300,000:1Contrast
Optoma ZH451ST: compact Full HD short-throw laser projector for professional presentations
If you buy the Optoma ZH451ST, you are choosing a highly efficient projection solution developed specifically for the challenges of modern business and education spaces. Limited space or distracting shadows cast by the presenter often make presentations restless. The Optoma ZH451ST solves these problems with its precise short-throw lens and bright DuraCore laser technology. Benefit from reliable performance without lamp replacement while minimising your operating costs. Optimise your workflow with technology designed for longevity and ease of use.
The benefits of the Optoma ZH451ST at a glance:
- Full HD short-throw laser projector: Create large images from the shortest distance and avoid distracting shadows in front of the screen.
- Low-maintenance business projector: The DuraCore laser light source offers up to 30,000 hours of operation without lamp replacement or filter maintenance.
- 4200-lumen projector: Achieve clear, legible content at all times, even in brightly lit meeting rooms.
Maximum image performance in any environment thanks to short-throw optics
Enjoy image quality that reproduces your content precisely and vividly. Full HD 1080p resolution combined with a brightness of almost 4,200 lumens delivers brilliant resultsthat don't fade even with daylight coming into offices or training rooms. The integrated short-throw lens with a throw ratio of 0.496:1 lets you place the projector less than half a metre from the wall. This creates large images even in small huddle rooms, while the presenter can move freely without blocking the picture. Thanks to high contrast values of 300,000:1, text is displayed razor-sharp and graphics in rich detail, keeping your audience's attention.

Reliability through DuraCore laser technology
Invest in a solution built for long-term efficiency and maximum reliability. Innovative DuraCore laser technology delivers an impressive service life of up to 30,000 hours, guaranteeing virtually maintenance-free operation for many years. Unlike conventional projectors, the costly and time-consuming replacement of mercury lamps is eliminated entirely. The IP6X-certified optical housing also protects the sensitive technology from dust ingress, so brightness and colour brilliance are maintained permanently even in difficult conditions. This makes the unit the ideal choice for demanding 24/7 continuous operation.
Flexible installation and intelligent device management in everyday business
Make your AV technology as flexible as your working day. The Optoma ZH451ST is up to 34 per cent more compact than its predecessors and can be installed in almost any orientation thanks to 360-degree projection and portrait mode. The external power supply increases reliability and makes mounting on the ceiling or in tight enclosures easier. For administrators, the Optoma Management Suite (OMS) makes life much easier: this cloud-based solution lets you monitor, control and schedule multiple projectors in real time. This minimises downtime and enables central support without physical access to the unit. An integrated 15-watt speaker and a wide range of connection options including RS232 round off the professional package for your IT infrastructure.

Our verdict: why the Optoma ZH451ST is the ideal choice for your business premises
The Optoma ZH451ST combines bright Full HD performance with extreme compactness. With its short-throw lens and low-maintenance laser source rated for 30,000 hours of operation, you get a tool that lowers your operating costs and raises your presentation quality. Whether in a cramped meeting room or bright education centres, this model impresses with reliability and easy integration. As certified specialist advisers, we will be happy to support you in planning your project. Benefit from our experience for your perfect AV setup. Contact us for personal advice!
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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ApplicationBusiness 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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ISO 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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Projection and lens
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Projection distanceShort throw
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Throw ratio0.496 : 1
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Throw distance0.4 to 3.2 m
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Lens included in deliveryYes
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Connections and wireless
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Inputs1x 3.5 mm jack, 1x Ethernet, 1x RS232, 1x VGA, 2x HDMI
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Outputs1x 3.5 mm jack, 2x USB-A
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Wireless technologyWi-Fi optional
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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)27.4 × 11.4 × 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 deliveryBatteries, User manual, Power cable, Remote control
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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 Optoma ZH451ST
Optimal setup for Optoma ZH451ST
More settings
Aspect ratioLaser TV / ultra short throw: distance is measured from the light exit (slot on top of the device) to the screen. Best placed on a small table or low sideboard directly below the screen.
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
Optoma
EU responsible person
Optoma Deutschland GmbHAm Nordpark 3
41069 Mönchengladbach
Germany
Contact
E-Mail: info@optoma.de








