ViewSonic
ViewSonic LS832WU WUXGA Ultra Short Throw Laser Projector
WUXGA80-170"
£2,419.08inc. VAT
Out of stock
Optoma
Optoma ZK451 Compact 4K UHD DuraCore Laser Projector
£2,474.99inc. VAT
£2,062.49 ex. VAT
Out of stock
1
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Bought in the UK, backed in the UKWhy it matters →
- Sourced through UK distribution
- UK manufacturer warranty
- UK-based engineers
- No import duty or customs charges
- GBP pricing, UK VAT invoices
Key specifications
Display technologyDLP
Resolution4K UHD (3840x2160)
ISO 21118 brightness4500 lm
Contrast ratio300,000:1
Native aspect ratio16:9
Aspect ratio - compatible4:3, 16:9, 16:10, 21:9, 32:9
Input compatibilityHDR and HLG compatible
Light sourceDuraCore Laser
Description
The Optoma ZK451 is a compact true 4K UHD DuraCore laser projector delivering 4,500 ISO lumens at native 3840x2160, in a chassis up to 34% smaller than previous Optoma models. It brings genuine 4K resolution into a business projector form factor rather than requiring an installation-class body.
HDR and HLG compatibility widen the dynamic range on supported content, and aspect ratio support extends to 21:9 and 32:9 as well as the usual formats, which suits wide collaboration displays and simulation work.
The DuraCore laser light source is rated for 30,000 hours with no lamp replacements, cutting power consumption by up to 45% against an equivalent Optoma lamp projector.
A 1.6x zoom spanning 1.4:1 to 2.24:1 throw ratios gives unusual placement freedom, covering 30 to 300 inch screens at 0.93m to 9.3m, with 360-degree and portrait projection.
Optoma Management Suite (OMSC) provides remote monitoring and scheduling, and the Smart Control app handles setup from a mobile device. Connectivity includes dual HDMI 2.0 with one eARC port.
Key features
True 4K UHD laser projection
4,500 ISO lumens at native 3840x2160 with HDR and HLG compatibility.
Flexible installation
1.6x zoom spanning 1.4:1 to 2.24:1 with 360-degree and portrait projection.
Ultra-wide aspect ratio support
Supports 21:9 and 32:9 alongside standard formats for wide collaboration displays.
Optoma Management Suite (OMSC)
Remote management, real-time monitoring and scheduling across multiple projectors.
Optoma Smart Control app
Command, control and correct the image from a phone or tablet.
30,000 hour laser life
DuraCore laser rated for 30,000 hours with up to 45% lower power draw.
Technical specifications
Choose a section to view its specifications.
Display (8)
- Display technology
- DLP
- Resolution
- 4K UHD (3840x2160)
- ISO 21118 brightness
- 4500 lm
- Contrast ratio
- 300,000:1
- Native aspect ratio
- 16:9
- Aspect ratio - compatible
- 4:3, 16:9, 16:10, 21:9, 32:9
- Screen size
- 0.76m - 7.62m (30in - 300in) diagonal
- Refresh rate
- Up to 240Hz
Connectivity (3)
- Input compatibility
- HDR and HLG compatible
- Inputs
- 1x HDMI 2.0, 1x HDMI 2.0 (eARC)
- Outputs
- 1x audio 3.5mm, 2x USB-A power 1.5A
Certifications & Warranty (1)
- Warranty
- 12 months
General (11)
- Light source
- DuraCore Laser
- Laser life
- 30000 hours
- Throw ratio
- 1.4:1 - 2.24:1
- Projection distance
- 0.93m - 9.3m
- Zoom
- 1.6x manual
- Focal length
- 20.91 - 32.62 mm
- Native offset
- 116%
- Keystone correction
- +/-30 degrees horizontal and vertical
- Orientation
- 360-degree and portrait projection
- Control
- RS232, RJ45, 12V trigger, 3D sync, OMSC
- Uniformity
- 80%
Throw distance guide
With its 1.4 to 2.24:1 throw ratio, here's how far the projector needs to sit from the screen for common 16:9 image sizes. Try our throw distance calculator for your exact room.
Supported image: 30″ to 300″ diagonalLens distance: 0.93 to 9.3 m
Try a size
100"
16:9 diagonal image
Image
2.21 m × 1.25 m
Lens position
3.1 m to 5.0 m
Side view: drag the projector to try its available lens positions
Position fits
Manufacturer lens-distance limit: 0.9 m to 9.3 m. The dotted lines show the usable zoom positions for this picture size.
| Image size | Image dimensions | Lens distance range |
|---|---|---|
| 40" | 0.89 m × 0.50 m | 1.2 m to 2.0 m |
| 60" | 1.33 m × 0.75 m | 1.9 m to 3.0 m |
| 80" | 1.77 m × 1.00 m | 2.5 m to 4.0 m |
| 100" | 2.21 m × 1.25 m | 3.1 m to 5.0 m |
| 120" | 2.66 m × 1.49 m | 3.7 m to 6.0 m |
| 150" | 3.32 m × 1.87 m | 4.6 m to 7.4 m |
| 200" | 4.43 m × 2.49 m | 6.2 m to 9.3 m |
| 250" | 5.53 m × 3.11 m | 7.7 m to 9.3 m |
| 300" | 6.64 m × 3.74 m | 9.3 m to 9.3 m |
Planning from a real wall? Use the projector screen size calculator to upload a photo, preview the image to scale and find projectors that fit within your maximum available space. Replacing an existing projector? The projector replacement calculator checks whether this lens covers the ratio your current mount needs.
Distances are lens-to-screen, calculated from the manufacturer's stated throw ratio; allow for lens shift and mounting hardware. Always confirm against the manufacturer's installation guide before fixing mounts.
See it on your wall, to scale
Choose a picture size, then upload a wall photo, or scan the QR code and take it on your phone. We'll show the projected picture at its real size.
Picture size
100" 16:9 · 2.21 m × 1.25 m
On a computer, the QR code sends your phone photo straight back to this page.
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Complete your setup
Optional extras that fit this product. Tick anything you need and it joins the same basket — or add this product on its own from the buy box above.
Choose a Mount
Choose a Screen
Video Conferencing
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Professional Installation
Want it installed by our AV experts? We offer professional on-site installation including mounting, cable management, and system configuration.
Your Configuration
Optoma ZK451 Compact 4K UHD DuraCore Laser Projector × 1£2,474.99
Total£2,474.99
inc. VAT
1
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Delivery & returns
Estimated delivery 5 Nov - 9 Nov. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.
Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.
Bought in the UK, backed in the UK
This item is sourced through UK distribution and ships to you from within the UK, so the order never crosses a customs border.
The manufacturer warranty is honoured here in the UK. If something fails, you deal with us, not with an overseas seller in another time zone.
Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.
Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.
Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts: no currency conversion and no surprises at the door.
Payment & security
Pay securely by card. Education customers can apply for a 30-day purchase order account.
Schools, colleges, sixth forms, universities and multi-academy trusts can order on invoice, with no card payment required. Purchase orders and credit terms are for education customers only.
All transactions are processed over an encrypted, secure checkout.
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