True 4K UHD detail, short-throw installation and long-life laser performance for premium indoor golf.

The Optoma ZK431ST 4K Short Throw Golf Simulator Projector combines a sharp 3840 x 2160 image, 4,100-lumen output and a compact 0.496:1 fixed short-throw lens. Selected by Golf & Greens for space-conscious simulator rooms, it can create a large, detailed image while mounting significantly closer to the impact screen than a conventional projector.

Its responsive 4K performance, DuraCore laser light source, IP6X-rated optical engine and professional control options make it a strong choice for premium home simulators, coaching studios and selected commercial golf installations.

⛳ Why Choose the Optoma ZK431ST?

• True 4K UHD resolution: 3840 x 2160 pixels for sharp course textures, readable shot data and detailed simulator interfaces.
• 4,100-lumen laser output: delivers a bright image in indoor golf rooms with controlled ambient lighting.
• 0.496:1 short-throw ratio: creates a large projected image from a short lens-to-screen distance.
• Low input lag: approximately 16.7ms at 4K/60Hz and 8.6ms at 1080p/120Hz for responsive shot feedback.
• Up to 30,000 hours of laser life: designed for long-term use without regular lamp replacement.
• Compact and lightweight: approximately 2.9kg for easier integration into ceiling-mounted simulator installations.
• Professional reliability: IP6X dust resistance, 24/7 operation and 360-degree installation support.
• Flexible control: RJ45, RS232 and 12V trigger connections for home and professionally managed installations.

📐 Short-Throw Projection for Compact Simulator Rooms

The fixed 0.496:1 throw ratio allows the ZK431ST to project a wide image from a relatively short distance. Positioning the projector closer to the screen can reduce player shadows, keep the unit away from the main hitting area and preserve valuable room depth.

Use the following calculation as an initial guide:

Lens-to-screen distance = projected image width x 0.496

For example, a projected image measuring 3.00m wide requires an estimated lens-to-screen distance of approximately 1.49m.

Important: this model has a fixed lens with no optical zoom or lens shift. Final positioning must also account for the image height, native offset, screen aspect ratio, projector body, ceiling height, enclosure structure and hitting position. Confirm the full room geometry before drilling or installing the ceiling mount.

🖥️ Detailed 4K Visuals for Indoor Golf

The ZK431ST displays a true 4K UHD image with more than eight million pixels on screen. Fairways, greens, ball-flight graphics and performance data appear crisp and easy to read, particularly when paired with a 4K-capable simulator computer and a high-quality impact screen.

Its native 16:9 format suits modern golf simulator software and widescreen installations. Compatible display modes also include 4:3 and 16:10, helping the projector adapt to different screen proportions and room layouts.

HDR and HLG signal compatibility help preserve detail across bright skies, shaded areas and contrasting course environments. Final image quality will depend on the impact screen, image size, room lighting, source computer, software resolution and projector settings.

🔆 Bright Laser Performance with Controlled Lighting

With a manufacturer-rated output of 4,100 lumens, the Optoma ZK431ST provides strong brightness for premium home simulators and professional bays where ambient light is managed around the projection surface.

For the best contrast and colour depth, avoid directing spotlights or daylight onto the impact screen. Larger images and brighter commercial environments may require a higher-output projector, so the intended image dimensions and lighting conditions should always be reviewed before purchase.

⚡ Responsive Shot Feedback

Low display delay helps the projected ball flight appear quickly after impact, creating a more natural connection between the golfer's swing and the simulator response.

• 4K at 60Hz: approximately 16.7ms input lag
• 1080p at 60Hz: approximately 16.7ms input lag
• 1080p at 120Hz: approximately 8.6ms input lag

For the lowest possible latency, position the projector accurately and minimise digital correction. Some image-processing or geometric-adjustment functions may be unavailable or limited when low-latency settings are active.

🛡️ Long-Life DuraCore Laser Technology

The DuraCore laser light source is rated for up to 30,000 hours in Eco mode, removing the routine lamp replacements associated with traditional projectors. Instant start-up, consistent operation and a sealed IP6X-rated optical engine help make the ZK431ST suitable for regular home practice and demanding professional use.

Support for 24/7 operation and 360-degree installation also gives installers greater flexibility when integrating the projector into coaching studios, golf clubs and commercial simulator venues.

🛠️ Alignment and Professional Control

• Horizontal keystone correction: ±15°
• Vertical keystone correction: ±15°
• Four-corner image correction
• Front, rear and ceiling projection
• 360-degree installation capability
• RJ45 network control
• RS232 system control
• 12V trigger connection
• Optoma Management Suite compatibility
• Optoma Smart Control App compatibility

Digital correction is useful for final adjustment, but accurate physical placement remains the best way to maintain image sharpness, geometry and low latency.

⚙️ Technical Specifications

Model	Optoma ZK431ST
Product type	4K UHD short-throw laser projector
Display technology	DLP
Native resolution	4K UHD 3840 x 2160
Brightness	4,100 lumens
Contrast ratio	300,000:1
Dynamic contrast ratio	2,000,000:1
Native aspect ratio	16:9
Compatible aspect ratios	4:3, 16:9, 16:10, Full, Auto and Native
Light source	DuraCore laser
Light source life	Up to 30,000 hours in Eco mode
Throw ratio	0.496:1 fixed short throw
Projection distance	Approximately 0.4m to 3.3m, subject to image size and installation geometry
Projected image size	Approximately 30 to 300 inches diagonal
Optical zoom	None, fixed lens
Lens shift	None
Focal length	7.51mm
Native offset	Approximately 114%
Keystone correction	Horizontal ±15° and vertical ±15°
Geometric correction	Four-corner correction
HDR compatibility	HDR and HLG
Input lag	Approximately 16.7ms at 4K/60Hz and 8.6ms at 1080p/120Hz
Noise level	Approximately 29dB minimum / 35dB maximum
Dust resistance	IP6X-rated optical engine
Operating capability	24/7 and 360-degree operation supported
Video inputs	2 x HDMI 2.0
Outputs	2 x USB-A 2.0, 1 x 3.5mm audio output and 1 x 3D sync output
Control connections	1 x RJ45, 1 x RS232 and 1 x 12V trigger
Built-in speaker	1 x 15W
Power consumption	Approximately 124W in Eco mode and 178W in Bright mode
Dimensions	Approximately 274 x 216 x 114mm including feet
Net weight	Approximately 2.9kg
Gross packaged weight	Approximately 4.3kg
Colour	White
Manufacturer part number	E3P7PN1E116
EAN / GTIN-13	5055387669680

Specifications are based on the European Optoma ZK431ST configuration and may be updated by the manufacturer. Check the supplied documentation before permanent installation.

📦 What Is Included?

• Optoma ZK431ST 4K UHD short-throw laser projector
• AC power cable
• Remote control
• 2 x AAA batteries
• Quick-start documentation

Not Included

• Projector ceiling mount
• HDMI cable
• Golf simulator computer
• Launch monitor
• Golf simulator software or subscription
• Impact screen or enclosure
• Professional installation unless separately quoted

📘 Optoma ZK431ST User Manual

Review the complete manual before installation for safety requirements, ventilation clearances, connection diagrams, compatible signals, image settings, ceiling mounting and control functions.

Download the Optoma ZK431ST User Manual (PDF)

✅ Why Buy Your Projector from Golf & Greens?

A projector can meet every specification on paper and still be wrong for the room. Screen width, screen height, image ratio, ceiling height, enclosure depth, hitting position, ambient light and cable routing all influence the final result.

Golf & Greens can help match the ZK431ST with the correct impact screen, golf simulator enclosure, computer, mount and cabling for a coherent indoor golf installation.

• Specialist advice for home and commercial golf simulator projects
• Throw-distance and mounting-position guidance
• Compatibility checks based on your room and screen dimensions
• Support in English and French
• European delivery and complete project assistance

Explore the complete golf simulator projector collection or browse our Golf Simulator Tech & Equipment.

❓ Frequently Asked Questions

Is the Optoma ZK431ST suitable for golf simulators?

Yes. Its true 4K UHD resolution, 4,100-lumen laser output, fixed short-throw lens and low input lag make it a strong option for premium home simulators, coaching studios and selected commercial golf bays with controlled lighting.

Is the ZK431ST a short-throw or ultra-short-throw projector?

It is a fixed short-throw projector with a 0.496:1 throw ratio. It mounts much closer to the screen than a standard projector, but it should not be installed in the same position as a conventional ultra-short-throw unit placed immediately beside the screen.

How far should the projector be from the impact screen?

Multiply the projected image width by 0.496 for an initial lens-to-screen estimate. A 3.00m-wide image requires approximately 1.49m. The final mounting position must also consider the image height, aspect ratio, native offset, projector dimensions and ceiling structure.

Does the projector have optical zoom or lens shift?

No. The ZK431ST has a fixed lens without optical zoom or lens shift. Accurate measurement and physical alignment are therefore essential before permanent installation.

Is 4,100 lumens enough for an indoor golf simulator?

It is suitable for many premium home and professional rooms with controlled ambient lighting. Image size, screen material and direct light falling on the impact screen will affect perceived brightness and contrast. Larger or brightly lit commercial installations may benefit from a higher-output projector.

Can the ZK431ST display golf simulator software in 4K?

Yes, when connected to a compatible 4K simulator computer through HDMI and configured with a 3840 x 2160 output. The simulator software, graphics card, cable and selected display settings must also support 4K resolution.

Can the projector be ceiling mounted?

Yes. It supports ceiling projection and 360-degree installation. Use a compatible mount, preserve the ventilation clearances specified in the manual and confirm the complete image geometry before drilling.

Can Golf & Greens confirm whether it fits my room?

Yes. Provide the screen width, screen height, room depth, ceiling height, hitting position and preferred image ratio. Our team can assess the throw distance and help determine whether the ZK431ST is appropriate for your setup.

💬 Plan Your Project with Golf & Greens

Before ordering, confirm the visible screen dimensions, aspect ratio, available mounting distance, ceiling height and room lighting. This prevents costly repositioning and ensures that the projector is matched to the complete simulator.

Book a Free Consultation or discover our complete golf simulator project service.