Optoma ZK431ST-B 4100-Lumens 4K UHD Short Throw Golf Simulator Projector

The Optoma ZK431ST-B is a true 4K UHD DuraCore laser projector built for the demands of indoor golf. It pairs 8.3 million pixels with a bright 4,100-lumen laser engine, rendering fairways, greens, and ball flight with sharp detail and natural colour on screens up to 300 inches. Its sleek black chassis is designed to disappear into a simulator bay while delivering a vivid, true-to-life picture.

A 0.496:1 short-throw lens lets the projector sit close to the impact screen, which reduces shadows and frees up usable hitting area in tight rooms. A dedicated Golf Sim colour mode tunes blue skies, deep shadows, and grass-green tones for realistic courses, while Smart Fit uses your smartphone camera to detect the screen frame and automatically correct image alignment in seconds.

The DuraCore laser light source runs maintenance-free for up to 30,000 hours with instant on and off and no lamps to replace. Four-corner adjustment, plus or minus 15 degree keystone correction, dual HDMI 2.0 inputs, and low input lag down to 8.6 ms make it equally at home for golf simulation, gaming, and big-screen entertainment.

What's Included:

• Optoma ZK431ST-B 4100-Lumens 4K UHD Short Throw Golf Simulator Projector
• AC Power Cord
• Remote Control
• (2) AAA Batteries
• Quick Start User Manual

Features

True 4K UHD Resolution
Renders 8.3 million pixels for sharp course graphics and legible simulator data, four times the detail of Full HD.

DuraCore Laser Light Source
A maintenance-free laser engine delivers consistent brightness and colour for up to 30,000 hours with instant on and off and no lamps to replace.



Golf Sim Colour Mode
A dedicated picture mode tunes brighter blue skies, deeper shadows, and natural green grass tones for realistic course rendering.



Short-Throw 0.496:1 Lens
Projects a large image from just over a metre away, letting the projector sit close to the screen to reduce shadows and club interference in tight sim rooms.



Smart Fit Auto-Alignment
Uses your smartphone camera to detect the screen frame and automatically correct image alignment, cutting installation time.



Four-Corner and Keystone Correction
Tap and drag any corner, with plus or minus 15 degree horizontal and vertical keystone, to square the image to any impact screen.

Brilliant 4,100 Lumens
High laser brightness keeps fairways, greens, and ball flight vivid and true-to-life even in rooms with some ambient light.

Flexible Connectivity and Control
Dual HDMI 2.0 inputs, USB-A, RJ45 LAN, RS232, and a 12V trigger support gaming consoles, media players, and integrated installs.

What's Included

Included with your purchase:

• Optoma ZK431ST-B 4100-Lumens 4K UHD Short Throw Golf Simulator Projector
• AC Power Cord
• Remote Control
• (2) AAA Batteries
• Quick Start User Manual

Specifications

Display Performance:

• Display Technology: DLP
• Native Resolution: 4K UHD (3840 x 2160)
• Brightness: 4,100 lumens
• Contrast Ratio: 300,000:1
• Dynamic Contrast: 2,000,000:1
• Native Aspect Ratio: 16:9
• Compatible Aspect Ratios: 4:3, 16:9, 16:10, 1:1
• Keystone Correction Horizontal: +/-15°
• Keystone Correction Vertical: +/-15°
• Four-Corner Correction: Yes
• Uniformity: 75%
• Screen Size: 30" - 300" diagonal
• Horizontal Scan Rate: 15 - 150 kHz
• Vertical Scan Rate: 24 - 240 Hz

Light Source:

• Light Source Type: Laser (DuraCore)
• Laser Life: 30,000 hours

Projection Optics:

• Throw Ratio: 0.496:1
• Focal Length: 7.51 mm
• Zoom Type: Fixed
• Native Offset: 114%

Connectivity:

• Inputs: (2) HDMI 2.0, (1) VGA In
• Outputs: (2) USB-A 2.0, (1) 3D Sync Out, (1) Audio 3.5mm
• Control: (1) RJ45, (1) RS232, (1) 12V Trigger

General:

• Speaker: 1 x 15W
• Noise Level: 29 dB(A)
• Input Lag: 16.7 ms (4K/60Hz), 8.6 ms (1080p/120Hz)
• 3D: Full 3D (HDMI 1.4a)
• 24/7 Operation: Yes
• 360° Operation: Yes
• Security: Security bar, Kensington Lock, password protected interface
• Software: Optoma Management Suite (OMS), Smart Control App
• In the Box: AC power cord, remote control, (2) AAA batteries, quick start user manual

Power:

• Power Supply: AC 100V - 240V, 50-60Hz
• Power Consumption (Standby): <0.5W
• Power Consumption (Eco): 125W
• Power Consumption (Bright): 178W

Weight and Dimensions:

• Dimensions: 21.6 cm (8.5"W) x 27.4 cm (10.8"D) x 10.9 cm (4.3"H)
• Net Weight: 2.9 kg (6.3 lbs)
• Gross Weight: 4.3 kg (9.4 lbs)

FAQ

Q: How long does the laser light source last?
A: The DuraCore laser is rated for up to 30,000 hours of maintenance-free operation, so there are no lamps to replace.

Q: Is the short throw a good fit for a golf simulator?
A: Yes. The 0.496:1 short-throw lens projects a large image from just over a metre away, so the projector sits close to the screen and reduces shadows and club interference.

Q: What is Smart Fit?
A: Smart Fit uses your smartphone camera to detect the screen frame and automatically align and correct the projected image, which speeds up installation.

Q: Does it have a dedicated golf picture mode?
A: Yes. Golf Sim colour mode tunes blue skies, shadows, and grass-green tones for realistic course rendering with simulator software such as GSPro.

Q: What is the input lag for gaming?
A: Input lag is 8.6 ms at 1080p 120Hz and 16.7 ms at 4K 60Hz for responsive gameplay.

Q: Will it fill my impact screen?
A: Multiple aspect ratios, four-corner adjustment, and plus or minus 15 degree keystone correction let you square the image to virtually any impact screen.

Resources

Documents:

• Optoma ZK431ST-B Datasheet
• Optoma Smart Control App - Setup Guide