The Optoma ZK521ST-B is a 5,000-lumen 4K UHD short-throw laser projector built for golf simulators that need to push light through a screen even when the room lights are on. True 4K resolution keeps fairway texture, ball flight, and on-screen data crisp. A 0.79:1 throw ratio handles tight ceilings and short hitting distances without compromising image size.
5,000 Lumens
High output keeps the image vivid in bays with bright LED lighting, large windows, or open commercial space — no need to black out the room.
True 4K UHD
3840 × 2160 native resolution holds course textures, simulator overlays, and tracer data sharp at screen sizes up to 300″.
0.79:1 Short Throw
A fixed short-throw lens fills a 10ft wide screen from about 8 feet away, cutting shadows on the hitter and freeing up ceiling space.
30,000-Hour Laser
DuraCore laser light source is rated up to 30,000 hours in Eco mode — over a decade of normal residential use with no lamp swaps.
8.4ms Input Lag
Input lag drops to 8.4ms at 1080p/120Hz and 16.7ms at 4K/60Hz, keeping ball-strike response tight in fast simulator software.
24/7 Operation
Rated for continuous 24/7 use, making the ZK521ST-B a fit for commercial sim bays, training studios, and entertainment venues.
Optoma Smart Fit
Smart Fit alignment in the Optoma Smart Control app uses a phone photo of the screen to auto-calculate geometry and four-corner correction — no ladder, no remote-button keystone hunt.
Dedicated Golf Sim Mode
Optoma’s Golf Sim Mode tunes color, contrast, and response for simulator gameplay — brighter blue skies, deeper shadows, natural greens, and faster on-screen response. One-touch from the remote.
Who Is It Best For?
- Premium residential simulator rooms with ambient light
- Commercial bays running long daily sessions
- Tight ceilings needing a short-throw fixed lens
- Bays already running 4K launch monitor software
- Builders prioritizing rated laser life over zoom range
- Installations where 24/7 reliability matters
