Optoma · 3,000–4,999 lumens · 4K
Optoma UHD35STx
3,600lumens
3840×2160native
0.5–0.5throw ratio
3.5 kgweight
The Optoma UHD35STx is a 0.65" DLP x 1 projector rated at 3,600 lumens with a native resolution of 3840×2160. It uses a 240w metal halide bulb light source rated for 4,000 hours / 15,000 hours (Eco). Its lens has a throw ratio of 0.5:1. Released September 2022.
Throw distance table
Distance from lens to surface for each image width (16:9 (4K HD)). Calculated as throw ratio × width; check the manufacturer's lens calculator before installation.
| Image width | Height | Standard lens 0.5:1 |
|---|---|---|
| 2 m (6.6 ft) | 1.12 m | 1.0 m |
| 3 m (9.8 ft) | 1.69 m | 1.5 m |
| 4 m (13.1 ft) | 2.25 m | 2.0 m |
| 5 m (16.4 ft) | 2.81 m | 2.5 m |
| 6 m (19.7 ft) | 3.38 m | 3.0 m |
| 8 m (26.2 ft) | 4.5 m | 4.0 m |
| 10 m (32.8 ft) | 5.62 m | 5.0 m |
| 12 m (39.4 ft) | 6.75 m | 6.0 m |
| 15 m (49.2 ft) | 8.44 m | 7.5 m |
| 20 m (65.6 ft) | 11.25 m | 10.0 m |
| 25 m (82.0 ft) | 14.06 m | 12.5 m |
| 30 m (98.4 ft) | 16.88 m | 15.0 m |
Open in the throw-distance calculator →
Maximum image size for projection mapping
Largest image that keeps a 10:1 contrast against ambient light on a light, matte surface (80% optical efficiency). See how this is calculated.
| Ambient light | Max area | Max width × height |
|---|---|---|
| Dark rural site (1 lux) | 320 m² | 23.9 × 13.4 m |
| Quiet street at night (5 lux) | 64 m² | 10.7 × 6.0 m |
| Lit city square (15 lux) | 21 m² | 6.2 × 3.5 m |
| Bright urban area (30 lux) | 11 m² | 4.4 × 2.4 m |
| Indoor, lights dimmed (50 lux) | 6 m² | 3.4 × 1.9 m |
Full specifications
| 3D Modes | Full HD 3D |
|---|---|
| Aspect Ratio | 16:9 (4K HD) |
| Audible Noise | 28 dB / 24 dB (Eco) |
| Best Used For | Home Theater Gaming |
| Brightness | 3,600 Lumens (ANSI) 1 |
| Color Processing | 8-bit |
| Connection Panel | 12-Volt Trigger Audio Out: Mini Jack Audio Out: Optical HDMI 2.0 x 2 RS232: DB-9pin USB: A |
| Data Modes | MAX 3840x2160 |
| Digital Keystone | Horizontal & Vertical |
| Digital Zoom | Yes |
| Display Type | 0.65" DLP x 1 |
| Features | Short-Throw Full HD 3D Geometric Correction HDR HDMI CEC Blackboard Mode |
| Image Size | 36.62" - 300.15" |
| Included Lens | Fixed focal length , manual focus |
| Input Lag | 4K/60: 16.9ms | 1080p/240: 4.2ms |
| Internal Speakers | 10.0 Watts Mono |
| Lens Shift | No |
| Light Source | 240W Metal Halide bulb |
| Light Source Life | 4,000 hours / 15,000 hours (Eco) |
| MSRP | $2,699 (USD) |
| Power | 320 Watts 100V - 240V |
| Projector Size | 4.65" x 12.40" x 10.63" (HxWxD) |
| Released | September 2022 |
| Resolution | 3840x2160 |
| Status | Shipping |
| Street Price | $1,399 (USD) |
| Throw Distance | 1.3' - 10.9' Calculate Throw Distance |
| Throw Ratio | 0.50:1 (D:W) |
| Video Modes | 720p, 1080i, 1080p/60, 1080p/24, 1080p/50, 2160p/24, 2160p/60, 576i, 576p, 480p, 480i |
| Warranty | 1 Year |
| Weight | 7.7 lbs |
Specifications compiled from ProjectorCentral and manufacturer data. Prices change — verify with dealers.
Similar projectors
| Model | Lumens | Resolution | Light source | Throw ratio | Street price |
|---|---|---|---|---|---|
| Optoma UHD35x | 3,600 | 3840×2160 | 240W Metal Halide bulb | 1.5–1.66:1 | $999 |
| Optoma UHZ35 | 3,500 | 3840×2160 | Laser Phosphor | 1.4–2.24:1 | $1,399 |
| Optoma UHZ35ST | 3,500 | 3840×2160 | Laser Phosphor | 0.5:1 | $2,199 |
| Optoma UHZ36 | 3,500 | 3840×2160 | Laser Phosphor | 1.21–1.59:1 | $1,079 |
| ViewSonic LX700-4K | 3,500 | 3840×2160 | Laser Phosphor | 1.06–1.45:1 | $1,239 |
| Epson LS7500 | 3,500 | 3840×2160 | Laser Phosphor | 1.0–1.31:1 | $2,700 |
| Optoma GT3900UHD | 4,000 | 3840×2160 | Laser Phosphor | 0.5:1 | $1,499 |
| Optoma UHZ66 | 4,000 | 3840×2160 | Laser Phosphor | 1.4–2.24:1 | $1,895 |