BenQ · 3,000–4,999 lumens · Full
BenQ LH850ST
4,000lumens
1920×1080native
0.5–0.5throw ratio
5.8 kgweight
The BenQ LH850ST is a DLP x 1 projector rated at 4,000 lumens with a native resolution of 1920×1080. It uses a laser phosphor light source rated for 20,000 hours / 38,000 hours (Eco). Its lens has a throw ratio of 0.5:1. Released December 2024.
Throw distance table
Distance from lens to surface for each image width (16:9 (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) | 356 m² | 25.1 × 14.1 m |
| Quiet street at night (5 lux) | 71 m² | 11.2 × 6.3 m |
| Lit city square (15 lux) | 24 m² | 6.5 × 3.7 m |
| Bright urban area (30 lux) | 12 m² | 4.6 × 2.6 m |
| Indoor, lights dimmed (50 lux) | 7 m² | 3.6 × 2.0 m |
Full specifications
| 3D Modes | Full HD 3D |
|---|---|
| Aspect Ratio | 16:9 (HD) |
| Audible Noise | 35 dB / 32 dB (Eco) |
| Best Used For | Digital Signage Museum/Exhibits Simulation |
| Brightness | 4,000 Lumens (ANSI) 1 |
| Color Processing | 10-bit |
| Connection Panel | Audio Out: Mini Jack HDMI 2.0 (HDCP 2.2) x 2 Network: RJ-45 RS232: DB-9pin USB: A x 2 |
| Data Modes | MAX 3840x2160 |
| Digital Keystone | Horizontal & Vertical |
| Digital Zoom | Yes |
| Display Type | DLP x 1 |
| Features | Short-Throw 24/7 Operation Full HD 3D Edge Blending Geometric Correction HDR |
| Image Size | 30.01" - 120.33" |
| Included Lens | Fixed focal length , Powered focus |
| Input Lag | 1080p/60: 16.7ms | 1080p/120: 8.3ms |
| Internal Speakers | 10.0 Watts Mono |
| Lens Shift | No |
| Light Source | Laser Phosphor |
| Light Source Life | 20,000 hours / 38,000 hours (Eco) |
| MSRP | $1,999 (USD) |
| Power | 250 Watts 100V - 240V |
| Projector Size | 5.14" x 12.60" x 10.11" (HxWxD) |
| Released | December 2024 |
| Resolution | 1920x1080 |
| Status | Shipping |
| Street Price | $1,999 (USD) |
| Throw Distance | 1.1' - 4.4' Calculate Throw Distance |
| Throw Ratio | 0.50:1 (D:W) |
| Video Modes | 720p, 1080i, 1080p/60 |
| Warranty | 3 Years |
| Weight | 12.8 lbs |
Specifications compiled from ProjectorCentral and manufacturer data. Prices change — verify with dealers.
Similar projectors
| Model | Lumens | Resolution | Light source | Throw ratio | Street price |
|---|---|---|---|---|---|
| BenQ AH700ST | 4,000 | 1920×1080 | Laser Phosphor | 0.69–0.83:1 | $2,299 |
| BenQ AH500ST | 4,000 | 1920×1080 | Laser Phosphor | 0.5:1 | $1,999 |
| BenQ EH700 | 4,000 | 1920×1080 | Laser Phosphor | 1.15–1.5:1 | $2,099 |
| BenQ LH650 | 4,000 | 1920×1080 | Laser Phosphor | 1.15–1.5:1 | $1,449 |
| BenQ LH730 | 4,000 | 1920×1080 | LED | 1.3–1.56:1 | $1,795 |
| BenQ LH830ST | 4,000 | 1920×1080 | Laser Phosphor | 0.5:1 | $1,999 |
| BenQ LH835ST | 4,000 | 1920×1080 | Laser Phosphor | 0.69–0.83:1 | |
| BenQ MH733 | 4,000 | 1920×1080 | 240W Metal Halide bulb | 1.15–1.5:1 | $1,000 |