BenQ · 3,000–4,999 lumens · Full
BenQ LH820ST
3,600lumens
1920×1080native
0.5–0.5throw ratio
5.6 kgweight
The BenQ LH820ST is a DLP x 1 projector rated at 3,600 lumens with a native resolution of 1920×1080. It uses a laser phosphor light source rated for 20,000 hours / 30,000 hours (Eco). Its lens has a throw ratio of 0.5:1. Released June 2023.
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) | 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 (HD) |
| Audible Noise | 33 dB / 29 dB (Eco) |
| Best Used For | K-12 Education Corporate/Business Golf Simulator |
| Brightness | 3,600 Lumens (ANSI) 1 |
| Color Processing | 10-bit |
| Connection Panel | Audio In: Mini Jack Audio Out: Mini Jack Composite: RCA HDMI 1.4b x 2 RS232: DB-9pin S-Video USB: A x 2 VGA In: Dsub-15pin x 2 VGA Out: Dsub-15pin |
| Data Modes | MAX 1920x1080 |
| Digital Keystone | Horizontal & Vertical |
| Digital Zoom | Yes |
| Display Type | DLP x 1 |
| Features | Short-Throw Closed Captioning Full HD 3D Edge Blending |
| Image Size | 21.75" - 220.02" |
| Included Lens | Fixed focal length , manual focus |
| Input Lag | 1080p/60: 16.7ms |
| Internal Speakers | 10.0 Watts Mono |
| Lens Shift | No |
| Light Source | Laser Phosphor |
| Light Source Life | 20,000 hours / 30,000 hours (Eco) |
| MSRP | $1,899 (USD) |
| Power | 315 Watts 100V - 240V |
| Projector Size | 6.15" x 15.90" x 10.60" (HxWxD) |
| Released | June 2023 |
| Resolution | 1920x1080 |
| Status | Shipping |
| Street Price | $1,899 (USD) |
| Throw Distance | 0.8' - 8.0' Calculate Throw Distance |
| Throw Ratio | 0.50:1 (D:W) |
| Video Modes | 720p, 1080i, 1080p/60 |
| Weight | 12.3 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 LH856UST | 3,500 | 1920×1080 | Laser Phosphor | 0.34:1 | $2,299 |
| Epson Europe EB-U42 | 3,600 | 1920×1200 | 210W UHE bulb | 1.38–1.68:1 | |
| Optoma HD146X | 3,600 | 1920×1080 | 240W Metal Halide bulb | 1.47–1.62:1 | $499 |
| Epson EpiqVision Ultra LS650-B | 3,600 | 1920×1080 | Laser Phosphor | 0.28:1 | $2,500 |
| Epson EpiqVision Ultra LS650-W | 3,600 | 1920×1080 | Laser Phosphor | 0.28:1 | $2,499 |
| Epson Lifestudio Grand B | 3,600 | 1920×1080 | Laser Phosphor | 0.25:1 | $2,700 |
| Epson Lifestudio Grand W | 3,600 | 1920×1080 | Laser Phosphor | 0.25:1 | $2,700 |
| BenQ EU610ST | 3,800 | 1920×1200 | Metal Halide bulb | 0.9–1.08:1 | $1,455 |