Optoma · Under 3,000 lumens · 4K
Optoma UHD51A
2,400lumens
3840×2160native
1.21–1.59throw ratio
5.4 kgweight
The Optoma UHD51A is a 0.47" DLP x 1 projector rated at 2,400 lumens with a native resolution of 3840×2160. It uses a 240w p-vip bulb light source rated for 4,000 hours / 15,000 hours (Eco). Its lens has a throw ratio of 1.21–1.59:1. Released May 2018.
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 1.21–1.59:1 |
|---|---|---|
| 2 m (6.6 ft) | 1.12 m | 2.4–3.2 m |
| 3 m (9.8 ft) | 1.69 m | 3.6–4.8 m |
| 4 m (13.1 ft) | 2.25 m | 4.8–6.4 m |
| 5 m (16.4 ft) | 2.81 m | 6.0–8.0 m |
| 6 m (19.7 ft) | 3.38 m | 7.3–9.5 m |
| 8 m (26.2 ft) | 4.5 m | 9.7–12.7 m |
| 10 m (32.8 ft) | 5.62 m | 12.1–15.9 m |
| 12 m (39.4 ft) | 6.75 m | 14.5–19.1 m |
| 15 m (49.2 ft) | 8.44 m | 18.1–23.9 m |
| 20 m (65.6 ft) | 11.25 m | 24.2–31.8 m |
| 25 m (82.0 ft) | 14.06 m | 30.2–39.8 m |
| 30 m (98.4 ft) | 16.88 m | 36.3–47.7 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) | 213 m² | 19.5 × 11.0 m |
| Quiet street at night (5 lux) | 43 m² | 8.7 × 4.9 m |
| Lit city square (15 lux) | 14 m² | 5.0 × 2.8 m |
| Bright urban area (30 lux) | 7 m² | 3.6 × 2.0 m |
| Indoor, lights dimmed (50 lux) | 4 m² | 2.8 × 1.5 m |
Full specifications
| 3D Modes | Full HD 3D |
|---|---|
| Additional Features | I |
| Aspect Ratio | 16:9 (4K HD) |
| Brightness | 2,400 Lumens (ANSI) 1 |
| Color Processing | 8-bit |
| Color Wheel | 6 segments |
| Connection Panel | 12-Volt Trigger Audio In: Mini Jack Audio Out: Mini Jack HDMI (MHL) HDMI 2.0 (HDCP 2.2) Network: RJ-45 RS232: DB-9pin USB: A x 4 VGA In: Dsub-15pin Wireless Networking |
| Data Modes | MAX 4096x2160 |
| Digital Keystone | No |
| Digital Zoom | Yes |
| Display Type | 0.47" DLP x 1 |
| Dynamic Contrast | 500,000:1 |
| Features | Full HD 3D HDR Amazon Alexa™ Google Assistant™ |
| Image Size | 33.94" - 302.67" |
| Included Lens | 1.3x manual zoom , manual focus |
| Input Lag | 4K/60: 68ms | 1080p/60: 68ms |
| Internal Speakers | 5.0 Watts × 2 |
| Lamp Model | BL-FP240E Buy BL-FP240E Lamp |
| Lens Shift | Vertical +15% |
| Light Source | 240W P-VIP bulb |
| Light Source Life | 4,000 hours / 15,000 hours (Eco) |
| MSRP | $3,199 (USD) |
| Power | 317 Watts 100V - 240V |
| Projector Size | 5.10" x 15.40" x 11.10" (HxWxD) |
| Released | May 2018 |
| Resolution | 3840x2160 w/pixel shifting |
| Status | Discontinued Feb 2020 |
| Throw Distance | 3.9' - 26.6' Calculate Throw Distance |
| Throw Ratio | 1.21:1 - 1.59:1 (D:W) |
| Video Modes | 720p, 1080i, 1080p/60, 1080p/24, 1080p/50, 2160p/24, 2160p/60, 576i, 576p, 480p, 480i |
| Warranty | 1 Year |
| Weight | 11.8 lbs |
Specifications compiled from ProjectorCentral and manufacturer data. Prices change — verify with dealers.
Similar projectors
| Model | Lumens | Resolution | Light source | Throw ratio | Street price |
|---|---|---|---|---|---|
| LG CineBeam HU715QW | 2,500 | 3840×2160 | Laser Phosphor | 0.22:1 | $3,043 |
| Wolf Cinema TXF-850 MK II | 2,500 | 3840×2160 | Laser Phosphor | 1.2–1.6:1 | $8,500 |
| Epson Home Cinema LS11000 | 2,500 | 3840×2160 | Laser Phosphor | 1.35–2.84:1 | $4,500 |
| BenQ W2720i | 2,500 | 3840×2160 | LED | 1.0–1.3:1 | $1,966 |
| Optoma ZK430ST | 2,700 | 3840×2160 | Laser Phosphor | 0.5:1 | $2,532 |
| Barco Bragi | 2,600 | 3840×2160 | LED | 0.3–9.1:1 | |
| BenQ W5850 | 2,600 | 3840×2160 | Laser Phosphor | 1.0–1.6:1 | $6,999 |
| BenQ BR9708 | 2,600 | 3840×2160 | Laser Phosphor | $6,499 |