Best Applications
The Optoma HD28eH is a high-brightness entry-to-mid-range 1080p projector, integrating DLP technology and 4000 ISO lumens output, tailored for versatile scenarios including home entertainment, small private cinemas, and compact commercial venues like mini theaters or retail demo spaces. It features native Full HD resolution, high dynamic contrast, and broad device compatibility, delivering sharp, vivid visuals even in lightly lit environments without relying on full blackout. With user-friendly installation, durable performance, and balanced audio-visual effects, it caters to both families pursuing high-brightness home cinema and small businesses needing cost-effective display solutions.
| Category | Subcategory | Specifications |
|---|---|---|
| Basic Information | Model Name | HD28eH (Global Model) |
| Product Type | High-Brightness 1080p Home & Small Commercial Projector | |
| Projection System | DLP Technology (0.65-inch DMD chip) | |
| Dimensions (W×D×H) | 314×223×108 mm (without lens/feet); 314×238×123 mm (max with feet installed) | |
| Weight | Approx. 3.5 kg (net weight, without lens) | |
| Operating Temperature | 5°C – 40°C; Operating Altitude: 0m – 2500m (High-Altitude Mode for >1500m) | |
| Warranty | 2-Year Whole Machine Warranty; 5-Year DMD Chip Warranty | |
| Display Performance | Native Resolution | 1080p (1920×1080), 2.0736 million pixels |
| Aspect Ratio | 16:9 (compatible with 4:3 via digital scaling) | |
| Color Reproduction | 8-bit color processing, up to 16.77 million colors; 91% Rec.709 color gamut | |
| Color Modes | Cinema, Bright, Game, Vivid, User, Eco | |
| HDR Support | Basic HDR10 compatibility | |
| Brightness & Contrast | White Light Output (ISO) | 4,000 lumens (Standard); 3,200 lumens (Eco) |
| Color Light Output | 4,000 lumens (Rec.709 certified) | |
| Dynamic Contrast | 50,000:1 (Dynamic Black™ Technology) | |
| Optical System | Light Source | High-efficiency mercury lamp (240W) |
| Light Source Life | 4,000hrs (Standard); 6,000hrs (Eco) | |
| Lens Type | Manual zoom/focus lens (center-aligned) | |
| Zoom Ratio | 1.1x (optical) | |
| Throw Ratio | 1.5-1.65:1 | |
| Installation & Projection | Projection Size | 60″-200″ (diagonal); Projection Distance: 1.8m-5.0m |
| Installation Modes | Front/Rear/Ceiling/Floor | |
| Connectivity | Digital Interfaces | HDMI 1.4 (HDCP 1.4)×2; USB Type-A (media playback)×1; USB Type-A (5V/1.5A power)×1 |
| Audio | Built-in 2W monaural speaker; Audio out (3.5mm)×1 | |
| Control | IR remote control; Top-panel control buttons | |
| Power & Operation | Power Supply | AC 100-240V±10%, 50/60Hz |
| Power Consumption | 300W (Standard); 240W (Eco); Standby: ≤1W (Low Power Standby) | |
| Noise Level | 33dB (Standard); 29dB (Eco) | |
| Startup & Shutdown | Startup Time ≤10 seconds; Instant shutdown support |
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