I. Core Principle Comparison

1. LED Dome Cinema

• Display Principle: Adopts small-pitch LED curved modules spliced into a complete sphere/hemisphere. Each LED lamp is an independent pixel with active self-illumination, requiring no external light source. Special curved correction algorithms eliminate spherical distortion and realize 360° panoramic seamless display.
• Core Components: Curved LED display modules, curved splicing control system, UHD playback server, sound-transparent/non-transparent structure, surround sound system, dynamic seats (optional).
• Imaging Logic: Electrical signals directly drive LED beads to emit light; screen brightness, color and contrast are determined by LED hardware.

2. Projection Dome Cinema

• Display Principle: Uses multiple high-lumen projectors (laser/xenon) with fisheye short-focus lenses to project images onto a special spherical screen. Edge blending + geometric correction combines multi-projector images into a complete spherical image with passive reflective imaging.
• Core Components: Multi-channel projectors, fisheye lenses, metal/nano sound-transparent domes, fusion servers, audio systems, dynamic seats (optional).
• Imaging Logic: Light source projection → screen reflection → human eye reception. Visual effects are affected by projection brightness, screen material, ambient light and fusion accuracy.

II. Core Characteristics Comparison

1. Image Quality

2. Installation & Structure

• LED Dome: Modular curved design, flexible customization (5–50m diameter). No complicated civil work; fast installation in ~30 days. Supports sound-transparent structure with speakers behind the screen.
• Projection Dome: Limited by projection distance and lens, size usually ≤30m. Requires projection room/hoisting space; complicated optical and civil design. Screen wrinkles and uneven reflection are common.

3. Environmental Adaptability

• LED Dome: All-scenario compatible — indoor, semi-outdoor, open-air. Not affected by sunlight or lighting. Can be made transparent for both daylight visibility and night display.
• Projection Dome: Darkroom only. Even mild ambient light severely reduces image quality. Cannot be used outdoors.

4. Maintenance & Lifespan

• LED Dome: Lifespan >100,000 hours, no consumables. Single-module failure repairable without shutdown. Low maintenance cost.
• Projection Dome: Laser source ~20,000 hours; xenon lamp only 500–2000 hours. High lamp replacement cost. Requires frequent fusion calibration and high maintenance.

III. Application Scenario Comparison

1. LED Dome Cinema (High-end, Landmark, All-weather)

• Cultural & Tourism Landmarks: Theme parks, scenic spots (30–66m super domes), city landmarks with all-weather operation.
• Commercial Complexes: Shopping malls, science and technology museums, usable day and night without blackout.
• Special Performances: Holographic shows, immersive theaters, flying theaters. High brightness supports stage lighting environments.
• Outdoor & Semi-outdoor: Squares, open-air domes, visible even in daylight.
• High-end Science Popularization: Planetariums, aerospace museums with high resolution and color accuracy.

2. Projection Dome Cinema (Traditional, Darkroom, Budget-friendly)

• Traditional Museums & Planetariums: Popular science viewing in darkrooms with controllable cost.
• Small Flying Themes: Small-scale projects in theme parks (10–15m diameter).
• Temporary / Mobile Domes: Quick events, exhibitions with portable projectors and inflatable screens.
• Indoor Cinemas: Pure darkroom operation relying on blackout systems.

IV. Investment & Cost Comparison

1. Initial Construction Cost

• LED Dome: ¥10,000–16,000/㎡. A 15m-diameter dome costs ~¥7–11 million; 30m ~¥28–45 million.
• Projection Dome: 15m-diameter ~¥2–4 million; 30m ~¥5–8 million, about 1/3–1/2 of LED dome.

2. Operation & Maintenance Cost

• LED Dome: Annual maintenance ≤1% of total investment. Almost no consumables. 10-year maintenance ≈10% of initial cost.
• Projection Dome: Annual maintenance ≥5%. Lamp replacement costs ¥200,000–500,000 per year. 10-year maintenance ≈50%–80% of initial cost.

3. Return on Investment Cycle

• LED Dome: 3–5 years. All-weather operation, higher ticket prices and landmark effect bring strong revenue.
• Projection Dome: 5–8 years. Limited to darkroom, lower ticket price and longer payback period.

V. Summary of Advantages & Disadvantages

LED Dome Cinema

• Superior image quality: high brightness, contrast, resolution and color gamut.
• All-weather use: no ambient light limitation, indoor/outdoor compatible.
• Flexible structure: unlimited size, fast modular installation.
• Low maintenance: long lifespan, no consumables, low long-term cost.
• High return: landmark effect, premium pricing, fast ROI.

• High initial investment, 2–3 times that of projection domes.
• Very small pitch required for ultra-close viewing, increasing cost.
• Large-size domes have higher transportation and installation difficulty.

Projection Dome Cinema

• Low upfront cost, suitable for limited budgets.
• Mature technology, low implementation risk.
• Portable for temporary and mobile projects.
• Soft light for long-time viewing in dark environments.

• Poor image quality: low brightness, weak contrast, dark detail loss.
• Must be darkroom-only, poor scene adaptability.
• High long-term maintenance and lamp replacement cost.
• Size limitation, hard to build large landmarks.
• Visible fusion bands and distortion affect immersion.

VI. Selection Suggestions

• Choose LED Dome: For top image quality, all-weather operation, landmark effect, low long-term cost, budget ≥¥5 million, for tourism, commerce, performances and outdoor projects.
• Choose Projection Dome: For limited budget ≤¥3 million, darkroom-only use, traditional science museums, small flying theaters or temporary events.