I. Challenge & Vision: The Ambition of "Time Travel" Within Limited Exhibition Space
As a key window into Xiang-Chu culture, Changde Museum urgently needed to bring cultural relics to life through digital means. The client set core requirements: within the limited exhibition space, create a dynamic display screen that combines high definition, seamless fusion, and immersive experience—used to narrate Changde’s thousand-year history and the stories behind its relics, allowing visitors to viscerally feel the charm of "Shande Culture" (benevolence and virtue).
Traditional long-throw projection faced dual dilemmas: first, the narrow spacing between museum display walls required greater depth for long-throw projection, conflicting with display cases and visitor flow; second, multi-projector stitching often caused image misalignment and color deviation, disrupting the coherence of historical narrative. The core challenge was how to "stage a grand show in a small space," using technology to restore both the weight and vitality of history.
II. Solution: Dual Short-Throw Synergy, Redefining Exhibition Visual Boundaries
Addressing Changde Museum’s spatial constraints and cultural display needs, the project team customized a "2 × Hualu DU700 Laser Engineering Projectors + 2 × Zorsika WB067 Short-Throw Lenses" solution. Centered on "ultra-short throw breaking spatial limits + dual-machine fusion creating seamless giant screens," it transformed limited exhibition areas into immersive historical theaters.
Core Advantages:
Ultra-short throw saves space: The Zorsika WB067 lens features an ultra-short throw ratio of 0.74–0.77:1 (vs. the Hualu DU700’s original lens at 1.22–1.52:1), drastically reducing projection distance. Even in front of narrow display walls, it projects 100-inch+ images, freeing up more space for exhibits.
Seamless dual-machine fusion: Leveraging the Hualu DU700’s built-in edge blending technology, two projectors deliver geometrically corrected, color-calibrated images that merge seamlessly—eliminating stitching gaps for a "borderless" visual experience.
Cultural adaptability: The Hualu DU700’s HDR dynamic decoding and 4K signal support accurately restore relic textures and ancient book colors; 3D functionality dynamically demonstrates historical scenes (e.g., ancient city construction, folk activities), enhancing narrative tension.
III. Core Equipment Analysis: Hard Tech Empowering Cultural Expression
1. Hualu DU700 Laser Engineering Projector: A Central Enterprise-Grade Visual Foundation
As a flagship product under Hualu Information Industry Co., Ltd. (a core subsidiary of China Hualu Group, focused on "terminal and smart manufacturing" as a central enterprise "little giant"), the Hualu DU700 is defined by "professionalism, reliability, and longevity"—providing a stable, efficient display base for museums:
Display technology: Uses a 0.67″ DLP chip with microsecond-level refresh speed for sharp, precise images. High light efficiency delivers a 5,000,000:1 contrast ratio, ensuring clear details in dark scenes (e.g., bronze patina, ink traces on ancient books) and bright highlights (e.g., firelight in ancient battlefield scenes).
Flexible installation: Full electric lens with ±100% vertical and ±30% horizontal shift (based on half the image width/height), plus four-corner correction and image shift functions—easily adapting to uneven walls or irregular structures in exhibition spaces.
Long-term stability: Laser phosphor light source lasts 20,000 hours (25,000 hours in eco mode); fully sealed optical engine (dust-proof, no filter) suits high-traffic museum environments. Supports 360° free installation + IP5X protection for ceiling, side, or angled deployment.
Smart experience: Integrates HarmonyOS Connect Star Flash technology for short-range multi-device connectivity and OpenHarmony ecosystem support—enabling easy content updates and remote management. Built-in 10W speakers (dual speakers in some models) sync with historical audio commentary for an integrated "audio-visual" immersion.
Hualu Info Industry Endorsement: As a central enterprise leader in "specialized, refined, unique, and new" tech, Hualu Info Industry has deep expertise in digital audio-video and laser display. It provides R&D, manufacturing, and marketing services globally, with products widely used in cultural tourism, education, and government scenarios.
2. Zorsika WB067 Short-Throw Lens: Precision Optics "Translating" Historical Details
Founded in 2015, Zorsika (ZORSIKA) specializes in professional video accessories (projection lenses, lamps, filters). Its WB067 lens is custom-designed for 0.67″ panels (like the Hualu DU700’s 0.67″ DMD chip)—acting as the "optical eye" of the short-throw fusion solution:
Parameter compatibility: Product code D67-066, throw ratio 0.74–0.77:1 (short throw), supports 0.67″ WUXGA/4K panels. 4K resolution ensures relic details (e.g., pottery patterns, calligraphy brushstrokes) are rendered with lifelike clarity. Vertical lens shift up to 70% expands installation flexibility.
Performance advantages: Light efficiency reaches 95.37% (32% higher than standard lenses), with only 6cm of extension from the projector—minimizing equipment footprint. MTF optimized for 66lp/mm ensures excellent edge distortion control, enabling seamless dual-machine fusion.
Compatibility verified: Explicitly compatible with Hualu HL-DU700C (the DU700 series, Link 2). Complements the Hualu DU700’s 1.22–1.52:1 original lens, filling short-throw scenario gaps—validated in multiple museum and exhibition projects.
IV. Project Implementation: A "Two-Way Empowerment" of History and Technology
Post-deployment, the Changde Museum exhibition exceeded expectations:
Visual impact: A 150-inch seamless giant screen dynamically narrates historical scenes like the "Chengtoushan Ruins" and "Shan Juan’s Reclusion." 3D relic models (e.g., Warring States bronze swords, Eastern Han pottery towers) feature vivid colors under HDR decoding—allowing visitors to "touch" historical textures.
Space optimization: Projection distance shortened to under 1.5 meters, freeing up visitor pathways and avoiding obstructions common with long-throw setups.
Long-term operation: The Hualu DU700’s 20,000-hour light source and Zorsika lens durability ensure no core component replacement for 5 years—reducing maintenance costs. Hualu Info Industry’s national service network provides timely technical support, letting the museum focus on content creation.
Today, this exhibit has become a "must-see" at Changde Museum. Visitors note, "It feels like traveling back in time—I finally understand the stories behind these relics." The project received special recognition from the local cultural tourism bureau for "technology empowering cultural inheritance."
V. Conclusion: Bridging Past and Present Through Vision
The Changde Museum project exemplifies "tech + culture" synergy: Hualu DU700’s central enterprise-grade quality and Zorsika WB067’s precision optics solved the conflict between exhibition space and visual impact—transforming static relics into dynamic, immersive experiences. Moving forward, such collaborations will continue to accelerate cultural preservation, keeping millennia-old heritage alive in the digital age.
About Zorsika: Since 2015, Zorsika has specialized in the video sector, empowering clients with "professional products + one-stop solutions." Its product range covers 4K wide-angle, short-throw, and fisheye lenses (throw ratios 0.35–10.0).
Project Name: Changde Museum Historical Context Immersive Exhibit
Core Equipment: 2 × Hualu DU700 Laser Engineering Projectors + 2 × Zorsika WB067 Short-Throw Lenses
Application Results: 100-inch+ seamless giant screen, space-saving short throw, 4K HDR image quality, 5-year stable operation