Key Takeaways
- Visitech’s LRS 8KA Laser 405 delivers >30 W of optical power, more than 2× the output of the legacy LRS McX 4K (≈13 W).
- The engine is built around a native 4K DMD (≈5 M pixels) and a proprietary optical actuator that can address >35 million pixel positions per exposure.
- Higher power enables a single engine to cover print beds up to ≈500 mm × 500 mm, eliminating the need for multi‑engine stitching.
- Integrated LUXBEAM Additive Manufacturing Application (LAMA) provides virtual‑projector simulation, reducing development risk and shortening time‑to‑market.
- The LRS 8KA is positioned for industrial‑grade DLP/LCD resin printing, hybrid lithography, and large‑area additive manufacturing (AM) platforms.
Introduction
Norwegian optics specialist Visitech has launched the LRS 8KA Laser 405, a next‑generation digital light processing (DLP) light engine aimed at expanding the printable area of resin‑based 3D printers. By marrying a native 4K digital micromirror device (DMD) with a high‑power laser module, the new engine promises to double the optical output of Visitech’s previous flagship, the LRS McX 4K, while retaining the pixel density required for fine feature resolution.
How the LRS 8KA Works
Native 4K DMD Core
- Resolution: 4,096 × 2,160 micromirrors (≈8.8 M total)
- Pixel pitch: 7.6 µm, enabling ≤30 µm XY resolution at typical exposure times.
High‑Power Laser Module
- Laser type: 405 nm diode array (multiple diodes combined)
- Optical output: >30 W in‑image (≈13 W for LRS McX 4K)
- Power density: ~0.6 W mm⁻² across the projected area, supporting faster cure kinetics for high‑performance resins.
Optical Actuator & Pixel Addressing
Visitech’s proprietary actuator synchronizes the DMD with the laser beam, allowing >35 million pixel positions per exposure. This translates to smoother grayscale gradients and reduced stair‑step artifacts, especially on large‑area prints.
Benefits of Higher Power
| Feature | LRS 8KA Laser 405 | LRS McX 4K (LED) |
|---|---|---|
| Optical Power (in‑image) | >30 W | ≈13 W |
| Power Increase | +130 % | — |
| Printable Area (single engine) | Up to 500 mm × 500 mm (depending on optics) | Typically ≤250 mm × 250 mm |
| Exposure Time (typical resin) | 2–4 s per layer | 5–8 s per layer |
| Energy Efficiency (W per mm²) | 0.12 W mm⁻² | 0.08 W mm⁻² (lower power, longer cure) |
| Supported Resins | High‑viscosity, ceramic‑filled, engineering grades | Standard photopolymers |
The table highlights that the LRS 8KA can halve the number of exposure cycles needed for a given part thickness, directly reducing build time.
Integrated Software: LUXBEAM Additive Manufacturing Application (LAMA)
Visitech bundles the LAMA control suite with every LRS 8KA purchase. Key capabilities include:
- Virtual Projector Simulation – Users can import STL files and preview how the light engine will rasterize each layer, spotting potential over‑exposure or under‑cure zones before printing.
- Projector Emulation – LAMA mimics the behavior of conventional DLP projectors, allowing legacy workflows to migrate seamlessly to the LRS 8KA hardware.
- Automated Calibration – Built‑in routines align the DMD, laser module, and optics to within ±2 µm, ensuring repeatable dimensional accuracy across large builds.
These tools lower development risk for OEMs integrating the engine into custom machines, cutting prototype cycles from months to weeks.
Market Implications
The additive‑manufacturing sector has seen a surge in demand for large‑format resin printers—from aerospace brackets to dental prosthetics—where build volume and surface finish are critical. By delivering >30 W of optical power in a single 4K engine, Visitech eliminates the need for multi‑engine tiling architectures that add mechanical complexity and calibration overhead. This positions the LRS 8KA as a compelling choice for:
- Industrial OEMs building 1 m‑scale lithography systems.
- Hybrid AM platforms that combine DLP curing with powder‑bed or fused deposition processes.
- Research labs requiring high‑throughput, high‑resolution polymerization for functional materials.
Bottom Line
Visitech’s LRS 8KA Laser 405 represents a decisive step forward for DLP‑based additive manufacturing. By more than doubling optical power while preserving 4K resolution, the engine unlocks larger printable footprints, faster cure cycles, and higher‑viscosity resin compatibility—all within a single, software‑enabled package. For manufacturers seeking to scale up resin printing without the cost and complexity of multi‑engine arrays, the LRS 8KA offers a clear, future‑proof solution.
