MicroJet Laser Technology Empowers the Development of Silicon Carbide AR Glasses Industry

I. Development Background

As augmented reality (AR) technology gradually integrates into daily life, the AR glasses market is experiencing rapid growth. Innovations in materials and processing technologies have become key drivers of this progress. The integration of MicroJet laser technology with silicon carbide (SiC) materials is revolutionizing the AR glasses industry.

II. Synergistic Advantages Driving Industry Advancement

1. The Value of SiC in AR Applications

Silicon carbide (SiC) exhibits immense potential in AR lenses due to its unique optical and physical properties. With a high refractive index (2.65–2.73), lightweight nature, exceptional strength, and superior thermal conductivity, SiC enables wider field-of-view angles (up to 80°) compared to traditional glass lenses, delivering an immersive visual experience. Additionally, it facilitates thinner lens designs while enhancing image clarity. However, SiC's extreme hardness and brittleness pose challenges for conventional mechanical processing, often leading to material damage and compromised lens quality.

2. Core Advantages of MicroJet Laser Technology & Practical Results

MicroJet Laser (Laser MicroJet) technology employs a high-pressure water jet to guide laser beams, combining water cooling and flushing to achieve "cold processing" of SiC. Proven benefits include:

• Precision: Kerf widths as fine as 30–80 μm, with surface roughness as low as Ra ≤1 μm, meeting AR lenses' stringent nanoscale requirements.
• Low Thermal Impact: Water rapidly dissipates heat, minimizing thermal stress and microcracks, ensuring long-term reliability.
• Versatility: Capable of processing right angles, complex shapes, and ultra-thin components, accommodating diverse AR waveguide designs.

Case Study:

A 4-inch high-purity SiC crystal (21 mm thick) was processed using a five-axis MicroJet laser system, successfully cutting a 0.65 mm lens slice (Figure 1). Post-processing evaluation confirmed:

Figure 1 Processing the outline of AR glasses

1. Flawless edges: No thermal damage, chipping, or cracks (Figure 2).
2. Surface roughness: Ra = 0.662 μm (Figure 3).
3. Optical clarity: Post-polishing, the lens achieved full transparency, meeting AR specifications.

Figure 2 Silicon carbide crystal AR lens cutting

This technology has significantly improved light transmission and thinness while optimizing production efficiency through automation, bolstering industry competitiveness.

Figure 3 Test of cutting surface roughness

Figure 4 Polished silicon carbide wafers (refer to the effect picture)

III. Market Demand & Industrial Chain Collaboration

1. Explosive Growth of the AR Glasses Market

Market research predicts 2025 as a pivotal year for AR, with China’s hardware shipments expected to surge to 20.88 million units (CAGR: 103.4%). As a core component for immersive AR experiences, SiC lens demand will skyrocket. MicroJet laser technology enhances production efficiency, reducing costs compared to traditional wire saws, paving the way for mass adoption in consumer AR devices.

2. Domestic Industrial Chain Breakthroughs

Chinese firms have made strides in MicroJet laser equipment and SiC processing:

• Customized SiC wafers (e.g., TankeBlue) meet AR lens specifications.
• Process databases for hard/brittle materials (including SiC) support scalable production.
• Integration with CAD/CAM and AI-driven automation accelerates R&D cycles.

ZMSH's SiC 4H-SEMI Type

IV. Future Trends & Challenges

1. Technological Advancements & Cross-Industry Applications

• Higher-power lasers: Improved efficiency with minimized heat-affected zones.
• AI-driven optimization: Real-time parameter adjustments for yield enhancement.
• Extended applications: E.g., diamond heat spreaders for AR thermal management.

2. Industry Challenges & Strategies

• Cost reduction: Scale production and optimize supply chains.
• Standardization: Unified processing benchmarks for compatibility.
• Sustainability: Closed-loop ultra-pure water systems for eco-friendly manufacturing.

ZMSH's SiC 4H-SEMI Type

V. Outlook

MicroJet laser technology, combined with SiC, will propel AR glasses toward thinner, sharper, and more durable designs. Beyond AR, this synergy may redefine precision processing in semiconductors and medical devices. With domestic technological breakthroughs and growing AR demand, China is poised to lead this emerging sector, invigorating the global AR ecosystem.

In conclusion, the convergence of MicroJet lasers and SiC materials holds transformative potential for AR glasses. Collaborative efforts will be key to overcoming challenges and unlocking market opportunities.

ZMSH provide comprehensive silicon carbide (SiC) solutions, offering high-quality substrates in sizes ranging from 2-inch to 12-inch, with customizable thickness and polytypes (4H/6H/3C-SiC). Our end-to-end services—from crystal growth to precision processing—ensure reliable supply for power electronics, RF, and AR applications. Partner with us for tailored SiC solutions and technical support.

ZMSH's SiC 4H-SEMI Type