Oklab offers three precision chrome coating options to match your specific application requirements. Each coating type is engineered to optimize performance in different lighting conditions and imaging scenarios.
Why Chrome Coating Matters:
- Flatness: Reduces surface irregularities that affect camera calibration accuracy
- Flatness Benefit: Enhances calibration precision and measurement stability
- Optical Control: Precisely tuned reflectivity for optimal feature detection
Chrome Coating Comparison Table
| Coating Type | Reflectivity Range | Primary Applications | Key Benefits |
|---|---|---|---|
|
Blue Chrome (Low Reflective) |
8~20% |
• Semiconductor wafer inspection • Flat panel display manufacturing • High-uniformity imaging systems • Color marker identification • Fixed pattern traceability |
✓ Minimizes glare and hotspots ✓ Uniform illumination response ✓ Ideal for high-precision AOI ✓ Excellent contrast in controlled lighting |
|
Brown Chrome (Standard Reflective) |
10~30% |
• Outdoor construction site monitoring • Solar panel production lines • Environments requiring special features • Strong ambient light conditions |
✓ Balanced reflectivity ✓ Robust in variable lighting ✓ General-purpose applications ✓ Cost-effective solution |
|
Bright Chrome (High Reflective) |
55~70% |
• Machine vision research & AI validation • High-speed sorting & robotics • Automated production line inspection • Fast positioning applications • Weak lighting environments (e.g., dark rooms) |
✓ Maximum light return ✓ Fast detection speeds ✓ Optimal for rapid positioning ✓ Effective in low-light conditions ✓ Enhanced edge detection |
Application-Specific Recommendations
Choose Blue Chrome (Low Reflective) if you need:
- High imaging uniformity for quality inspection
- Minimal reflection in semiconductor/electronics manufacturing
- Precise color or pattern recognition
- Controlled, diffuse lighting environments
Choose Brown Chrome (Standard Reflective) if you need:
- Outdoor or variable lighting robustness
- General-purpose calibration targets
- Cost-effective solutions for standard applications
- Moderate ambient light conditions
Choose Bright Chrome (High Reflective) if you need:
- Maximum detection speed for high-throughput systems
- Fast robotic positioning and tracking
- Performance in weak or dark lighting
- High contrast for edge detection algorithms
- Research applications requiring strict reflection control
Technical Specifications
All Chrome Coatings Feature:
- Laser-written patterns with ±1μm position accuracy
- Superior flatness for calibration stability
- Optical density (OD) >4.5 for defined pattern areas
- Coating thickness: 100-120nm (±0.20nm tolerance)
- Thermal stability: <80×10⁻⁷/K expansion coefficient
- Compatible with visible spectrum (550nm, 650nm, 750nm wavelengths)
Surface Quality:
- Flatness: <0.55μm (dimensions <50mm)
- Surface roughness: <0.025μm
- White smooth backside coating for enhanced contrast
Why Coating Selection Matters
The chrome coating directly impacts:
- Feature Detection Reliability - Optimized reflectivity ensures consistent pattern recognition
- Calibration Accuracy - Flat, uniform coatings minimize systematic errors
- System Performance - Matched reflectivity reduces processing time and improves throughput
- Environmental Adaptability - Right coating prevents calibration failures in your specific lighting
Customization Available
Can't find the perfect match? We offer:
- Custom reflectivity values (contact for specifications)
- Positive/negative pattern options
- Custom sizes from 4×4mm to 800×960mm
- Mixed coating configurations for multi-zone testing
Ready to optimize your calibration system?
Contact us to service@oklab.com