Custom Chrome on Glass Target
Why Choose Chrome on Glass Substrate?
The superior substrate choice for the most demanding calibration applications

Ultra-Low Thermal Expansion
Coefficient of thermal expansion <5×10⁻⁷/°C - 15×better than standard glass. Maintains precision across temperature variations from -40°C to +1100°C.

Exceptional Flatness
Surface flatness down to 5μm for targets up to 130mm. Critical for applications requiring consistent optical path length across the entire surface.

Superior Optical Properties
High transmission (>93%) across visible spectrum with excellent homogeneity. Perfect for backlight and transmission illumination setups

Ultimate Feature Resolution
Minimum feature size down to 0.5μm with razor-sharp edges. Lithographic process delivers unmatched pattern definition and contrast.
Why Substrate Choice Matters for Your Application
Minimum Line/space

Left: Soda lime glass targets resolve features down to 1μm - suitable for general testing applications.

Right: Quartz glass targets achieve 0.5μm resolution - essential for high-precision measurement systems requiring maximum accuracy.
Substrate Properties Comparison
See why quartz glass is the premium choice for ultra-precision applications.
Property | Quartz Glass | Soda Lime Glass | Ceramic |
---|---|---|---|
Thermal Expansion | <5×0⁻⁷/°C | 85×10⁻⁷/°C | 2×10⁻⁶/°C |
Feature Accuracy | ±0.1μm | ±1μm | ±2μm |
Min Feature Size | 0.5μm | 0.7μm | 3μm |
Surface Flatness | ~5μm | ~10μm | 10-80μm |
Max Temperature | 1100°C | ~300°C | 80°C |
Transmission | >93% | >90% | N/A (Opaque) |
Cost | Premium | Standard | Moderate |
Thermal Expansion Coeff
Glass expands when heated and contracts when cooled.

Note: Quartz glass offers approximately 14×it greater dimensional stability under temperature changes
What is Thermal Expansion Coeff in Glass Substrates?
hermal expansion is how much a material grows or shrinks when temperature changes.T Quartz glass has ultra-low thermal expansion ( <5×;10⁻⁷/°C), expanding only 0.55μm per meter per degree Celsius ‐ 15 times less than standard glass. This ensures calibration targets maintain precision across temperature variations.
Property | Quartz Glass | Soda Lime Glass |
---|---|---|
Thermal Expansion | <5×0⁻⁷/°C | 85×10⁻⁷/°C |
Feature Accuracy | ±0.1μm | ±1μm |
Min Feature Size | 0.5μm | 0.7μm |
Surface Flatness | ~5μm | ~10μm |
Max Temperature | 1100°C | ~300°C |
Tips to Prons & Cons
One of the advantages of quartz glass is Low Thermal Expansion Rate (CTE): <5.0*10⁻⁷, it delivers superior thermal stability (0.55μm/°C vs 8.5μm/°C). Essential for precision measurements, optional for general testing applications.
Unless you need exceptional thermal stability, soda lime glass delivers excellent performance at a fraction of the cost of quartz glass.
Superior Light Transmission
Industries that demand the ultimate in calibration precision

Soda Lime Glass (Float Silica):
Transmission Rate >90% at 550nm

Quartz Glass (Fused Silica):
Transmission Rate >95% at 550nm
Surface Flatness Comparison
Glass expands when heated and contracts when cooled.

What is Surface Flatness?
Surface flatness indicates how level a target’s surface is across its entire area. Quartz glass maintains flatness within 5μm for targets up to 130mm, ensuring consistent optical path length and accurate measurements throughout the calibration area.
Note: Quartz glass consistently delivers 5-10× better surface flatness across all size ranges, making it ideal for precision optical applications.
Glass Type | Soda Lime Glass (Standard Float Glass) | Quartx Glass (Fused Silica) Small Samples |
---|---|---|
Small Samples Surface Deviation | <5μm (for sizes under 100mm) | <lμm (for sizes under 50mm) |
Medium Samples Surface Deviation | <20μm (for sizes under 200mm) | <2μm (for sizes under 100mm) |
Large Samples Surface Deviation | 0<50μm (for sizes over 200mm) | <5μm(for sizes over 100mm) |
Ultra-Smooth Surface
Surface Roughness: Less than 25 nanometers

Note: Diagram shows microscopic surface profile with maximum height variations under 25nm
Our precision-polished quartz glass features an exceptionally smooth surface with microscopic variations of less than 0.025μm (25nm) – approximately 2,000 times thinner than a human hair.
This near-perfect surface quality ensures:
- Superior optical performance
- Minimal light scatter
- Optimal coating adhesion
- Exceptional image clarity
Diagram shows microscopic surface profile with maximum height variations under 25nm
Chrome Coating Options on Glass Target
Choose the perfect coating for your specific application requirements

Standard Brown Chrome
- Best for: General-purpose applications
- Reflectivity: <25% for good contrast
- Cost-effective choice when extreme precision isn't critical

Low-Reflective Blue Chrome
- Best for: High-contrast applications
- Reflectivity: <5% for maximum contrast
- Cost-effective choice when extreme precision isn't critical

High-Reflective Silver Chrome
- Best for: Reflective measurement systems
- Reflectivity: <65% for bright reference patterns
- Perfect for applications requiring reflected light
Low Reflectivity Quartz Glass
Key Insight: Blue Chrome exhibits the lowest reflectivity in the 640-740 nm wavelength range, dropping to nearly 0% reflectivity

Note: Graph shows comparative reflectivity (%) of Bright Chrome, Brown Chrome, and Blue Chrome across 440-1040 nm wavelength range.
Choose Your Ideal Chrome Coating
Based on the demonstrated reflectivity performance, select the coating that matches your application's contrast and measurement requirements. Each option delivers consistent, reliable results for different optical testing scenarios.
Contact us to specify your preferred chrome coating option, or request samples to test with your specific setup.
Get Custom QuoteManufacturing Process That Ensures Quality
Substrate Preparation
Premium quartz glass blanks are inspected for optical quality and dimensional accuracy. Only substrates meeting our strict flatness and transmission standards proceed to coating.
Precision Chrome Deposition
Advanced sputtering systems deposit ultra-uniform chrome layers. Real-time monitoring ensures consistent thickness and optical properties across the entire surface.
Lithographic Patterning
State-of-the-art photolithography creates your custom patterns with sub-micrometer precision. Multiple alignment checks guarantee every feature lands exactly where it should.
Quality Verification
Every target undergoes comprehensive dimensional and optical testing. We provide detailed measurement reports showing actual vs. specified dimensions.
Low Reflectivity Quartz Glass
Key Insight: Blue Chrome exhibits the lowest reflectivity in the 640-740 nm wavelength range, dropping to nearly 0% reflectivity
1.6mm
Ultra-thin for compact designs
2.3mm
Standard precision applications
3.0mm
Enhanced durability
10mm
Maximum stability

Size Dimension Tolerance
Specification | Value | Why It Matters |
---|---|---|
Size Length Width (mm) | 1x1mm to 1200 x 850mm | For high magnification optical systems, machine vision applications, wide-field imaging systems. |
Thickness Options | 1.5mm / 2.3mm / 3.0mm / 10.0mm | Choose based on mounting requirements |
Surface Flatness(μm) | 5um to 30um (size dependent) | Dimension <130mm: ~5um; Dimension 130-220mm: ~10um; Dimension 130-220mm: ~10um; Dimension 220-450mm: ~20um; Dimension 450-550mm: ~30um; Ensures consistent optical performance |
Edge Finish | Beveled ±1° | Prevents edge damage and light scattering |
Surface Roughness | <0.025um | Ultra-smooth for optimal optical quality |
Tolerance | Specification | Application Impact |
Dimensional Accuracy | ±0.05mm to ±0.1mm | Precise positioning in optical setups |
Thickness Tolerance | ±0.1mm | Consistent optical path length |
Feature Accuracy | ±0.1μm to ±1um | Critical for measurement applications |
Custom Calibration Targets Dimensional Range
Available in multiple thicknesses to suit your application requirements.
Custom sizes and shapes available upon request.
1.6mm
Ultra-thin for compact designs
2.3mm
Standard precision applications

Precision Laser Cutting Custom Shapes Made Easy
From simple to complex designs, our laser cutting technology delivers exactly what you need.
Corner | Chamfer | Hole | Round | Oval
