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Custom Chrome on Glass Target

Quality • Customization • Direct Factory Pricing

±0.1μm
Feature Accuracy
0.5μm
Min Feature Size
1200×850mm
Max Size
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Precision Standards

When sub-micrometer accuracy is non-negotiable
±0.1μm
Feature Position Accuracy
0.5μm
Min. Line Space
5×10⁻⁷/°C
Thermal Expansion
~5μm
Surface Flatness
Positive: Dark pattern on transparent background
Negative: Transparent pattern on dark background

Technical Specifications

Detailed specifications for precision engineering applications
Accuracy Standards
Feature Size Accuracy：
±0.1μm / ±1μm
Position Accuracy：
(≤300mm)±1μm
Position Accuracy：
(>300mm)±3-5μm
Line Straightness：
±1μm
Circle Roundness：
±1μm
Physical Properties
Size Range：
1×1mm to 1200×850mm
Thickness Options：
1.5 / 2.3 / 3.0 / 10.0mm
Surface Roughness：
<0.025μm
Edge TypeBeveled：
±1°
Operating Temperature：
-40°C to +1100°C
Coefficient of Thermal conductivity（°C）：
1.47/m°C
Manufacturing Temperature（°C）：
23°C
Substrate Properties
Material：
Fused Silica (Quartz)
Transmission：
93% (420-700nm)
Thermal Expansion:
<5×10⁻⁷/°C
Young's Modulus:
72,000 MPa
Mohs Hardness:
7
Tensile Strength:
48Mpa
Compressive Strength:
1100Mpa
Bending Strength / Flexural Strength:
67Mpa
Modulus of rigidity:
31000Mpa
Dielectric Constant:
3.7-3.9MHz
Poisson's Ratio:
0.14-0.17
Optional Features
AR Coating：
Single/Double Side
Custom Backlights:
Available
Protective Pellicle:
Optional
Mounting Frames:
Custom Design
Certification 3rd - Party:
Available

Why Choose Chrome on Glass Substrate?

The superior substrate choice for the most demanding calibration applications

Ultimate Feature Resolution

Minimum feature size down to 0.5μm with razor-sharp edges. Lithographic process delivers unmatched pattern definition and contrast.

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.

Superior Optical Properties

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

Exceptional Flatness

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

Minimum Line/space

Why Substrate Choice Matters for Your Application

Industries that demand the ultimate in calibration precision
 Note💡 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
Thermal Expansion
Feature Accuracy
Min Feature Size
Surface Flatness
Max Temperature
Transmission
Cost
Quartz Glass
<5×10⁻⁷/°C
±0.1μm
0.5μm
~5μm
1100°C
>93%
Premium
Soda Lime Glass
85×10⁻⁷/°C
±1μm
0.7μm
~10μm
~300°C
>90%
Standard
Ceramic
7.2×10⁻⁶/°C
±2μm
3μm
10-80μm
80°C
N/A (Opaque)
Moderate

Thermal Expansion Coeff

Glass expands when heated and contracts when cooled.
Note: Quartz glass offers approximately 14× greater dimensional stability under temperature changes

What is Thermal Expansion Coeff in Glass Substrates?？

Thermal expansion is how much a material grows or shrinks when temperature changes. 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.

Parameters

Soda Lime Glass (Float Glass)

Quartz Glass (Fused Silica)

Thermal Expansion Coeff  (15-200 ℃)

<8.0×10 -7/K

<5.0×10-7 /K

Expansion Ratio (20-200 ℃)

0.00085％

0.00006％

Real-World Expansion Impact of 1 Meter

1m glass changes by 8.5μm per 1°C

1m glass changes by 0.6μm per 1°C

Temperature Stability

Standard stability

14x more stable

Best Applications

General-purpose testing

Precision measurement systems 

💡 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.

Note: Quartz glass consistently delivers 5-10× better surface flatness across all size ranges, making it ideal for precision optical applications.

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.

Glass Type

Soda Lime Glass (Standard Float Glass)

Quartz Glass (Fused Silica)

Small Samples
Surface Deviation

<5μm (for sizes under 100mm)

<1μm (for sizes under 50mm)

Medium Samples
Surface Deviation

<20μm (for sizes under 200mm)

<2μm (for sizes under 100mm)

Large Samples
Surface Deviation

<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

Types of Chrome Coating on Glass Test Target

Choose the perfect coating for your specific application requirements
Standard Brown Chrome
Reflectivity：
<25% @550nm
Optical Density:
>3.0
Best For:
General inspection applications
Low-Reflective Blue Chrome
Reflectivity：
<5% @680nm
Optical Density:
>5.0
Best For:
High-contrast applications
High-Reflective Silver Chrome
Reflectivity：
<65% @436nm
Optical Density:
>3.0
Best For:
Reflective measurements

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.

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
  • Ideal when you need to eliminate stray light

High-Reflective Silver Chrome

  • Best for: Reflective measurement systems
  • Reflectivity: <65% for bright reference patterns
  • For applications requiring reflected light

Standard Type - Dark Brown Chrome

Industry Standard for General Applications
Front surface:
Dark brown on air side
Back surface: :
Silver on glass side
Front Surface Reflectivity:
<25% @550nm
Optical Density (OD):
>3.0

Front Surface/Air Side Brown (Front View)

Glass Side Silver (Back View)

Custom Type - Blue Chrome - Silver

Enhanced Contrast Performance
Front surface:
Blue on air side
Back surface: :
Silver on glass side
Front Surface Reflectivity:
<5% @680nm
Optical Density (OD):
>5.0

Front Surface/Air Side Blue (Front View)

Glass Side Silver (Back View)

Custom Type - Blue Chrome - Blue

Maximum Contrast Configuration
Front surface:
Blue on air side
Back surface: :
Blue on glass side
Front Surface Reflectivity:
<5% @680nm
Optical Density (OD):
>5.0

Front Surface/Air Side Blue (Front View)

Glass Side Silver (Back View)

Custom - High-Reflective Chrome (Silver)

Reference Standard Configuration
Front surface:
Silver on air side
Back surface: :
Silver on glass side
Front Surface Reflectivity:
<65% @436nm
Optical Density (OD):
>3.0

Front Surface/Air Side Silver (Front View)

Glass Side Silver (Back View)

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 Quote

Custom Test Targets Precision Thickness Options

Available in multiple thicknesses to suit your application requirements
1.6mm

Ultra-thin for compact designs

2.3mm

Standard precision applications

3.0mm

Enhanced durability

10mm

Maximum stability

All options feature precision-ground edges and uniform thickness across the entire surface.

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)

5μm to 30μm (size dependent)

Dimension <130mm: ~5um;
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

<0.025μm

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 ±1μm

Critical for measurement applications

Density Measurement

Custom Calibration Targets Dimensional Range

Available in multiple thicknesses to suit your application requirements.
Custom sizes and shapes available upon request.
1200x850mm
Maximum dimensions
1×1mm
Minimum dimensions

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

Chrome Test Target Manufacturing

Step-by-Step Production Process

Manufacturing Workflow:

Substrate Material

Step 1: High-quality glass or quartz substrate preparation with optical-grade surface finish and flatness specifications.

Laser Writing

Step 2: Precision laser systems create the photoresist pattern with sub-micrometer accuracy, defining the exact resolution groups and elements.

Developing

Step 3: Chemical developing process reveals the exposed photoresist areas, creating the initial pattern structure ready for etching.

Etching

Step 4: Selective etching removes material to create the final high-contrast resolution patterns with sharp, well-defined edges.

Pellicle Mounting (Optional)

Step 5: Protective pellicle film installation provides contamination protection while maintaining optical access to the target patterns.

Inspection & Repair

Step 6: Comprehensive quality control using advanced optical inspection systems to verify feature accuracy and pattern integrity.

Stripping & Cleaning

Step 7: Final photoresist removal and precision cleaning ensures optimal optical performance and long-term stability.

Quality Assurance

Step 8: Final verification testing confirms all specifications meet USAF 1951 standards with documented traceability and certification.

What Makes Our Test Targets Excellent

Our calibration targets undergo rigorous testing by accredited third-party laboratories to ensure they meet international standards and exceed your performance expectations.

Automatic Post-treatment 

Spin Coating Equipment

3D Automatic Measuring 

IC-Mask Writer Equipment

AOI Inspection Equipment

Optical Density Meter

Precision Backlighting for Glass Calibration Targets

From simple to complex designs, our laser cutting technology delivers exactly what you need.
  • Large illumination area: 2.1 × 1.4 m
  • Superior uniformity: 95%
  • Dual-spectrum capability: IR and visible light
  • High brightness output
  • Ultra-slim profile
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Perfect Applications

Industries that demand the ultimate in calibration precision

Industrial Measurement

Machine vision

Factory Automation

Medical Imaging

Scientific Research

Autonomous Vehicle Vision

Why Custom Chrome Test Targets from us?

Certified Quality

Independent third-party certification available upon request.

No Minimum Order

Single-piece orders welcome – no quantity requirements.

Fast Delivery

Custom production completed in just 5-10 business days.

Free CAD Conversion

Our engineers will convert your drawings to digital format at no cost.

LET’S TALK BUSINESS

Ready to Take Your Project to the Next Level?

Tell us any of your requirements on test target:

Custom Manufacturing (OEM/ODM)
– Purpose-built to your exact specs

Low MOQ Starts from 1pcs
– End-to-end support from prototype to production

Trade & Distribution
– Volume discounts for channel partners

Global Sales & Support
– Build your brand with our proven quality

3rd-Party Certification
– Test our quality risk-free

Fast-Track Quotes
– Competitive pricing delivered within 24 hours

Request A Quote

Please fill out our quote request form or email us at sales@visionlabhub.com, and we will get back to you within 24 hours!

Contact Info

FAQs

Questions people often asked
Feature size accuracy refers to how precisely the dimensions of patterns (dots, lines, squares) match their intended measurements. Chrome on quartz glass targets achieve ±0.1μm accuracy, meaning features are within 0.1 micrometers of their designed size – that’s 1000 times smaller than a human hair.
Optical density measures how much light a coating blocks. Higher OD means better contrast. Chrome coatings achieve OD >3.0 to >5.0, blocking 99.9% or more of incident light for sharp, high-contrast patterns essential for machine vision systems.
  • Dimensional inspection reports
  • Optical performance data
  • Material certificates
  • Traceability documentation

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