Base Substrate: Thickness Tolerance ± 0.01 mm

Q: What is the primary function of a Base Substrate in calibration targets?

The Base Substrate provides a dimensionally stable, flat reference surface that ensures calibration patterns maintain accurate spatial relationships and positions during measurement system calibration.

Q: How does material selection affect Base Substrate performance?

Material selection impacts thermal stability, surface finish quality, durability, and compatibility with calibration marking methods. Low-CTE materials like fused quartz minimize thermal drift, while ceramics offer excellent hardness and chemical resistance.

Q: What maintenance is required for Base Substrates?

Regular cleaning with appropriate solvents, protection from mechanical damage, storage in controlled environments (temperature/humidity), and periodic verification of flatness using interferometry or precision straightedges.

Component Specifications

Definition

A Base Substrate is a precisely manufactured flat surface component that serves as the foundational platform for calibration targets in optical, imaging, and measurement systems. It provides dimensional stability, surface uniformity, and reference geometry against which calibration patterns, grids, or fiducial marks are applied or measured. This component ensures consistent reference points for calibrating cameras, microscopes, coordinate measuring machines (CMMs), and other precision equipment.

Working Principle

The Base Substrate operates by providing a geometrically stable and dimensionally accurate reference plane. When incorporated into a calibration target, it maintains precise flatness and surface characteristics that allow calibration patterns to be measured against known standards. Its thermal stability minimizes expansion/contraction, while its surface properties ensure optimal adhesion and visibility of calibration markings.

Materials

Typically made from borosilicate glass, fused quartz, ceramic (alumina or zirconia), or precision-ground stainless steel. Materials are selected for low thermal expansion coefficient (CTE < 5×10⁻⁶/K), high stiffness, chemical resistance, and excellent surface finish capability (Ra < 0.1 μm).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flatness	≤ 1 μm over 100 mm
Surface Hardness	≥ 6 Mohs (glass/ceramic) or ≥ 40 HRC (metal)
Maximum Dimension	Up to 300×300 mm standard
Surface Roughness	Ra ≤ 0.05 μm
Thickness Tolerance	± 0.01 mm
Thermal Expansion Coefficient	< 5×10⁻⁶/K

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 10110-5, ISO 14999-4, DIN 3140, DIN 876

Parent Products

This component is used in the following industrial products

Calibration Target

A precision reference object used to calibrate and align 3D camera systems by providing known geometric patterns and dimensions.

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Engineering Analysis

Risks & Mitigation

Surface contamination affecting calibration accuracy
Thermal expansion causing dimensional drift
Mechanical damage (scratches, chips) compromising flatness
Improper cleaning damaging surface coatings or markings

FMEA Triads

Trigger: Thermal cycling in uncontrolled environments
Failure: Dimensional instability exceeding tolerance limits
Mitigation: Use low-CTE materials, implement environmental controls, and allow thermal stabilization before calibration

Trigger: Improper handling during installation or cleaning
Failure: Surface damage (scratches, contamination) affecting calibration reference
Mitigation: Implement handling procedures, use protective covers, train personnel, and establish cleaning protocols

Trigger: Incompatible calibration marking materials
Failure: Poor adhesion or degradation of calibration patterns
Mitigation: Validate material compatibility, conduct adhesion tests, and follow manufacturer specifications for marking applications

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Flatness: ≤ 1 μm/100 mm, Surface roughness: Ra ≤ 0.05 μm, Dimensional stability: ≤ 0.5 μm/°C

Test Method

Interferometry for flatness, profilometry for surface roughness, thermal cycling tests for dimensional stability, coordinate measurement for geometric accuracy

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Base Substrate

Manufacturer profiles associated with Base Substrate.

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Frequently Asked Questions

What is the primary function of a Base Substrate in calibration targets?