Patterned substrate: Diameter 20-200mm, Thickness 0.5-3mm

Q: What determines the resolution of a patterned substrate?

Resolution is determined by the number of pattern lines per revolution and the optical system's ability to detect transitions, with higher line counts enabling finer angular measurement.

Q: Can patterned substrates be customized for specific applications?

Yes, patterns can be customized for unique resolutions, diameters, reference marks, or multi-track configurations for absolute position encoding.

Q: How does environmental contamination affect performance?

Dust or oil on the surface can scatter light, causing signal degradation; sealed encoders or regular cleaning maintenance is recommended for harsh environments.

Component Specifications

Definition

A precision-engineered disc or strip component with optically detectable patterns (typically alternating reflective/non-reflective or transparent/opaque regions) used in rotary encoders to convert mechanical rotation into digital position signals through optical sensing.

Working Principle

Works on optical interruption/detection principle where light from an emitter passes through or reflects off patterned areas to a photodetector, generating electrical pulses corresponding to rotational movement and position.

Materials

Glass (borosilicate or quartz) with chromium or aluminum coatings, or engineered polymers (polycarbonate/PMMA) with deposited metal patterns; anti-reflective coatings optional.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Accuracy	±1 arc-second to ±5 arc-minutes
Diameter	20-200mm
Flatness	<5μm
Thickness	0.5-3mm
Surface Roughness	Ra<0.1μm
Pattern Resolution	100-10,000 lines/revolution
Operating Temperature	-40°C to +85°C

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 16063, DIN 53019, IEC 60068

Parent Products

This component is used in the following industrial products

Precision Rotary Encoder Disc

Optical disc with precisely patterned tracks for angular position measurement in rotary encoders.

View Product Details

Engineering Analysis

Risks & Mitigation

Pattern wear/damage
Contamination accumulation
Thermal expansion mismatch
Mounting misalignment
Electrostatic discharge damage during handling

FMEA Triads

Trigger: Mechanical abrasion from contact
Failure: Pattern degradation causing signal loss or errors
Mitigation: Use non-contact optical sensing, protective coatings, and proper clearance design

Trigger: Thermal cycling stress
Failure: Substrate warping or pattern detachment
Mitigation: Select materials with matched thermal expansion coefficients and stable adhesives

Trigger: Improper cleaning procedures
Failure: Surface scratches or chemical damage
Mitigation: Follow manufacturer cleaning guidelines using approved solvents and lint-free wipes

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Pattern position tolerance ±0.5μm, angular accuracy ±3 arc-seconds for high-grade models

Test Method

Optical comparator inspection, laser interferometry for angular accuracy, environmental testing per IEC 60068 standards

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 Patterned substrate

Manufacturer profiles associated with Patterned substrate.

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Frequently Asked Questions

What determines the resolution of a patterned substrate?