INDUSTRY COMPONENT

Patterned substrate

Patterned substrate for optical rotary encoders with precision markings for angular position detection.

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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
  • 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
Standards
ISO 16063, DIN 53019, IEC 60068

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Patterned substrate.

optical encoder disc rotary encoder pattern precision substrate angular position sensor encoder strip photoelectric encoder component Patterned substrate Patterned substrate in Computer, Electronic and Optical Product Manufacturing

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.

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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

Interchangeable Parts

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

Buyer Feedback

★★★★☆ 4.7 / 5.0 (33 reviews)

"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Patterned substrate meets all ISO standards."

"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Patterned substrate arrived with full certification."

"Great transparency on the Patterned substrate components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."

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Frequently Asked Questions

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.

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.

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.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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