Optical Surface Analyzer for Hard Drive Platter Polishing

Product Specifications

Technical details and manufacturing context for Optical Surface Analyzer

Definition

The Optical Surface Analyzer is a component used within an Automated Computer Hard Drive Platter Polishing Machine. It employs advanced optical measurement techniques to assess surface topography, roughness, flatness, and detect defects on hard drive platters. The analyzer provides real-time feedback to the polishing system, ensuring platters meet stringent surface quality requirements for optimal hard drive performance and data storage reliability.

Operating on principles such as laser interferometry, confocal microscopy, or white light interferometry, the analyzer projects light onto the platter surface and measures reflected or scattered light patterns to create detailed 3D surface maps. Algorithms process these measurements to calculate parameters like Ra (roughness average), flatness deviations, and identify microscopic defects such as scratches, pits, or contamination.

Key specifications include a measurement range of 0–100 nm, resolution of 0.01 nm, repeatability of ±0.05 nm, scan speed of 5–20 mm/s, and sample size of 25–95 mm. Operating temperature range is 15–35 °C, humidity 20–80% RH, power supply 100–240 V AC, and power consumption ≤500 W. Dimensions are 600×800×1500 mm (W×D×H), weight 120–150 kg, protection class IP54 (IEC 60529), and laser class 3B (IEC 60825-1).

Materials include optical-grade glass lenses, precision aluminum alloy housing, stainless steel mounting components, and high-purity silicon sensors. These specifications are reference ranges; verify model-specific values and standards with the legal manufacturer or supplier before procurement or use.

Working Principle

The analyzer uses laser interferometry, confocal microscopy, or white light interferometry to project light onto the platter surface. It measures reflected or scattered light patterns to create detailed 3D surface maps. Algorithms process these measurements to calculate surface parameters like Ra, flatness deviations, and detect microscopic defects such as scratches, pits, or contamination. The analyzer provides real-time feedback to the polishing system for process control.

Common Materials

Optical-grade glass lenses, Precision aluminum alloy housing, Stainless steel mounting components, High-purity silicon sensors

Technical Parameters

Parameter	Typical range	Notes & selection driver
Measurement Range	0–100 nm	Covers typical roughness of polished platters
Resolution	0.01 nm	Sub-nanometer sensitivity for fine defects
Repeatability	±0.05 nm	Ensures consistent process control
Scan Speed	5–20 mm/s	Faster speeds reduce throughput time
Sample Size	25–95 mm	Fits standard hard drive platter diameters
Operating Temperature	15–35 °C	Outside range may affect measurement accuracy
Operating Humidity	20–80 % RH	Non-condensing; high humidity can cause optical errors
Power Supply	100–240 V AC	Universal input with auto-ranging
Power Consumption	≤500 W	Includes laser and electronics
Dimensions (W×D×H)	600×800×1500 mm	Bench-top unit with compact footprint
Weight	120–150 kg	Heavy for stability; requires sturdy table
Protection Class	IP54	Dust-protected and splash-resistantIEC 60529
Laser Class	Class 3B	Requires safety eyewearIEC 60825-1

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

Components / BOM

Optical Sensor Head
Emits and receives light signals for surface measurement

Material: Aluminum alloy with optical-grade glass
Precision Positioning Stage
Moves the sensor head accurately over the platter surface

Material: Stainless steel with ceramic bearings
Data Processing Unit
Processes optical signals into surface measurement data

Material: Electronic components in aluminum housing
Cooling System
Maintains stable temperature for measurement accuracy

Material: Copper heat pipes with aluminum fins

Manufacturers of Optical Surface Analyzer

Manufacturer profiles associated with Optical Surface Analyzer.

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Frequently Asked Questions

What does the Optical Surface Analyzer measure?

It measures surface topography, roughness, flatness, and detects defects on hard drive platters during polishing. It provides parameters like Ra (roughness average) and flatness deviations.

What measurement techniques does it use?

It can use laser interferometry, confocal microscopy, or white light interferometry to project light and analyze reflected patterns, creating 3D surface maps.

What are the key specifications to verify?

Verify measurement range (0-100 nm), resolution (0.01 nm), repeatability (±0.05 nm), scan speed (5-20 mm/s), sample size (25-95 mm), operating temperature (15-35 °C), humidity (20-80% RH), power supply (100-240 V AC), power consumption (≤500 W), dimensions, weight, protection class (IP54), and laser class (3B).

How should I confirm compliance with standards?

The listed standards (IEC 60529 for protection, IEC 60825-1 for laser) are references. Confirm actual compliance and certification with the legal manufacturer or supplier for the specific model.

Data Basis

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Preliminary Technical Classification

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pressure:	Atmospheric pressure only (non-contact measurement)
other spec:	Slurry concentration: 0-30% solids by weight, Flow rate: 0-5 m/s across measurement zone, Vibration tolerance: <0.5g RMS, Cleanroom class: ISO 5 or better recommended
temperature:	+15°C to +35°C

Optical Surface Analyzer

Product Specifications

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Reliability & Engineering Risk Analysis

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