Substrate Holder for Optical Lens Coating

Product Specifications

Technical details and manufacturing context for Substrate Holder

Definition

The substrate holder is a critical component within the Precision Optical Lens Coating Chamber designed to securely position and maintain optical lens substrates during thin-film deposition processes. It ensures precise alignment, stable mounting, and uniform thermal management of substrates to achieve consistent coating thickness and quality across the lens surface. The holder typically interfaces with the chamber's rotation mechanism and heating systems to optimize coating uniformity. Constructed from materials such as stainless steel, aluminum alloy, or ceramic, the holder is engineered to withstand vacuum conditions and temperature variations. It accommodates substrates with diameters ranging from 25.4 to 152.4 mm and thicknesses from 0.5 to 10 mm, with adjustable holding force between 5 and 50 N to prevent deformation. Positioning accuracy is maintained within ±0.05 mm, and repeatability within ±0.02 mm, ensuring consistent placement across batches. The operating temperature range is -20 to 200 °C, and the operating pressure range is 1.0 to 1.6 MPa, referencing. The material grade SUS304 (per ASTM A240) is specified for corrosion resistance, and surface roughness is maintained at Ra 0.8 μm to prevent contamination and scratching. The weight varies from 0.5 to 2.5 kg depending on size and configuration. These parameters serve as reference ranges; actual values must be confirmed with the manufacturer for specific applications. The holder's design minimizes vibration and maintains positional accuracy under vacuum, contributing to uniform coating deposition. It may include integrated heating or cooling elements for thermal stability and electrical grounding if required. As a component, it is essential for achieving high-quality optical coatings in precision lens manufacturing.

Working Principle

The substrate holder operates by mechanically clamping or securing optical lens substrates using precision fixtures. During coating operations, it may rotate to ensure even deposition of coating materials, maintain thermal stability through integrated heating/cooling elements, and provide electrical grounding if required. Its design minimizes vibration and maintains positional accuracy under vacuum conditions. The holding force is adjustable to prevent deformation, and the holder interfaces with the chamber's rotation and heating systems to optimize coating uniformity. The materials and surface finish are selected to avoid contamination and scratching, ensuring consistent coating quality across batches.

Common Materials

Stainless Steel, Aluminum Alloy, Ceramic

Technical Parameters

Parameter	Typical range	Notes & selection driver
Substrate Diameter	25.4–152.4 mm	Standard sizes for optical lenses
Substrate Thickness	0.5–10 mm	Accommodates common lens substrates
Holding Force	5–50 N	Adjustable to prevent deformation
Positioning Accuracy	±0.05 mm	Ensures coating uniformity
Repeatability	±0.02 mm	Consistent placement across batches
Operating Temperature	-20–200 °C	Compatible with vacuum coating processes
Material	SUS304	Corrosion-resistant stainless steelASTM A240
Surface Roughness	Ra 0.8 μm	Prevents contamination and scratching
Weight	0.5–2.5 kg	Depends on size and configuration

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

Clamping Mechanism
Secures the optical lens substrate in place without causing damage or distortion

Material: Stainless Steel
Rotation Interface
Connects to the chamber's drive system to enable substrate rotation during coating

Material: Aluminum Alloy
Thermal Plate Part
Provides controlled heating or cooling to maintain substrate temperature during deposition

Material: Copper or Aluminum
Mounting Base Part
Structural foundation that attaches the holder to the chamber's internal framework

Material: Stainless Steel

Manufacturers of Substrate Holder

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Frequently Asked Questions

What is the substrate holder used for?

It securely holds optical lens substrates during thin-film deposition in a vacuum chamber, ensuring precise alignment and stable mounting for uniform coating.

What materials are available?

The holder is available in stainless steel, aluminum alloy, or ceramic, as listed in the directory. Material grade SUS304 is specified for stainless steel, but confirm with the manufacturer.

What are the key specifications?

It accommodates substrate diameters of 25.4–152.4 mm, thicknesses of 0.5–10 mm, holding force of 5–50 N, positioning accuracy ±0.05 mm, repeatability ±0.02 mm, operating temperature -20 to 200 °C, and pressure 1.0–1.6 MPa. Verify with the manufacturer.

How do I verify compatibility?

Check the substrate dimensions, required holding force, and operating conditions against the listed ranges. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Data Basis

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Preliminary Technical Classification

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pressure:	High vacuum to 10^-6 Torr
other spec:	Max substrate weight: 5 kg, Vibration tolerance: < 0.1 μm RMS
temperature:	-50°C to 300°C

Substrate Holder

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