Optical Chamber for Sensor Systems - Specifications and Verification

Product Specifications

Technical details and manufacturing context for Optical Chamber

Definition

The optical chamber is a critical component of the Sensor Module, providing a protected, stable environment for optical elements such as lenses, mirrors, detectors, and light sources. It isolates sensitive optical components from external contaminants, vibrations, and stray light while maintaining specific atmospheric conditions (e.g. temperature, humidity, gas composition) required for accurate optical measurements and signal processing. The chamber is typically constructed from aluminum alloy or stainless steel, with optical-grade glass windows for light entry and exit. It features internal mounting structures for precise optical alignment and may include ports for environmental control, such as temperature stabilization, vacuum or pressure regulation, and inert gas purging. Key parameters include an internal diameter of 50–200 mm, internal volume of 0.1–5.0 L, operating pressure of 1.0–1.6 MPa, leak rate ≤1×10⁻⁹ Pa·m³/s (per ISO 20485), operating temperature range of -40 to 85 °C, optical window flatness of λ/10 at 632.8 nm (per ISO 10110-5), internal surface roughness Ra 0.4–0.8 μm (per ISO 4287), material grade 316L stainless steel (per ASTM A240), weight of 2–15 kg, and IP rating of IP54–IP65 (per IEC 60529). These values are directory reference ranges and must be confirmed for the specific model and application. The chamber is designed for use in sensor systems requiring controlled optical environments, such as spectrometers, interferometers, or imaging systems. It is not a standalone product but a component that integrates with other sensor modules. For procurement, verify model-specific specifications and standards with the legal manufacturer or supplier.

Working Principle

The optical chamber functions by creating a controlled internal environment where light can be directed, focused, reflected, or detected without interference. It typically incorporates optical windows or ports for light entry/exit, internal mounting structures for precise optical alignment, and may include features for environmental control (temperature stabilization, vacuum/pressure control, inert gas purging) to ensure consistent optical performance and measurement accuracy. The chamber's sealed design prevents contaminants and stray light from affecting measurements, while its structural rigidity minimizes vibration-induced errors. The operating pressure range of 1.0–1.6 MPa ensures proper sealing, and the low leak rate maintains the controlled atmosphere. The optical window flatness of λ/10 minimizes wavefront distortion, and the internal surface roughness reduces scattering and contamination. The chamber's temperature range and IP rating define its operational boundaries, and the material grade ensures corrosion resistance in clean environments.

Common Materials

Aluminum alloy, Stainless steel, Optical-grade glass

Technical Parameters

Parameter	Typical range	Notes & selection driver
Internal Diameter	50–200 mm	Determines the size of optical components that can be accommodated.
Internal Volume	0.1–5.0 L	Affects gas volume and purge time.
Leak Rate	≤1×10⁻⁹ Pa·m³/s	Helium leak test; critical for maintaining controlled atmosphere.ISO 20485
Operating Temperature	-40–85 °C	Seals and adhesives may fail outside this range.
Optical Window Flatness	λ/10 at 632.8 nm	Ensures minimal wavefront distortion.ISO 10110-5
Surface Roughness (Internal)	Ra 0.4–0.8 μm	Smooth finish reduces scattering and contamination.ISO 4287
Material Grade	316L ASTM	Corrosion-resistant stainless steel for clean environments.ASTM A240
Weight	2–15 kg	Affects mounting and handling.

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

Chamber Body
The chamber shell itself: encloses the process volume and carries the operating pressure and temperature.
Optical window Part
Provides transparent interface for light transmission while maintaining chamber seal

Material: Optical glass or quartz
Mounting plate Part
Precisely positions and secures internal optical components

Material: Aluminum or stainless steel
Sealing gasket Part
Creates airtight/light-tight seal between chamber sections

Material: Silicone or fluoropolymer
Temperature control element
Maintains stable internal temperature for optical stability

Material: Peltier device or heating element

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Sensor Module

View system integration details

Particulate Matter Sensor

View system integration details

Manufacturers of Optical Chamber

Manufacturer profiles associated with Optical Chamber.

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Frequently Asked Questions

What is the primary function of an optical chamber?

It provides a sealed, controlled environment for optical components, protecting them from contaminants, vibrations, and stray light, ensuring accurate light-based measurements.

What materials are commonly used for optical chambers?

Aluminum alloy, stainless steel (e.g., 316L), and optical-grade glass for windows, as listed in the directory.

How do I verify the leak rate specification?

The leak rate is specified as ≤1×10⁻⁹ Pa·m³/s per ISO 20485. Confirm the test method and actual value with the manufacturer for your specific model.

What is the significance of the IP rating?

The IP rating (IP54–IP65) indicates protection against dust and water jets. Verify the exact rating for your application environment with the supplier.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 2 bar absolute
other spec:	Flow Rate: 0-5 L/min, Slurry Concentration: <1% solids by volume
temperature:	-20°C to +80°C

Optical Chamber

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards