Quartz Laser Protective Lens With 1064 nm AR Coating

This laser protective lens is manufactured from quartz. In laser optical systems, protective lenses are typically positioned toward the outer part of the optical path to create a physical barrier between the operating environment and the internal optical components. Quartz offers excellent optical properties and good thermal stability, making it ideal for laser optical components that require reliability and long-term stability.

In addition to lens dimensions, laser applications must also consider the compatibility between the substrate, operating wavelength, and surface coatings. This product features a 1064 nm AR (Anti-Reflection) coating optimized for the operating wavelength band around 1064 nm, which helps reduce surface reflections and improve effective transmission within the optical system.

In actual laser processing environments, protective lenses also help isolate dust, fumes, and fine spatter generated during processing, reducing the likelihood of these contaminants directly adhering to more critical optical components inside the system. Therefore, selecting the appropriate quartz protective lens not only affects beam transmission but also helps reduce the risk of contamination and damage to internal optical components.

1. Good Optical Performance

Quartz is a commonly used substrate material for laser optical components. Its optical properties make it suitable for a wide range of precision optical and laser systems, including protective windows, optical windows, and other transmissive optical components.

2. Good Thermal Stability

During laser system operation, optical components may be exposed to temperature variations. Quartz has a relatively low coefficient of thermal expansion, which helps maintain dimensional and structural stability under changing thermal conditions.

3. Suitable for Precision Optical Processing

Quartz can be precisely ground, polished, and optically coated. Combined with appropriate surface finishing and AR coating processes, it can meet the requirements of optical windows used in different laser systems.

4. Suitable for Industrial Laser Environments

In laser cutting, welding, marking, and other industrial laser applications, optical components near the front end of the optical path may be exposed to dust, smoke, and processing spatter. Quartz protective windows can serve as maintainable and replaceable optical components, helping isolate the working environment from internal optical components.

Bare optical surfaces without coating will generate Fresnel reflection, which causes extra optical loss when laser beams transmit through protective windows. This unwanted reflection greatly affects the working efficiency of laser optical systems.

The 1064nm Anti-Reflection (AR) coating is professionally optimized for 1064nm band laser scenarios. This precision coating can effectively suppress surface reflection at the 1064nm target wavelength, significantly enhance the light transmittance of laser protective windows, and reduce light energy loss during transmission.

Accordingly, the selection of laser protective windows should take multiple core parameters into account. Apart from conventional specifications including window diameter and thickness, the matching degree between AR coating wavelength and the actual operating wavelength of the laser system is a critical indicator that cannot be ignored, which directly determines the overall transmission performance and service effect of the laser window.

Laser Source → Optical Components → 1064nm Optical Path → Quartz Protective Window → Working Area

Within this configuration, the protective window generally performs two main functions: allowing the target laser wavelength to pass through and providing a physical barrier between precision internal optical components and the external processing environment.

For laser equipment used frequently in industrial processing, using a protective window as an accessible, inspectable, and replaceable front-end optical component is a common system design approach. It helps prevent contaminants from directly reaching more critical internal optical components.

This Ø18 × 2mm quartz protective window can be used in various optical systems depending on the specific system design, including:

1064nm Laser Systems: Suitable for optical paths designed around the 1064nm wavelength.

Laser Cutting Equipment: Can be installed in relevant optical assemblies to help reduce the risk of processing contaminants entering the internal optical system.

Laser Welding Equipment: Can serve as a protective optical window to isolate internal components from smoke, dust, and spatter generated during welding.

Laser Marking Equipment: Suitable for compatible 1064nm laser optical modules.

Industrial Laser Equipment: Can be used in automated laser processing systems and related optical assemblies.

Optical System Integration: Suitable for OEM laser equipment, laboratory optical setups, and customized optical modules.

Actual suitability should be evaluated according to laser power, beam parameters, mounting configuration, operating wavelength, and coating specifications.

Quartz Substrate + 1064nm AR Coating

Both the substrate and coating are designed around laser optical applications. Quartz provides good optical and thermal stability, while the AR coating helps reduce surface reflection at the target wavelength.

Compact 18mm Diameter

The Ø18mm diameter makes this protective window suitable for compact optical assemblies and laser modules, while the 2mm thickness facilitates integration into space-constrained optical structures.

Protection for Valuable Optical Components

As a front-end optical component, the protective window helps reduce direct exposure of internal optics to dust, smoke, spatter, and other processing contaminants, providing an additional layer of protection for critical optical components.

OEM & Customization Support

In addition to the standard Ø18 × 2mm specification, different diameters, thicknesses, materials, and coating options can be discussed according to project requirements, making the product suitable for equipment manufacturers, system integrators, OEM projects, and volume purchasing.

To maintain the optical performance of the protective window, avoid touching the effective optical surfaces directly during installation and maintenance. Regular inspections should check for visible dust, contamination, scratches, coating abnormalities, or other surface damage.

When cleaning the window, use cleaning methods and materials specifically intended for precision optical components. Avoid rough or abrasive materials that may damage the AR coating. If contamination cannot be removed or visible surface damage occurs, evaluate whether the protective window should be replaced according to the equipment maintenance requirements.

Please note that this protective window is not laser safety eyewear and does not replace the safety enclosure or other laser protection measures required for laser equipment. Always follow the safety and maintenance instructions provided by the laser equipment manufacturer.

Q1: What material is this laser protective window made of?

This product uses Quartz as the substrate material. Quartz offers good optical performance and thermal stability and is widely used for optical components in laser and precision optical systems.

Q2: What are the dimensions of the protective window?

The standard dimensions are 18mm in diameter and 2mm in thickness (Ø18 × 2mm).

Q3: Does the window have an optical coating?

Yes. This model features a 1064nm AR coating, primarily designed for applications around the 1064nm wavelength to help reduce surface reflection at the target wavelength.

Q4: Can it be used with 1064nm laser equipment?

The AR coating is designed for 1064nm applications. However, laser systems can vary in power density, beam size, angle of incidence, and operating environment. Compatibility should therefore be confirmed according to the actual optical parameters of the equipment before volume use.

Q5: What are the advantages of a quartz protective window?

Quartz provides good optical properties, a relatively low coefficient of thermal expansion, and compatibility with precision optical processing and coating. These characteristics make it suitable for various laser optical windows and protective optical components.

Q6: What is the function of a protective window?

A protective window helps isolate the external working environment from internal optical components while allowing the target laser wavelength to pass through. In industrial laser equipment, it can help reduce the risk of dust, smoke, and processing spatter directly contaminating internal optics.

Q7: Can other sizes or coatings be customized?

Yes. Different diameters, thicknesses, substrate materials, and coating wavelengths can be discussed according to specific project requirements. For customization, it is recommended to provide the operating wavelength, dimensions, application environment, and relevant optical specifications.

If your equipment uses a 1064nm laser source and requires a compact optical protection solution with a quartz substrate, this Ø18mm × 2mm laser protective window with 1064nm AR coating can be considered as an option for your application.

For equipment manufacturers, laser system integrators, and OEM projects, customized solutions with different dimensions, thicknesses, quartz substrates, and optical coatings can also be provided according to drawings or technical requirements.

When requesting a quotation, providing the operating wavelength, required dimensions, quantity, and key optical specifications can help ensure a more accurate product match.

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