2940nm Er:YAG & 1064nm Fiber Laser Safety Window

JTBYShield Er and fiber laser safety window is a finished PMMA viewing panel designed for integration into laser machine enclosures, access doors, observation ports, and OEM laser equipment.

Unlike a standard YAG acrylic sheet supplied primarily as raw filter material, this viewing shield can be cut, drilled, shaped, and edge-finished according to the machine drawing, allowing equipment manufacturers and system integrators to install it directly into their laser protection structure.

The laser safety filter is designed for multi-wavelength laser viewing applications where protection is required for both 2940nm Er lasers and common 1064nm / 1080nm fiber laser sources.

Its key advantage is the combination of OD6+ protection around the Er wavelength with broader near-infrared protection for fiber laser wavelengths in one PMMA viewing panel.

OD6+ Protection for 2940nm Er Lasers

Er laser systems typically operate at approximately 2940nm, which falls within the filter's 2700–3000nm protection range.

Within this band, the filter provides:

2700–3000nm: OD6+

This makes 2940nm one of the primary protection wavelengths for this viewing shield and is especially relevant to equipment where an Er laser source must be observed through a transparent machine window.

Typical integration can include:

• Er laser equipment viewing windows
• Medical and aesthetic laser machine housings
• OEM laser equipment access doors
• Laboratory Er systems
• Multi-wavelength laser platforms

For applications centered on 2940nm, the OD6+ performance at the Er wavelength is the main optical protection feature of this filter.

OD4+ Protection for 1064nm & 1080nm Fiber Lasers

The same filter also provides:

830–1700nm: OD4+

This wavelength range includes common fiber laser operating wavelengths such as:

1064nm

1080nm

As a result, the XL4PW6D5T can be considered for equipment where both Er and near-infrared fiber laser wavelengths are present and where OD4+ protection at 1064/1080nm meets the required protection level.

This multi-wavelength capability can reduce the need to use separate viewing filters for different laser sources within the same machine or optical system.

35% Visible Light Transmission

The filter provides approximately 35% visible light transmission (VLT).

The lower VLT compared with some dedicated single-wavelength laser filters reflects the broader absorption characteristics required to provide protection across multiple infrared wavelength regions.

The 35% VLT still allows operators and service engineers to visually monitor:

• Workpiece position
• Machine operating status
• Optical components
• Fixtures and motion systems
• Enclosed processing areas

For applications using only a 1064nm fiber laser where higher visible light transmission is a priority, a dedicated fiber laser filter may be a better option.

Key Optical Specifications

Why These Two Wavelengths Matter

The value of this filter is not simply that it covers a broad wavelength range. Its main advantage is that one viewing panel can address two distinct laser environments:

2940nm Er → OD6+ protection

and

1064/1080nm Fiber Laser → OD4+ protection

This makes the XL4PW6D5T particularly suitable for multi-wavelength laser equipment, OEM systems, and laboratory platforms where a single machine viewing window needs to support both Er and fiber laser sources.

Final suitability should be confirmed against the actual laser wavelength, output characteristics, operating mode, exposure conditions, and required protection level.

For standard industrial fiber laser machines that only run at a single wavelength, a standalone 1064nm laser safety window is usually the simplest and most cost-effective protective solution. Single-wavelength filters deliver targeted laser blocking performance and fit well for fixed, single-source laser processing equipment.

However, many custom OEM laser systems, medical laser devices, optical laboratory platforms and R&D workstations integrate multiple laser sources with different wavelengths. Equipping individual laser safety windows for each wavelength brings complicated structural design, troublesome installation and higher integration costs, while also affecting the overall aesthetics and tightness of the equipment observation window.

Our XL4PW6D5T multi-wavelength laser safety filter solves this practical industry pain point perfectly. It is professionally engineered to offer reliable dual-band laser protection with one single panel, covering both 2940nm Er:YAG laser and 1064nm/1080nm fiber laser wavelengths. It simplifies equipment design, reduces assembly procedures, and provides stable laser shielding for multi-wavelength laser devices and laboratory hybrid laser systems.

One Panel for Er:YAG & Fiber Laser Sources

The filter combines:

OD6+ across 2700–3000nm for 2940nm Er:YAG lasers

OD4+ across 830–1700nm for 1064nm and 1080nm fiber lasers

35% visible light transmission for observation through the machine window

This allows one finished laser viewing panel to support multiple laser wavelengths when the required protection levels match the equipment design.

When a Multi-Wavelength Filter Makes More Sense

This type of filter is particularly useful when:

• One laser machine contains both Er:YAG and fiber laser sources
• An OEM platform is offered with different laser configurations
• A laboratory uses multiple IR laser wavelengths within the same protected area
• One machine observation window must cover both 2940nm and 1064/1080nm
• Equipment manufacturers want to simplify viewing-window integration across multi-laser systems

For these applications, a multi-wavelength laser safety window can reduce the need for separate protective panels while keeping the machine viewing area consistent.

When a Dedicated 1064nm Window May Be Better

A broader filter is not automatically the best choice for every fiber laser machine.

If the equipment operates only at 1064nm or 1080nm, a dedicated fiber laser safety window may provide a more optimized combination of protection level and visible light transmission.

A dedicated filter should also be considered when:

• Higher optical density at 1064nm is required
• Higher visible light transmission is a priority
• The machine uses only one laser wavelength
• The required certification or protection rating differs from this filter
• The actual exposure conditions require another filter configuration

The correct choice therefore depends on whether the application needs single-wavelength optimization or multi-wavelength coverage in one viewing panel.

Best Fit: Multi-Source Laser Equipment

The main value of XL4PW6D5T is not simply its broad spectral coverage. It is the ability to combine 2940nm Er:YAG protection and 1064/1080nm fiber laser protection in one machine-ready viewing panel.

For OEM equipment using multiple laser sources, this provides a practical way to simplify window selection, machining, and equipment integration while maintaining wavelength-specific protection.

For OEM laser equipment and professional safety procurement, optical performance should be supported by identifiable technical documentation, while the finished viewing panel should be manufactured according to the actual machine design.

JTBYShield combines filter test documentation with custom panel processing, helping customers verify the XL4PW6D5T filter before integrating it into Er, fiber laser, or multi-wavelength laser equipment.

Technical Documentation for XL4PW6D5T

The XL4PW6D5T filter can be supported by available technical information corresponding to its wavelength-specific protection performance.

Key data includes:

• Filter Model: XL4PW6D5T
• 2940nm Er:YAG: OD6+ within 2700–3000nm
• 1064nm / 1080nm Fiber Laser: OD4+ within 830–1700nm
• Visible Light Transmission: Approx. 35%
• Spectral transmission / optical density curve
• Wavelength-specific OD test data
• Applicable EN12254 test information
• Test report number
• Testing laboratory information
• Filter identification and marking

Where available, the spectral curve and test report can be provided for engineering or procurement review before the viewing panel is approved for use in an OEM laser system.

Any EN12254 rating or certification information should correspond to the actual tested filter configuration and should be presented with its applicable wavelength range and report reference.

Filter Identification & Traceability

For machine integration and future replacement, the finished laser safety window should remain identifiable after processing.

Depending on the project, filter identification can include:

• XL4PW6D5T model marking
• Protection wavelength information
• Optical density information
• Batch or production identification
• Applicable safety marking

This helps OEM manufacturers and maintenance teams confirm which laser protective filter is installed and simplifies repeat ordering of replacement viewing panels.

Custom Cut-to-Drawing Viewing Panels

Unlike a standard full acrylic sheet, this product can be supplied as a finished laser viewing panel ready for machine integration.

Customers can provide a dimensional drawing, CAD file, or installation requirements for custom processing.

Available processing can include:

• Custom width and height
• Rectangular or irregular CNC-cut profiles
• Mounting holes
• Custom hole positions and diameters
• Rounded corners
• Edge finishing
• Machine-door or enclosure-window matching
• Project-specific labeling

This allows the same XL4PW6D5T filter to be manufactured into a viewing window that matches the actual equipment structure rather than requiring the customer to process the raw acrylic sheet after delivery.

From Laser Requirement to Finished Panel

For custom projects, customers can provide:

Laser information

Operating wavelength or multiple wavelengths

Laser type

Output power

CW or pulsed operation

Required protection level

Panel information

Required width × height

Thickness requirement

Window opening size

Mounting-hole positions

Edge or corner requirements

CAD / DXF / dimensional drawing

Required quantity

Based on these parameters, JTBYShield can confirm the filter configuration and evaluate the required machining before production.

The result is a tested multi-wavelength laser protective filter manufactured into a custom finished viewing panel for direct OEM equipment integration.

Action Call
🔧 Request Custom Solution: Submit laser specs + CAD drawings for 24h OD validation
⚡ Rapid Deployment: Standard panels ship within 72hr

Technical Notes

Material Safety: Absorptive PMMA neutralizes laser energy without secondary reflections, essential for high-pulse Er:YAG systems 

Compliance: OD values verified per EN122504 test protocols for industrial laser shielding

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