Custom Off-Axis Beam Expanders

Custom Off-Axis Beam Expanders

At Welch Mechanical Designs (WMD), we specialize in creating custom off-axis beam expanders tailored for the most demanding commercial, military, and scientific applications. Our expertise lies in delivering precision-engineered solutions that meet the complex requirements of advanced optical systems.


Our Off-Axis Beam Expander Capabilities

Our off-axis beam expanders represent our decades of optomechanical engineering experience, combining cutting-edge technology with unique customization options. We've developed a range of capabilities that allow us to meet the most exact specifications.

Advanced Customization Options

We offer a range of customization possibilities to meet your specifications. Our off-axis beam expanders can be engineered for operating wavelengths from UV to long-wave IR, with entrance apertures as small as 1 mm and output apertures up to 1,000 mm. We provide focus adjustment methods, including manual, motorized, athermalized or fixed options. For high-energy systems, we offer specialized coating options to ensure optimal performance and durability.

Precision Manufacturing Techniques

Our manufacturing processes ensure quality and performance. We utilize polished low-expansion glass optics for minimal wavefront errors, ensuring the highest level of precision. For rapid delivery and cost-effectiveness, we employ single-point diamond turned optics. Our monolithic machined structures guarantee maximum rigidity and stability, crucial for maintaining alignment in every environment.

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Engineering Advantages

At WMD, we've developed a suite of engineering solutions that set our off-axis beam expanders apart from the competition. These features ensure that our products not only meet but exceed the performance requirements of even the most unique applications.

Environmental Resilience

We employ advanced ruggedization techniques for deployment in challenging environments, ensuring your optical systems perform reliably under extreme conditions. Our passive athermalization approach ensures consistent performance across a wide temperature range, maintaining optical integrity in varying thermal environments.

Structural Analysis Services

We offer structural analysis to tune designs for specific requirements. Our services include deflection analysis for optimal performance, strength optimization to ensure durability and longevity, and vibration mode analysis for stability in dynamic environments.

Collaboration and Support

We believe that creating the perfect off-axis beam expander is a collaborative process. We work closely with our clients from initial concept to final delivery and beyond, ensuring that every aspect of the design meets their specific needs.

Design and Development Process

Our collaborative engineering approach ensures your needs are met at every stage of the project. We leverage rapid prototyping and iterative design capabilities for efficient problem-solving, allowing us to refine and perfect your off-axis beam expander design quickly and effectively.

Ongoing Technical Support

We provide comprehensive post-delivery support to ensure optimal performance of your off-axis beam expanders. Our commitment extends beyond the initial delivery, with flexibility for future modifications or upgrades as your needs evolve. This ongoing support ensures that your optical systems continue to meet your changing requirements over time.

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women reviewing techinical specs

Technical Specifications

Our off-axis beam expanders are engineered to meet the most demanding technical requirements. We offer a wide range of performance parameters and customization options to ensure that each expander is perfectly suited to its intended use.

Performance Parameters

Our off-axis beam expanders are designed to meet exacting standards. We consistently achieve transmitted wavefront errors less than λ/20RMS (633 nm), ensuring exceptional optical quality. Our reflectivity levels exceed 99% across specified wavelength ranges, maximizing efficiency. Thermal stability is maintained over the operational temperature range, guaranteeing consistent performance in varying conditions. Our precision machining tolerances reach down to ±0.001 mm.

Customization Ranges

Our off-axis beam expanders offer extensive customization options. We can accommodate entrance apertures from 1 mm and output apertures up to 1000 mm. Our magnification ranges cater to a wide variety of project requirements. Focus adjustment options include fixed, manual and motorized configurations. Our standard operating temperature range spans from -40°C to +85°C, with extended ranges available for extreme environments.

Request a Consultation

We're ready to help you find the perfect off-axis beam expander solution for your project. Our team of expert engineers is available to discuss your project requirements and provide insights on how our custom designs can enhance your optical systems.