4D Technology

SPIE Optics + Photonics
2025-08-05 - 2025-08-07
Join us in booth #712 to learn about our latest optical metrology technologies.

MRO Europe
2025-10-14 - 2025-10-15
Join us in London in booth #3907 to learn about our latest innovations in handheld, portable, and automated defect and feature measurement 3D optical gauges!

SPIE Photonics West 2026
2026-01-20 - 2026-01-22
Join 4D Technology at Booth #1355 at SPIE Photonics West 2026- the world’s largest photonics technologies event!
See live demonstrations of our latest vibration & turbulence immune metrology innovations, including the industry-leading PhaseCam interferometer, the AccuFiz Duo short & long coherence Fizeau interferometer, and the new automated 4Di InSpec SR surface roughness gauge – a PRISM award finalist! You can also learn about our latest performance enhancements for our IR interferometry product suite (NIR, SWIR, MWIR, LWIR).

MRO Americas 2026
2026-04-21 - 2026-04-23
Join us in booth #4056 in Orlando, FL to learn about our latest optical, non-contact, and portable innovations in defect, geometry, and surface roughness measurement technologies.
Learn how you can reduce scrap & rework and improve labor utilization & turn-around times with our industrial portfolio for aviation & aerospace engine manufacturing and MRO.
We will be showcasing our 3D area, snapshot surface gauges for MRO, including:

4D InSpec – a handheld, 3D surface gauge to quantify features and defects from 0.1 – 100mils deep.
4D InSpec XL – a 3D surface defect gauge with an expanded measurement area – 0.6in x 0.6in.
4Di InSpec SR – the industry’s first portable, nm-level resolution surface roughness system for precision machined surfaces, enabling high-resolution 3D (aerial) roughness on large and small samples, right on the floor or in the field.
4Di InSpec AMS – a fully automated 3D, optical inspection system with a collaborative robot to measure features such as chamfer, radius, and edge break, and defects such as pits, dings, corrosion and scratches.

Webinar: What’s Next in Aerospace Surface Inspection?
2026-05-28 00:00 (America/Phoenix)
From Handheld 3D to Fully Automated Metrology
Join us on Wednesday, May 28, 2026, from 11:00 a.m. to 12:00 p.m. EDT, to learn how you can take advantage of portable optical gauges to provide 3D measurements with micron resolution right on the shop floor – either handheld or mounted on a robot. Hosted by Aerospace Testing International (ATi)
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Optical, handheld 3D surface inspection has already transformed how aerospace and aviation teams detect defects down to 2 ums, verify surface quality and roughness down to nms, and ensure compliance—delivering far more insight than traditional visual or contact-based methods. But what comes next when throughput, repeatability, and production efficiency become the priority?
In this webinar, we explore the evolution of optical 3D surface inspection from manual measurements to scalable, automated solutions designed for modern aerospace manufacturing and MRO environments. Learn how today’s advanced sensors provide the foundation for automation at every level—whether you’re taking your first steps or targeting lights-out inspection.
We’ll cover multiple automation pathways, including open interfaces for in-house or partner-led integration, cost-effective collaborative robot solutions that are quick to deploy, and fully enclosed Automated Metrology Systems (AMS) built for production. These systems can support multiple sensor heads, flexible part loading, secure data management, and seamless integration into quality workflows.
Finally, we’ll look at the highest level of inspection sophistication: high-speed defect detection that combines wide area optical inspection with precise, quantitative 3D surface measurements—unlocking faster decisions without sacrificing accuracy.
Join us to see how automated optical inspection is shaping the future of aerospace surface quality.
Attendees will learn:
1. Understand the next step after handheld 3D inspection
How optical handheld 3D surface inspection evolves into automated inspection to improve throughput, consistency, and efficiency in aerospace applications.
2. Learn practical automation pathways
Insight into multiple automation options—from open interfaces for in-house or partner integrations to turnkey, collaborative robot solutions.
3. Explore production-ready Automated Metrology Systems (AMS)
What fully enclosed AMS solutions offer for aerospace production, including multi-sensor configurations, flexible part handling, and robust data management.
4. See how inspection speed and capability can scale together
How advanced systems combine wide area optical inspection with high resolution 3D measurements for faster, more capable defect detection.
5. Gain guidance on choosing the right level of automation
How to align inspection sophistication, cost, and performance with your organization’s surface quality and production goals.

ASME Turbo Expo 2026
2026-06-16 - 2026-06-18
Join us in Booth # A69 at ASME’s Turbo Expo 2026 in Milan, Italy, June 16-18, 2026 to learn about our latest optical, non-contact, and portable innovations in defect, geometry, and surface roughness measurement technologies.
Learn how you can reduce scrap & rework and improve labor utilization & turn-around times with our industrial portfolio for aviation & aerospace engine manufacturing and MRO.
We will be showcasing our 3D area, snapshot surface gauges, including:

4D InSpec – a handheld, 3D surface gauge to quantify features and defects from 0.1 – 100mils deep instantaneously, with a measurement area of 0.3in x 0.3in.
4D InSpec XL – a 3D surface defect gauge with an expanded measurement area – 0.6in x 0.6in.
4Di InSpec SR – the industry’s first portable, nm-level resolution surface roughness system for precision machined surfaces, enabling high-resolution 3D (aerial) roughness on large and small samples, right on the floor or in the field.
4Di InSpec AMS – a fully automated 3D, optical inspection system with a collaborative robot to measure features such as chamfer, radius, and edge break, and defects such as pits, dings, corrosion and scratches.

SPIE Astronomical Telescopes + Instrumentation 2026
2026-07-07 - 2026-07-09 | Bella Center Copenhagen
Join us in Copenhagen, Denmark, July 7-9 to see our latest optical interferometer innovations!
Stop by booth #219 where we will be showcasing our PhaseCam and NanoCam; and bring your samples by to get measurements right on the show floor! Learn about 4D Technology’s extensive product portfolio, including:

AccuFiz Fizeau interferometers: Compact, high-performance Fizeau interferometers for shop-wide optics measurement at visible to SWIR wavelengths.
AccuFiz D and Duo interferometers: short coherence Fizeau interferometers for measuring thin, transparent, plane-parallel surfaces < 0.2mm apart without the need for coating.
PhaseCam: vibration-immune Twyman-Green interferometer with high power for measuring large optics and systems, and for long measurement paths. Its super-fast single-frame data acquisition enables measurement despite vibration and turbulence
IR Systems: Measure at wavelength with our PhaseCam and AccuFiz IR systems. NIR – SWIR – MWIR – LWIR
NanoCam HD: a small, non-contact optical profiler for vibration-immune roughness measurement in challenging conditions

2026 Space & Missile Defense Symposium
2026-08-11 - 2026-08-13 | Von Braun Center
Join 4D Technology in Huntsville, Alabama, August 11-13, 2026, at the 2026 Space & Missile Defense Symposium!
Stop by our booth #S3409 and learn more about our optical metrology technologies, including:

AccuFiz Fizeau interferometers: Compact, high-performance Fizeau interferometers for shop-wide optics measurement at visible to SWIR wavelengths.
AccuFiz D and Duo interferometers: short coherence Fizeau interferometers for measuring thin, transparent, plane-parallel surfaces < 0.2mm apart without the need for coating.
PhaseCam: vibration-immune Twyman-Green interferometer with high power for measuring large optics and systems, and for long measurement paths. Its super-fast single-frame data acquisition enables measurement despite vibration and turbulence
IR Systems: Measure at wavelength with our PhaseCam and AccuFiz IR systems. NIR – SWIR – MWIR – LWIR
NanoCam HD: a small, non-contact optical profiler for vibration-immune roughness measurement in challenging conditions

SPIE Optics + Photonics 2026
2026-08-25 - 2026-08-27 | San Diego Convention Center, 111 W Harbor Dr., San Diego, CA, 92101, United States
Join us in booth #620 at SPIE Optics + Photonics in San Diego, CA, from August 25-27, 2026 to learn about our latest optical metrology technologies, including:

AccuFiz Fizeau interferometers: Compact, high-performance Fizeau interferometers for shop-wide optics measurement at visible to SWIR wavelengths.
AccuFiz D and Duo interferometers: short coherence Fizeau interferometers for measuring thin, transparent, plane-parallel surfaces < 0.2mm apart without the need for coating.
PhaseCam: vibration-immune Twyman-Green interferometer with high power for measuring large optics and systems, and for long measurement paths. Its super-fast single-frame data acquisition enables measurement despite vibration and turbulence
IR Systems: Measure at wavelength with our PhaseCam and AccuFiz IR systems. NIR – SWIR – MWIR – LWIR
NanoCam HD: a small, non-contact optical profiler for vibration-immune roughness measurement in challenging conditions

IMTS 2026
2026-09-14 - 2026-09-19 | McCormick Place, 2301 S Lake Shore Dr, Chicago, IL, United States
Join 4D Technology in Chicago, Illinois, September 14-19, 2026!
Booth #134480
Come see 4D Technology’s latest innovations in handheld and automated 3D optical surface inspection systems

4D InSpec – a handheld, 3D surface gauge to quantify features and defects from 0.1 – 100mils deep instantaneously, with a measurement area of 0.3in x 0.3in.
4D InSpec XL – a 3D surface defect gauge with an expanded measurement area – 0.6in x 0.6in.
4Di InSpec SR – the industry’s first portable, nm-level resolution surface roughness system for precision machined surfaces, enabling high-resolution 3D (aerial) roughness on large and small samples, right on the floor or in the field.
4Di InSpec AMS – a fully automated 3D, optical inspection system with a collaborative robot to measure features such as chamfer, radius, and edge break, and defects such as pits, dings, corrosion and scratches.

MRO Asia-Pacific 2026
2026-09-23 - 2026-09-24
Join us in booth: Hall 3-5 | 313 in Singapore to learn about our latest optical, 3D portable and automated innovations in defect, geometry, and surface roughness measurement technologies.
Learn how you can reduce scrap & rework and improve labor utilization & turn-around times with our industrial portfolio for aviation & aerospace engine manufacturing and MRO.
Learn more about our 3D area, snapshot surface gauges for MRO, including:

4D InSpec – a handheld, 3D surface gauge to quantify features and defects from 0.1 – 100mils deep.
4D InSpec XL – a 3D surface defect gauge with an expanded measurement area – 0.6in x 0.6in.
4Di InSpec SR – the industry’s first portable, nm-level resolution surface roughness system for precision machined surfaces, enabling high-resolution 3D (aerial) roughness on large and small samples, right on the floor or in the field.
4Di InSpec AMS – a fully automated 3D, optical inspection system with a collaborative robot to measure features such as chamfer, radius, and edge break, and defects such as pits, dings, corrosion and scratches.

MRO Europe 2026
2026-10-28 - 2026-10-29
Join us in booth #7-2000 in Amsterdam, the Netherlands, October 28-29, 2026 to learn about our latest optical, non-contact, and portable innovations in defect, geometry, and surface roughness measurement technologies.
Learn how you can reduce scrap & rework and improve labor utilization & turn-around times with our industrial portfolio for aviation & aerospace engine manufacturing and MRO.
We will be showcasing our 3D area, snapshot surface gauges for MRO, including:

4D InSpec – a handheld, 3D surface gauge to quantify features and defects from 0.1 – 100mils deep instantaneously, with a measurement area of 0.3in x 0.3in.
4D InSpec XL – a 3D surface defect gauge with an expanded measurement area – 0.6in x 0.6in.
4Di InSpec SR – the industry’s first portable, nm-level resolution surface roughness system for precision machined surfaces, enabling high-resolution 3D (aerial) roughness on large and small samples, right on the floor or in the field.
4Di InSpec AMS – a fully automated 3D, optical inspection system with a collaborative robot to measure features such as chamfer, radius, and edge break, and defects such as pits, dings, corrosion and scratches.
