Testing Services
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Seattle-area optical metrology lab
AI-powered Optical Metrology for 2D and 3D Systems
Tough Measurement Challenges. We Take Them On
4 Ways We Can Help
Consulting
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Solutions
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Get a custom system
Products
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What We Measure
2D Optical Metrology
Precision 2D measurement for cameras, displays, and optical components — from lab characterization to in-line production testing
01
Camera Image Quality
Know exactly how sharp, clean and true-to-color your camera is before it ships
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02
Optical Calibration
Geometric and photometric calibration for your camera, delivered with a calibration report
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03
Display & Uniformity
Measure brightness and color variation across the whole panel, not just at the center point
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04
Spectrum & Optical Power
Measure spectral distribution, peak wavelength, and optical power in a single lab visit
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05
Lens Wavefront
Measure the wavefront aberrations of your lens directly, instead of inferring them from images
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06
Angle & Parallelism
Verify angles and parallelism on optical assemblies to arc-second-level resolution
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3D Optical Metrology
Precision 3D measurement for complex geometries — laser-line scanning, structured light, and OCT, from lab to production
01
Laser-line 3D Scanning
Capture precise surface profiles for dimensional checks and inline inspection
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02
Handheld 3D Scanning
Turn a physical part into a usable point cloud for inspection or reverse engineering
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03
Structured-Light 3D Scanning
Capture full-field 3D shapes in a single shot, including parts a single laser line cannot cover
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04
Custom 3D Solutions
A laser-line 3D measurement system integrated around your part and your line
05
Parcel Dimensioning
Parcel dimensions and volume from a structured-light device or an iPhone LiDAR app
06
OCT Interferometer
OCT-based 3D measurement of thickness and defects, for wafer, CPO packaging, TGV inspection
OPTICAL FIELD MAPLAB / PRODUCTION
Applications We Support
Imaging & Machine Vision
Camera and imaging-system testing for machine-vision lines, inspection cameras and product development
AR/VR & Near-Eye Displays
Display uniformity and image-quality measurement for headsets and near-eye optical systems
Industrial 3D Measurement
Laser-line and 3D scanning for dimensional inspection of parts, profiles and assemblies
Logistics Dimensioning
Automated parcel dimensioning for DIM-weight rating, sortation, and trailer load optimization
Semiconductor
Non-contact thickness and defect metrology
Consumer Electronics
Camera, display, and color metrology for smartphones and smart devices
Image, Display and Optical Measurement in 2D
Measurement services for cameras, displays, lenses and light sources — each run on instruments already in our lab
Camera Image Quality
Know exactly how sharp, clean and true-to-color your camera is before it ships
- Measures
- In-house MTF, color accuracy, uniformity, blemish, distortion, noise, flare, etc. — analyzed with our in-house software, benchmarked against Imatest
- Instruments
- ISO 12233 eSFR chart, Siemens star chart, dead-leaves texture chart, X-Rite ColorChecker, SpyderCHECKR and calibration targets
Optical Calibration
Geometric and photometric calibration for your camera, delivered with a calibration report
- Measures
- Camera geometric calibration and photometric calibration
- Instruments
- Calibration boards, color charts and reference probes supplied with certificates
Display & Uniformity
Measure brightness and color variation across the whole panel, not just at the center point
- Measures
- Display luminance, chromaticity and uniformity across the full image area
- Instruments
- Topcon UA-200 / UA-10 2D luminance and colorimeter
Spectrum & Optical Power
Measure spectral distribution, peak wavelength, and optical power in a single lab visit
- Measures
- Spectral distribution, peak wavelength and optical power
- Instruments
- Ocean Insight FLAME spectrometer; Thorlabs PM400 / PM200 power meters with probes supplied with certificates
Lens Wavefront
Measure the wavefront aberrations of your lens directly, instead of inferring them from images
- Measures
- Lens wavefront aberration and wavefront error maps
- Instruments
- Thorlabs Shack-Hartmann wavefront sensor (WFS series)
Angle & Parallelism
Verify angles and parallelism on optical assemblies to arc-second-level resolution
- Measures
- Angle and parallelism of optical components and assemblies
- Instruments
- Two autocollimators — Trioptics ACM 100-38 and Edmund Optics — plus a Trioptics alignment telescope
Profiles, Point Clouds and Geometry in 3D
Laser-line, handheld, structured-light, custom 3D scanning, OCT thickness product, and volume scanning devices
Laser-line 3D Scanning
Capture precise surface profiles for dimensional checks and inline inspection
- Measures
- Profile scanning, height and dimensional geometry, inline inspection data
- Instruments
- LMI Gocator, Micro-Epsilon scanCONTROL 2510-25 and scanCONTROL 2500-100
Handheld 3D Scanning
Turn a physical part into a usable point cloud for inspection or reverse engineering
- Measures
- Full-part 3D point clouds for dimensional review and reverse engineering
- Instruments
- FARO Freestyle3D Objects handheld scanner, calibration certificate on file
Structured-Light 3D Scanning
Capture full-field 3D shapes in a single shot, including parts a single laser line cannot cover
- Measures
- Full-field depth maps and 3D point clouds from projected infrared patterns
- Instruments
- Intel RealSense depth cameras (active infrared structured light)
04
Custom 3D Solutions
Get a laser-line 3D measurement system built by ARCU and integrated around your part and your line — calibration and 3D reconstruction run on our own algorithms
- Approach
- Solution integration projects, from optics and motion through to reconstruction software
- Platform
- Our in-house laser-line 3D build — laser head, camera and Zaber motion platform
05
Parcel Dimensioning
Two routes to parcel dimensions, both built by ARCU: a structured-light device and an iPhone LiDAR app — calibration and 3D reconstruction run on our own algorithms
- Measures
- Parcel length, width, height and calculated volume from a 3D scan
- Devices
- Structured-light device for fixed stations
- iPhone LiDAR app for measuring anywhere in the warehouse
06
OCT Interferometer
OCT-based 3D measurement of thickness and defects — for wafer inspection, CPO photonic packaging, TGV glass through-via inspection and similar applications
- Approach
- Non-contact thickness and defect measurement with our OCT thickness metrology product
- Platform
- Built by ARCU — our own OCT platform, with calibration and 3D reconstruction running on algorithms developed in-house
About ARCU
Who We Are
We are optics enthusiasts, driven by curiosity, a passion for engineering, and the challenge of solving difficult measurement problems
ARCU is a Seattle-area optical metrology company providing optical testing services, measurement consulting, and custom measurement systems. Our team brings together expertise and resources from across the global optics community, spanning the United States, Germany, Japan, France, China, and beyond
The name itself spells out what we stand for — A · Accuracy, R · Reputation, C · Cutting-edge, U · Ultimacy
What We Do
We help engineering teams measure and characterize cameras, displays, optical components, and 3D parts
When standard tools are not enough, we work with you to develop practical measurement approaches and custom systems tailored to your application
Testing Services · Consulting · Solutions · Products
How We Work
Every project starts with understanding your measurement challenge and what you need to learn from the results
We combine hands-on testing, optical engineering, and in-house software development to find practical approaches to real-world problems. If a measurement falls outside our current capabilities, we’ll help you identify a suitable specialist or integration partner
Reputation Matters
Our reputation is one of our most important assets. We believe it is earned through every measurement, every project, and every interaction
We value honesty over easy promises, engineering rigor over shortcuts, and long-term trust over short-term gains. We are straightforward about what we can do, what requires further validation, and how we can help
We want every client relationship to be one we are proud to stand behind
Let’s Talk
Have a measurement challenge? Tell us what you’re working on and what you need to measure
Let’s find the right approach together
Talk to ARCU
Tell us what you need to measure, or ask a question about a test, a consultation, or a custom system
The Lab Behind Every Measurement
The instruments behind our testing services, and the sponsored capabilities that extend what the lab can run
2D Measurement
Images, displays, spectrum and optical power
Topcon UA-200 / UA-10 2D luminance & colorimeter
2D luminance, chromaticity and uniformity measurement for displays and backlight modules
Thorlabs Shack-Hartmann wavefront sensor (WFS series)
Lens wavefront aberration measurement
Ocean Insight FLAME spectrometer
Spectrum, wavelength and light source characterization
Topcon UA-10WL camera
Standalone machine vision camera for 2D imaging
Thorlabs Kiralux scientific CMOS camera
Scientific CMOS camera for 2D image acquisition
Thorlabs PM400 / PM200 optical power meters
Optical power and energy measurement
Thorlabs S130C photodiode power sensor
Slim photodiode power sensor for PM series meters, with calibration certificate
X-Rite ColorChecker Classic
Large-format color reference target
Checkerboard calibration targets
Metal and large-format checkerboards
Optical lenses
Precision optical lenses, various types
Machine vision cameras
Additional cameras for test setups
3D Measurement
Profiles, point clouds and part geometry
ARCU OCT
Non-contact 3D thickness measurement
LMI Gocator laser-line scanner
Snapshot 3D scanning for inline inspection
Micro-Epsilon scanCONTROL 2510-25
Laser-line 3D profile scanning
Micro-Epsilon scanCONTROL 2500-100
Laser-line 3D profile scanning, wide range
FARO Freestyle3D Objects handheld scanner
Handheld structured-light 3D scanning
Intel RealSense depth cameras
Depth imaging for 3D solutions
Thorlabs EDU-MINT2 Michelson interferometer
White-light interferometry, OCT principle platform
Software
In-house algorithms behind the measurements
Camera Image Quality
MTF, color accuracy, uniformity, blemish, distortion, noise, flare, etc.
3D laser line scanning
Laser line calibration and 3D reconstruction
Parcel Dimensioning
Parcel length, width, height and volume measurement
Motion & Optomechanics
The stages and controls that move samples and optics precisely
Zaber precision motion stages
High-precision motorized positioning
Thorlabs Kinesis motion controllers (KDC101 ×2, KCH301 hub)
Motorized stage control
Motorized actuators
Motorized actuators for precision positioning
Optical rails
Rails for precision linear translation
Thorlabs optical breadboards
Optical path assembly platform
Thorlabs optical posts
Stainless steel optical posts
Thorlabs post holders
Post holders for optical posts
Thorlabs clamping forks
Clamping forks for securing posts to breadboards
Thorlabs cage systems / Adapters / Mounts / Apertures / etc.
Cage rods for cage system assemblies
Thorlabs lens tubes
Lens tubes for optical path assembly
Thorlabs cap screws & mounting hardware
Cap screws and mounting hardware
Manfrotto MVH502AH tripod
Fluid video head for camera mounting
Light Sources & Alignment
Lasers, interferometry and precision alignment instruments
ARCU fiber-coupled collimator
Custom fiber-coupled collimator
Trioptics ACM 100-38 autocollimator
Angle and parallelism measurement
Edmund Optics autocollimator
Angle and parallelism measurement
Trioptics alignment telescope
Optical axis alignment
Thorlabs 4-channel fiber-coupled laser source
Multi-wavelength fiber-coupled laser output
Z-LASER line lasers
Line-structured-light source for 3D scanning
Polarizers
Polarization control for optical setups
Shear plates
Collimation testing of laser beams
Our lab is equipped with instruments and software from
Sponsored Capability
Expand Our Measurement Capabilities Together
Have a measurement requirement beyond our current capabilities? Let's discuss a collaborative approach to developing the equipment and methods needed for your application
Talk to an EngineerHow Sponsorship Works
- You fund the instrument We agree on the instrument and the capability it adds, you fund the purchase
- Your name on the instrument Laser-engraved on the equipment itself, plus a showcase on this website, priority scheduling and a testing discount
- Your name on the reports Test reports from the sponsored capability carry your name
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What Do You Need to Measure?
We pair Seattle-area engineering collaboration with optical-system development, integration and production support. Send the problem, the sample and the decision the data needs to support