Test & Measurement

Develops integrated imaging solutions to enable automated visual inspection and measurement of light, color, and surfaces. Scientific-grade imaging colorimeters are used for production-quality inspection and R&D testing of displays, backlit components, LEDs, and other light sources, as well as overall manufacturing integrity.

Specializes in the design and manufacture of advanced optical metrology instruments and systems, ultraprecise optical components and assemblies, and providing electro-optical design and manufacturing services.

Yelo designs and builds burn-in, life-test and characterization systems for probed devices such as VCSEL arrays, laser arrays, APDs, chip-on carrier devices including photonics integrated circuits (lasers, amplifiers, modulators, photodiodes, thermistors), SOAs, laser arrays, PIN photodiodes, VCSEL TO headers, miniDILs, and butterfly packages.

Manufacturer of polarization maintaining fiber optic couplers, WDMs, pump couplers, polarization splitters, interferometers, and noncontact displacement sensors.

Manufacturer of laser-quality precision optical assemblies and components (VUV to IR) including prisms, mirrors, windows, retroreflectors, filters, plate-type beamsplitters, alignment cubes, polarizing and nonpolarizing cube beamsplitters, and coatings. ISO 9001:2015 certified.

More than 25 years of experience in designing and manufacturing high precision motion stages up to providing turnkey system solutions for the semiconductor, 3D printing, and laser micromachining industries. Offers a number of optimized positioning systems, for example of granite or CFC, for maximum precision and dynamics.

Supplier of avalanche photodiodes and modules (Si, InGaAs), IR detectors (InGaAs, PbS, PbSe, pyroelectric), photon counting modules, laser diodes and modules (different wavelengths and power), pulsed laser diodes (905 and 1550 nm), laser diode drivers, laser optics, spatial light modulators, polarizers, UV LEDs and glass filters.

Supplier of high-performance scientific IR cameras and hyperspectral imagers for the defense, industrial, and academic research industries. Also offers R&D services for optical system technology development.