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Precision-engineered telecentric lens solutions purpose-built for gemstone inspection, crystal clarity grading, and high-accuracy jewelry measurement systems.
Crystal Grading
11mm Sensor Telecentric Lens for Crystal & Jewelry Inspection
Bi-Telecentric
44mm Bi-Telecentric Lens — High Precision Jewelry Measurement Imaging
Gemstone Grading
MT Series 1.1" Telecentric Lens — High Precision Gemstone & Crystal Measurement
2D AOI
Telecentric Lens for 2D AOI — Jewelry Surface Defect Optical Inspection
Traditional optics introduce perspective errors and magnification shifts that make precise gemstone measurement unreliable. Telecentric design eliminates these flaws entirely.
Telecentric lenses maintain a constant magnification regardless of object depth, ensuring that every facet, inclusion, and edge of a gemstone is measured with sub-micron accuracy — a critical requirement for diamond and colored-stone grading.
Unlike conventional microscopes, telecentric optics project light rays in perfect parallel, enabling true 2D and 3D dimensional measurement of carat weight, girdle thickness, and table percentage without geometric error.
High-resolution telecentric imaging captures internal crystal structures, inclusions, and surface blemishes with exceptional contrast — supporting internationally recognized grading standards such as GIA, IGI, and HRD.
Integrated with AI-powered machine vision systems, telecentric microscopes enable automated jewelry grading lines capable of inspecting hundreds of stones per hour, dramatically reducing labor costs and human error.
Canrill telecentric lenses feature standardized C-mount and F-mount interfaces, compatible with leading industrial cameras and software platforms for rapid deployment in existing grading and inspection lines.
ISO 9001 certified manufacturing and RoHS compliance ensure that every lens meets the strictest international quality and environmental standards required by luxury jewelry brands and certified gemological labs worldwide.
Telecentric microscopy has become the definitive optical technology for professional crystal and jewelry grading — delivering measurement repeatability of ±1 µm, enabling grading labs, luxury retailers, and automated sorting facilities to achieve a new benchmark in quality assurance, traceability, and consumer trust.
The global gem and jewelry market exceeded USD 340 billion in 2024, with automated optical grading technologies emerging as a key differentiator for quality-driven enterprises.
The adoption of machine-vision-based grading systems is accelerating across diamond sorting facilities in Botswana and India, colored gemstone treatment labs in Thailand and Sri Lanka, and luxury jewelry QC departments in Switzerland, Italy, and Japan. Telecentric microscopes — with their unmatched geometric fidelity — are at the core of this transformation.
From rough diamond sorting to finished luxury piece inspection, telecentric microscopes serve critical roles across the entire gem and jewelry value chain.
Telecentric imaging systems measure table percentage, crown angle, pavilion depth, and girdle thickness with laboratory-grade precision, automating the GIA cut grading process for Excellent, Very Good, and Good classifications with consistent, repeatable results.
High-magnification telecentric lenses reveal internal crystal structures, fractures, and inclusions in rubies, sapphires, and emeralds, enabling clarity grading documentation compliant with GRS, Gübelin, and SSEF laboratory standards.
In the growing synthetic diamond and lab-grown gemstone sector, telecentric microscopes inspect CVD and HPHT crystal growth uniformity, surface polish quality, and internal strain patterns critical to both optical performance and certification.
Automated telecentric vision systems verify prong height uniformity, bezel setting concentricity, and pavé stone alignment in finished jewelry pieces — a quality control step increasingly mandated by luxury brands to prevent field returns and warranty claims.
Before cutting, telecentric scanning systems create precise 3D models of rough diamonds, enabling AI-powered planning software to calculate optimal cut yield — maximizing carat weight recovery while meeting target quality grades.
Bi-telecentric lens systems inspect laser-engraved girdle inscriptions and hallmarks on gold, platinum, and silver jewelry with micron-level resolution, supporting anti-counterfeiting, provenance tracking, and regulatory compliance workflows.
As the jewelry industry embraces digital transformation, telecentric microscopy is evolving rapidly — integrating with AI, blockchain, and hyperspectral imaging to define the next generation of gem grading.
The convergence of telecentric optics and deep learning algorithms is enabling fully automated grading systems that match or exceed human expert accuracy. AI models trained on millions of telecentric images can classify diamond clarity, color, and cut grade in under 200 milliseconds, transforming high-volume sorting operations.
Next-generation telecentric systems are incorporating hyperspectral imaging to detect gemstone treatments, synthetic origins, and color enhancements invisible to standard RGB cameras — providing a new layer of authentication data for certification laboratories.
Telecentric measurement data is increasingly being linked to immutable blockchain-based digital certificates, enabling end-to-end provenance tracking from mine to retail counter. This trend is driven by consumer demand for ethical sourcing transparency and regulatory frameworks like the Kimberley Process 2.0.
Miniaturization advances are producing portable telecentric grading devices for use at trade shows, retail counters, and field gemology. These compact systems deliver laboratory-grade measurement capability in handheld form factors, democratizing access to precision optical grading.
Telecentric grading systems are evolving into cloud-connected platforms where measurement data, grading reports, and quality analytics are stored, shared, and benchmarked in real time — enabling multi-site jewelry manufacturers to maintain consistent quality standards across global production facilities.
The explosive growth of the lab-grown diamond sector — projected to exceed USD 50 billion by 2030 — is driving unprecedented demand for telecentric grading systems capable of distinguishing natural from synthetic stones and grading CVD/HPHT crystals with the same rigor applied to mined diamonds.
Canrill Optics, established in 2009, is the first company in China to focus exclusively on the manufacturing and marketing of telecentric lenses and telecentric lens design. We are the only manufacturer in the world to build a complete supply chain with our own mechanical factory and optical factory dedicated to industrial lens production.
Over the years, as a custom lens manufacturer, Canrill lenses have been upgraded through four generations of advanced technology and performance, earning the trust of clients worldwide. We have successfully partnered with world-famous brands including Samsung, Apple, LG, Huawei, Han's Laser, and TSMC.
Our objective is to produce top-level lenses and become one of the leaders in global telecentric technology — delivering precision optical solutions for crystal and jewelry grading, semiconductor inspection, and precision measurement across industries.
Since founding Canrill in 2009, Simon has been focused on building the world's leading manufacturer of telecentric lenses. Under Simon's leadership, Canrill has grown into a 100+ person company renowned in both China and overseas markets.
Senior optical designer with 10+ years of experience in the design and inspection of telecentric lenses and lighting systems for industrial and gemological applications.
15+ years of experience in mechanical design for precision optical instruments, ensuring that every Canrill telecentric lens housing meets the highest standards of dimensional stability and durability.
Canrill Optics holds internationally recognized certifications, affirming our commitment to quality, safety, and environmental responsibility in every telecentric lens we manufacture.
Canrill ISO 9001
Lens Cone RoHS Certificate 1
Lens Cone RoHS Certificate 2
Lens Cone RoHS Certificate 3
Lens Cone RoHS Certificate
Explore our full range of telecentric lens products — precision-engineered for gemstone measurement, crystal inspection, and jewelry quality assurance applications.
Crystal Grading
11mm Sensor Telecentric Lens — Crystal & Jewelry Grading Optics
Bi-Telecentric
44mm Bi-Telecentric Lens — High Precision Jewelry Measurement Imaging Solutions
Gemstone Grading
MT Series 1.1" Telecentric Lens — Precision Gemstone & Crystal Measurement
2D AOI
Telecentric Lens for 2D AOI — Jewelry Surface Defect Inspection Solutions
High Resolution
35mm Telecentric Lens — High-Resolution Crystal Imaging, 0.988X to 0.0929X Magnification
Low Magnification
35mm Sensor Telecentric Lens — Low Magnification Bi-Telecentric for Jewelry Grading
Precision Inspection
23mm Sensor Telecentric Lens — High Precision Crystal & Jewelry Inspection Solutions
Instant Measurement
16.2mm Bi-Telecentric Lens — High Brightness Instant Measurement for Jewelry Grading
Connect with Canrill Optics to discover how our telecentric lens solutions can transform your gemological inspection, automated grading, and quality assurance workflows.
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