Sapphire + Infrared Focus
Dedicated support for precision sapphire, infrared optical components and imaging assemblies from design review through dependable production.
About COE Sapphire
Precision Optics.
Trusted Manufacturing.
Since 2009.
Custom sapphire and infrared optical components and assemblies, supported by practical engineering and controlled manufacturing.
Our Company
Precision Optical Solutions Since 2009
COE SAPPHIRE is a subsidiary of BOTE OPTICS GROUP, serving customers with precision sapphire, infrared optical components and imaging assemblies.
China + Singapore Manufacturing
Manufacturing operations in China and Singapore support optical fabrication, precision polishing, coating, lens assembly, inspection and optical metrology.
Quality Commitment
Controlled manufacturing, inspection and documentation are aligned with customer and program requirements.
Long-Term Partnership
Prototype, pilot and repeat-production support for long-term programs and supply relationships.
Manufacturing Excellence
Manufacturing Built Around the Application
Our role is to connect material selection, practical engineering and controlled production around the needs of each optical application.
Detailed processes, equipment and individual capabilities are presented on our Manufacturing Capabilities page.
Explore Manufacturing CapabilitiesWhy COE
Why Engineers Choose COE Sapphire
Optical manufacturing experience, broad material capability and practical support from design review through reliable production.
Engineering-First Design Support
We review application requirements, materials, tolerances and coatings before quotation to improve manufacturability and avoid unnecessary cost.
Broad Optical Material Capability
Our manufacturing capabilities support sapphire, optical glass, fluoride crystals and infrared materials across UV, visible and IR applications.
Prototype to Production
Support for early prototypes, engineering samples, pilot quantities and repeat production with consistent process control.
Precision Manufacturing
Controlled machining, grinding, polishing, centering, coating and inspection for demanding custom optical components.
Inspection and Documentation
Dimensional, interferometric, cosmetic and coating inspection with documentation tailored to customer and program requirements.
Responsive Engineering Communication
Clear technical communication, practical recommendations and direct support throughout quotation, development and production.
The COE Approach
The right precision.
The right material.
The right manufacturing solution.
We focus on the specification your application actually needs—not simply the highest specification available.
Talk with an Optical Engineer
Quality You Can Trust
ISO 9001:2015 Certified
Quality management and controlled manufacturing processes support consistent optical production and customer requirements.
- In-process inspection
- Dimensional and optical metrology
- Documentation aligned to program requirements
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Looking for a Long-Term Optical Manufacturing Partner?
Talk with our team about your application, material and production requirements.