Medical Imaging Optics
Protective windows for cameras, illumination paths and imaging modules where abrasion resistance and optical clarity are important.
✔ OEM / ODM Customization
✔ Free Drawing DFM Technical Review
✔ 24-Hour Professional Quotation
✔ Flexible Low MOQ & Fast Prototypes






A C-plane sapphire flat window is a single-crystal Al2O3 protective optic whose polished faces are oriented to the sapphire basal plane. It is selected for medical imaging, diagnostic sensors and optical instruments that require a hard, chemically stable window with drawing-defined optical performance. Felix Glass manufactures round, rectangular and custom-shaped windows from customer drawings, with project-specific thickness, clear aperture, edge finish, surface quality, flatness and anti-reflection coating. C-plane orientation identifies the relationship between the polished window faces and sapphire's crystal axis. For optical systems operating near normal incidence, this orientation can help engineers manage polarization and birefringence behavior while retaining sapphire's mechanical and chemical advantages. Final orientation, wavelength, angle of incidence and allowable wavefront error should be defined together. Felix Glass reviews these conditions before confirming the manufacturing and inspection plan. Typical customization ranges shown for reference. Actual specifications depend on material selection and engineering requirements. Protective windows for cameras, illumination paths and imaging modules where abrasion resistance and optical clarity are important. Optical interfaces for spectroscopy, fluorescence, monitoring and other sensor assemblies designed around a defined wavelength band. Durable windows for laboratory and point-of-care equipment exposed to frequent handling, cleaning or chemically demanding media. Coated sapphire windows for beam delivery or illumination channels after wavelength, power density and angle-of-incidence review. Wavelength, polarization, incidence angle, clear aperture and allowable reflection guide orientation and coating choices. Housing geometry, sealing method, pressure differential, edge profile and mounting clearance are considered together. Share the actual cleaning agents, cycle frequency and contact conditions so the material and coating can be evaluated. Confirm drawing, C-plane orientation, wavelength, environment, tolerance and quantity. Define blank preparation, CNC shaping, edge work, polishing, coating and inspection. Inspect sample dimensions, surface condition and agreed optical characteristics. Use the approved process and inspection criteria for repeat orders and batch supply. Inspection scope should match the device risk and drawing. Common deliverables include material and orientation confirmation, dimensional results, cosmetic inspection, flatness or transmitted wavefront data, spectral transmission and coating verification. It means the polished faces follow sapphire's basal (0001) plane. The orientation should be evaluated with the system wavelength, polarization and angle of incidence. Send the drawing, orientation requirement, dimensions, tolerances, clear aperture, wavelength, surface quality, flatness, coating, cleaning exposure and quantity. Yes. Holes, steps, chamfers, bevels and non-round profiles can be reviewed for manufacturability from the drawing. Yes. Provide the operating band, angle, polarization, environmental exposure and acceptable reflectance so the coating can be evaluated. Send your medical sapphire window drawing and operating conditions for a review of C-plane orientation, geometry, polishing, coating and inspection requirements.Custom C-Plane Sapphire Flat Window for Medical Equipment

Why Specify C-Plane Sapphire for a Medical Optical Window?

Drawing-Defined Optical and Mechanical Specifications
Material Optical-grade single-crystal sapphire (Al2O3) Crystal orientation C-plane (0001), with orientation tolerance reviewed by project Geometry Round, square, rectangular, stepped, drilled or drawing-defined Optical finish Double-side polished; surface quality and flatness specified by application Edge finish Fine ground, polished, chamfered, beveled or stepped Coating Custom AR or BBAR coating by wavelength, angle and environmental exposure Inspection Dimensions, orientation, cosmetics, flatness, transmission and coating checks as agreed 
Medical Equipment Applications
Medical Imaging Optics
Diagnostic Sensors
Analytical Instruments
Laser and Illumination Paths

Built Around the Medical Device Assembly
Optical-path review
Mechanical integration
Cleaning exposure
Custom Manufacturing and Inspection Workflow
Requirement Review
Process Planning
Prototype Evaluation
Controlled Production
Quality Evidence to Define Before Production

Engineering FAQ for C-Plane Medical Sapphire Windows
What does C-plane mean for a sapphire window?
What information is needed for a quotation?
Can the window include holes, steps or a custom edge?
Can an AR coating be optimized for a medical sensor?
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Get Free RFQWe supply Industrial Glass, Sapphire Optics, Optical Lenses/Prisms/Filters, Infrared IR Optics, Functional & Display Glass, N-BK7/H-K9L Optical Glass, supporting OEM mass production and laboratory custom prototypes. Flexible MOQ & free sample service available. Fill in the form to download full datasheets and get factory wholesale price within 24 hours.

FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.
Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.
A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.
All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.
Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.