✔ OEM / ODM Customization
✔ Free Drawing DFM Technical Review
✔ 24-Hour Professional Quotation
✔ Flexible Low MOQ & Fast Prototypes
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| Categories | Sapphire Optical Windows |
| Brand | FELIX GLASS optical glass Manufacturing base |
| Model | FG-SAPP-COVER-THIN-001 |
| Base Material | Optical Grade Single Crystal Sapphire (C-Plane Standard, Other Crystal Orientations Available) |
| Thickness Range | Standard 0.1–2 mm, Custom Ultra-Thin / Thick Thickness Supported |
| Surface Finish | Double-Sided Optical Mirror Polishing, Custom Surface Roughness Tolerance |
| Core Advantages | Mohs 9 Hardness, Ultra Flatness, Full UV-Vis-NIR Transmittance, Chemical Inertness |
| Available Shapes | Round / Square / Rectangle / Irregular Outline With Custom Cutouts |
| Application Field | Precision Instrument, LiDAR, Machine Vision, Aerospace, Industrial Automation Sensors |
| Custom Machining | Cutting, Drilling, Chamfering, CNC Profiling, Slots, Notches, Countersinks, Laser Marking, Optional |
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Ultra-thin polished sapphire cover glass is used when a compact optical system needs a thin protective surface without giving up the hardness and environmental stability of single-crystal sapphire. Felix Glass Co., Limited manufactures this product from optical-grade sapphire for precision sensors, machine vision, LiDAR, aerospace-related assemblies, and laboratory instruments.
For adjacent formats and thicker protective parts, review the Sapphire Optical Windows category.
These values describe available customization directions. Final tolerances, inspection methods, and acceptance criteria should be confirmed on the approved drawing.
| Parameter | Typical Customizable Value | Drawing Review Note |
|---|---|---|
| Base material | Optical-grade single-crystal sapphire, C-plane standard | Other crystal orientations can be reviewed. |
| Standard thickness | 0.1 mm to 2 mm | Custom ultra-thin or thicker versions depend on size and handling needs. |
| Surface finish | Double-sided mirror optical polishing | State surface roughness and scratch-dig requirements on the drawing. |
| Surface flatness | λ/4, λ/8, or λ/10 options | Specify test wavelength, clear aperture, and inspection condition. |
| Parallelism | Target to ≤0.002 mm | Feasibility varies with thickness, size, and geometry. |
| Maximum single size | Up to 400 mm × 400 mm; round diameter up to 300 mm | Confirm usable area, thickness, and transport requirements. |
| Optional coating | Broadband anti-reflection coating | Provide wavelength, angle, side, and transmission target. |
| Edge processing | Chamfer, countersink, slot, notch, or laser marking | Include datum and position tolerances for machined features. |
Standard production covers 0.1 mm to 2 mm thin sheets. Extra-thin prototypes or thicker high-rigidity variants can be reviewed for special optical modules, with thickness uniformity considered to reduce light-path deviation.
Both surfaces receive mirror optical polishing for stable transmission through ultraviolet, visible, and near-infrared ranges, subject to material thickness and the final optical specification.
Sapphire resists abrasion from handling, dust, and assembly contact better than common optical glass, helping protect exposed sensor and instrument surfaces.
Precision lapping and polishing can be planned around imaging, ranging, and microscopic sensing requirements where surface deviation could affect the optical path.
Single-crystal sapphire provides chemical stability for equipment exposed to moisture, cleaning processes, laboratory conditions, and industrial environments.
For applications that also require a functional coating, compare the AR-coated sapphire protection window.
Straight cutting, through-hole drilling, and safety-edge chamfering for standard cover geometries.
CNC contour shaping, positioning slots, locating notches, and countersunk mounting holes for drawing-defined assemblies.
Permanent laser marking for part identification and optional border printing for light-shielding requirements.
Double-sided polishing, flatness control, optional coating, and inspection planning based on the purchasing specification.
Projects with unusual outlines or multiple machined features can also reference custom sapphire optical components.
Protective covers for compact sensors, encoders, microscopic detection equipment, and optical measurement assemblies.
Outer optical windows for ranging sensors and miniature cameras where surface durability and controlled optical access matter.
Protective plates for inspection modules operating near dust, mechanical contact, cleaning cycles, or factory contaminants.
Small optical sensing windows for portable equipment and laboratory instruments, with drawing-defined inspection requirements.
Compact optical shielding parts where low thickness, hardness, thermal stability, and custom geometry are evaluated together.
For a medical-device configuration, see the C-plane sapphire flat window for medical equipment. For higher-temperature sensor housings, review the sapphire optical window for high-temperature industrial sensors.
Ultra-thin sapphire cover glass is reviewed through four inspection stages before shipment. The final inspection plan can be matched to the order specification and reporting requirement.
The standard minimum is 0.1 mm. Extra-thin prototypes can be evaluated for R&D projects after the engineering team reviews the drawing, part size, and handling method.
Yes. Round, square, rectangular, and free-form outlines can be reviewed with custom cutouts, slots, notches, and mounting holes.
Broadband AR coating is optional. Please provide wavelength range, incidence angle, coated side, and transmission or reflection target.
Typical directions include thickness tolerance to ±0.005 mm for standard thin sheets, parallelism to ≤0.002 mm, and flatness options down to λ/10. Final values depend on geometry and the agreed inspection method.
Yes. Prototype and production quantities can be discussed after material, thickness, machining, coating, and inspection requirements are defined.
Company background and manufacturing information are available on the About Felix Glass page.
Felix Glass Co., Limited provides drawing-based sapphire cutting, CNC machining, optical polishing, coating, and inspection support for LiDAR, machine vision, aerospace-related, medical, laboratory, and precision-instrument projects.
Submit the drawing, quantity, thickness, tolerance, wavelength, coating, and application conditions for a feasibility review and project-specific quotation.
Send Your Sapphire Cover DrawingSend us your drawing, dimension & coating requirements for fast quotation within 24 hours.
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We 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 Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.
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.
What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.
All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.
Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.
