Flexible Size and Thickness
Ultra-thin sheets and thicker high-rigidity blanks can be evaluated for compact sensors, optical instruments, and industrial assemblies.
Square Custom Sapphire Optical Blank
- Model
- FG-SAPP-SIGHT-HP-001
Item specifics
- Base Material
- Optical Grade Single Crystal Sapphire (C-Plane Standard, Other Orientations Available)
- Shape & Outline
- Standard Square, Rectangular, Custom Irregular Profile Supported
- Thickness Range
- 0.1 mm – 60 mm, Custom Ultra-Thin / Heavy Thickness Available
- Surface Finish
- As-Cut Blank, Single/Double-Sided Optical Polishing, Optional AR Coating
- Edge Processing
- Raw Cut, Safety Chamfer, Countersink, Slot, Notch, CNC Profiling
- Application Field
- Precision Instruments, Machine Vision, LiDAR, Semiconductor Inspection, Custom Optical Assemblies
- Custom Machining Service
- OEM ODM Size Cutting, Drilling, Laser Marking, Silk-Screen Printing
Review
Description
Felix Glass Co., Limited supplies square and rectangular optical-grade single-crystal sapphire blanks for drawing-based optical and industrial assemblies. Parts can be delivered as-cut, single-side polished, or double-side polished, with custom thickness, edge work, holes, slots, notches, marking, and optional anti-reflection coating reviewed against the customer drawing. For finished observation-window formats, compare the high-pressure resistant sapphire sight glass. The broader Sapphire Optical Windows category covers additional window configurations. The values below retain the available customization directions in the existing product information. The purchase drawing should define the acceptance criteria used for production and inspection. Choose an as-cut blank for customer processing or a factory-polished surface to reduce downstream preparation steps. Sapphire provides strong scratch resistance and chemical stability for exposed optical surfaces and repeated handling. Flatness, parallelism, surface quality, and clear aperture can be coordinated with the intended optical path. Chamfers, holes, slots, notches, profiling, laser marking, and border printing can be reviewed before delivery. When reflection control is part of the design, review the AR-coated sapphire protection window as a related configuration. Cut square, rectangular, or irregular blanks with process allowance planned for the finished geometry. Use diamond-tool CNC processing for outlines, holes, slots, notches, chamfers, and countersinks. Apply single-side or double-side polishing around the required flatness, parallelism, and surface quality. Evaluate laser marking, silk-screen printing, and optional AR coating for the assembly and optical requirement. For a thinner finished part, compare the ultra-thin polished sapphire glass cover. Custom sapphire plates for optical measurement, encoder, microscope, and laboratory assemblies. Durable blanks for imaging and ranging windows where outline and optical geometry are drawing controlled. Hard, chemically stable optical access parts for inspection modules and process equipment. Blanks intended for engineered sight-window assemblies after pressure, temperature, sealing, and housing review. Small optical windows for sensing and inspection equipment with application-specific documentation needs. A related medical-device format is the custom C-plane sapphire flat window. Company and manufacturing background is available on the About Felix Glass page. Yes. As-cut blanks can be supplied for customer secondary processing. Single-side and double-side polishing are also available. Square, rectangular, and drawing-defined irregular profiles can be evaluated with holes, slots, notches, chamfers, and countersinks. Broadband AR coating can be reviewed. Provide the wavelength range, angle of incidence, coated side, and performance target. It can be evaluated as the sapphire optical element, but allowable pressure is determined by the finished thickness, clear aperture, edge support, seal, housing, temperature, safety factor, and applicable design requirements. No pressure rating should be assumed without assembly-level engineering review. Provide a drawing, dimensions, thickness, quantity, crystal orientation, surface quality, flatness, feature tolerances, coating, and operating conditions. Prototype and production quantities can be discussed after the engineering requirements and inspection plan are defined. Felix Glass Co., Limited supports drawing-based sapphire cutting, CNC machining, optical polishing, marking, coating, inspection, and packaging for US-market and global B2B projects. Send the drawing, quantity, thickness, tolerance, surface requirement, coating target, and operating conditions for a feasibility review and project-specific quotation.
Attention
Product Overview
Direct answer: Available directions include C-plane sapphire as the standard orientation, thickness from 0.1 mm to 60 mm, square sizes up to 400 mm × 400 mm, flatness options from λ/4 to λ/10 depending on polishing grade, and custom CNC features. Final tolerances depend on size, thickness, geometry, coating, inspection method, and service conditions.
Interest
Core Technical Specification Table
Parameter Available Direction Engineering Review Note Base material Optical-grade single-crystal sapphire; C-plane standard Other crystal orientations can be reviewed. Shape and outline Square, rectangular, or drawing-defined irregular profile Provide corner radius, datum, and outline tolerance. Thickness range 0.1 mm to 60 mm Feasibility depends on part size, handling, and machining features. Surface finish As-cut, single-side polished, or double-side polished State surface quality, roughness, flatness, and clear aperture. Flatness option λ/4 to λ/10 based on polishing grade Specify test wavelength and measurement aperture. Maximum square size Up to 400 mm × 400 mm Confirm thickness, usable area, packaging, and transport needs. Optional coating Broadband anti-reflection coating Provide wavelength, angle of incidence, coated side, and target. Edge processing Chamfer, countersink, slot, notch, or CNC profiling Include feature locations and position tolerances. 
Interest
Core Technical Advantages
Multiple Surface Supply Modes
Mohs 9 Hardness
Controlled Optical Geometry
Pre-Machining Options
Interest
Full Custom CNC Machining Capacity
Blank Preparation
Precision Profiling
Optical Finishing
Marking and Coating
Desire
Wide Cross-Industry Application Scenarios
Precision Instruments
Machine Vision and LiDAR
Semiconductor Inspection
Industrial Observation
Medical and Laboratory Devices
Desire
Production & Quality Inspection Standards
Prototype and production quantities can be discussed. Lead time is confirmed after the drawing, quantity, coating, and inspection scope are reviewed.
Desire
Frequently Asked Questions
Can the sapphire blank be supplied without optical polishing?
What shapes can be reviewed?
Is anti-reflection coating available?
Can this blank be used in a pressure sight-window assembly?
What information is needed for a quotation?
Can Felix Glass support prototype quantities?
Desire
Drawing Information for Engineering Review
Action
Engineering Support & Inquiry Guide
