HOW TO PROCESS

Application Process

In the optical and optoelectronic industry, Crownkyn provides diamond-based superhard material solutions for cutting, grinding, lapping, polishing, and surface engineering. Product selection and grit sizing are matched to optical material type, brittleness, and surface performance requirements to ensure low defect rates, high optical precision, and stable batch manufacturing for industrial users.

Cutting and Rough Machining

Cutting and rough machining of optical and optoelectronic materials require superhard abrasives with high sharpness and controlled fracture behavior to prevent chipping and subsurface damage. Monocrystalline Diamond Powder and Coated Diamond Powder are widely used in slicing and shaping brittle optical materials.

Blank cutting and slicing: 40/50 to 60/80 mesh for efficient separation with controlled edge damage

General cutting and shaping: 80/100 to 100/120 mesh for balanced cutting speed and edge quality

Brittle or crack-sensitive materials: Coated diamond grades to improve grain retention and reduce edge chipping

Typical applications: Optical glass, sapphire windows, fused silica components, infrared crystal blanks.

Precision Grinding and Shaping

Precision grinding and shaping of optical components mainly use Monocrystalline Diamond Powder for consistent, long-life grinding and Crushed Diamond Powder for higher stock removal during early shaping stages. This staged selection balances productivity with form accuracy and edge control.

Rough grinding: 80/100 to 120/140 mesh using crushed diamond for rapid material removal

Semi-finish grinding: 140/170 to 200/230 mesh using monocrystalline diamond for improved form accuracy

Profile and contour grinding: Monocrystalline diamond grades for stable geometry and reduced edge defects

Typical applications: Lenses, prisms, optical domes, laser crystal components.

Lapping and Polishing

Ultra-Fine Finishing and Surface Engineering

Pre-lapping: 15–30 μm for form correction and damage layer removal

Fine lapping: 6–14 μm to remove grinding marks

Final polishing: 1–3 μm or finer diamond abrasives for high-quality optical surfaces

Typical applications: Precision lenses, optical flats, waveguides, optoelectronic substrates.

Ultra-Fine Finishing and Surface Engineering

For high-end optical and optoelectronic components, advanced diamond solutions are used to minimize light scatter and subsurface damage. Polycrystalline Diamond Micron Powder enables scratch-free, ultra-smooth surfaces through self-sharpening micro-cutting, while Nano Diamond Powder is applied for atomic-scale roughness control.

Ultra-fine finishing: ≤1 μm, nano-scale, and polycrystalline diamond grades for ultra-smooth, low-scatter surfaces

Surface conditioning: Diamond micro-powder treatments to improve wear resistance and optical durability

Thermal management: Thermal Conductive Diamond used as heat spreaders or interface materials for
laser diodes, VCSEL arrays, and GaN RF devices, reducing junction temperature by 20–30% and improving output stability

Typical applications: EUV and high-end laser optics, silicon photonics wafers, glass interposers for advanced packaging, high-power optoelectronic devices.

Optical & Optoelectronic Application Overview

Manufacturing Area	Surface / Component Type	Crownkyn Product Solutions	Value to You
Optical Blanks & Windows	Flat and curved transmissive optics	Monocrystalline diamond, coated diamond	Reduce edge chipping by >50% during cutting and slicing, improving blank yield.
Precision Optical Components	Lenses, prisms, crystal optics	Monocrystalline diamond, crushed diamond	Achieve form accuracy < 1 μm with stable geometry for precision optics.
Ultra-Precision Optical Surfaces	Low-scatter, scratch-free optical surfaces	Polycrystalline diamond micron powder	Minimize surface scatter and achieve scratch-free optical finishes.
Optoelectronic Substrates	Sapphire, glass, compound substrates	Micron diamond slurry and paste	Achieve Ra < 2 nm surfaces for coating adhesion and device performance.
Thermal & High-Power Photonics	Laser diodes, VCSELs, GaN RF devices	Nano diamond, thermal conductive diamond	Lower junction temperature by 20–30% improving lifetime and output stability.

Crownkyn supports optical and optoelectronic manufacturers with application-driven diamond materials, helping you achieve superior surface quality, tighter tolerances, and reliable performance across precision optics and advanced photonic production lines.