SINGLE POINT DIAMOND TURNING (SPDT) https://www.opticsindia.com/product/spdt/
ď‚ Single Point Diamond Turning (SPDT) is an Ultra-precision Machining Process, which delivers surfaces with Form Tolerances within Sub-Micron Accuracies & Roughness within few Nanometers
How SPDT is achieved? ď‚ SPDT Process is a Near Ideal Marriage of: Interaction of Precision Diamond Tool, Controlled Lathe Operation, Deterministic Precision Material Removal, Strict Machining Protocols, Meticulous Surface Characterization
Why SPDT is Required? To Deliver Systems with Budgets on Weight, Volume & Foot-Print. For Neo-Compact Precision Modules. To Deliver Surface Quality: Sub-Micron Form & Figure Error and Single Digit Nanometric Finish. SPDT Deliverables & Profiles Surfaces with Profiles: Flats Rotationally Symmetric Profiles (Spherical, Oblong & Prolate Ellipsoids, Parabolic, Hyperboloids) Off-Axial Components Torics (with Fast & Slow Tool Servo Accessory) Lenslet Arrays
Materials, Measurement & Accuracies SPDT Processable Materials Metals: Aluminum & Alloys, Brass, Bronze, Copper & Alloys, Nickel & Electroless Nickel, Tin, Antimonoy, Silver, All NonFerrous Metals, Low-Carbon Steels & Special High HRC Steels. Crystals & Glasses: Germanium, Silicon, CaF2, ZnS, ZnSe, GASIR, Chalcogenide Glasses, AMTIR, HgCdTe, InSb Polymers: PMMA, Zeonex, PolyCarbonate, PolyStyrene, ULTEM SPDT Surfaces Measurement Dimensional Metrology: Coordinate Metrology Machine: Accuracy up to 0.9 μm Height Gauges, Thickness monitors, Micro Meters etc. Surface Metrology: Spherical Profiles: Phase Shift interferometer (upto 150 mm Dia) Aspheric Profiles: Contact Profilometer (upto 200 mm Dia) Measurable Parameters: Form – Figure (Sub-μm) – Finish (nm)
SPDT APPLICATIONS Bio Metrics CD Player Optics Hi – Precision Modules Intra Ocular Lenses Low Vision Aids Cell Phone Optics Mould Inserts Orthopedic Joints Progressive Lenses Space Cameras Space Optics Forensics Security Systems Space Telescopes Virtual Reality Systems Zoom Camera Optics
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