Ultra Precision Manufacturing
We have adopted the latest technologies in ultra precision manufacturing. We provide prototype making and batch or mass production for plastic lenses
Product detail table
| MANUFACTURING OF ... | SIZE OF LENS (reference only) | ACCURACY (form error) |
|---|---|---|
| Plastic Lens Prototype (By Single Point Diamond Turning) | Max diameter to 200mm | Machined plastic lens: 300nm |
* subject to lens profile
Manufacturing of Plastic Lenses
Single Point Diamond Turning (SPDT) and Machining Technology
This technology is used for plastic lens prototype making and precision injection mould making.
Precision Injection Moulding Technology
This technology is used for batch or pilot production.
Single Point Diamond Turning (SPDT) and Machining Technology
Precitech
- Nanoform Ultra 250
- Freeform 204
- Nanoform 2000
- Optimum 2400
Single Point Diamond Machining (SPDM) is a material removal process in which a single-crystal natural diamond cutting tool is used to generate surface on a non-ferrous substrate to have submicron dimensional tolerances.
The superior surface finish and form accuracy of ultra-precision diamond turning allow the technology to be widely adopted for the manufacturing of a variety of precision mechanical and optical parts.
Ultra precision machining based on single point diamond turning is a machining process making use of a monocrystal diamond cutting tool which possesses nanometric edge sharpness, form reproducibility and wear resistance.
Applications
- plastic lens prototype fabrication for lens design evaluation
- ultra-precision machining of lens mould inserts
- mirror surface generation on non-ferrous materials
- electroless nickel-plating steel inserts
Specification
- Maximum swing capacity of diameter 200mm
- Resolution of machine to be 10nm
- Attainable surface roughness of workpiece under 10nm
- Form error for NiCu inserts is less than 200nm and less than 400nm for plastic lens prototype
Advantages
- Surface roughness is in the nanometer range
- Non-ferrous work materials can be directly machined to optical quality without the need for subsequent post-polishing
Single Point Diamond Turning
4-Axis Freeform Machining
Diamond Grinding
Micro Grooving
For requirements of different applications, SPDT can perform different operations include:
SPDT detail table
| Operations | Application / Product |
|---|---|
| Ultra Precision Turning | Camera lens, CCD lens, etc (Max diameter of final lens is 200mm) |
| Free Form Milling | Cylindrical asphere, etc (Surface roughness of the machined workpiece is 60-70nm) |
| Micro-grooving machining | Front light guide, etc |
| Ultra-precision grinding | Carbide mould for glass moulding in fibre optics, digital camera, etc (Form error accuracy and roughness of carbide mould (for glass lens) is up to 100nm and 10nm) |
| Diffractive optics manufacturing | Fresnel lens, CCD lens, etc |
HKPC is the available technology service bureau to provide free form diamond milling, micro-grooving machining and diffractive optics manufacturing services in Hong Kong and PRC China.
Precision Injection Moulding Technology
Battenfeld
- Micro Melt System
- Micro System 50
Bring together the precision mould insert making technology by SPDT and our well-developed plastic injection technique, we are able to produce high accuracy aspheric / spheric plastic lens. Precision injection moulding of plastic lens improves consistency, repeatability & efficiency
- Our injection moulding machines are from 25 tons to 100 tons.
- Our machines are well equipped with robotic arms and accessories.
Product Samples:
View Finder
Photo Taking Lens
Projector Lens
Viewer
Optical Fiber Coupler
