We have adopted the latest technologies in ultra precision manufacturing. We provide prototype making and batch or mass production for plastic lenses
|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
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 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.
For requirements of different applications, SPDT can perform different operations include:
|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.
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