Optical film having a set of diffractive features randomly repeating at variable distances
US7852570B2 · kind B2 · utility
3Cited by
63References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2009 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | May 6, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24479
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with at least one machined tool tip and possibly other tool tips. The actuator provides for control of the movement of the tool tip in an x-direction into and out of the work piece in order to make continuous or discontinuous diffractive features in it. The machined work piece can be used to make articles having diffractive features such as optical films having lenslets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.