Keypad light guide with lined apertures
US7677743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2006 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Jan 26, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D11/00663
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An exemplary process for making a light guide includes the steps of: providing a transparent base sheet; punching the base sheet to form an array of first apertures therein; coating a melted resin material in the first apertures and making the melted resin material fill up the first apertures; solidifying the melted resin material to form a plurality of resin blocks; punching the base sheet to form an array of second apertures in the resin blocks, the second apertures configured for illuminating the keys via at least one light source; and trimming the base sheet with the second apertures to form a light guide. A light guide made by the process is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.