Plastic injection of lenses with optical elements and/or retroreflecting prisms that are separated from each other
US7722196B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2007 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Oct 29, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0016
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A moulding process to manufacture a moulded piece having multiple individual optical elements with the same or different dimensions. This is achieved by using a multicolour injection process as well as a multidrop injection manifold. In the first step, the optical elements are moulded without any junction between them. In the second step, a layer of plastic is moulded in order to join together all the optical elements to create a single piece. The moulded piece thus consists of two plastic injections with optical elements which is more easily adaptable to a variety of different designs for lights having two or more colors. New styles of optical elements, along with varied and original geometric arrangements can thus be imagined. Furthermore, signaling functions having by their regulations different colors can heretofore be placed within a same zone of glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.