Flexible optical filter storage system
US4938580A · kind A · utility
Inventor
Key dates
| Filing date | May 5, 1989 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | May 5, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C11/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A flexible optical filter storage system (10, 100) is provided for depolyment as sunglasses. Systems (10 and 100) include a flexible filter member (40) reversibly extendible from within a unitary housing (30). Flexible filter member (40) is a one-piece singular member being concurrently displaceable over and retractable from both lenses (24) of eyeglasses (20), or in an alternate embodiment, concurrently displaceable over both eyes of the user. The housing (30) contains a roller member (52) rotatably mounted therein for storage of the flexible filter member (40). Also provided within housing (30) is an extension/retraction assembly (50) coupled to roller member (52). In the alternate embodiment, storage system (100) includes bridge support assembly (170) hingedly coupled to housing (30) and extendible therefrom for supporting housing (30) above a user's nose. On opposing ends of housing (130) there is provided ear supports (142) pivotally coupled within an elongated recess (131) for storage of ear supports (142) therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.