Lens device
US7419315B2 · kind B2 · utility
74Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2006 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Mar 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a lens device, plastic lenses having circular outer periphery are placed in a plastic lens-barrel having an octagonal or more complex polygonal inner surface in such a way that the outer peripheral surfaces of the lenses are press contacted to the inner surface of the polygonal shape. This lens device has press contact portions that are pressed by the lens outer peripheral surface and the lens-barrel inner surface in the vicinity and in both sides of gate traces where optical axis displacement is large so as to suppress the displacement of the gate trace by the press contact portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.