Miniaturized lens assembly
US8576502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2012 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Jul 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/0045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A miniaturized lens assembly includes a first lens, a stop, a second lens, a third lens, a fourth lens and a fifth lens, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens is made of plastic material, is a meniscus lens with negative refractive power, and includes a convex surface facing the object side. The second lens is made of plastic material and is a biconvex lens with positive refractive power. The third lens is made of glass material and is a biconvex lens with positive refractive power. The fourth lens is made of glass material, is a biconcave lens with negative refractive power, and is adhered to the third lens to form a compound lens. The fifth lens is made of plastic material, is provided with positive refractive power, and includes an aspheric surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.