Reflective type telephoto lens and photographing apparatus including the same
US9151932B2 · kind B2 · utility
1Cited by
1References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Dec 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B17/0808
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reflective type telephoto lens and a photographing apparatus including the reflective type telephoto lens are provided. The reflective type telephoto lens includes: a first lens that receives an incident flux of light from an object side; a main mirror including a reflective unit that reflects light transmitted through the first lens toward the object side, and a transmission portion disposed on a center portion thereof; a sub-mirror group including a sub-mirror that reflects light from the main mirror toward an image side; and a focusing lens group that focuses the light reflected by the sub-mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.