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Reflecting telescope optical system, optical unit, and image pickup apparatus using the same
US9110286B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9110286-B2 |
| Application number | US-201313835204-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 15, 2013 |
| Priority date | Apr 5, 2012 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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A reflecting telescope optical system comprises, a main reflecting mirror, a sub reflecting mirror which is disposed at a position facing a reflecting surface of the main reflecting mirror, and a plurality of lens units which is disposed at a position facing a reflecting surface of the sub reflecting mirror. The reflecting surface of the main reflecting mirror is a concave surface, and a reflecting area is formed to be ring-shaped. The reflecting surface of the main reflecting mirror and the reflecting surface of the sub reflecting mirror are mutually facing. The first operation is a movement for focusing at an object positioned between infinity and a near position, and the second operation is a reciprocating movement for changing the focused state after focusing. An amount of movement in the first operation is larger than an amount of movement in the second operation.
First claim
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What is claimed is: 1. A reflecting telescope optical system comprising: a main reflecting mirror having a first reflecting surface; a sub reflecting mirror having a second reflecting surface; and a plurality of lens units, wherein the first reflecting surface of the main reflecting mirror is a concave surface, and the first reflecting surface has a reflecting area, and the reflecting area is formed to be ring-shaped, and the first reflecting surface of the main reflecti…
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- What does patent US9110286B2 cover?
- A reflecting telescope optical system comprises, a main reflecting mirror, a sub reflecting mirror which is disposed at a position facing a reflecting surface of the main reflecting mirror, and a plurality of lens units which is disposed at a position facing a reflecting surface of the sub reflecting mirror. The reflecting surface of the main reflecting mirror is a concave surface, and a reflec…
- Who is the assignee on this patent?
- Olympus Imaging Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B23/02. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).