Title:
照明光学系
Document Type and Number:
Japanese Patent JP5021849
Kind Code:
B2
Abstract:
An illumination optical system that can illuminate laterally and that is suitable for an observation optical system with a wide angular field is provided. Provided is an illumination optical system (1), including a prism (2) disposed on an incident optical axis and a lens (3) that is disposed at a stage before or a stage after the prism (2) and that has two reflection surfaces (2b, 2c), wherein at least one of the reflection surfaces (2b, 2c) is a transmission/reflection surface (2b). Additionally provided is an illumination optical system which includes a prism having a surface that is disposed so as to obliquely intersect with an incident optical system, that transmits a part of the entering light to be emitted therefrom, and that deflects at least part of the rest of the light in a direction that intersects with the incident optical axis to be emitted therefrom. Furthermore, an illumination optical system provided with a rod lens that is disposed so that a longitudinal direction thereof is inclined with respect to an incident optical axis is provided.
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Inventors:
Yuji Kamo
Hideyasu Takato
Tsutomu Sasamoto
Hideyasu Takato
Tsutomu Sasamoto
Application Number:
JP2011538745A
Publication Date:
September 12, 2012
Filing Date:
November 02, 2010
Export Citation:
Assignee:
オリンパスメディカルシステムズ株式会社
International Classes:
G02B23/26; A61B1/00; G02B17/08
Domestic Patent References:
| JPH11125773A | 1999-05-11 | |||
| JPS5987403A | 1984-05-21 | |||
| JPH04105634A | 1992-04-07 | |||
| JPH1090603A | 1998-04-10 | |||
| JPS50149170A | 1975-11-29 | |||
| JP2000193894A | 2000-07-14 | |||
| JPH04142506A | 1992-05-15 | |||
| JP2009217167A | 2009-09-24 | |||
| JP2009092966A | 2009-04-30 | |||
| JP2005250408A | 2005-09-15 |
Attorney, Agent or Firm:
Kunio Ueda
Noriharu Fujita
Noriharu Fujita