JP2004061994A5 - - Google Patents
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- Publication number
- JP2004061994A5 JP2004061994A5 JP2002222375A JP2002222375A JP2004061994A5 JP 2004061994 A5 JP2004061994 A5 JP 2004061994A5 JP 2002222375 A JP2002222375 A JP 2002222375A JP 2002222375 A JP2002222375 A JP 2002222375A JP 2004061994 A5 JP2004061994 A5 JP 2004061994A5
- Authority
- JP
- Japan
- Prior art keywords
- optical member
- light source
- fresnel lens
- optical axis
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Claims (7)
この光源の径方向を含む断面において前記光源からの光束を略光軸上に集光させる第1の光学部材と、
光軸中心付近に正レンズ部を有するとともに、周辺部に前記第1の光学部材における集光領域からの光束に集光作用を及ぼす第1のフレネルレンズ面を含むフレネルレンズ部を有する第2の光学部材とを有し、
前記第2の光学部材は、前記フレネルレンズ部よりも周辺部に設けられ、前記集光領域からの光束を反射させて前記フレネルレンズ部に導く反射面を有するとともに、前記フレネルレンズ部は前記反射面で反射した光束を、前記反射面に入射する光束に対して集光させる第2のフレネルレンズ面を有することを特徴とする照明装置。A light source;
A first optical member for condensing a light beam from the light source substantially on the optical axis in a cross section including a radial direction of the light source;
And has a positive lens unit in the vicinity of the optical axis, the having a Fresnel lens part containing a first Fresnel lens surface on the converging action to the light flux from the condenser region those of the first optical member to the peripheral portion 2 An optical member,
The second optical member is provided in a peripheral portion rather than the Fresnel lens portion, and has a reflection surface that reflects a light beam from the condensing region and guides it to the Fresnel lens portion, and the Fresnel lens portion reflects the reflection. An illuminating device comprising a second Fresnel lens surface for condensing a light beam reflected by a surface with respect to a light beam incident on the reflection surface.
10°≦ θ ≦35°
なる条件を満たすことを特徴とする請求項1に記載の照明装置。When the inclination angle with respect to the optical axis of the second Fresnel lens surface is θ,
10 ° ≦ θ ≦ 35 °
The lighting device according to claim 1, wherein the following condition is satisfied.
前記光源および第1の光学部材の移動により、光照射範囲が変化することを特徴とする請求項1から3のいずれかに記載の照明装置。The light source and the first optical member are disposed so as to be integrally movable in the optical axis direction with respect to the second optical member,
4. The illumination device according to claim 1, wherein a light irradiation range is changed by movement of the light source and the first optical member. 5.
この照明装置による照明光を利用して撮影を行うことを特徴とする撮影装置。A lighting device according to any one of claims 1 to 5,
An imaging device that performs imaging using illumination light from the illumination device.
ズームレンズの移動により撮影倍率を変更可能な撮影光学系とを有し、
前記ズームレンズは前記光源および第1の光学部材と連動していることを特徴とする撮影装置。A lighting device according to claim 4;
A photographic optical system capable of changing the photographic magnification by moving the zoom lens;
The zoom lens is linked to the light source and the first optical member.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002222375A JP3826078B2 (en) | 2002-07-31 | 2002-07-31 | LIGHTING DEVICE AND PHOTOGRAPHING DEVICE HAVING THE SAME |
US10/358,675 US6827467B2 (en) | 2002-02-18 | 2003-02-05 | Illuminating apparatus |
CNB031045022A CN1306335C (en) | 2002-02-18 | 2003-02-14 | Lighting device |
KR1020030009967A KR100549594B1 (en) | 2002-02-18 | 2003-02-18 | Illuminating apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002222375A JP3826078B2 (en) | 2002-07-31 | 2002-07-31 | LIGHTING DEVICE AND PHOTOGRAPHING DEVICE HAVING THE SAME |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2004061994A JP2004061994A (en) | 2004-02-26 |
JP2004061994A5 true JP2004061994A5 (en) | 2005-07-21 |
JP3826078B2 JP3826078B2 (en) | 2006-09-27 |
Family
ID=31942408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002222375A Expired - Fee Related JP3826078B2 (en) | 2002-02-18 | 2002-07-31 | LIGHTING DEVICE AND PHOTOGRAPHING DEVICE HAVING THE SAME |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3826078B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7641365B2 (en) * | 2006-10-13 | 2010-01-05 | Orbotech Ltd | Linear light concentrator |
JP5349865B2 (en) * | 2008-08-20 | 2013-11-20 | スタンレー電気株式会社 | Strobe device |
CN106907593A (en) * | 2015-12-23 | 2017-06-30 | 欧普照明股份有限公司 | A kind of Optical devices and lighting device |
-
2002
- 2002-07-31 JP JP2002222375A patent/JP3826078B2/en not_active Expired - Fee Related
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