JP2003287789A - Flash unit - Google Patents
Flash unitInfo
- Publication number
- JP2003287789A JP2003287789A JP2002091524A JP2002091524A JP2003287789A JP 2003287789 A JP2003287789 A JP 2003287789A JP 2002091524 A JP2002091524 A JP 2002091524A JP 2002091524 A JP2002091524 A JP 2002091524A JP 2003287789 A JP2003287789 A JP 2003287789A
- Authority
- JP
- Japan
- Prior art keywords
- fresnel lens
- light emitting
- lens
- concave
- reflector
- 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
Links
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明はカメラに適用される
閃光装置に係り、特に照射角（配光角）を変化させるこ
とができる閃光装置に関する。
【０００２】
【従来の技術】特開平６−２４２４９６号公報に開示さ
れた照射角可変ストロボ装置によれば、閃光発光管（閃
光管）を装着した反射鏡がフレネルレンズから遠ざかる
位置に移動するテレ（Tele) 時において、フレネルレン
ズに取り込まれない無駄な光束が発生し、出射効率が低
下するという不具合を解消するために、テレ時において
反射鏡の直前に凸レンズを挿入する構造を備えている。
【０００３】また、特開平６−１６０９４７号公報に開
示された電子閃光装置は、閃光管を装着した反射器の前
方に第１の集光フレネルレンズ（正のレンズ）を備えて
おり、テレ時において、閃光管から発せられる外側の光
束が第１の集光フレネルレンズに入射できるように、光
軸の外側部分に第２の集光フレネルレンズ（正のレン
ズ）が配置されている。
【０００４】
【発明が解決しようとする課題】しかしながら、上記各
公報に示された従来の装置は、通常の集光レンズ（第１
の集光フレネルレンズ）の他に、凸レンズや第２の集光
フレネルレンズなどのレンズ部材を余分に配置する必要
があり、装置のスペースが増大するという欠点がある。
【０００５】本発明はこのような事情に鑑みてなされた
もので、余分なレンズ部材を付加することなく、テレ時
における出射効率の低下を防止するとともに、小型化・
省スペース化を達成できる閃光装置を提供する。
【０００６】
【課題を解決するための手段】前記目的を達成するため
に本発明に係る閃光装置は、閃光を発する閃光管と、前
記閃光管を保持するとともに、前記閃光管から発生した
光を前方に向けて反射させる略半円筒形状の反射器と、
前記反射器の開口側前方に配設され、凹レンズとして機
能するフレネルレンズと、を備え、前記閃光管及び前記
反射器から成る発光部と前記フレネルレンズの距離を変
えることにより照射角を変更するように構成されている
ことを特徴としている。
【０００７】本発明によれば、反射器の開口側前方に凹
レンズ（負のレンズ）として機能するフレネルレンズ
（以下、凹フレネルレンズという。）を配置したので、
この凹フレネルレンズに対して発光部を近づけると照射
角は狭まり、発光部を遠ざけると照射角は広がる。
【０００８】撮影レンズをテレに設定して撮影を行う場
合には、凹フレネルレンズと発光部を接近させて照射角
の狭い配光を実現し、ワイド（Wide) で撮影を行う場合
には、凹フレネルレンズと発光部の距離を大きくして照
射角の大きい配光を実現する。
【０００９】ワイド時に凹フレネルレンズと発光部の距
離を大きくすると、発光部からの光が拡散して一部の光
束は凹フレネルレンズに入射しなくなり、出射効率の低
下を招くこともあり得るが、ワイド時はテレ時と比較し
てＦナンバーが小さいので、上記現象によってガイドナ
ンバーが低下しても、実質的に問題はない。
【００１０】
【発明の実施の形態】以下添付図面に従って本発明に係
る閃光装置の好ましい実施の形態について詳説する。
【００１１】図１は、本発明の実施の形態に係る閃光装
置の正面図であり、図２は図１の２−２線に沿う概略断
面図である。なお、図２（ａ）は、照射角が最も小さい
状態（テレ時）を示し、図２（ｂ）は、照射角が最も大
きい状態（ワイド時）を示す。
【００１２】この閃光装置１０は、例えば、撮影光学系
にズームレンズを搭載したコンパクトカメラに内蔵さ
れ、撮影光学系の焦点距離に応じて照射角が可変され
る。ワイド側では撮影画角が広いために配光範囲を広
げ、テレ側ではガイドナンバーを上げるために照射角を
狭くする。
【００１３】図１及び図２に示したように、本実施形態
に係る閃光装置１０は、略半円筒形状を有する反射器１
２の内部に閃光管（例えば、キセノン管）１４がその長
手方向を反射器１２の長手方向と一致させた状態で装着
されており、閃光管１４の前方（反射器１２の開口部側
前方）には凹フレネルレンズ１６が設けられている。な
お、「略半円筒形状」には、断面形状が放物線や楕円の
一部を成すものも含むものとする。
【００１４】閃光管１４及び反射器１２から成る発光部
１８は、凹フレネルレンズ１６の光軸方向に沿って前後
移動可能であり、凹フレネルレンズ１６と発光部１８の
距離を変えることにより、照射角が可変される。凹フレ
ネルレンズ１６に対して発光部１８を近づけると、凹フ
レネルレンズ１６から出射される光の照射角は小さくな
り、凹フレネルレンズ１６に対して発光部１８を遠ざけ
ると、凹フレネルレンズ１６から出射される光の照射角
は大きくなる。
【００１５】発光部１８を移動させる手段については図
示しないが、例えば、撮影レンズ鏡胴を駆動するための
モータ（ズームモータ）を兼用し、該モータの動力によ
って反射器１２を駆動する態様がある。また、テレ／ワ
イド切換操作部材の動き（操作による変位）をカムなど
の機械的手段によって反射器１２に伝達することにより
発光部１８を変位させる態様も可能である。
【００１６】本例の凹フレネルレンズ１６は、閃光管１
４側の面（入射面側）にフレネル溝１６Ａが形成されて
いるが、閃光管１４と反対側の面（出射面側）にフレネ
ル溝が形成される構成も可能である。
【００１７】上記の如く構成された閃光装置１０によれ
ば、カメラの撮影光学系をテレ側に設定した場合には、
図２（ａ）に示したように、発光部１８を凹フレネルレ
ンズ１６に接近させる。テレ端の時に発光部１８は凹フ
レネルレンズ１６に最接近する。
【００１８】閃光管１４から発生する閃光は、反射器１
２の内面で反射され、外側に拡散せずに、無駄なく凹フ
レネルレンズ１６に入射する。これにより、集光効率が
高められ、望遠撮影に適した比較的狭い照射角の良好な
配光特性を得ることができる。
【００１９】他方、カメラの撮影光学系をワイド側に設
定した場合には、図２（ｂ）に示したように、発光部１
８を凹フレネルレンズ１６から遠ざける位置に移動させ
る。ワイド端の時に発光部１８は凹フレネルレンズ１６
から最も離れた位置に移動する。ワイド端からテレ端の
中間の位置については、その焦点距離に応じて発光部１
８の停止位置が設定される。
【００２０】凹フレネルレンズ１６と発光部１８の距離
が大きくなると、凹フレネルレンズ１６の作用によって
照射角が大きくなり、広角撮影に適した配光特性を得る
ことができる。
【００２１】ワイド時において、発光部１８を凹フレネ
ルレンズ１６から遠ざけると、発光部１８からの光の一
部が外側に向かって拡散し、凹フレネルレンズ１６に入
射しない無駄な光束が発生し得る。しかし、ワイド時は
テレ時よりもＦナンバーが小さいので、かかる現象によ
って閃光装置１０の出射光量が僅かに低下しても実際の
使用上ほとんど影響はない。
【００２２】なお、図３に示したように、反射器１２の
外側に、光路周辺を覆うように補助反射鏡２０を設ける
態様もある。図３によれば、補助反射鏡２０は凹フレネ
ルレンズ１６の光軸と平行に配置されている。閃光管１
４から発生する閃光は、反射器１２及び補助反射鏡２０
の内面で反射され、外側への拡散が防止されつつ、凹フ
レネルレンズ１６に導かれる。これにより、集光効率が
高められ、上述した光量低下の問題を解決できる。ま
た、補助反射鏡２０で反射された光は、凹フレネルレン
ズ１６に対して大きい入射角で進入し、照射角を大きく
するが、ワイド時の配光特性には有利に寄与する。
【００２３】上述した実施形態では、定位置に固定され
た凹フレネルレンズ１６に対して発光部１８を近づける
方向又は遠ざける方向に移動させる例を説明したが、本
発明の適用範囲はこれに限定されず、凹フレネルレンズ
１６側を移動させる態様も可能である。すなわち、凹フ
レネルレンズ１６と発光部１８が相対移動可能であり、
両者の相対位置の変化によって照射角を可変する構造を
有する閃光装置について本発明を適用することができ
る。
【００２４】
【発明の効果】以上説明したように本発明によれば、発
光部の前方の凹フレネルレンズを配置し、凹フレネルレ
ンズと発光部の距離を変えて照射角を変更する構成にし
たので、テレ時は凹フレネルレンズと発光部を接近させ
て照射角の狭い配光を実現し、ワイド時には凹フレネル
レンズと発光部を遠ざけて照射角の大きい配光を実現す
ることができる。
【００２５】発光部と凹フレネルレンズの距離を大きく
したときに、凹フレネルレンズに入射しない無駄な光束
が発生し得るが、ワイド時はテレ時よりもＦナンバーが
小さいので、実質的にガイドナンバーの低下は問題とな
らない。これにより、従来必要とされていた凸レンズや
第２の集光フレネルレンズなどのレンズ部材が不要にな
り、小型化・省スペース化を達成できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flash device applied to a camera, and more particularly to a flash device capable of changing an irradiation angle (light distribution angle). 2. Description of the Related Art According to a variable irradiation angle strobe device disclosed in Japanese Patent Application Laid-Open No. 6-242496, a telescope in which a reflector mounted with a flash tube (flash tube) moves to a position away from a Fresnel lens. In order to solve the problem that a useless light beam not taken in by the Fresnel lens is generated at the time of (Tele) and the emission efficiency is reduced, a structure is provided in which a convex lens is inserted immediately before the reflecting mirror at the time of telephoto. The electronic flash device disclosed in Japanese Patent Application Laid-Open No. HEI 6-160947 has a first condenser Fresnel lens (positive lens) in front of a reflector on which a flash tube is mounted. In (2), a second condenser Fresnel lens (positive lens) is arranged outside the optical axis so that an outer light beam emitted from the flash tube can enter the first condenser Fresnel lens. [0004] However, the prior art devices disclosed in the above publications use a conventional condensing lens (first
(Condensing Fresnel lens), it is necessary to arrange extra lens members such as a convex lens and a second condensing Fresnel lens, and there is a drawback that the space of the apparatus increases. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to prevent a decrease in emission efficiency at the time of telephoto without adding an extra lens member, and to reduce the size and size.
To provide a flash device capable of achieving space saving. [0006] In order to achieve the above object, a flash device according to the present invention comprises a flash tube for emitting a flash, a flash tube for holding the flash tube, and a light generated from the flash tube. A substantially semi-cylindrical reflector that reflects toward the front,
A Fresnel lens that is disposed in front of the reflector on the opening side and functions as a concave lens, and changes an irradiation angle by changing a distance between the light emitting unit including the flash tube and the reflector and the Fresnel lens. It is characterized by being constituted. According to the present invention, a Fresnel lens (hereinafter, referred to as a concave Fresnel lens) functioning as a concave lens (negative lens) is disposed in front of the reflector on the opening side.
When the light emitting unit is moved closer to the concave Fresnel lens, the irradiation angle becomes narrower, and when the light emitting unit is moved further away, the irradiation angle becomes wider. [0008] When taking a picture with the taking lens set to tele, the concave Fresnel lens and the light emitting section are brought close to each other to realize a light distribution with a narrow irradiation angle, and when taking a picture in a wide (Wide) mode, By increasing the distance between the concave Fresnel lens and the light emitting section, light distribution with a large irradiation angle is realized. If the distance between the concave Fresnel lens and the light-emitting portion is increased when the lens is wide, light from the light-emitting portion is diffused and a part of the light beam does not enter the concave Fresnel lens. Since the F number is smaller in the wide mode than in the tele mode, there is substantially no problem even if the guide number is reduced by the above phenomenon. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a flash device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view of a flash device according to an embodiment of the present invention, and FIG. 2 is a schematic sectional view taken along line 2-2 of FIG. FIG. 2A shows a state in which the irradiation angle is the smallest (telephoto), and FIG. 2B shows a state in which the irradiation angle is the largest (wide). The flash device 10 is built in, for example, a compact camera in which a zoom lens is mounted on a photographing optical system, and an irradiation angle is changed according to a focal length of the photographing optical system. On the wide side, the light distribution range is widened because the shooting angle of view is wide, and on the tele side, the irradiation angle is narrowed to increase the guide number. As shown in FIGS. 1 and 2, a flash device 10 according to this embodiment has a reflector 1 having a substantially semi-cylindrical shape.
A flash tube (e.g., a xenon tube) 14 is mounted inside 2 with its longitudinal direction coinciding with the longitudinal direction of the reflector 12 and is in front of the flash tube 14 (in front of the opening side of the reflector 12). Is provided with a concave Fresnel lens 16. Note that the “substantially semi-cylindrical shape” includes those whose cross-sectional shape forms part of a parabola or an ellipse. The light emitting section 18 comprising the flash tube 14 and the reflector 12 can be moved back and forth along the optical axis of the concave Fresnel lens 16 and emits light by changing the distance between the concave Fresnel lens 16 and the light emitting section 18. The angle is variable. When the light emitting unit 18 is brought closer to the concave Fresnel lens 16, the irradiation angle of light emitted from the concave Fresnel lens 16 becomes smaller, and when the light emitting unit 18 is made farther from the concave Fresnel lens 16, the light emitted from the concave Fresnel lens 16 is emitted. The irradiation angle of the light is increased. Although a means for moving the light emitting section 18 is not shown, for example, there is a mode in which a motor (zoom motor) for driving the photographing lens barrel is also used, and the reflector 12 is driven by the power of the motor. . It is also possible to displace the light emitting unit 18 by transmitting the movement (displacement due to operation) of the tele / wide switching operation member to the reflector 12 by mechanical means such as a cam. The concave Fresnel lens 16 of the present embodiment is
Although the Fresnel groove 16A is formed on the surface on the fourth side (incident surface side), a configuration in which a Fresnel groove is formed on the surface opposite to the flash tube 14 (output surface side) is also possible. According to the flash device 10 configured as described above, when the photographing optical system of the camera is set to the tele side,
As shown in FIG. 2A, the light emitting unit 18 is moved closer to the concave Fresnel lens 16. At the telephoto end, the light emitting section 18 comes closest to the concave Fresnel lens 16. The flash light generated from the flash tube 14 is reflected by the reflector 1
The light is reflected by the inner surface of No. 2 and does not diffuse to the outside, and enters the concave Fresnel lens 16 without waste. As a result, the light-collecting efficiency is improved, and good light distribution characteristics with a relatively narrow irradiation angle suitable for telephotography can be obtained. On the other hand, when the photographing optical system of the camera is set to the wide side, as shown in FIG.
8 is moved to a position away from the concave Fresnel lens 16. At the wide end, the light emitting section 18 is
Move to the farthest position from. At a position intermediate from the wide end to the tele end, the light emitting unit 1 is set in accordance with the focal length.
8 stop positions are set. When the distance between the concave Fresnel lens 16 and the light emitting section 18 is increased, the irradiation angle is increased by the action of the concave Fresnel lens 16 and light distribution characteristics suitable for wide-angle photographing can be obtained. When the light emitting section 18 is moved away from the concave Fresnel lens 16 at the time of widening, a part of the light from the light emitting section 18 diffuses outward, and a useless light flux which does not enter the concave Fresnel lens 16 may be generated. . However, since the F number is smaller at the time of widening than at the time of telephoto, even if the amount of light emitted from the flash device 10 slightly decreases due to such a phenomenon, there is almost no effect on actual use. As shown in FIG. 3, there is also a mode in which an auxiliary reflecting mirror 20 is provided outside the reflector 12 so as to cover the periphery of the optical path. According to FIG. 3, the auxiliary reflecting mirror 20 is arranged parallel to the optical axis of the concave Fresnel lens 16. Flash tube 1
4 emits a flash light from the reflector 12 and the auxiliary reflecting mirror 20.
And is guided to the concave Fresnel lens 16 while being prevented from diffusing outward. As a result, the light collection efficiency is increased, and the above-described problem of a decrease in the amount of light can be solved. The light reflected by the auxiliary reflecting mirror 20 enters the concave Fresnel lens 16 at a large incident angle and increases the irradiation angle, but advantageously contributes to the light distribution characteristics at the time of widening. In the above-described embodiment, an example has been described in which the light emitting section 18 is moved in a direction to approach or move away from the concave Fresnel lens 16 fixed at a fixed position. However, the applicable range of the present invention is not limited to this. Instead, a mode in which the concave Fresnel lens 16 side is moved is also possible. That is, the concave Fresnel lens 16 and the light emitting unit 18 can move relatively,
The present invention can be applied to a flash device having a structure in which the irradiation angle is changed by changing the relative position between the two. As described above, according to the present invention, the concave Fresnel lens in front of the light emitting section is arranged, and the irradiation angle is changed by changing the distance between the concave Fresnel lens and the light emitting section. Therefore, at the time of telephoto, the concave Fresnel lens and the light emitting section are brought closer to each other to realize a light distribution with a narrow irradiation angle, and at the time of wide angle, the concave Fresnel lens and the light emitting section are moved away from each other to realize a light distribution with a large irradiation angle. When the distance between the light emitting portion and the concave Fresnel lens is increased, a useless light beam which does not enter the concave Fresnel lens may be generated. Is not a problem. This eliminates the need for a conventionally required lens member such as a convex lens or a second condensing Fresnel lens, and achieves miniaturization and space saving.
【図面の簡単な説明】
【図１】本発明の実施の形態に係る閃光装置の正面図
【図２】図１の２−２線に沿う概略断面図であり、図２
（ａ）は照射角が最も小さい状態（テレ時）を示し、図
２（ｂ）は照射角が最も大きい状態（ワイド時）を示す
図
【図３】本発明の他の実施形態を示す概略断面図
【符号の説明】
１０…閃光装置、１２…反射器、１４…閃光管、１６…
凹フレネルレンズ、１８…発光部、２０…補助反射鏡BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a flash device according to an embodiment of the present invention. FIG. 2 is a schematic sectional view taken along line 2-2 in FIG.
FIG. 2A shows a state in which the irradiation angle is the smallest (at the time of telephoto), and FIG. 2B shows a state in which the irradiation angle is the largest (at the time of widening). FIG. 3 is a schematic view showing another embodiment of the present invention. Cross-sectional view [Description of reference numerals] 10: Flash device, 12: Reflector, 14: Flash tube, 16:
Concave Fresnel lens, 18: Light emitting unit, 20: Auxiliary reflector
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｇ０３Ｂ 15/03 Ｇ０３Ｂ 15/03 Ｇ // Ｆ２１Ｙ 101:00 Ｆ２１Ｙ 101:00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) G03B 15/03 G03B 15/03 G // F21Y 101: 00 F21Y 101: 00
Claims (1)
た光を前方に向けて反射させる略半円筒形状の反射器
と、 前記反射器の開口側前方に配設され、凹レンズとして機
能するフレネルレンズと、を備え、 前記閃光管及び前記反射器から成る発光部と前記フレネ
ルレンズの距離を変えることにより照射角を変更するよ
うに構成されていることを特徴とする閃光装置。Claims: 1. A flash tube that emits flash light, a substantially semi-cylindrical reflector that holds the flash tube and reflects light generated from the flash tube toward the front, A Fresnel lens disposed in front of the reflector on the opening side and functioning as a concave lens, wherein the irradiation angle is changed by changing a distance between the light emitting unit including the flash tube and the reflector and the Fresnel lens. A flash device characterized by being constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002091524A JP4061637B2 (en) | 2002-03-28 | 2002-03-28 | Flash device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002091524A JP4061637B2 (en) | 2002-03-28 | 2002-03-28 | Flash device |
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| Publication Number | Publication Date |
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| JP2003287789A true JP2003287789A (en) | 2003-10-10 |
| JP4061637B2 JP4061637B2 (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2002091524A Expired - Fee Related JP4061637B2 (en) | 2002-03-28 | 2002-03-28 | Flash device |
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| JP (1) | JP4061637B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007093756A (en) * | 2005-09-27 | 2007-04-12 | Fujifilm Corp | Flash light emitting device and imaging apparatus |
| JP2008153123A (en) * | 2006-12-19 | 2008-07-03 | Koito Mfg Co Ltd | Vehicle lighting lamp |
| JP2012164510A (en) * | 2011-02-07 | 2012-08-30 | Nissei Kogyo Yugenkoshi | Lighting system |
| KR200473869Y1 (en) | 2013-01-24 | 2014-08-06 | 손근배 | Let light for showcase |
| US9086207B2 (en) | 2011-12-19 | 2015-07-21 | Nokia Technologies Oy | Apparatus, methods, and non-transitory computer readable storage mediums for controlling light emitted by a flash unit |
| WO2019054934A1 (en) * | 2017-09-18 | 2019-03-21 | Profoto Aktiebolag | A flash housing and a method for emitting a beam lobe with an essentially circular cross section |
| CN109981848A (en) * | 2019-03-28 | 2019-07-05 | 维沃移动通信有限公司 | A kind of lamp mould group and terminal device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900005536A1 (en) * | 2019-04-10 | 2020-10-10 | Doss Visual Solution S R L | IMAGE ACQUISITION METHOD FOR AN OPTICAL INSPECTION MACHINE |
-
2002
- 2002-03-28 JP JP2002091524A patent/JP4061637B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007093756A (en) * | 2005-09-27 | 2007-04-12 | Fujifilm Corp | Flash light emitting device and imaging apparatus |
| JP2008153123A (en) * | 2006-12-19 | 2008-07-03 | Koito Mfg Co Ltd | Vehicle lighting lamp |
| JP2012164510A (en) * | 2011-02-07 | 2012-08-30 | Nissei Kogyo Yugenkoshi | Lighting system |
| US9086207B2 (en) | 2011-12-19 | 2015-07-21 | Nokia Technologies Oy | Apparatus, methods, and non-transitory computer readable storage mediums for controlling light emitted by a flash unit |
| KR200473869Y1 (en) | 2013-01-24 | 2014-08-06 | 손근배 | Let light for showcase |
| WO2019054934A1 (en) * | 2017-09-18 | 2019-03-21 | Profoto Aktiebolag | A flash housing and a method for emitting a beam lobe with an essentially circular cross section |
| CN109981848A (en) * | 2019-03-28 | 2019-07-05 | 维沃移动通信有限公司 | A kind of lamp mould group and terminal device |
| WO2020192372A1 (en) * | 2019-03-28 | 2020-10-01 | 维沃移动通信有限公司 | Lamp module and terminal device |
| CN109981848B (en) * | 2019-03-28 | 2021-03-09 | 维沃移动通信有限公司 | Lamp module and terminal equipment |
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| Publication number | Publication date |
|---|---|
| JP4061637B2 (en) | 2008-03-19 |
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