JP2012042902A - Lens hood - Google Patents

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JP2012042902A
JP2012042902A JP2010191422A JP2010191422A JP2012042902A JP 2012042902 A JP2012042902 A JP 2012042902A JP 2010191422 A JP2010191422 A JP 2010191422A JP 2010191422 A JP2010191422 A JP 2010191422A JP 2012042902 A JP2012042902 A JP 2012042902A
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lens
camera
window glass
hood
imaging device
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Ryuichi Igarashi
竜一 五十嵐
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PROBLEM TO BE SOLVED: To provide a foldable and telescopic lens hood capable of preventing reflection from the inside even when a lens is directed diagonally in taking a picture through glass.SOLUTION: A lens hood that is attached to an imaging device such as a camera or to a lens of the imaging device and has a triangular prism shape prevents an image reflected in window glass from being taken with an outside subject when the inside of the window glass is bright, by attaching an aperture 2 firmly to the glass in imaging the subject. The lens hood becomes foldable by using an elastic material or foldable member for two triangular-shaped faces among four faces excepting the aperture 2 and using a hinge or foldable member for joint parts on the other two faces.

Description

本発明は、飛行機、電車、自動車あるいは建物等の窓ガラス越しに撮像する際、カメラまたはカメラのレンズに取り付けて使用するレンズフードに関するものである。  The present invention relates to a lens hood that is used by being attached to a camera or a lens of a camera when taking an image through a window glass of an airplane, a train, an automobile, a building, or the like.

従来、窓ガラスの内側から窓ガラスの外側の被写体を撮像する際、窓ガラスの内側が明るいと、窓ガラスに映った像が外側の風景と共に撮像されてしまう問題があり、窓ガラスの外側の被写体が窓ガラス面に対して垂直方向に存在するものであれば、窓ガラス面に対しカメラもしくはカメラのレンズフードを垂直に密着させて撮像することで、その問題を回避することは可能であったが、窓ガラスの外側の被写体が、窓ガラス面とカメラの光軸の交点における小さい方の角度が0度超90度未満の間にある場合には、カメラの撮像範囲に対して、暗幕を取り付けて窓の内側の像が外側の風景と共に撮像されないように撮像をしていた。  Conventionally, when photographing an object outside the window glass from the inside of the window glass, if the inside of the window glass is bright, there is a problem that an image reflected on the window glass is captured together with the outside landscape. If the subject is present in a direction perpendicular to the window glass surface, it is possible to avoid the problem by imaging the camera or the lens hood of the camera in close contact with the window glass surface. However, if the object outside the window glass has a smaller angle at the intersection of the window glass surface and the optical axis of the camera between 0 ° and less than 90 °, the dark curtain is displayed with respect to the imaging range of the camera. The image was taken so that the image inside the window was not taken with the scenery outside.

特許公開平11−69211号Patent Publication No. 11-69211

飛行機、電車、自動車あるいは建物等の窓ガラスでは、開閉できない固定の窓ガラスが多い。このような場合に、窓ガラスの内側から窓ガラスの外側の風景を撮像する際、窓ガラスの内側が明るいと、窓ガラスに映った像が外側の風景と共に撮像されてしまう問題があった。しかし、窓ガラスの外側の被写体が窓ガラス面に対して垂直方向に存在するものであれば、窓ガラス面に対しカメラもしくはカメラのレンズフードを垂直に密着させて撮像することで、その問題を回避することは可能ではあったが、窓ガラスの外側の被写体もしくは撮像対象角度が、ガラス面とカメラの光軸の交点における小さい方の角度が0度超90度未満の範囲にある場合には、カメラの撮像範囲に対して、暗幕を取付けなくてはならず、その場合、撮像を目的とした外出の際には、暗幕の携行を余議なくされ、いざ撮像の際には、暗幕の着脱やその固定場所の問題などがあった。また、先行技術文献特許公開平11−69211号の技術における電子カメラのフード部は、カメラを窓ガラスに固定する固定具と一体で使用することを前提としたフードであり、フードに具備される保持部にカメラのレンズに具備した略球状部を挿入することで回転自在としているため、フード本体の角度を調整することはできない。また、先行技術文献特許公開平11−69211号の技術における電子カメラでは、装着サイズの違うカメラなどの撮像装置および前記撮像装置のレンズに対して汎用性が無いため、1つの装着サイズに対して、前記サイズに合致した開口部を有するフードである必要があり、装着サイズの違うカメラなどの撮像装置もしくは前記撮像装置のレンズには使用できないという汎用性の問題があった。さらに先行技術文献特許公開平11−69211号の技術における電子カメラのフード部は、固定形状のものであると考えられ、携帯性や収納性にも問題があった。  There are many fixed window glasses that cannot be opened and closed in airplanes, trains, automobiles or buildings. In such a case, when taking a picture of the scenery outside the window glass from the inside of the window glass, there is a problem that if the inside of the window glass is bright, an image reflected on the window glass is taken together with the outside scenery. However, if the subject outside the window glass is in a direction perpendicular to the window glass surface, the problem can be solved by imaging the camera or the lens hood of the camera in close contact with the window glass surface. Although it was possible to avoid, when the subject outside the window glass or the imaging target angle is in the range where the smaller angle at the intersection of the glass surface and the optical axis of the camera is more than 0 degrees and less than 90 degrees A black curtain must be attached to the camera's imaging range. In that case, when going out for the purpose of imaging, the black curtain must be carried, and when shooting, There was a problem of attaching and detaching and its fixing place. Moreover, the hood part of the electronic camera in the technique of prior art document patent publication 11-69211 is a hood on the assumption that it is used integrally with a fixture for fixing the camera to the window glass, and is provided in the hood. The angle of the hood body cannot be adjusted because the holding portion is rotatable by inserting a substantially spherical portion provided in the camera lens. In addition, the electronic camera in the technology disclosed in Japanese Patent Application Laid-Open No. 11-69211 has no versatility with respect to imaging devices such as cameras with different mounting sizes and lenses of the imaging devices. The hood must have an opening that matches the size, and there is a problem of versatility that it cannot be used for an imaging device such as a camera with a different mounting size or a lens of the imaging device. Furthermore, the hood part of the electronic camera in the technique of Japanese Patent Application Laid-Open No. 11-69211 is considered to have a fixed shape, and there is a problem in portability and storage.

本発明は上記のような問題を解決するためになされたもので、窓ガラスの外側の被写体が、ガラス面とカメラの光軸の交点における小さい方の角度が0度超90度未満の間にある場合、もしくはその角度の範囲内において移動する被写体を追跡撮像する場合、窓ガラスの内側が明るくても、窓ガラスに映った像が外側の風景と共に撮像されることなく、さらに2種類以上のサイズの異なるカメラなどの撮像装置もしくは前記撮像装置のレンズに対しても、サイズの差を埋める部品として着脱可能なアタッチメントを付属部品として用意することで、装着サイズの異なるカメラなどの撮像装置もしくは前記撮像装置のレンズに対しても着脱容易で携行にも適した折り畳みを可能とするレンズフードを提供することを目的としている。  The present invention has been made to solve the above-described problems. An object on the outside of the window glass has a smaller angle at the intersection of the glass surface and the optical axis of the camera between 0 and 90 degrees. In some cases, or when tracking an object moving within the range of the angle, even if the inside of the window glass is bright, the image reflected on the window glass is not taken together with the outside scenery, and two or more types For an imaging device such as a camera of different size or a lens of the imaging device, an attachment device that can be attached and detached as a component that fills the difference in size is prepared as an accessory part, so that the imaging device such as a camera of different mounting size or the above An object of the present invention is to provide a lens hood that can be easily attached to and detached from the lens of the imaging apparatus and can be folded.

本発明においては、レンズフードは、撮像装置もしくは前記撮像装置のレンズを取り付けするための開口部1と前記開口部より大きい長四辺形もしくは長台形の開口部2とを備え、ガラス越しに斜めの角度にある被写体を撮像する際に、開口部1に撮像装置もしくは前記撮像装置のレンズを取り付け、開口部2をガラスに密着させて撮像することにより、窓ガラスの内側が明るい時に窓ガラスに映った像が外側の被写体と共に撮像されることを防止することができるように三角柱形状もしくはその類似形状を有する。  In the present invention, the lens hood includes an opening 1 for attaching the imaging device or the lens of the imaging device, and an opening 2 having a longer quadrilateral or longer trapezoidal shape than the opening, and is oblique through the glass. When imaging an object at an angle, an image pickup device or a lens of the image pickup device is attached to the opening 1 and the opening 2 is brought into close contact with the glass so that the image is reflected on the window glass when the inside of the window glass is bright. It has a triangular prism shape or a similar shape so that the captured image can be prevented from being picked up together with the outside subject.

本発明においては、レンズフードは、折り畳むことができるように、前記開口部2以外の四面の内、三角形の2面を伸縮素材もしくは折り曲げ可能な部材とし、他の2面の接合部はヒンジもしくは折り曲げ可能な部材を具備する。  In the present invention, the lens hood can be folded so that two of the three surfaces other than the opening 2 are made of a triangular material or a bendable member, and the other two surfaces have hinges or joints. A foldable member is provided.

本発明においては、レンズフードは、窓ガラスの外側の被写体が、ガラス面とカメラの光軸の交点における小さい方の角度が0度超90度未満の間にある場合、もしくはその角度の範囲内において移動する被写体を追跡撮像する場合、前記角度の範囲内で撮像方位を可動できるようにするために、前記開口部2以外の四面の内、三角形の2面を伸縮素材とすることが好ましい。  In the present invention, the lens hood is used when the object outside the window glass has a smaller angle between the glass surface and the optical axis of the camera between 0 and 90 degrees, or within the range of the angle. When tracking a moving subject in FIG. 2, it is preferable that two triangular surfaces out of the four surfaces other than the opening 2 are made of a stretchable material so that the imaging azimuth can be moved within the range of the angle.

本発明においては、レンズフードは、ガラス面とカメラの光軸の交点における角度が小さい方の角度が小さければ小さい程、例えば10度から30度である場合、フードによって画像の一部が隠れるケラレが発生しやすくなるが、これを防止するため、前記開口部2を長台形にすることが好ましい。  In the present invention, in the lens hood, when the angle at the intersection of the glass surface and the optical axis of the camera is smaller, the smaller the angle, for example, 10 degrees to 30 degrees, the vignetting part of the image is hidden by the hood. However, in order to prevent this, it is preferable that the opening 2 has a long trapezoid shape.

本発明においては、レンズフードは、汎用の各種カメラなどの撮像装置もしくは前記撮像装置のレンズにも取り付けできるように、カメラなどの撮像装置もしくは前記撮像装置のレンズを取り付けする開口部1とのサイズの違いを埋める付属の部品としてアタッチメントを具備することが好ましい。  In the present invention, the size of the lens hood and the opening 1 for attaching the imaging device such as a camera or the lens of the imaging device so that the lens hood can be attached to an imaging device such as a general-purpose various camera or the lens of the imaging device. It is preferable to provide an attachment as an accessory part that fills the difference.

本発明においては、レンズフードは、後方からの光を遮断あるいは減衰させるための黒色、濃色あるいは不透明とさせることが好ましい。  In the present invention, the lens hood is preferably black, dark or opaque to block or attenuate light from the rear.

本発明によれば、窓ガラスの外側の被写体が、窓ガラス面とカメラの光軸の交点における小さい方の角度が10度超90度未満の間にある場合でも、暗幕を取り付けすることなく、三角柱形状のレンズフードに斜め方向からカメラのレンズを装着し、レンズフードの開口部2をガラスに密着させて使用することで、窓ガラスの内側からの光を、遮断あるいは減衰させ、内部が明るい場合でも、内部の影響を受けずに斜めの角度から外部を撮像することが可能となる。また、本発明によれば、前記開口部2以外の四面の内、三角形の2面を伸縮素材もしくは折り曲げ可能な部材とし、他の2面の接合部はヒンジもしくは折り曲げ可能な部材とすることで、収納や携行などの利便性がよくなる折り畳みを可能とする。さらに、本発明によれば、前記開口部2以外の四面の内、三角形の2面を伸縮素材で構成させることで、窓ガラスの外側の被写体が人間や動物など移動する被写体である場合、ガラス面とカメラの光軸の交点における小さい方の角度が仮に最大で45度の設定で制作したレンズフードを例にした場合、45度から90度の範囲内であれば、移動するものを追跡しながら、斜めの角度から次第に垂直角度へ、もしくはその逆の垂直角度から次第に斜めへと角度を移動させながら撮像しても窓ガラスの内側からの光を、遮断あるいは減衰させ、室内や車内が明るい場合でも、内部の影響を受けずに撮像することも可能となる。さらに本発明によれば、レンズフードのレンズ取り付け枠の内側のサイズ以下のサイズであれば、付属のアタッチメントの厚さを調節することで、サイズや形状の違う汎用のレンズや撮像装置にも対応可能となる。  According to the present invention, even when a subject outside the window glass has a smaller angle between the window glass surface and the optical axis of the camera between 10 degrees and less than 90 degrees, without attaching a dark curtain, By attaching the camera lens to the triangular prism-shaped lens hood from an oblique direction and using the lens hood opening 2 in close contact with the glass, light from the inside of the window glass is blocked or attenuated, and the interior is bright. Even in this case, the outside can be imaged from an oblique angle without being affected by the inside. Further, according to the present invention, among the four surfaces other than the opening 2, two triangular surfaces are made of a stretchable material or a bendable member, and the joint portions of the other two surfaces are hinges or bendable members. It enables folding that is convenient for storage and carrying. Furthermore, according to the present invention, when the subject outside the window glass is a moving subject such as a human being or an animal by configuring two triangular surfaces out of the four surfaces other than the opening 2 with an elastic material, In the case of a lens hood produced with the smaller angle at the intersection of the surface and the optical axis of the camera set to 45 degrees as an example, if it is within the range of 45 degrees to 90 degrees, the moving object is tracked. However, even when taking an image while moving the angle gradually from the oblique angle to the vertical angle or vice versa, the light from the inside of the window glass is blocked or attenuated, and the interior and interior of the vehicle are bright. Even in this case, it is possible to take an image without being influenced by the inside. Furthermore, according to the present invention, if the size is smaller than the inner size of the lens mounting frame of the lens hood, by adjusting the thickness of the attached attachment, it can be used for general-purpose lenses and imaging devices with different sizes and shapes. It becomes possible.

本発明の使用方法例を示す斜視図である。It is a perspective view which shows the usage example of this invention. 本発明のレンズフードの背面斜視図である。It is a back perspective view of the lens hood of the present invention. 本発明のレンズフードの正面斜視図である。It is a front perspective view of the lens hood of the present invention. 本発明の三角面を伸縮素材にしたレンズフードの正面斜視図である。It is a front perspective view of the lens hood which used the triangular surface of the present invention as an elastic material. 本発明の折り畳みの状態を示した正面斜視図である。It is the front perspective view which showed the state of the folding of this invention. 本発明の伸縮素材を利用し、伸ばした状態の背面斜視図である。It is a back perspective view of the state where the elastic material of the present invention was used and extended. 本発明の開口部2を長台形状にしたもの斜視図である。It is the perspective view which made the opening part 2 of this invention the long trapezoid shape.

本発明においては、レンズフードを装着させた状態のカメラを窓ガラスの内側から手でしっかりと押さえるか三脚や吸盤などの固定具を使用して固定し、レンズフードの前記開口部2と窓ガラス面をしっかりと密着させた状態で使用する。撮像者は、窓外の風景を見ながら撮像したい時に、シャッターを押して窓外の風景を撮像するか、ビデオカメラの場合、撮像したい時間を撮像し続ける。また、公共の交通機関等の窓で使用する場合には、容易にかつガラスを汚さないようにするため、特許公開平11−69211号のような固定具を具備したレンズフードでガラス面に固定するのではなく、固定する三脚や吸盤などの機材とレンズフードを別々の個体としておくことが望ましく、レンズフード本体に窓ガラス面への固定をするための固定具は具備しない。また、窓内が明るく例えば照明があっても、本発明によれば、レンズフードの前記開口部2と窓ガラス面をしっかりと密着させた状態で使用することで、窓の内側の像が外側の風景と共に撮像されることはない。  In the present invention, the camera with the lens hood attached is firmly held by hand from the inside of the window glass or fixed using a fixing tool such as a tripod or a suction cup, and the opening 2 of the lens hood and the window glass are fixed. Use with the surface firmly attached. When the photographer wants to take an image while looking at the scenery outside the window, he or she presses the shutter to take an image of the scenery outside the window, or in the case of a video camera, continues to take an image of the desired time. In addition, when used in a window of public transportation, etc., it is fixed to the glass surface with a lens hood equipped with a fixture such as Japanese Patent Publication No. 11-69211 so that the glass is not easily soiled. Instead, it is desirable to keep the equipment such as a tripod and sucker to be fixed and the lens hood as separate individuals, and the lens hood main body does not have a fixing tool for fixing to the window glass surface. In addition, even if the inside of the window is bright, for example, there is illumination, according to the present invention, the image inside the window is outside by using the lens hood with the opening 2 and the window glass surface in close contact with each other. It will not be taken with the scenery.

また本発明においては、レンズフードを三角柱形状とすることで、窓ガラスの面とカメラ部の光軸との角度を10度から90度に設定することができるが、実際の撮像の時には、ガラス面とカメラ部の光軸との交点の角度は20度から80度が好ましく、さらに好ましくは、30度から70度である。このように窓ガラスの面に対してカメラ部の光軸を斜めにすることによって、電車内から外を撮像する場合には、斜め前方あるいは後方に向けて撮像することが出来、座席に着座した人間の視線の角度に近い撮像ができ、より臨場感あふれる撮像を可能として好ましい。また、飛行機内から地上の風景を撮像する場合には、斜め下方を向けて撮像することが出来て好ましい。また、ロープウェイやケーブルカーなど、斜め上方に向けて撮像出来て好ましい。自動車のフロントガラスの内側から外を撮像する場合には、カメラを水平方向に向けて撮像することが出来て好ましい。  In the present invention, the angle between the surface of the window glass and the optical axis of the camera unit can be set from 10 degrees to 90 degrees by making the lens hood a triangular prism shape. The angle of the intersection between the surface and the optical axis of the camera unit is preferably 20 degrees to 80 degrees, and more preferably 30 degrees to 70 degrees. In this way, by tilting the optical axis of the camera unit with respect to the surface of the window glass, when imaging the outside from the inside of the train, it can be imaged diagonally forward or backward, and seated on the seat Imaging that is close to the angle of human gaze can be performed, which is preferable as it enables imaging with a more realistic feeling. In addition, when capturing an image of a landscape on the ground from inside an airplane, it is preferable that the image can be captured obliquely downward. Moreover, it is preferable that an image can be taken obliquely upward, such as a ropeway or a cable car. When imaging outside from the inside of the windshield of a car, it is preferable because the camera can be imaged in the horizontal direction.

本発明においては、レンズフードの前記開口部2以外の四面の内、三角形の2面を伸縮素材とすることで、開口部2を窓ガラス面に密着させたまま、カメラの光軸の角度を自由に変えることができるので、窓ガラスの外側の被写体が人間や動物など移動する被写体である場合、ガラス面とカメラの光軸の交点における小さい方の角度が、仮に最大で45度の設定で制作したレンズフードを例にした場合、45度から90度の範囲内であれば、移動するものを追跡しながら、斜めの角度から次第に垂直角度へ、もしくはその逆の垂直角度から次第に斜めへと角度を移動させながら撮像することも可能となる。  In the present invention, among the four surfaces other than the opening 2 of the lens hood, two triangular surfaces are made of an elastic material so that the angle of the optical axis of the camera can be adjusted while keeping the opening 2 in close contact with the window glass surface. Since the subject outside the window glass is a moving subject such as a human being or an animal, the smaller angle at the intersection of the glass surface and the optical axis of the camera can be set to a maximum of 45 degrees. Taking the produced lens hood as an example, if it is within the range of 45 degrees to 90 degrees, it will gradually move from the oblique angle to the vertical angle, or vice versa, while tracking the moving object. It is also possible to take an image while moving the angle.

また本発明においては、レンズフードの前記開口部2以外の四面の内、三角形の2面を伸縮素材もしくは折り曲げ可能な部材とし、他の2面の接合部はヒンジもしくは折り曲げ可能な部材を具備することで、折り畳みを可能にし、収納や携行などの利便性の向上を図ることができる。  In the present invention, among the four surfaces other than the opening 2 of the lens hood, two triangular surfaces are made of a stretchable material or a foldable member, and the other two surfaces have hinges or a foldable member. Thus, it can be folded, and convenience such as storage and carrying can be improved.

また本発明において、ガラス面とカメラの光軸の交点における小さい方の角度が小さければ小さい程、例えば10度から30度などである場合、カメラの光軸線と窓ガラス面との交点までの光軸線の距離が長くなり、フードによって画像の一部が隠れるケラレが発生しやすくなるが、前記開口部2を長台形にすることで防止することができる。  In the present invention, the smaller the angle at the intersection of the glass surface and the optical axis of the camera, the smaller the angle, for example, 10 degrees to 30 degrees, etc., the light up to the intersection of the camera optical axis and the window glass surface. The distance between the axes becomes long, and vignetting that part of the image is hidden by the hood is likely to occur, but this can be prevented by making the opening 2 a long trapezoid.

また本発明においては、レンズフードの前記開口部1に取り付けるカメラなどの撮像装置もしくは前記撮像装置のレンズに、開口部1とのサイズの違いを埋める付属の部品を取り付けることで、開口部1の内側のサイズよりも小さいサイズのカメラなどの撮像装置もしくは前記撮像装置のレンズであれば、前記サイズの差をアタッチメントで埋めることが可能となり、サイズの異なる各種汎用のカメラなどの撮像装置もしくは前記撮像装置のレンズを取り付けすることが可能となる。  Further, in the present invention, an attachment device that fills the size difference from the opening 1 is attached to an imaging device such as a camera attached to the opening 1 of the lens hood or a lens of the imaging device. If it is an imaging device such as a camera smaller than the inner size or the lens of the imaging device, the size difference can be filled with an attachment, and various imaging devices such as various general-purpose cameras or the imaging It is possible to attach the lens of the device.

次に、本発明を実施例によりさらに詳細に説明するが、本発明はこれら実施例に限定されるものではない。  EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited to these Examples.

図1は本発明の実施例1を示す斜視図である。このタイプは、撮影時に開口部1の寸法を変えることのできないタイプであり、窓ガラス面とカメラの光軸との交点の角度は一定となる。図1において、5は窓ガラス、6はカメラ、3はレンズフードである。図2は本発明の実施例1のレンズフード3の斜視図である。図2において、3aと3bの接合部をヒンジ3dとし、2片の三角形状面も折り畳み可能なヒンジ3cを具備したものである。ヒンジ3cおよびヒンジ3dは、折り畳みが可能な部材であれば、ヒンジにこだわるものではない。また、3iのレンズ取り付け枠にレンズを挿入し固定する際、3jのネジでレンズの締め付けをし、レンズとフードを固定する。また、レンズの飛び出しを防止するために、レンズの取り付け枠3iの出口には、係止部3kを設ける。さらに、レンズのサイズ違いにも対応できるように、アタッチメント4をレンズに装着し、そのままレンズ取り付け枠3iに挿入することで、レンズのサイズの違う汎用のレンズを取り付けすることが可能となる。このアタッチメント4はアタッチメントの厚み4aを変更することで、3iの内側のサイズ以下のものであれば各種サイズおよび形状のレンズに対応可能となる。  FIG. 1 is a perspective view showing Embodiment 1 of the present invention. In this type, the size of the opening 1 cannot be changed at the time of photographing, and the angle of the intersection between the window glass surface and the optical axis of the camera is constant. In FIG. 1, 5 is a window glass, 6 is a camera, and 3 is a lens hood. FIG. 2 is a perspective view of the lens hood 3 according to the first embodiment of the present invention. In FIG. 2, the joint part of 3a and 3b is the hinge 3d, and the hinge 3c which can fold also two pieces of triangular surfaces is provided. As long as the hinge 3c and the hinge 3d can be folded, they are not particular about the hinge. Further, when the lens is inserted and fixed in the 3i lens mounting frame, the lens is fastened with a screw 3j to fix the lens and the hood. In order to prevent the lens from popping out, a locking portion 3k is provided at the exit of the lens mounting frame 3i. Furthermore, it is possible to attach a general-purpose lens having a different lens size by attaching the attachment 4 to the lens and inserting it directly into the lens mounting frame 3i so as to cope with the difference in lens size. By changing the thickness 4a of the attachment 4, the attachment 4 can correspond to lenses of various sizes and shapes as long as it is smaller than the size inside 3i.

図3は、図2のレンズフードをガラスに密着させて使用する開口部2からみた斜視図である。図4は、本発明の実施例2を示す斜視図であり、図3において、3eと3fおよび3gと3hのそれぞれの三角形状面を合わせて1枚の面とし、この2片の三角形状面に伸縮素材を使用したレンズフードの斜視図である。このタイプは、三角形状面が伸縮自在になるため、撮影時に開口部2の寸法を変えることができ、窓ガラス面とカメラの光軸の交点の角度を変えることができる。  FIG. 3 is a perspective view of the lens hood of FIG. 2 as viewed from the opening 2 that is used in close contact with the glass. FIG. 4 is a perspective view showing Embodiment 2 of the present invention. In FIG. 3, the triangular surfaces of 3e and 3f and 3g and 3h are combined into one surface, and these two pieces of triangular surfaces are shown. It is a perspective view of the lens hood which used the expansion-contraction material for. In this type, since the triangular surface can be expanded and contracted, the size of the opening 2 can be changed at the time of photographing, and the angle of the intersection of the window glass surface and the optical axis of the camera can be changed.

図5は、図1から図4に記載のレンズフードを、折り畳んだ状態の斜視図である。このように折り畳み可能になることで、携行や収納の利便性を向上させる。  FIG. 5 is a perspective view of the lens hood described in FIGS. 1 to 4 in a folded state. By being able to be folded in this way, convenience of carrying and storage is improved.

図6は、図4のレンズフードの伸縮特性を活かして、カメラの光軸角度を垂直角度にした状態のレンズフードの斜視図である。窓ガラスの外側の被写体が人間や動物など移動する被写体である場合、窓ガラス面とカメラの光軸の交点における小さい方の角度が仮に最大で45度の設定で制作したレンズフードを例にした場合、45度から90度の範囲内であれば、移動するものを追跡しながら、斜めの角度から次第に垂直角度へ、もしくはその逆の垂直角度から次第に斜めへと角度を移動させながら撮像することも可能となる。  FIG. 6 is a perspective view of the lens hood in a state where the optical axis angle of the camera is set to a vertical angle by utilizing the expansion and contraction characteristics of the lens hood of FIG. When the subject outside the window glass is a moving subject such as a human being or an animal, the lens hood was created with the smaller angle at the intersection of the window glass surface and the optical axis of the camera set to a maximum of 45 degrees. In this case, if it is within the range of 45 degrees to 90 degrees, the moving object is tracked and imaged while gradually moving from an oblique angle to a vertical angle or vice versa. Is also possible.

図7は、窓ガラス面とカメラの光軸の交点における小さい方の角度が小さければ小さい程、仮に10度から30度などである場合に、カメラの光軸線と窓ガラス面との交点までの光軸線の距離が長くなり、フード面3b、3e、3gによるケラレが発生しやすくなるため、開口部2を長台形状に変更し、ケラレを防止する措置を講じたレンズフードの斜視図である。  7 shows that the smaller the angle at the intersection of the window glass surface and the optical axis of the camera, the smaller the angle between the optical axis of the camera and the window glass surface when the angle is 10 degrees to 30 degrees. It is a perspective view of a lens hood in which the distance of the optical axis becomes long and vignetting is likely to occur due to the hood surfaces 3b, 3e, and 3g. .

1 レンズフードのレンズ取り付け開口部1
2 レンズフードのガラス面に密着させる開口部2
3 レンズフード本体
3a フードの面
3b フードの面
3c 接合部のヒンジ
3d 接合部のヒンジ
3e フードの三角形状面
3f フードの三角形状面
3g フードの三角形状面
3h フードの三角形状面
3i フードのレンズ取り付け枠
3j フードのレンズ取り付け枠の締め付け用ネジ
3k フードのレンズ取り付け枠のレンズの突き出し防止係止部
4 アタッチメント
4a アタッチメントの厚み
4b アタッチメントの係止部
4c アタッチメントの切り欠き
5 ガラス面
6 カメラ
7a 伸縮素材で構成したフードの三角形状面
7b 伸縮素材で構成したフードの三角形状面
8 フードの3b面を長台形とした面
1 Lens hood lens opening 1
2 Opening 2 to be in close contact with the glass surface of the lens hood
3 Lens Hood Body 3a Hood Surface 3b Hood Surface 3c Joint Hinge 3d Joint Hinge 3e Triangle Surface 3f Hood Triangle Surface 3g Hood Triangle Surface 3h Hood Triangle Surface 3i Hood Lens Mounting frame 3j Screw for fixing lens mounting frame of hood 3k Lens protrusion prevention locking portion 4 of hood lens mounting frame Attachment 4a Attachment thickness 4b Attachment locking portion 4c Attachment notch 5 Glass surface 6 Camera 7a Expansion / contraction Triangular surface 7b of the hood composed of the material Triangular surface 8 of the hood composed of the stretchable material Surface that has the trapezoidal shape of the 3b surface of the hood

Claims (2)

カメラなどの撮像装置もしくは前記撮像装置のレンズに取り付けて使用するレンズフードであって、撮像装置もしくは前記撮像装置のレンズを取り付けするための開口部1と前記開口部より大きい長四辺形もしくは長台形の開口部2とを備え、ガラス越しに斜めの角度にある被写体を撮像する際に、開口部1に撮像装置もしくは前記撮像装置のレンズを取り付け、開口部2をガラスに密着させて撮像することにより、窓ガラスの内側が明るい時に窓ガラスに映った像が外側の被写体と共に撮像されることを防止することができることを特徴とする三角柱形状を有するレンズフード。  An imaging device such as a camera or a lens hood that is used by being attached to a lens of the imaging device, the opening 1 for attaching the imaging device or the lens of the imaging device, and a long quadrilateral or a long trapezoid larger than the opening When imaging a subject at an oblique angle through the glass, an imaging device or a lens of the imaging device is attached to the aperture 1 and the aperture 2 is brought into close contact with the glass when imaging. Therefore, when the inside of the window glass is bright, it is possible to prevent the image reflected on the window glass from being picked up together with the outer subject. 前記開口部2以外の四面の内、三角形の2面を伸縮素材もしくは折り曲げ可能な部材とし、他の2面の接合部はヒンジもしくは折り曲げ可能な部材とすることで、折り畳むことができることを特徴とする請求項1に記載のレンズフード。  Of the four surfaces other than the opening 2, two triangular surfaces can be expanded and contracted or bendable members, and the other two surfaces can be folded by using hinges or bendable members. The lens hood according to claim 1.
JP2010191422A 2010-08-12 2010-08-12 Lens hood Pending JP2012042902A (en)

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