JP2013020098A - Lens hood - Google Patents
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- JP2013020098A JP2013020098A JP2011153442A JP2011153442A JP2013020098A JP 2013020098 A JP2013020098 A JP 2013020098A JP 2011153442 A JP2011153442 A JP 2011153442A JP 2011153442 A JP2011153442 A JP 2011153442A JP 2013020098 A JP2013020098 A JP 2013020098A
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- lens
- lens hood
- optical filter
- hood
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Abstract
Description
本発明は、撮像装置に用いるレンズフードに関し、特に光学フィルタを装着可能なレンズフードに関するものである。 The present invention relates to a lens hood used in an imaging apparatus, and more particularly to a lens hood to which an optical filter can be attached.
デジタルカメラやビデオカメラ等の撮像装置は、映像の画角を広げたり、様々な映像効果を得るために、コンバージョンレンズや光学フィルタを装着することがある。 An imaging device such as a digital camera or a video camera may be equipped with a conversion lens or an optical filter in order to widen the angle of view of the image or obtain various image effects.
コンバージョンレンズと光学フィルタを同時に撮像装置に同時に装着可能とするためには、コンバージョンレンズの前端部内周面に雌ネジを形成し、光学フィルタ後端部外周面に形成した雄ネジを螺合するように構成することで可能となる。 In order to be able to attach the conversion lens and the optical filter to the image pickup device at the same time, a female screw is formed on the inner peripheral surface of the front end portion of the conversion lens, and a male screw formed on the outer peripheral surface of the rear end portion of the optical filter is screwed. It becomes possible by configuring.
しかしながら、光学フィルタ装着用の雌ネジを形成するためのスペースが必要となる為、コンバージョンレンズの外形が大型化し、光学フィルタを装着しないでコンバージョンレンズを使用する場合には不便である。 However, since a space for forming the female thread for mounting the optical filter is required, the outer shape of the conversion lens becomes large, which is inconvenient when the conversion lens is used without mounting the optical filter.
その解決手法として、光学フィルタ取付け用雌ネジを備えたフード飾りと、フード飾りの内側に、光学フィルタをフード飾りに取り付け可能な位置に円形状のリブを設けたフードピースとで構成したレンズフードが提案されている。（特許文献1参照）。 As a solution to this, a lens hood consisting of a hood ornament with a female thread for attaching an optical filter and a hood piece provided with a circular rib inside the hood ornament at a position where the optical filter can be attached to the hood ornament. Has been proposed. (See Patent Document 1).
この提案によりレンズフードに光学フィルタを装着することが可能となり、光学フィルタをコンバージョンレンズに装着したレンズフードに装着することで、コンバージョンレンズを小型に構成することが可能となる。 With this proposal, it becomes possible to attach an optical filter to the lens hood, and by attaching the optical filter to the lens hood attached to the conversion lens, the conversion lens can be made compact.
一方で、撮像装置の撮像レンズの傷や汚れを防止するために、レンズキャップを装着する場合がある。 On the other hand, in order to prevent scratches and dirt on the imaging lens of the imaging device, a lens cap may be attached.
しかしながら、特許文献１に開示されたように、レンズフードの前端部に光学フィルタを装着する構成では、光学フィルタを装着し撮影を行った後、レンズキャップを装着する場合には、レンズフードに装着した光学フィルタを取外した後に、レンズキャップ装着部にレンズキャップを装着する必要があり、操作に手間がかかる。 However, as disclosed in Patent Document 1, in the configuration in which the optical filter is attached to the front end portion of the lens hood, when the lens cap is attached after the optical filter is attached and photographed, the lens hood is attached. After removing the optical filter, it is necessary to attach the lens cap to the lens cap attaching portion, which takes time and effort.
また、円筒形状のレンズフードのみに適用可能でビデオカメラで使用される長方形状のレンズフードには適用できない為、レンズフードの形状に制約がある。 Further, since it can be applied only to a cylindrical lens hood and not a rectangular lens hood used in a video camera, there is a restriction on the shape of the lens hood.
そこで、本発明の目的は、簡単な構成で光学フィルタとレンズキャップを同時に装着可能で形状の制約の少ないレンズフードを提供することである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a lens hood that can be mounted with an optical filter and a lens cap at the same time with a simple configuration and has few shape restrictions.
上記目的を達成するために、本発明のレンズフードは、撮像装置の光学系の先端部に着脱可能なレンズフードであって、遮光板の内側にリブを有し、リブは光学フィルタとレンズキャップを同時に装着可能であることを特徴とする。 In order to achieve the above object, the lens hood of the present invention is a lens hood that can be attached to and detached from the tip of the optical system of the imaging apparatus, and has a rib inside the light shielding plate, and the rib includes an optical filter and a lens cap. Can be mounted at the same time.
本発明によれば、簡単な構成で光学フィルタとレンズキャップを同時にレンズフードに装着可能となり、光学フィルタをレンズフードに装着して撮影を行う場合の操作性が向上可能となる。さらに長方形状のレンズフードでも光学フィルタを装着可能となり、形状の制約の少ない光学フィルタを装着可能なレンズフードを提供可能となる。 According to the present invention, the optical filter and the lens cap can be simultaneously mounted on the lens hood with a simple configuration, and the operability when shooting with the optical filter mounted on the lens hood can be improved. Furthermore, an optical filter can be mounted even with a rectangular lens hood, and a lens hood that can be mounted with an optical filter with less shape restrictions can be provided.
［実施例１］
以下、本発明の第１の実施形態のレンズフードについて図を参照し説明する。
[Example 1]
The lens hood according to the first embodiment of the present invention will be described below with reference to the drawings.
図１は本発明の実施形態のビデオカメラ全体の構成を示す分解斜視図、図２は本発明の第１の実施形態のレンズフードの正面[a]および背面[b]図、図３は図２のＡ−Ａ断面図である。 1 is an exploded perspective view showing the entire configuration of a video camera according to an embodiment of the present invention, FIG. 2 is a front [a] and a rear [b] view of a lens hood according to the first embodiment of the present invention, and FIG. It is AA sectional drawing of 2.
図１、図２および図３において、１００はビデオカメラ、１０１はビデオカメラの撮像レンズ、１０２はビデオカメラの雌ネジ、２００はコンバージョンレンズ、２０１はコンバージョンレンズの鏡筒、２０２はレンズ、２０３は鏡筒２０１の雄ネジ、３００はレンズフード、３０１はレンズフードの開口部、３０２はレンズフードの勘合部、３０３は固定ネジ、３０４は固定部品、３０５はレンズフード３００の遮光板、３０６はレンズフード３００のリブ、３０６ａはリブ３０６の第１内周部、３０６ｂはリブ３０６の第２内周部、３０６ｃはリブ３０６の外周部、４００は光学フィルタ、５００はレンズキャップである。 1, 2, and 3, 100 is a video camera, 101 is an imaging lens of the video camera, 102 is a female screw of the video camera, 200 is a conversion lens, 201 is a lens barrel of the conversion lens, 202 is a lens, and 203 is Male screw of lens barrel 201, 300 is a lens hood, 301 is an opening of the lens hood, 302 is a fitting portion of the lens hood, 303 is a fixing screw, 304 is a fixing component, 305 is a light shielding plate of the lens hood 300, and 306 is a lens The rib of the hood 300, 306a is a first inner peripheral portion of the rib 306, 306b is a second inner peripheral portion of the rib 306, 306c is an outer peripheral portion of the rib 306, 400 is an optical filter, and 500 is a lens cap.
ビデオカメラ１００は前面側に撮像レンズ１０１があり、前端面の内周面に例えばコンバージョンレンズや光学フィルタ等の付属品を取付け可能な雌ネジ１０２が形成されている。 The video camera 100 has an imaging lens 101 on the front side, and a female screw 102 to which accessories such as a conversion lens and an optical filter can be attached is formed on the inner peripheral surface of the front end surface.
コンバージョンレンズ２００は、鏡筒２０１にレンズ２０２を含む複数の図示しないレンズを押え環で固定し構成されており、鏡筒２０１の後端部の外周面に雄ネジ２０３が形成され、ビデオカメラ１００の雌ネジ１０２に螺合されるようになっている。 The conversion lens 200 is configured by fixing a plurality of lenses (not shown) including the lens 202 to the lens barrel 201 with a presser ring, and a male screw 203 is formed on the outer peripheral surface of the rear end portion of the lens barrel 201. The female screw 102 is screwed together.
レンズフード３００は、略長方形状のレンズフードであって、中央に略長方形状の開口部３０１が形成され、さらにコンバージョンレンズ２００の前面側外周に勘合するように勘合部３０２が形成されている。この勘合部３０２をコンバージョンレンズ２００の前面側外周に勘合させ、固定ネジ３０３をねじ込むことで、固定部品３０４が突出しレンズフード３００をコンバージョンレンズ２００に固定する。 The lens hood 300 is a substantially rectangular lens hood. A substantially rectangular opening 301 is formed at the center, and a fitting portion 302 is formed so as to be fitted to the outer periphery on the front side of the conversion lens 200. The fitting portion 302 is fitted to the outer periphery on the front side of the conversion lens 200 and the fixing screw 303 is screwed in, so that the fixing component 304 protrudes and the lens hood 300 is fixed to the conversion lens 200.
レンズフード３００の遮光板３０５は、コンバージョンレンズ２００にレンズフード３００を装着した状態で、コンバージョンレンズ２００への入射光を遮りフレアの発生を防止するように全周にわたって形成されている。 The light shielding plate 305 of the lens hood 300 is formed over the entire circumference so as to block the incident light to the conversion lens 200 and prevent the occurrence of flare in a state where the lens hood 300 is attached to the conversion lens 200.
遮光板３０５の内側には、開口部３０１の上下に１対のリブ３０６が第１内周部３０６ａ、第２内周部３０６ｂおよび外周部３０６ｃを有するように円弧状に形成され、第１内周部３０６ａには雌ネジが形成される。 Inside the light shielding plate 305, a pair of ribs 306 are formed in an arc shape so as to have a first inner peripheral portion 306a, a second inner peripheral portion 306b, and an outer peripheral portion 306c above and below the opening 301. A female screw is formed on the peripheral portion 306a.
次に図４、図５を用いて本発明の第１の実施形態のレンズフードと光学フィルタおよびレンズキャップの装着関係を説明する。 Next, the mounting relationship between the lens hood, the optical filter, and the lens cap according to the first embodiment of the present invention will be described with reference to FIGS.
図４は本発明の第１の実施形態のレンズフードと光学フィルタおよびレンズキャップの装着関係を示す分解斜視図、図５は本発明の第１の実施形態のレンズフードに光学フィルタとレンズキャップを装着した時の断面図である。 FIG. 4 is an exploded perspective view showing the mounting relationship between the lens hood, the optical filter, and the lens cap according to the first embodiment of the present invention. FIG. 5 shows the optical filter and the lens cap attached to the lens hood according to the first embodiment of the present invention. It is sectional drawing when mounting | wearing.
図４および図５において、４０１は光学フィルタ４００の雄ネジ、５０１はレンズキャップ５００の側壁、５０２は凸部である。 4 and 5, 401 is an external thread of the optical filter 400, 501 is a side wall of the lens cap 500, and 502 is a convex portion.
光学フィルタ４００は、後端部の外周面に雄ネジ４０１が形成され、前述したレンズフード３００の第１内周部３０６ａに形成された雌ネジに螺合されるようになっている。 The optical filter 400 has a male screw 401 formed on the outer peripheral surface of the rear end portion thereof, and is screwed into the female screw formed on the first inner peripheral portion 306a of the lens hood 300 described above.
レンズフード３００の第２内周部３０６ｂは、第１内周部３０６ａより大きい径で形成され、光学フィルタ４００の雄ネジ４０１を第１内周部３０６ａに形成された雌ネジに螺合したときに、光学フィルタ４００が当接しないように形成されている。 The second inner peripheral portion 306b of the lens hood 300 is formed with a larger diameter than the first inner peripheral portion 306a, and when the male screw 401 of the optical filter 400 is screwed into the female screw formed on the first inner peripheral portion 306a. In addition, the optical filter 400 is formed so as not to contact.
レンズキャップ５００は、例えばポリプロピレンといった弾性を有する材料で形成され、円周状に側壁５０１を備えている。この側壁５０１は、内周面に１対の凸部５０２が形成され、レンズキャップ５００は凸部５０２がレンズフードのリブ３０５の外周部３０６ｃに当接し、側壁５０１が弾性的に変形した状態でレンズフードのリブ３０５に装着される。 The lens cap 500 is formed of an elastic material such as polypropylene, and includes a side wall 501 in a circumferential shape. The side wall 501 has a pair of convex portions 502 formed on the inner peripheral surface, and the lens cap 500 is in a state where the convex portions 502 abut against the outer peripheral portion 306c of the rib 305 of the lens hood and the side wall 501 is elastically deformed. Attached to the rib 305 of the lens hood.
［実施例２］
以下、図６および図７を参照して、本発明の第２の実施形態のレンズフードについて説明する。
[Example 2]
Hereinafter, the lens hood of the second embodiment of the present invention will be described with reference to FIGS. 6 and 7.
図６は本発明の第２の実施形態のレンズフードと光学フィルタおよびレンズキャップの装着関係を示す分解斜視図、図７は本発明の第２の実施形態のレンズフードに光学フィルタとレンズキャップを装着した時の断面図である。 FIG. 6 is an exploded perspective view showing the mounting relationship between the lens hood, the optical filter, and the lens cap according to the second embodiment of the present invention, and FIG. 7 shows the optical filter and the lens cap attached to the lens hood according to the second embodiment of the present invention. It is sectional drawing when mounting | wearing.
図６および図７において、３１０はレンズフード、３１１はレンズフード３００の開口部、３１６はレンズフード３１０のリブ、３１６ａはリブ３１６の第１内周部、３１６ｂはリブ３１６の第２内周部、３１７は係止爪、５１０はレンズキャップ、５１１はレンズキャップ５１０の側壁、５１２は係止凹部である。 6 and 7, 310 is a lens hood, 311 is an opening of the lens hood 300, 316 is a rib of the lens hood 310, 316a is a first inner peripheral portion of the rib 316, and 316b is a second inner peripheral portion of the rib 316. Reference numeral 317 denotes a locking claw, 510 denotes a lens cap, 511 denotes a side wall of the lens cap 510, and 512 denotes a locking recess.
レンズフード３１０は、開口部３１１の上下に１対のリブ３１６が第１内周部３１６ａ、第２内周部３１６ｂを有するように円弧状に形成され、第１の内周部３１６ａには雌ネジが形成されている。 The lens hood 310 is formed in an arc shape so that a pair of ribs 316 have a first inner peripheral portion 316a and a second inner peripheral portion 316b above and below the opening 311. The first inner peripheral portion 316a has a female Screws are formed.
第２の内周部３１６ｂは、係止爪３１７が一体的に形成されている。 A locking claw 317 is integrally formed on the second inner peripheral portion 316b.
光学フィルタ４００は、後端部の外周面に雄ネジ４０１が形成され、レンズフード３００の第１内周部３１６ａに形成された雌ネジに螺合されるようになっている。 The optical filter 400 has a male screw 401 formed on the outer peripheral surface of the rear end portion thereof, and is screwed into a female screw formed on the first inner peripheral portion 316 a of the lens hood 300.
レンズキャップ５１０は、円周状に側壁５０１を備えている。レンズキャプ５１０の側壁５０１の外周面にはレンズフード３００のリブ３１６に形成された係止爪３１７に対応する位置に係止凹部５１２が形成されており、係止凹部５１２とレンズフードの係止爪３１７を勘合させることでレンズキャップ５１０がレンズフードのリブ３１５に装着される。 The lens cap 510 has a side wall 501 in a circumferential shape. A locking recess 512 is formed on the outer peripheral surface of the side wall 501 of the lens cap 510 at a position corresponding to the locking claw 317 formed on the rib 316 of the lens hood 300, and the locking recess 512 and the lens hood are locked. By fitting the claws 317, the lens cap 510 is attached to the rib 315 of the lens hood.
以上、説明した構成にすることで、略長方形状のレンズフードに光学フィルタとレンズキャップを同時に装着することが可能となる。 With the configuration described above, the optical filter and the lens cap can be simultaneously attached to the substantially rectangular lens hood.
１００‥‥ビデオカメラ
２００‥‥コンバージョンレンズ
３００、３１０‥‥レンズフード
３０５‥‥レンズフードの遮光板
３０６、３１６‥‥レンズフードのリブ
３０６ａ、３１６ａ‥‥リブの第１内周部
３０６ｂ、３１６ｂ‥‥リブの第２内周部
３０６ｃ‥‥リブの外周部
４００‥‥光学フィルタ
５００‥‥レンズキャップ
100 Video camera 200 Conversion lens 300, 310 Lens hood 305 Lens hood shading plate 306, 316 Lens hood rib 306a, 316a Rib first inner periphery 306b, 316b Rib second inner periphery 306c Rib outer periphery 400 Optical filter 500 Lens cap
Claims (5)
遮光板の内側にリブを有し、
前記リブは光学フィルタとレンズキャップを同時に装着可能である
ことを特徴とするレンズフード。 A lens hood that can be attached to and detached from the tip of the optical system of the imaging device,
Have ribs inside the shading plate,
An optical hood and a lens cap can be attached to the rib at the same time.
前記リブは前記開口部の長辺の外側に配置されている
ことを特徴とする請求項１に記載のレンズフード。 The lens hood has a rectangular opening,
The lens hood according to claim 1, wherein the rib is disposed outside a long side of the opening.
前記リブの外周部にレンズキャップを装着可能である
ことを特徴とする請求項１又は請求項２に記載のレンズフード。 An optical filter can be attached to the inner periphery of the rib,
The lens hood according to claim 1, wherein a lens cap can be attached to an outer peripheral portion of the rib.
前記第１の内周部に光学フィルタを装着可能で、
前記第２の内周部にレンズキャップを装着可能である
ことを特徴とする請求項１又は請求項２に記載のレンズフード。 The rib has a first inner peripheral portion and a second inner peripheral portion,
An optical filter can be attached to the first inner periphery,
The lens hood according to claim 1, wherein a lens cap can be attached to the second inner peripheral portion.
ことを特徴とする請求項１乃至請求項４の何れか１項に記載のレンズフード。
The lens hood according to any one of claims 1 to 4, wherein the optical system is a conversion lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011153442A JP2013020098A (en) | 2011-07-12 | 2011-07-12 | Lens hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011153442A JP2013020098A (en) | 2011-07-12 | 2011-07-12 | Lens hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2013020098A true JP2013020098A (en) | 2013-01-31 |
Family
ID=47691588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011153442A Withdrawn JP2013020098A (en) | 2011-07-12 | 2011-07-12 | Lens hood |
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| Country | Link |
|---|---|
| JP (1) | JP2013020098A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9285659B2 (en) | 2013-02-21 | 2016-03-15 | Canon Kabushiki Kaisha | Optical accessory adapter |
-
2011
- 2011-07-12 JP JP2011153442A patent/JP2013020098A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9285659B2 (en) | 2013-02-21 | 2016-03-15 | Canon Kabushiki Kaisha | Optical accessory adapter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20141007 |