JP2007225719A - Light quantity adjusting apparatus for camera - Google Patents

Light quantity adjusting apparatus for camera Download PDF

Info

Publication number
JP2007225719A
JP2007225719A JP2006044282A JP2006044282A JP2007225719A JP 2007225719 A JP2007225719 A JP 2007225719A JP 2006044282 A JP2006044282 A JP 2006044282A JP 2006044282 A JP2006044282 A JP 2006044282A JP 2007225719 A JP2007225719 A JP 2007225719A
Authority
JP
Japan
Prior art keywords
filter
blade
optical filter
diaphragm blade
camera
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
Application number
JP2006044282A
Other languages
Japanese (ja)
Other versions
JP4912693B2 (en
Inventor
Masakazu Hanashima
正和 花島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Precision Corp
Original Assignee
Nidec Copal Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nidec Copal Corp filed Critical Nidec Copal Corp
Priority to JP2006044282A priority Critical patent/JP4912693B2/en
Publication of JP2007225719A publication Critical patent/JP2007225719A/en
Application granted granted Critical
Publication of JP4912693B2 publication Critical patent/JP4912693B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Diaphragms For Cameras (AREA)
  • Blocking Light For Cameras (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To make an apparatus small in size and thin in thickness by reducing an area used for an ND filter and to accurately fix an ND filter to a sector in a light quantity adjusting apparatus for a camera bnin which an optical filter is fixed to the sector. <P>SOLUTION: When injection-molding the sector 20 for adjusting the light quantity by covering an aperture part 31 to be rotated with a supporting hole 21 as a center with a resin material, the ND filter 10 and the sector 20 are integrally molded by means of an insert-molding on the outer peripheral end face 11 of the ND filter 10 for adjusting the light quantity, thereby using nearly the entire surface area of the ND filter 10 in order to adjust the light quantity. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、デジタルカメラ等に適用されて光量の調整を行うカメラ用光量調整装置に関し、特に、絞り羽根あるいは絞り兼用シャッタ羽根等の羽根部材に対して光量を調整する光学フィルタ（ＮＤフィルタ）を固定したカメラ用光量調整装置に関する。   The present invention relates to a light amount adjustment device for a camera that is applied to a digital camera or the like and adjusts a light amount, and in particular, an optical filter (ND filter) that adjusts the light amount with respect to a blade member such as a diaphragm blade or a diaphragm blade. The present invention relates to a fixed light amount adjusting device for a camera.

従来より、プレス成型等により形成された絞り羽根に対して、光学フィルタ（ＮＤフィルタ）を固定するにあたり、光学フィルタには絞り羽根と重なる部分が形成され、一部に接着剤溜まり用の凹部を形成し、この凹部内に接着剤を溜めて、光学フィルタを絞り羽根に貼着するものが知られている（例えば、実開昭６０−１３５７２９号公報参照）。
また、絞り羽根に対して、光学フィルタ（ＮＤフィルタ）を位置決め固定するにあたり、光学フィルタには絞り羽根と重なる部分が形成され、一部に固定用孔と位置決め孔を形成し、絞り羽根の固定用突起と位置決め突起の協働によって、光学フィルタを絞り羽根に位置決めするとともに固定するものが知られている（例えば、特開２００２−３６５６９３号公報参照）。 Conventionally, when fixing an optical filter (ND filter) to a diaphragm blade formed by press molding or the like, a portion overlapping the diaphragm blade is formed in the optical filter, and a concave portion for storing an adhesive is formed in a part. It is known that an adhesive is formed in the recess and an optical filter is adhered to the diaphragm blade (see, for example, Japanese Utility Model Laid-Open No. 60-135729).
Further, when positioning and fixing the optical filter (ND filter) with respect to the diaphragm blade, the optical filter is formed with a portion that overlaps the diaphragm blade, and a fixing hole and a positioning hole are formed in part to fix the diaphragm blade. There is known one that positions and fixes an optical filter on a diaphragm blade by cooperation of a projection for positioning and a positioning projection (see, for example, JP-A-2002-365893).

実開昭６０−１３５７２９号公報Japanese Utility Model Publication No. 60-135729 特開２００２−３６５６９３号公報JP 2002-365893 A

しかしながら、従来の構成においては、上記特許文献１では接着剤を用いて絞り羽根に光学フィルタを固定するので、接着作業に際して、接着剤が糸状に伸びて絞り羽根の開口部近傍に付着し、あるいは、接着剤溜まりからはみ出た接着剤が他の領域に付着する等の問題があり、接着部の周囲に比較的大きな余裕代を設けて広い面積で両者を重ね合わす必要があった。そのため、光学フィルタは、絞り羽根の開口に対して大きく形成する必要があった。また、接着剤が固化する前に光学フィルタが動いてしまうと、位置ずれ、浮き等の取付け不良となる問題があった。また、治具を用いて両者の位置合わせを行う必要があった。上記特許文献２では光学フィルタを絞り羽根に位置決めしつつ固定するために、少なくとも２箇所の突起部並びに突起部に対応する孔部を絞り羽根と光学フィルタの重ね合わせた部分に設置しており、そのため、光学フィルタは、絞り羽根の開口に対して大きく形成する必要があった。   However, in the conventional configuration, since the optical filter is fixed to the diaphragm blade using the adhesive in the above-mentioned Patent Document 1, the adhesive extends in a string shape and adheres to the vicinity of the aperture of the diaphragm blade during the bonding operation, or There is a problem that the adhesive protruding from the adhesive reservoir adheres to other regions, and it is necessary to provide a relatively large margin around the bonded portion and to superimpose them in a wide area. For this reason, the optical filter needs to be formed larger than the aperture of the diaphragm blade. Further, if the optical filter is moved before the adhesive is solidified, there is a problem that mounting failure such as displacement or floating occurs. Moreover, it was necessary to align both using a jig | tool. In Patent Document 2, in order to position and fix the optical filter on the diaphragm blade, at least two protrusions and holes corresponding to the protrusions are installed in the overlapped portion of the diaphragm blade and the optical filter. For this reason, the optical filter needs to be formed larger than the aperture of the diaphragm blade.

さらに、近年、光学フィルタの厚さが薄くなってきており、光学フィルタが一箇所で固定されている場合では、絞り羽根駆動時、外的振動、温度変化等によって固定されていない部分が浮いてしまう恐れがある。   Furthermore, in recent years, the thickness of the optical filter has been reduced, and when the optical filter is fixed at one place, when the diaphragm blade is driven, a portion that is not fixed is floated due to external vibration, temperature change, etc. There is a risk.

本発明は、上記の点に鑑みてなされたものであり、その目的とするところは、光学フィルタの使用面積を削減して、装置の小型化、薄型化を図ると共に、光学フィルタを羽根部材へ正確に固定できるカメラ用光量調整装置を提供することにある。   The present invention has been made in view of the above points, and an object of the present invention is to reduce the use area of the optical filter to reduce the size and thickness of the apparatus, and to convert the optical filter to the blade member. An object of the present invention is to provide a light amount adjusting device for a camera that can be fixed accurately.

本発明のカメラ用光量調整装置は、光学フィルタが固定される羽根部材によって光量を調整するカメラ用光量調整装置であって、上記羽根部材は、樹脂材からなり、且つ光学フィルタの外周端面に樹脂材を成型することにより一体的に形成される、ことを特徴としている。この構成によれば、羽根部材と光学フィルタを接着固定するための両者の重ね合わせが必要なくなり、光学フィルタは、羽根部材の開口と同様の大きさであれば良いので、光学フィルタの使用面積を削減することができる。また、光学フィルタに羽根部材を金型で一体成型するので、光学フィルタを取り付ける際の不良を防止できると共に、羽根部材と光学フィルタを正確に固定できる。   A camera light amount adjusting device according to the present invention is a camera light amount adjusting device that adjusts a light amount by a blade member to which an optical filter is fixed. The blade member is made of a resin material, and a resin is provided on an outer peripheral end surface of the optical filter. It is characterized by being formed integrally by molding a material. According to this configuration, it is not necessary to overlap the blade member and the optical filter for bonding and fixing, and the optical filter only needs to have the same size as the opening of the blade member. Can be reduced. In addition, since the blade member is integrally formed with the optical filter with a mold, it is possible to prevent defects when the optical filter is attached and to accurately fix the blade member and the optical filter.

上記構成において、羽根部材は、光学フィルタをインサート成型することにより形成されることを特徴とする。この構成によれば、光学フィルタを金型内に装填し、羽根部材を成型するので、羽根部材と光学フィルタの相対的な位置を金型によって位置決めでき、取り付け作業による不良を防止できると共に、羽根部材と光学フィルタを正確に固定できる。   In the above configuration, the blade member is formed by insert molding of an optical filter. According to this configuration, since the optical filter is loaded into the mold and the blade member is molded, the relative position of the blade member and the optical filter can be positioned by the mold, and defects due to the mounting operation can be prevented. The member and the optical filter can be accurately fixed.

上記構成において、羽根部材は、光学フィルタが羽根部材から突出しないことを特徴とする。この構成によれば、羽根部材が作動したとき、光学フィルタに基板等との擦れによる傷が付くことを確実に防止できる。   In the above configuration, the blade member is characterized in that the optical filter does not protrude from the blade member. According to this configuration, it is possible to reliably prevent the optical filter from being damaged by rubbing with the substrate or the like when the blade member is operated.

上記構成において、羽根部材は、光学フィルタの外周縁部に張出部が設けられていることを特徴とする。この構成によれば、成型後の光学フィルタの反り及び羽根部材からの浮きが防止され、羽根部材に光学フィルタを確実に固定できる。羽根部材が動作したとき、光学フィルタに基板等との擦れによる傷が付くことを防止できる。   The said structure WHEREIN: The blade member is provided with the overhang | projection part in the outer periphery part of the optical filter, It is characterized by the above-mentioned. According to this configuration, warpage of the optical filter after molding and floating from the blade member are prevented, and the optical filter can be reliably fixed to the blade member. When the blade member is operated, it is possible to prevent the optical filter from being damaged by rubbing with the substrate or the like.

光学フィルタは、絞り羽根の開口と同様の大きさであれば良いので、両者の重ね合わせが必要なく、光学フィルタの使用面積を削減することができ、装置の小型化、薄型化が可能である。さらに、金型で光学フィルタと絞り羽根を固定するので、光学フィルタの取付け不良を防止できると共に、両者を正確且つ確実に固定できる。   Since the optical filter only needs to have the same size as the aperture of the aperture blade, it is not necessary to superimpose both of them, and the use area of the optical filter can be reduced, and the apparatus can be reduced in size and thickness. . Furthermore, since the optical filter and the diaphragm blade are fixed by the mold, it is possible to prevent the mounting failure of the optical filter and to fix both accurately and reliably.

以下、本発明の最良の実施形態について、図面参照しつつ説明する。図１は、本発明に係るカメラ用光量調整装置の一実施例を示す図である。ここで、図１（ｂ）は、図１（ａ）の破線で切断してＡから見た断面図である。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a light amount adjusting device for a camera according to the present invention. Here, FIG.1 (b) is sectional drawing cut | disconnected by the broken line of Fig.1 (a) and seen from A. FIG.

図１に示すように、本実施形態のカメラ用光量調整装置は、光学フィルタとしてのＮＤ（ニュートラル デンシティー）フィルタ１０と、羽根部材としての露光用の開口部を絞る絞り羽根２０とを備えている。ＮＤフィルタ１０は、略円板状で、約０．１ミリメートル程の厚さに形成されており、光の色を変化させることなく光の強度すなわち光量を減少させる（調整する）ものである。ＮＤフィルタ１０は濃度フィルタとも称されている。絞り羽根２０は、約０．１ミリメートル程の厚さに形成されたものであり、基板の支持軸等に回動自在に軸支される支持孔２１と、駆動源の駆動ピン等が挿入される円弧状の長孔２２が形成される。絞り羽根２０は、樹脂材料を射出成形したものであり、ＮＤフィルタ１０をインサート成形することにより、ＮＤフィルタ１０と絞り羽根２０とが一体的に形成される。そして、絞り羽根２０と一体的に形成されたＮＤフィルタ１０は、カメラ等に組み込むことにより、露光用の開口を通過する光量を調整して、光の回析現象等を防止する役割をなす。   As shown in FIG. 1, the camera light amount adjusting device of the present embodiment includes an ND (neutral density) filter 10 as an optical filter, and a diaphragm blade 20 that narrows an opening for exposure as a blade member. Yes. The ND filter 10 has a substantially disc shape and is formed with a thickness of about 0.1 millimeter, and reduces (adjusts) the intensity of light, that is, the amount of light without changing the color of the light. The ND filter 10 is also called a density filter. The diaphragm blade 20 is formed to a thickness of about 0.1 mm, and is inserted with a support hole 21 pivotally supported by a support shaft of the substrate and a drive pin of a drive source. A circular arc-shaped long hole 22 is formed. The diaphragm blade 20 is formed by injection molding of a resin material, and the ND filter 10 and the diaphragm blade 20 are integrally formed by insert molding the ND filter 10. The ND filter 10 formed integrally with the diaphragm blade 20 is incorporated in a camera or the like, thereby adjusting the amount of light passing through the opening for exposure and preventing the light diffraction phenomenon and the like.

図１（ａ）及び図１（ｂ）のように、ＮＤフィルタ１０はＮＤフィルタ１０の外周端面１１で、且つ全周に及んで、光の漏れの無いように隙間無く絞り羽根２０が形成される。ＮＤフィルタ１０の外周端面１１に絞り羽根２０を形成することにより、ＮＤフィルタ１０の全面の領域を光の回析現象を防止することに使用でき、無駄が無い。通常ＮＤフィルタは大きな一枚のシート状から所望の大きさに型抜きするものであり、ＮＤフィルタの面積が小さいほど一枚のシート状からの抜き数は多く取れることになり、製造コストの削減になる。さらに、図１（ｂ）に示すように、絞り羽根２０の厚さはＮＤフィルタ１０の厚さと同一に形成され、その表面は均一な平面になっている。   As shown in FIG. 1A and FIG. 1B, the ND filter 10 is formed on the outer peripheral end face 11 of the ND filter 10 over the entire circumference, and the diaphragm blades 20 are formed without gaps so as not to leak light. The By forming the diaphragm blades 20 on the outer peripheral end face 11 of the ND filter 10, the entire area of the ND filter 10 can be used for preventing the light diffraction phenomenon, and there is no waste. Usually, an ND filter is a die cut from a large sheet to a desired size, and the smaller the area of the ND filter, the larger the number of sheets that can be removed from the sheet, reducing the manufacturing cost. become. Further, as shown in FIG. 1B, the diaphragm blade 20 is formed to have the same thickness as the ND filter 10, and the surface thereof is a uniform plane.

ここで、ＮＤフィルタ１０を絞り羽根２０に一体化するインサート成形について説明する。絞り羽根２０を射出成形する金型は、略円板状のＮＤフィルタ１０を金型内の定位置に位置決めされて装填できるように形成され、ＮＤフィルタ１０を装填後、金型を組み立てて樹脂材を金型内に射出する。このとき金型の温度は約１００度であって、射出する樹脂材料はそれより高い。そして、金型の温度が下がって樹脂材料が凝固すれば、ＮＤフィルタ１０の外周端面１１が羽根部材２０に一体化される。つまり、ＮＤフィルタ１０の外周端面１１に羽根部材２０が成形される。このように、ＮＤフィルタ１０と絞り羽根２０は、絞り羽根２０を成形する金型で一体成形されるので、絞り羽根２０に対してＮＤフィルタ１０を正確な位置に一体化でき、さらに一体化の際に絞り羽根２０に対してＮＤフィルタ１０の位置がずれることが無い。   Here, insert molding in which the ND filter 10 is integrated with the aperture blade 20 will be described. The mold for injection-molding the diaphragm blade 20 is formed so that the substantially disk-shaped ND filter 10 can be positioned and loaded at a fixed position in the mold, and after the ND filter 10 is loaded, the mold is assembled to form a resin. The material is injected into the mold. At this time, the temperature of the mold is about 100 degrees, and the resin material to be injected is higher than that. When the temperature of the mold is lowered and the resin material is solidified, the outer peripheral end surface 11 of the ND filter 10 is integrated with the blade member 20. That is, the blade member 20 is formed on the outer peripheral end surface 11 of the ND filter 10. As described above, the ND filter 10 and the diaphragm blade 20 are integrally formed with a mold for molding the diaphragm blade 20, so that the ND filter 10 can be integrated at an accurate position with respect to the diaphragm blade 20, and further integrated. At this time, the position of the ND filter 10 does not shift with respect to the aperture blade 20.

図２は、図１に示すカメラ用光量調整装置を基板３０に取り付けた状態を示す図である。基板３０は、基板３０の略中央部に露光用の開口部３１、駆動源の駆動ピン等が挿通される円弧状の長孔３２が形成される。さらに、支持軸３３、規制突部３４、規制突部３５が突設され、支持軸３３には絞り羽根２０の支持孔２１が挿入される。絞り羽根２０は、基板３０の面上を摺動するように、支持軸３３を中心として規制突部３４と規制突部３５の間を回動し、絞り羽根２０の側面２３が規制突部３５に当接したとき、ＮＤフィルタ１０が開口部３１の全体を覆うようにされている。   FIG. 2 is a diagram showing a state in which the camera light amount adjusting device shown in FIG. The substrate 30 is formed with an opening 31 for exposure and an arc-shaped long hole 32 through which a drive pin of a drive source and the like are inserted substantially in the center of the substrate 30. Further, a support shaft 33, a regulation projection 34, and a regulation projection 35 are projected, and the support hole 21 of the diaphragm blade 20 is inserted into the support shaft 33. The diaphragm blade 20 rotates between the restriction projection 34 and the regulation projection 35 around the support shaft 33 so as to slide on the surface of the substrate 30, and the side surface 23 of the diaphragm blade 20 is regulated by the regulation projection 35. The ND filter 10 is configured to cover the entire opening 31 when it comes into contact.

図３は、図２（ａ）に示す基板３０の裏側を紙面裏側から見た状態を示す図であって、駆動源であるアイリスモータ４０を示す。アイリスモータ４０は、磁性体からなるヨーク４１、ヨーク４１に巻回されるコイル４２、ヨーク４１の間に介在するマグネットアーム４３で構成され、これらは図示しないブラケットに支持される。ヨーク４１は、磁性体をＵ字状に形成されおり、Ｕ字状の各端部４５、４６は、間隔をあけて対向している。マグネットアーム４３は、基部である回動軸４７側がＮ極及びＳ極に着磁されたマグネットになっており、端部側に図３の紙面裏面に向かって駆動ピン４４が突設されている。そして、駆動ピン４４は、基板３０の長孔３２を挿通し、絞り羽根２０の長孔２２に係合されている。   FIG. 3 is a diagram showing a state where the back side of the substrate 30 shown in FIG. 2A is viewed from the back side of the drawing, and shows an iris motor 40 as a drive source. The iris motor 40 includes a yoke 41 made of a magnetic material, a coil 42 wound around the yoke 41, and a magnet arm 43 interposed between the yokes 41, and these are supported by a bracket (not shown). The yoke 41 is formed of a U-shaped magnetic body, and the U-shaped end portions 45 and 46 face each other with a gap therebetween. The magnet arm 43 is a magnet that is magnetized with an N pole and an S pole on the side of the rotation shaft 47, and a drive pin 44 projects from the end of the magnet arm 43 toward the back side of the sheet of FIG. . The drive pin 44 is inserted into the long hole 32 of the substrate 30 and engaged with the long hole 22 of the diaphragm blade 20.

図示しない外部からコイル４２に電圧を供給すると、ヨーク４１のＵ字状の各端部４５、４６は磁気化し、各端部４５、４６の間に介在するマグネットアーム４３のマグネットとの磁力により、マグネットアーム４３が回動軸４７を中心に回動する。そして、このマグネットアーム４３の回動によって、駆動ピン４４が長孔２２内を摺動し、絞り羽根２０が回動する。これにより、ＮＤフィルタ１０は、開口部３１を覆う位置と、開口部３１から退避した位置との間を移動可能となっている。   When a voltage is supplied to the coil 42 from the outside (not shown), the U-shaped end portions 45 and 46 of the yoke 41 are magnetized, and due to the magnetic force with the magnet of the magnet arm 43 interposed between the end portions 45 and 46, The magnet arm 43 rotates around the rotation shaft 47. As the magnet arm 43 rotates, the drive pin 44 slides in the long hole 22 and the diaphragm blade 20 rotates. Thereby, the ND filter 10 can move between a position covering the opening 31 and a position retracted from the opening 31.

前述の実施例では、ＮＤフィルタ１０と絞り羽根２０は均一な面を構成しているとしたが、絞り羽根２０の摺動する面からＮＤフィルタ１０が突出しなければ良い。また、ＮＤフィルタ１０の厚さは絞り羽根２０の厚さと同一としたが、絞り羽根２０の摺動する面からＮＤフィルタ１０が突出しなければ同一でなくとも良い。絞り羽根２０の摺動する面からＮＤフィルタ１０の面が少しでも窪んでいると好適である。   In the above-described embodiment, the ND filter 10 and the diaphragm blade 20 form a uniform surface. However, it is sufficient that the ND filter 10 does not protrude from the surface on which the diaphragm blade 20 slides. Further, although the thickness of the ND filter 10 is the same as the thickness of the diaphragm blade 20, it may not be the same as long as the ND filter 10 does not protrude from the sliding surface of the diaphragm blade 20. It is preferable that the surface of the ND filter 10 is slightly depressed from the surface on which the diaphragm blade 20 slides.

図４及び図５は、本発明に係るカメラ用光量調整装置の他の実施例を示すものである。前述の実施形態の光学フィルタとしてのＮＤフィルタと、羽根部材としての露光用の開口部を絞る絞り羽根を変更した以外は同様の構成をなすものであり、同一の構成については同一の符号を付して説明を省略する。ここで、図４（ｂ）は、図４（ａ）の破線で切断してＢから見た断面図である。   4 and 5 show another embodiment of the light amount adjusting device for a camera according to the present invention. The configuration is the same except that the ND filter as the optical filter of the above-described embodiment and the aperture blade that narrows the opening for exposure as the blade member are changed, and the same reference numeral is assigned to the same configuration. Therefore, the description is omitted. Here, FIG.4 (b) is sectional drawing cut | disconnected by the broken line of Fig.4 (a) and seen from B. FIG.

ＮＤフィルタ５０は、略円板状に形成される。絞り羽根６０は、約０．１ミリメートル程の厚さに形成されたものであり、ＮＤフィルタ５０の厚さよりも厚くなっている。絞り羽根６０は、樹脂材料を射出成形したものであり、ＮＤフィルタ５０をインサート成形することにより、ＮＤフィルタ５０と絞り羽根６０とが一体的に形成される。そして、絞り羽根６０と一体的に形成されたＮＤフィルタ５０は、カメラ等に組み込むことにより、露光用の開口を通過する光量を調整して、光の回析現象等を防止する役割をなす。   The ND filter 50 is formed in a substantially disc shape. The diaphragm blade 60 is formed to a thickness of about 0.1 millimeter, and is thicker than the thickness of the ND filter 50. The diaphragm blade 60 is formed by injection molding of a resin material, and the ND filter 50 and the diaphragm blade 60 are integrally formed by insert molding the ND filter 50. The ND filter 50 formed integrally with the aperture blade 60 is incorporated in a camera or the like, thereby adjusting the amount of light passing through the aperture for exposure and preventing the light diffraction phenomenon and the like.

図４（ｂ）に示すように、ＮＤフィルタ５０はＮＤフィルタ５０の外周端面５１に絞り羽根６０が形成され、絞り羽根６０はＮＤフィルタ５０の外周縁部の上下に張出部６１が延在している。さらに、略円板上のＮＤフィルタ５０の全周に及んで、光の漏れの無いように隙間無く絞り羽根６０が形成される。つまり、ＮＤフィルタ５０の外周縁部を絞り羽根６０の凹状部で挟んでいる状態にされる。このようにすることにより、ＮＤフィルタ５０が絞り羽根６０に強固に固定される。また、ＮＤフィルタ５０の略全面の領域を光の回析現象を防止することに使用でき、無駄が無い。通常ＮＤフィルタは大きな一枚のシート状から所望の大きさに型抜きするものであり、ＮＤフィルタの面積が小さいほど一枚のシート状からの抜き数は多く取れるので、製造コストの削減になる。   As shown in FIG. 4B, the ND filter 50 has a diaphragm blade 60 formed on the outer peripheral end surface 51 of the ND filter 50, and the diaphragm blade 60 has a protruding portion 61 extending above and below the outer peripheral edge of the ND filter 50. is doing. Further, the diaphragm blades 60 are formed without gaps over the entire circumference of the ND filter 50 on a substantially circular plate so as not to leak light. That is, the outer peripheral edge of the ND filter 50 is sandwiched between the concave portions of the aperture blade 60. By doing so, the ND filter 50 is firmly fixed to the diaphragm blade 60. Further, the almost entire area of the ND filter 50 can be used to prevent the light diffraction phenomenon, and there is no waste. Usually, the ND filter is a die cut from a large sheet to a desired size, and the smaller the area of the ND filter, the larger the number of punches from one sheet, so that the manufacturing cost can be reduced. .

図４（ｂ）に示すように、絞り羽根６０の厚さはＮＤフィルタ５０の厚さより厚く形成され、絞り羽根６０の表面は均一な平面にされている。このようにＮＤフィルタ５０をインサート成形した絞り羽根６０を、図２に示す基板３０に組み込むことにより、ＮＤフィルタ５０が基板３０に擦れて、擦り傷等が発生することを防止できる（図５参照）。   As shown in FIG. 4B, the diaphragm blade 60 is formed to be thicker than the ND filter 50, and the surface of the diaphragm blade 60 is a uniform plane. By incorporating the diaphragm blade 60 in which the ND filter 50 is insert-molded in this way into the substrate 30 shown in FIG. 2, it is possible to prevent the ND filter 50 from rubbing against the substrate 30 and causing scratches or the like (see FIG. 5). .

絞り羽根６０は、図４（ｂ）に示すようにＮＤフィルタ５０の上下両面の外周縁部に張出部６１を形成したが、どちらか片面側のみに設けても良い。また、絞り羽根６０は、略円板状の全周に亘って張出部６１を形成したが、一部のみでも良い（図１０参照）。   As shown in FIG. 4B, the diaphragm blade 60 is formed with the overhang portions 61 on the outer peripheral edge portions of the upper and lower surfaces of the ND filter 50, but may be provided only on one side. In addition, the diaphragm blade 60 has the protruding portion 61 formed over the entire circumference of a substantially disc shape, but only a part thereof may be used (see FIG. 10).

図６及び図７は、本発明に係るカメラ用光量調整装置の他の実施例を示すものである。前述の実施形態の光学フィルタとしてのＮＤフィルタと、羽根部材としての露光用の開口部を絞る絞り羽根を変更した以外は同様の構成をなすものであり、同一の構成については同一の符号を付して説明を省略する。ここで、図６（ｂ）は、図６（ａ）の破線で切断してＣから見た断面図である。   6 and 7 show another embodiment of the light amount adjusting device for a camera according to the present invention. The configuration is the same except that the ND filter as the optical filter of the above-described embodiment and the aperture blade that narrows the opening for exposure as the blade member are changed, and the same reference numeral is assigned to the same configuration. Therefore, the description is omitted. Here, FIG.6 (b) is sectional drawing cut | disconnected by the broken line of Fig.6 (a) and seen from C. FIG.

ＮＤフィルタ１０は、略円板状で、約０．１ミリメートル程の厚さに形成され、絞り羽根７０は、約０．１ミリメートル程の厚さに形成される。絞り羽根７０は、樹脂材料を射出成形したものであり、ＮＤフィルタ１０をインサート成形することにより、ＮＤフィルタ１０と絞り羽根７０とが一体的に形成される。そして、絞り羽根７０と一体的に形成されたＮＤフィルタ１０は、カメラ等に組み込むことにより、露光用の開口を通過する光量を調整して、光の回析現象等を防止する役割をなす。   The ND filter 10 has a substantially disk shape and is formed with a thickness of about 0.1 millimeter, and the diaphragm blade 70 is formed with a thickness of about 0.1 millimeter. The diaphragm blade 70 is formed by injection molding of a resin material, and the ND filter 10 and the diaphragm blade 70 are integrally formed by insert molding the ND filter 10. The ND filter 10 formed integrally with the aperture blade 70 is incorporated in a camera or the like, thereby adjusting the amount of light passing through the opening for exposure and preventing the light diffraction phenomenon and the like.

図６（ｂ）に示すように、ＮＤフィルタ１０の外周端面１１には全周に亘って絞り羽根７０が形成される。さらに、ＮＤフィルタ１０の主面の上下外周縁部には、ＮＤフィルタ１０の全周に亘って外周端面１１から中心部に向かって張り出した張出部としての上リブ７１、下リブ７２が形成される。つまり、ＮＤフィルタ１０の外周縁部を絞り羽根７０の凹状部で挟んでいる状態にされる。絞り羽根７０の上リブ７１、下リブ７２の部分は、絞り羽根７０の他の部分より厚みが厚くなっている。これにより、ＮＤフィルタ１０には光の漏れのないように隙間無く絞り羽根７０が形成されると共に、ＮＤフィルタ１０が絞り羽根７０に強固に固定される。そして、一部厚みの増した絞り羽根７０は強度がアップされる。また、ＮＤフィルタ１０の略全面の領域を光の回析現象を防止することに使用でき、無駄が無い。通常ＮＤフィルタは大きな一枚のシート状から所望の大きさに型抜きするものであり、ＮＤフィルタの面積が小さいほど一枚のシート状からの抜き数は多く取れるので、製造コストの削減になる。   As shown in FIG. 6B, the diaphragm blade 70 is formed on the outer peripheral end face 11 of the ND filter 10 over the entire circumference. Furthermore, an upper rib 71 and a lower rib 72 are formed on the upper and lower outer peripheral edges of the main surface of the ND filter 10 as projecting portions that project from the outer peripheral end surface 11 toward the center over the entire circumference of the ND filter 10. Is done. That is, the outer peripheral edge of the ND filter 10 is sandwiched between the concave portions of the aperture blade 70. The portions of the upper rib 71 and the lower rib 72 of the diaphragm blade 70 are thicker than the other portions of the diaphragm blade 70. Thereby, the diaphragm blade 70 is formed in the ND filter 10 without a gap so that light does not leak, and the ND filter 10 is firmly fixed to the diaphragm blade 70. The strength of the diaphragm blade 70 having a partially increased thickness is increased. Further, the almost entire area of the ND filter 10 can be used for preventing the light diffraction phenomenon, and there is no waste. Usually, the ND filter is a die cut from a large sheet to a desired size, and the smaller the area of the ND filter, the larger the number of punches from one sheet, so that the manufacturing cost can be reduced. .

下リブ７２の下端はＮＤフィルタ１０の主面と平行であって、表面が均一な平面にされている。このようにＮＤフィルタ５０をインサート成形した絞り羽根７０を、図２に示す基板３０に組み込むことにより、ＮＤフィルタ１０が基板３０に擦れて、擦り傷等が発生することを防止できる（図７参照）。   The lower end of the lower rib 72 is parallel to the main surface of the ND filter 10 and has a uniform surface. By incorporating the diaphragm blade 70 in which the ND filter 50 is insert-molded in this way into the substrate 30 shown in FIG. 2, it is possible to prevent the ND filter 10 from rubbing against the substrate 30 and causing scratches or the like (see FIG. 7). .

絞り羽根７０は、上リブ７１、下リブ７２を形成したが、どちらか一方のみを設けても良い（図８及び図９参照）。また、絞り羽根７０は、略円板状の全周に亘って張出部としてのリブ７１、７２を形成したが、一部のみでも良い。   The aperture blade 70 is formed with the upper rib 71 and the lower rib 72, but only one of them may be provided (see FIGS. 8 and 9). In addition, the diaphragm blade 70 is formed with ribs 71 and 72 as overhangs over the entire circumference of a substantially disk shape, but only a part thereof may be used.

本発明に係るカメラ用光量調整装置の一実施形態を示すものであり、（ａ）は平面図、（ｂ）は断面図である。BRIEF DESCRIPTION OF THE DRAWINGS One Embodiment of the light quantity adjustment device for cameras which concerns on this invention is shown, (a) is a top view, (b) is sectional drawing. 図１に示すカメラ用光量調整装置を基板に取り付けて絞り装置として構成した実施形態を示すものであり、（ａ）は平面図、（ｂ）は断面図である。1A and 1B show an embodiment in which the camera light amount adjusting device shown in FIG. 1 is attached to a substrate to constitute a diaphragm device, where FIG. 1A is a plan view and FIG. 1B is a sectional view. 図２に示す絞り装置の裏面を示す図である。It is a figure which shows the back surface of the aperture_diaphragm | restriction apparatus shown in FIG. 本発明に係るカメラ用光量調整装置の他の実施形態を示すものであり、（ａ）は平面図、（ｂ）は断面図である。2A and 2B show another embodiment of a light amount adjusting device for a camera according to the present invention, in which FIG. 図４に示すカメラ用光量調整装置を基板に取り付けて絞り装置として構成した実施形態を示す断面図である。It is sectional drawing which shows embodiment which attached the light quantity adjustment device for cameras shown in FIG. 4 to the board | substrate, and was comprised as a diaphragm | throttle device. 本発明に係るカメラ用光量調整装置のさらに他の実施形態を示すものであり、（ａ）は平面図、（ｂ）は断面図である。4A and 4B show still another embodiment of a camera light amount adjusting device according to the present invention, in which FIG. 図６に示すカメラ用光量調整装置を基板に取り付けて絞り装置として構成した実施形態を示す断面図である。It is sectional drawing which shows embodiment which attached the light quantity adjustment device for cameras shown in FIG. 6 to the board | substrate, and was comprised as a diaphragm | throttle device. 図６に示すカメラ用光量調整装置のさらに他の実施形態を示す断面図である。It is sectional drawing which shows other embodiment of the light quantity adjustment apparatus for cameras shown in FIG. 図６に示すカメラ用光量調整装置のさらに他の実施形態を示す断面図である。It is sectional drawing which shows other embodiment of the light quantity adjustment apparatus for cameras shown in FIG. 図４に示すカメラ用光量調整装置のさらに他の実施形態を示す平面図である。It is a top view which shows other embodiment of the light quantity adjustment apparatus for cameras shown in FIG.

符号の説明Explanation of symbols

１０，５０・・・ＮＤフィルタ（光学フィルタ）
２０，６０，７０・・・絞り羽根（羽根部材）
１１，５１・・・外周端面
６１・・・張出部
７１・・・上リブ（張出部）
７２・・・下リブ（張出部） 10, 50 ... ND filter (optical filter)
20, 60, 70 ... diaphragm blades (blade members)
11, 51 ... Outer peripheral end face 61 ... Overhang portion 71 ... Upper rib (overhang portion)
72 ... Lower rib (overhang)

Claims (4)

光学フィルタが固定される羽根部材によって光量を調整するカメラ用光量調整装置であって、
前記羽根部材は、樹脂材からなり、且つ前記光学フィルタの外周端面に樹脂材を成型することにより一体的に形成されることを特徴とするカメラ用光量調整装置。
A light amount adjusting device for a camera that adjusts a light amount by a blade member to which an optical filter is fixed
The light amount adjusting device for a camera, wherein the blade member is made of a resin material and is integrally formed by molding a resin material on an outer peripheral end face of the optical filter.
前記羽根部材は、前記光学フィルタをインサート成型することにより形成されることを特徴とする請求項１に記載のカメラ用光量調整装置。
The light amount adjusting device for a camera according to claim 1, wherein the blade member is formed by insert molding the optical filter.
前記羽根部材は、光学フィルタが羽根部材から突出していないことを特徴とする請求項２に記載のカメラ用光量調整装置。
The light amount adjusting device for a camera according to claim 2, wherein the blade member has an optical filter that does not protrude from the blade member.
前記羽根部材は、前記光学フィルタの外周縁部に張出部が設けられていることを特徴とする請求項２ないし請求項３に記載のカメラ用光量調整装置。
4. The camera light amount adjusting device according to claim 2, wherein the blade member is provided with a protruding portion at an outer peripheral edge portion of the optical filter. 5.
JP2006044282A 2006-02-21 2006-02-21 Light amount adjustment device for camera Expired - Fee Related JP4912693B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006044282A JP4912693B2 (en) 2006-02-21 2006-02-21 Light amount adjustment device for camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006044282A JP4912693B2 (en) 2006-02-21 2006-02-21 Light amount adjustment device for camera

Publications (2)

Publication Number Publication Date
JP2007225719A true JP2007225719A (en) 2007-09-06
JP4912693B2 JP4912693B2 (en) 2012-04-11

Family

ID=38547634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006044282A Expired - Fee Related JP4912693B2 (en) 2006-02-21 2006-02-21 Light amount adjustment device for camera

Country Status (1)

Country Link
JP (1) JP4912693B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010152085A (en) * 2008-12-25 2010-07-08 Olympus Corp Method for controlling light adjusting device and light adjusting device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09189935A (en) * 1996-01-09 1997-07-22 Canon Inc Light shielding device and camera with the same
JPH10162426A (en) * 1996-11-29 1998-06-19 Sony Corp Lens bobbin and its manufacture
JP2004103170A (en) * 2002-09-12 2004-04-02 Sanyo Electric Co Ltd Optical pickup
JP2005091656A (en) * 2003-09-17 2005-04-07 Nidec Copal Corp Blade driving device for camera

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09189935A (en) * 1996-01-09 1997-07-22 Canon Inc Light shielding device and camera with the same
JPH10162426A (en) * 1996-11-29 1998-06-19 Sony Corp Lens bobbin and its manufacture
JP2004103170A (en) * 2002-09-12 2004-04-02 Sanyo Electric Co Ltd Optical pickup
JP2005091656A (en) * 2003-09-17 2005-04-07 Nidec Copal Corp Blade driving device for camera

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010152085A (en) * 2008-12-25 2010-07-08 Olympus Corp Method for controlling light adjusting device and light adjusting device

Also Published As

Publication number Publication date
JP4912693B2 (en) 2012-04-11

Similar Documents

Publication Publication Date Title
US7156564B2 (en) Blade driving device for use in cameras
CN102466943B (en) Light amount adjusting device and camera head
KR900009961Y1 (en) Information recording disk having a unified structure
JP2008234736A (en) Motor with chucking device, and disk drive device mounting the motor
US7771132B2 (en) Shutter unit, shutter unit with built-in lens, and imaging apparatus
JP4845768B2 (en) Diaphragm blade, method of manufacturing the diaphragm blade, and light amount adjusting device including the diaphragm blade
JP4912693B2 (en) Light amount adjustment device for camera
JPS63117381A (en) Information storage medium
JP2006337780A (en) Light quantity control device
US8348528B2 (en) Blade drive device
US8540439B2 (en) Blade drive device
JP2008027540A (en) Manufacturing method of base plate of disk type recording device, base plate of disk type recording device, and disk type recording device
JP4035409B2 (en) RECORDING DISK DRIVE DEVICE, TURN TABLE USED FOR THE SAME, AND MANUFACTURING METHOD THEREOF
JP4901551B2 (en) Blade driving device and imaging device
JP2005195942A (en) Lens module and solid-state imaging device
US8353635B2 (en) Blade drive device
KR101082848B1 (en) Diaphragm device having optical filter
JP4347213B2 (en) Sector drive device
JPH0259717A (en) Laser unit
JP4823438B2 (en) Light amount adjustment device for camera
JP2004226804A (en) Lens unit
JP2006058500A (en) Attachment structure of sector and sector driving device for camera
JP2007025095A (en) Light quantity adjusting device, lens device and camera
JP2009014759A (en) Light amount regulating blade and light amount regulator
JP2020193686A (en) Damper member, linear actuator, and manufacturing method of damper member

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090223

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110930

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111011

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111129

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120110

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120118

R150 Certificate of patent or registration of utility model

Ref document number: 4912693

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150127

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees