JP2013011713A - Light quantity adjustment device and imaging apparatus including the same - Google Patents

Light quantity adjustment device and imaging apparatus including the same Download PDF

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Publication number
JP2013011713A
JP2013011713A JP2011143796A JP2011143796A JP2013011713A JP 2013011713 A JP2013011713 A JP 2013011713A JP 2011143796 A JP2011143796 A JP 2011143796A JP 2011143796 A JP2011143796 A JP 2011143796A JP 2013011713 A JP2013011713 A JP 2013011713A
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Prior art keywords
blade
substrate
optical path
drive ring
blade member
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JP2011143796A
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Japanese (ja)
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Masahiro Hanawa
真弘 花輪
Hiroshi Sentoda
宏 仙洞田
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Canon Finetech Nisca Inc
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Nisca Corp
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Priority to JP2011143796A priority Critical patent/JP2013011713A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
    • B29C65/7814—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B29C66/712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined the composition of one of the parts to be joined being different from the composition of the other part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/764—Photographic equipment or accessories

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Shutters For Cameras (AREA)
  • Diaphragms For Cameras (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a light quantity adjustment device capable of suppressing peeling of laser-welded blade members and forming an exact exposure aperture.SOLUTION: The light quantity adjustment device comprises: a substrate including an optical path aperture; the blade members for opening/closing the optical path aperture; a drive ring for driving the blade members; and driving means for rotating the drive ring with the optical path aperture as a center. Each of the blade members includes: a blade substrate which forms a throttle forming section for opening/closing the optical path aperture and a base end portion in which a pair of support shafts fitted to the substrate and the drive ring are disposed at a base end of the throttle forming section and does not transmit laser light; and an auxiliary substrate which includes support shafts stuck to the base end portion by laser welding and transmits laser light. In the auxiliary substrate, a groove section is formed to allow a solvent of the blade substrate dissolving by the laser to flow out to a welding region irradiated with laser on a front surface side opposed to the blade substrate.

Description

本発明はビデオカメラ、スチールカメラなどの撮像装置、或いはプロジェクタその他の投影装置に内蔵され、撮影光量、投映光量などの光量を調整する光量調整装置に関する。 The present invention relates to a light amount adjustment device that is incorporated in an imaging device such as a video camera or a still camera, or a projection device such as a projector, and adjusts a light amount such as a photographing light amount or a projected light amount.

一般に、この種の光量調整装置は、撮影光路（或いは投影光路）に光軸開口を有する基板を配置し、この基板に複数枚の光量調節羽根を開閉自在に配置して光軸開口を大口径又は小口径に光量調整する装置として知られている。 In general, this type of light amount adjusting device has a substrate having an optical axis opening in a photographing optical path (or projection optical path), and a plurality of light amount adjusting blades are disposed on the substrate so that the optical axis opening can be opened and closed. Alternatively, it is known as a device for adjusting the light quantity to a small diameter.

例えば特許文献１には、基板に形成した光軸開口の周囲に複数枚の羽根を配置し、光路口径を小径から大径まで相似形で開閉する虹彩絞り装置が開示されている。このような絞り装置は、多数枚の羽根で円形状に近い口径で多段階に光量調整する特徴が知られている。 For example, Patent Document 1 discloses an iris diaphragm device in which a plurality of blades are arranged around an optical axis opening formed on a substrate, and an optical path aperture is opened and closed in a similar shape from a small diameter to a large diameter. Such a diaphragm device is known to be capable of adjusting the amount of light in a multistage manner with a nearly circular aperture with a large number of blades.

同文献には、中央に光路開口を有する上下一対のリング状基板の間に、複数の絞り羽根を光路開口の周囲に鱗状に配置し、この複数の絞り羽根を基板の一方に設けた駆動ユニットで開閉する開閉機構が開示されている。 In this document, a drive unit in which a plurality of diaphragm blades are arranged in a scale around the optical path opening between a pair of upper and lower ring-shaped substrates having an optical path opening in the center, and the plurality of diaphragm blades are provided on one side of the substrate. An opening / closing mechanism that opens and closes is disclosed.

また特許文献２には、特許文献１で用いられも絞り羽根とは異なり、絞り羽根を構成する羽根部材と軸部材をレーザ溶着によって溶着した構造のもので、羽根部材の溶着部表面に凸部を形成し、軸部材の溶着部表面に羽根部材の凸部を収容する凹部を形成し、軸部材の凹部と羽根部材の凸部を圧接した状態でレーザ光を照射して溶着する技術が開示されている。 Also, Patent Document 2 has a structure in which a blade member and a shaft member constituting the diaphragm blade are welded by laser welding, unlike the diaphragm blade, which is used in Patent Document 1, and a convex portion is formed on the surface of the welded portion of the blade member. A technique is disclosed in which a concave portion for accommodating the convex portion of the blade member is formed on the surface of the welding portion of the shaft member, and welding is performed by irradiating laser light in a state where the concave portion of the shaft member and the convex portion of the blade member are pressed. Has been.

また、特許文献３には、絞り羽根をレーザ溶着するレーザ溶着装置が開示され、レーザ溶着装置そのものは広く知られている。 Patent Document 3 discloses a laser welding apparatus for laser welding aperture blades, and the laser welding apparatus itself is widely known.

特開２００９−０２０４３８号公報JP 2009-020438 A 特開２００８−２０９４９５号公報JP 2008-209495 A 特開２００９−２７４２１７号公報JP 2009-274217 A

上述のように光路開口の周縁に複数の羽根を配置し、この各羽根を所定角度回動させて通過光量を大小調整する装置として特許文献１、２などで知られている。この場合その構造は、中央に光路開口を有する上下一対の基板間に、複数の羽根部材を軸支持し、この各羽根を基板間に内蔵した駆動リングで開閉する機構が採用されている。 As described above, Patent Documents 1 and 2 and the like are known as devices that arrange a plurality of blades at the periphery of an optical path opening and rotate the blades by a predetermined angle to adjust the amount of light passing therethrough. In this case, the structure employs a mechanism in which a plurality of blade members are axially supported between a pair of upper and lower substrates having an optical path opening at the center, and each blade is opened and closed by a drive ring built in between the substrates.

そしてその構造は、基板上に複数の羽根部材を互いに隣接する端部を鱗状に重ね合わせて円周方向に配列し、この各羽根部材を駆動リングで同一角度方向に回動させることによって開口径を大小調節するように構成されている。 The structure is such that a plurality of blade members are arranged on the substrate in a circumferential direction with their adjacent ends overlapped in a scale shape, and each blade member is rotated in the same angular direction by a drive ring, thereby opening the aperture diameter. It is configured to adjust the size.

従って、複数の羽根部材は互いに隣接する端部同士が重ね合わされ、羽根のクローズ方向（全閉方向）では重ね合わせ面積が徐々に大きくなるように変化し、羽根のオープン方向（全開方向）では重ね合わせ面積が徐々に小さくなるように変化する。これと共に羽根の構成枚数によっては調整光量に応じて羽根の重ね合わせ枚数が変化する場合がある。 Accordingly, the end portions adjacent to each other of the plurality of blade members are overlapped, and the overlapping area gradually increases in the blade closing direction (fully closed direction), and overlaps in the blade opening direction (fully opened direction). The combined area changes so as to gradually become smaller. At the same time, depending on the number of constituent blades, the number of overlapping blades may vary depending on the adjustment light quantity.

図１６及び図１７には、７枚構成の羽根構造を示し、光路開口１００を有する基板１０１と押さえ板１０４間に７枚の羽根部材１０３を円周方向に隣設端部を重ね合わせて配列する。図１６（ａ）は小絞り状態の重ね合わせ平面形状を示し、同図（ｂ）は断面構成（（ａ）矢視方向）を示す。同図（ｂ）に示すように羽根部材１０３は隣接する羽根の一部と重なり合う。
つまり７枚構成の羽根部材を鱗状に重ね合わせた場合、同図（ａ）に示すように例えば羽根部材１０３ｂは羽根部材１０３ａの上重ねられ、羽根部材１０３ｃの下側に挿し入れられた状態になり、この関係は最後の重ねた７枚目の羽根部材１０３ｇにあっても、羽根部材１０３ｇは羽根部材１０３ｆの上重ねられ、最初の羽根部材１０３ａの下側に挿し入れられた状態になる。この関係は、ｎ枚構成の羽根部材を鱗状に重ね合わせることによって同様になる。 16 and 17 show a seven-blade blade structure, in which seven blade members 103 are arranged in a circumferential direction with overlapping adjacent end portions between a substrate 101 having an optical path opening 100 and a holding plate 104. To do. FIG. 16A shows an overlapping planar shape in a small aperture state, and FIG. 16B shows a cross-sectional configuration ((a) an arrow direction). As shown in FIG. 2B, the blade member 103 overlaps with a part of the adjacent blade.
That is, when seven blade members are overlapped in a scale shape, for example, the blade member 103b is overlaid on the blade member 103a and inserted under the blade member 103c as shown in FIG. Thus, even if this relationship is in the last overlapped seventh blade member 103g, the blade member 103g is overlaid on the blade member 103f and is inserted under the first blade member 103a. This relationship is the same by overlapping n-shaped blade members in a scale shape.

そこで、駆動リングと基板（地板）との間に鱗状に重ね合わされ配置される羽根部材は、図１６（ａ）で示す小絞り状態において同図（ｂ）の断面構成で示す様に、光路開口１００の周縁部分では羽根部材１０３ａ、羽根部材１０３ｂ、羽根部材１０３ｃの３枚が重なった状態になる。従って駆動リング１０２と基板１０１との間隔（Ｌ）は、最大の重なり枚数（ｎ）と羽根部材の厚さ（ｓ）と各羽根部材の開閉動作に要するクリアランス（ｄｃ）によって設定される。例えばこの間隔はＬ≧ｎ・ｓ＋ｎ・ｄｃとなるように設定される。
ところが図１７（ａ）で示す絞り全開放状態において同図（ｂ）の断面構成で示す様に、光路開口１００の外周縁に羽根部材１０３ａ、羽根部材１０３ｂの２枚が重なった状態になる。このように基板１０１と駆動リング１０２との間に挟持される羽根部材は、光路開口の開口量に応じてその重なり面積と重なり枚数が変化する。このため羽根部材は駆動リングと基板（地板）との間で可也の空間を持って配設されることとなり次の問題が生ずる。 Therefore, the blade member arranged in a scale-like manner between the drive ring and the substrate (base plate) has an optical path opening as shown in the cross-sectional configuration of FIG. 16B in the small aperture state shown in FIG. In the peripheral portion of 100, the three blade members 103a, 103b, and 103c are overlapped. Therefore, the distance (L) between the drive ring 102 and the substrate 101 is set by the maximum number of overlaps (n), the thickness of the blade member (s), and the clearance (dc) required for the opening / closing operation of each blade member. For example, this interval is set so that L ≧ n · s + n · dc.
However, in the fully open state of the aperture shown in FIG. 17A, as shown in the cross-sectional configuration of FIG. 17B, the blade member 103a and the blade member 103b are overlapped with the outer peripheral edge of the optical path opening 100. Thus, the overlapping area and the number of overlapping of the blade member sandwiched between the substrate 101 and the drive ring 102 change according to the opening amount of the optical path opening. For this reason, the blade member is disposed with a space between the drive ring and the substrate (base plate), resulting in the following problems.

駆動リング１０２と各羽根部材１０３とは、一方にピン状突起、他方に溝孔が互いに係合するように設けられ、駆動リングの回転で各羽根部材が開閉動する。これと同時に地板１０１と各羽根部材との間にも一方にピン状突起、他方に溝孔が互いに係合するように設けられている。この２つの溝孔は各羽根の開閉軌跡に沿ってこれをガイドするように形成されている。 The drive ring 102 and each blade member 103 are provided such that a pin-like protrusion is engaged on one side and a slot is engaged with the other, and each blade member is opened and closed by rotation of the drive ring. At the same time, a pin-like projection is provided on one side and a slot is provided on the other side between the main plate 101 and each blade member. These two slots are formed so as to guide them along the opening / closing locus of each blade.

このような構成において基板（地板）と駆動リングとの間隔は、最大重なり枚数に応じて設定することとなり、各羽根部材は開口量に応じて重なり枚数が変化する。このため図１６（ｂ）のように光路開口中心側の羽根部材先端部側は３枚重なりとなり、図１７（ｂ）のように基端部側は２枚重なりの羽根部材構成となる。 In such a configuration, the distance between the substrate (base plate) and the drive ring is set according to the maximum number of overlapping sheets, and the number of overlapping blade members changes according to the opening amount. For this reason, as shown in FIG. 16 (b), the blade member tip end side on the optical path opening center side is overlapped with three sheets, and as shown in FIG. 17 (b), the base end part side is overlapped with two blade members.

そこで図１６（ａ）で示す小絞り状態になった場合、３枚重なりとなる羽根部材先端部側は図１０で示す様に他の羽根部材の羽根部材先端部で押し上げられ、各羽根部材は基端部から羽根部材先端部に向かって反り上げられ、ちょうど図１７（ｂ）の羽根部材１０３ａのように傾かされる。また図１７（ａ）で示す絞り全開放状態になった場合、図１７（ａ）で示す様に羽根部材は駆動リングと基板（地板）との間で図１７（ｂ）の羽根部材１０３ａのように傾かされる。この羽根部材の傾きはピン状突起と溝孔との係合状態が変化することで、図１７（ｃ）で示すように羽根部材の開閉位置がずれ、結果絞り口径が変化し光量斑となる問題が有る。特に小絞り状態において光量斑への影響が大きい。 Therefore, when the small aperture state shown in FIG. 16 (a) is reached, the blade member tip side where the three sheets overlap is pushed up by the blade member tip part of the other blade member as shown in FIG. The blade is warped from the base end toward the tip of the blade member, and tilted just like the blade member 103a of FIG. 17A, when the diaphragm is fully opened, as shown in FIG. 17A, the blade member is disposed between the drive ring and the substrate (base plate) of the blade member 103a in FIG. 17B. Tilted like so. The inclination of the blade member changes the engagement state between the pin-like protrusion and the groove hole, so that the opening / closing position of the blade member is shifted as shown in FIG. There is a problem. In particular, in the small aperture state, the influence on the light intensity spot is large.

また、特許文献２、３で知られるレーザ溶着による絞り羽根は、上述する各羽根部材の基端部から羽根部材先端部に向かって反り上げられることで、基端部が傾くと共に大きな負荷が軸部材の凹部と羽根部材の凸部との溶着面に加えられ、その負荷によりレーザ溶着した軸部材の凹部と羽根部材の凸部が剥がれ易いといった問題が有る。 Further, the diaphragm blades by laser welding known from Patent Documents 2 and 3 are warped upward from the base end portion of each blade member described above toward the tip end portion of the blade member, so that the base end portion is inclined and a large load is shafted. There is a problem that the concave portion of the shaft member and the convex portion of the blade member, which are added to the welding surface of the concave portion of the member and the convex portion of the blade member and laser-welded due to the load, are easily peeled off.

本発明は、この問題点に鑑みて羽根部材の傾きを抑制することで適正な露光制御が行い得る光量調整装置の提供をその課題としている。 In view of this problem, an object of the present invention is to provide a light amount adjustment device capable of performing appropriate exposure control by suppressing the inclination of the blade member.

上記課題を達成するため請求項１に記載する本発明の光量調整装置は、複数の羽根部材によって光路開口の通過光量を調整する光量調整装置であって、中央部に光路開口を有するリング形状の基板と、前記光路開口の周囲に配置され円周方向に鱗状に重なり合う複数の羽根部材と、前記基板との間に前記複数の羽根部材を挟むように配置され各羽根部材を開閉動する駆動リングと、前記駆動リングを前記光路開口を中心に回動する駆動手段と、を備え、前記羽根部材は、前記光路開口を開閉する絞り形成部と、その絞り形成部の基端に前記基板と前記駆動リングに嵌合する一対の支軸を配設する基端部とを形成しレーザ光を透過しない羽根基板と、前記基端部にレーザ溶着で張り合わされる前記支軸を備えレーザ光を透過する補助基板から成り、前記補助基板は、前記羽根基板と対峙する表面側で、前記レーザを照射する溶着領域に、そのレーザで溶解（溶融）する前記羽根基板の溶材を流出する溝部を形成している。 In order to achieve the above object, a light amount adjusting device according to the present invention described in claim 1 is a light amount adjusting device that adjusts the amount of light passing through an optical path opening by a plurality of blade members, and has a ring shape having an optical path opening at the center. A drive ring that is disposed around the optical path opening and overlaps in a circumferential direction with a plurality of blade members, and is arranged to sandwich the plurality of blade members between the substrate and opens and closes each blade member And a driving means for rotating the drive ring about the optical path opening, and the blade member includes a diaphragm forming part that opens and closes the optical path opening, and the substrate and the base at the base end of the diaphragm forming part A blade substrate that forms a base end portion on which a pair of support shafts fitted to the drive ring is disposed and does not transmit laser light, and the support shaft that is bonded to the base end portion by laser welding, transmits laser light. Made of auxiliary substrate The auxiliary substrate, the feathers substrate and facing to the front side, the weld region to be irradiated with the laser to form a groove for flowing out the welding material of the blade substrate dissolved (melted) at its laser.

また、請求項２に記載する本発明の光量調整装置は、複数の羽根部材によって光路開口の通過光量を調整する光量調整装置であって、中央部に光路開口を有するリング形状の基板と、前記光路開口の周囲に配置され円周方向に鱗状に重なり合う複数の羽根部材と、前記基板との間に前記複数の羽根部材を挟むように配置され各羽根部材を開閉動する駆動リングと、前記基板と駆動リングとの間の前記複数の羽根部材と対峙する位置で、前記基板と各羽根部材との間に配置され、各羽根部材を駆動リング側に押圧するか、若しくは前記駆動リングと羽根部材との間に配置され、各羽根部材を基板側に押圧する弾性力を有する弾性部材と、前記駆動リングを前記光路開口を中心に回動する駆動手段と、を備え、前記羽根部材は、前記光路開口を開閉する絞り形成部と、その絞り形成部の基端に前記基板と前記駆動リングに嵌合する一対の支軸を配設する基端部とを形成しレーザ光を透過しない羽根基板と、前記基端部にレーザ溶着で張り合わされる前記支軸を備えレーザ光を透過する補助基板から成り、前記補助基板は、前記羽根基板と対峙する表面側で、前記レーザを照射する溶着領域に、そのレーザで溶解（溶融）する前記羽根基板の溶材を流出する溝部を形成している。 The light amount adjusting device of the present invention described in claim 2 is a light amount adjusting device that adjusts the amount of light passing through the optical path opening by a plurality of blade members, the ring-shaped substrate having the optical path opening at the center, A plurality of blade members disposed around the optical path opening and overlapping in a scale shape in the circumferential direction; a drive ring disposed so as to sandwich the plurality of blade members between the substrates; Between the substrate and each blade member at a position facing the plurality of blade members between the drive ring and the drive ring, and pressing each blade member toward the drive ring, or the drive ring and the blade member And an elastic member having an elastic force for pressing each blade member toward the substrate side, and a drive means for rotating the drive ring around the optical path opening, Open the optical path opening A diaphragm forming portion to be formed, a base end portion for disposing a pair of support shafts fitted to the substrate and the drive ring at a base end of the diaphragm forming portion, and a blade substrate not transmitting laser light; The auxiliary substrate is provided with the support shaft that is bonded to the end portion by laser welding and transmits laser light. The auxiliary substrate is on the surface side facing the blade substrate, and the laser is irradiated on the welding region where the laser is irradiated. A groove portion is formed to flow out the melted material of the blade substrate that is melted (melted).

また、請求項３に記載する本発明の光量調整装置は、請求項１及び２に記載する光量調整装置における前記羽根基板は、前記補助基板の一対の支軸の一つが貫通する位置決め用孔を形成し、前記溶着領域は前記一対の支軸の間に設定されている。 According to a third aspect of the present invention, there is provided the light amount adjusting device according to the present invention, wherein the blade substrate in the light amount adjusting device according to the first and second aspects has a positioning hole through which one of the pair of support shafts of the auxiliary substrate passes. The welding region is formed between the pair of support shafts.

また、請求項４に記載する本発明の光量調整装置は、請求項１乃至３に記載する光量調整装置における前記溶着領域が、前記一対の支軸の間に配設された略円形領域で、前記補助基板の溝部は、前記溶着領域内に形成された少なくとも一つ環状の溝で形成している。 Further, in the light amount adjusting device of the present invention described in claim 4, the welding region in the light amount adjusting device described in claims 1 to 3 is a substantially circular region disposed between the pair of support shafts. The groove portion of the auxiliary substrate is formed by at least one annular groove formed in the welding region.

また、請求項５に記載する本発明の撮像装置は、被写体からの光を結像する結像レンズと、この結像レンズからの光を受光する撮像手段と、上記被写体から結像レンズに至る光路に配置された光量調整装置と、を備え、その光量調整装置は、前記請求項１及び４のいずれか１項に記載の構成を有している。 According to a fifth aspect of the present invention, there is provided an imaging apparatus according to the present invention, the imaging lens for imaging light from the subject, the imaging means for receiving the light from the imaging lens, and the imaging lens from the subject. A light amount adjusting device disposed in the optical path, and the light amount adjusting device has the configuration according to any one of claims 1 and 4.

本発明の請求項１及び２に記載の光量調整装置は共に、羽根部材が、前記光路開口を開閉する絞り形成部と、その絞り形成部の基端に前記基板と前記駆動リングに嵌合する一対の支軸を配設する基端部とを形成しレーザ光を透過しない羽根基板と、前記基端部にレーザ溶着で張り合わされる前記支軸を備えレーザ光を透過する補助基板から成り、前記補助基板は、前記羽根基板と対峙する表面側で、前記レーザを照射する溶着領域に、そのレーザで溶解（溶融）する前記羽根基板の溶材を流出する溝部を形成していることから、レーザ溶着する軸部材と羽根部材との溶着面において、羽根部材の溶着面に対峙する軸部材の溶着面に、レーザ溶着で溶解した溶材の一部が流出する溝部を形成したことによって、実質溶着面が拡大し、接着力が増大し、より一層軸部材の凹部と羽根部材の凸部との溶着面の剥がれを抑制することが出来る。 In both of the light quantity adjusting devices according to the first and second aspects of the present invention, the blade member is fitted to the diaphragm and the drive ring at the base end of the diaphragm forming part that opens and closes the optical path opening and the diaphragm forming part. A blade substrate that forms a base end portion on which a pair of support shafts are disposed and does not transmit laser light; and an auxiliary substrate that includes the support shaft bonded to the base end portion by laser welding and transmits laser light. Since the auxiliary substrate is formed on the surface side facing the blade substrate with a groove portion that flows out the melted material of the blade substrate that is melted (melted) by the laser in the welding region irradiated with the laser. In the welding surface between the shaft member to be welded and the blade member, a groove portion through which a part of the melted material melted by laser welding flows out is formed on the welding surface of the shaft member facing the welding surface of the blade member. Expanded and increased adhesive strength And, it is possible to suppress further peeling of the welding surface of the convex portion of the concave portion and the blade member of the shaft member.

また、本発明の請求項２に記載の光量調整装置にあっては、中央に光路開口を有する基板に複数の羽根部材を鱗状に重ね合わせて駆動リングで所定の開閉軌跡に沿って開閉動する際に、基板と駆動リングとの間に弾性部材と各羽根部材とを対峙させた状態で設け、弾性部材により各羽根部材を対向する反対側に位置する駆動リング又は基板に押圧するように構成したことによって、互いに重なり合う複数の羽根部材は、これを開閉可能に支持する基板と駆動リングとの間のギャップ間で、例えば、小絞り状態にあっては、各羽根部材が基端部から先端部に向かって反り上げられることで各羽根部材が傾こうとしても、また絞り全開放状態にあっては、撮像装置の姿勢が変わることによる各羽根部材が傾こうとしても、その各羽根部材の傾きを弾性部材が抑制され、開閉する各羽根部材が大きく傾くことが無く以下の効果を呈する。 In the light quantity adjusting device according to the second aspect of the present invention, a plurality of blade members are superposed on a substrate having an optical path opening at the center, and are opened / closed along a predetermined opening / closing locus by a drive ring. In this case, the elastic member and each blade member are provided in a state of facing each other between the substrate and the drive ring, and each blade member is configured to be pressed against the drive ring or the substrate located on the opposite side by the elastic member. As a result, the plurality of blade members that overlap each other are arranged between the gap between the substrate and the drive ring that supports the blade members so that they can be opened and closed. Even if each blade member is tilted by being warped up toward the part, or in the fully open state, even if each blade member is tilted by changing the posture of the imaging device, Tilt Sexual member is suppressed, it exhibits the following effects without that each blade member for opening and closing is greatly inclined.

第１に、羽根部材と基板及び駆動リングに形成されたピン状突起と溝孔の係合位置が傾きによる位置ずれを起こすことがないので羽根部材による絞り口径を適正値に設定可能で適正な光量調整が出来る。 First, the engagement position of the pin-shaped protrusion formed on the blade member, the substrate and the drive ring and the slot does not cause a displacement due to the inclination, so that the aperture diameter of the blade member can be set to an appropriate value and appropriate. The amount of light can be adjusted.

第２に、各羽根部材が基端部から先端部に向かって反り上げられた状態でも、弾性部材による押圧力で、軸部材の凹部と羽根部材の凸部との溶着面の剥がれを抑えることが出来、作動不良の無い光量調整装置を提供出来る。 Second, even when each blade member is warped upward from the base end portion toward the tip end portion, the peeling of the welding surface between the concave portion of the shaft member and the convex portion of the blade member is suppressed by the pressing force of the elastic member. Therefore, it is possible to provide a light amount adjusting device that does not cause malfunction.

本発明の一実施形態を示す斜視構成の説明図。Explanatory drawing of the perspective structure which shows one Embodiment of this invention. 図１の装置における第１基板（地板と弾性部材）と羽根組の拡大した構成説明図。The structure explanatory drawing to which the 1st board | substrate (base plate and elastic member) and blade | wing set in the apparatus of FIG. 1 was expanded. 図１の装置における第２基板（押さえ板と駆動リング）の拡大した構成説明図。FIG. 3 is an enlarged configuration explanatory view of a second substrate (a pressing plate and a drive ring) in the apparatus of FIG. 1. （ａ）は図１の装置における第１基板（地板）の形状、（ｂ）は弾性部材の状を示す説明図。(A) is explanatory drawing which shows the shape of the 1st board | substrate (ground plate) in the apparatus of FIG. 1, (b) shows the shape of an elastic member. 図１の装置における羽根部材形状の説明図であり、（ａ）は羽根部材の組み立て分解状態を、（ｂ）は羽根部材の断面構成を、（ｃ）は羽根部材の開閉軌跡の説明図である。It is explanatory drawing of the blade member shape in the apparatus of FIG. 1, (a) is an assembly decomposition | disassembly state of a blade member, (b) is a cross-sectional structure of a blade member, (c) is explanatory drawing of the opening-and-closing locus | trajectory of a blade member. is there. 図５（ｂ）の部分拡大図であり、（ａ）は羽根部材の断面構成を、（ｂ）はその正面図である。It is the elements on larger scale of FIG.5 (b), (a) is a cross-sectional structure of a blade member, (b) is the front view. 図６に相当する変形例の部分拡大図であり、（ａ）は羽根部材の断面構成を、（ｂ）はその正面図である。It is the elements on larger scale of the modification equivalent to FIG. 6, (a) is the cross-sectional structure of a blade member, (b) is the front view. 駆動リングと羽根部材との関係を示す説明図であり（ａ）は駆動リンクの全体形状を（ｂ）は駆動リングの要部の拡大説明図。It is explanatory drawing which shows the relationship between a drive ring and a blade | wing member, (a) is the whole shape of a drive link, (b) is an expanded explanatory view of the principal part of a drive ring. 図１の実施形態に於ける作用の説明図であり、（ａ）は羽根部材が絞り全開状態（全開放口径）の重なり状態の説明図、（ｂ）は断面状態の説明図（（ａ）図ａ−ａ線断面図）It is explanatory drawing of the effect | action in embodiment of FIG. 1, (a) is explanatory drawing of the overlapping state of a blade | wing member fully-opened state (full open aperture), (b) is explanatory drawing of a cross-sectional state ((a)). (A-a line sectional view) 図１の実施形態に於ける作用の説明図であり、（ａ）は羽根部材が小絞り状態（最小絞り口径）の重なり状態の説明図、（ｂ）は断面状態の説明図（（ａ）図ａ−ａ線断面図）FIGS. 2A and 2B are explanatory views of the operation in the embodiment of FIG. 1, in which FIG. 1A is an explanatory view of an overlapped state of a blade member in a small throttle state (minimum aperture diameter), and FIG. (A-a line sectional view) 図１の装置の駆動ユニットの説明図（中央縦断面図）。Explanatory drawing (center longitudinal cross-sectional view) of the drive unit of the apparatus of FIG. 図１と異なる実施形態を示す斜視構成の説明図。Explanatory drawing of the perspective structure which shows embodiment different from FIG. 図１２の実施形態の詳細説明図であり、（ａ）は駆動リンクの説明図、（ｂ）は弾性部材の説明図、（ｃ）は弾性部材の断面形状の説明図。It is detail explanatory drawing of embodiment of FIG. 12, (a) is explanatory drawing of a drive link, (b) is explanatory drawing of an elastic member, (c) is explanatory drawing of the cross-sectional shape of an elastic member. （ａ）は羽根部材を小絞り状態に絞ったときの重なり状態の説明図であり、（ｂ）は羽根部材を絞り全開放状態にしたときの重なり状態の説明図である。(A) is explanatory drawing of the overlapping state when a blade member is narrowed to the small aperture state, (b) is an explanatory diagram of the overlapping state when the blade member is set to a fully open state. 本発明に係わる撮像装置の構成を示す説明図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 従来技術の説明図であり、（ａ）は羽根部材を小絞り状態に絞ったときの平面構成の説明図であり、（ｂ）はそのａ−ａ線断面図。It is explanatory drawing of a prior art, (a) is explanatory drawing of a plane structure when a blade | wing member is restrict | squeezed to a small aperture state, (b) is the sectional view on the aa line. 従来技術の説明図であり、（ａ）は羽根部材を絞り全開放状態にしたときの平面構成の説明図であり、（ｂ）はそのａ−ａ線断面図で、（ｃ）は羽根部材の傾きによる開閉状態を示す状態図。BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of a prior art, (a) is explanatory drawing of a plane structure when a blade member is made into a full open state, (b) is the sectional view on the aa line, (c) is a blade member. The state diagram which shows the opening-and-closing state by inclination of.

以下図示の好適な実施の形態に基づいて本発明を説明する。
図１は本発明に係わる光量調整装置Ａの全体構成を示す組み立て分解図である。光量調整装置Ａは図１に示すように、第１基板組（地板組）１と、羽根組２と、駆動リング３１と、第２基板組４（押さえ板組）で構成されている。
そして第１基板組１に羽根組２が組み込まれ、この羽根組２の上に駆動リング３１と第２基板組４が組み込まれている。そして第１基板１１と第２基板４１とは互いに組み合わされてビスなどの固定手段で一体化され、このとき羽根部材２０と駆動リング３１が両基板間にサンドイッチ状に支持される。 The present invention will be described below based on preferred embodiments shown in the drawings.
FIG. 1 is an exploded view showing the overall configuration of a light amount adjusting apparatus A according to the present invention. As shown in FIG. 1, the light amount adjusting device A includes a first substrate set (base plate set) 1, a blade set 2, a drive ring 31, and a second substrate set 4 (presser plate set).
A blade set 2 is incorporated in the first substrate set 1, and a drive ring 31 and a second substrate set 4 are incorporated on the blade set 2. The first substrate 11 and the second substrate 41 are combined with each other and integrated by a fixing means such as a screw. At this time, the blade member 20 and the drive ring 31 are supported between the substrates in a sandwich shape.

このような構成によって光路開口１２は第１基板１１と第２基板４１に形成され、この光路開口１２を複数の羽根部材２０а〜２０ｉで大小口径に開口調整する。このため第１基板１１又は第２基板４１に駆動モータＭがマウントされ、モータＭの回転で駆動リング３１が所定角度回転し、その回転で複数の羽根部材２０が同一量ずつ移動して光路開口１２の口径を大小に調節する。 With such a configuration, the optical path opening 12 is formed in the first substrate 11 and the second substrate 41, and the opening of the optical path opening 12 is adjusted to a large or small aperture by the plurality of blade members 20a to 20i. For this reason, the drive motor M is mounted on the first substrate 11 or the second substrate 41, the drive ring 31 rotates by a predetermined angle by the rotation of the motor M, and the plurality of blade members 20 move by the same amount by the rotation, thereby opening the optical path. Adjust the diameter of 12 to large or small.

［第１基板組の構成］
図２は図１の組み立て分解図における第１基板組１及び羽根組２を拡大した分解説明図である。第１基板組１は、第１基板１１と弾性部材１５で構成されている。第１基板１１（以下地板として説明する）と弾性部材１５とは、中央に光路開口１２を有するリング形状に形成され、地板１１の上に弾性部材１５が積層状に積み重ねられている。
図２に従って地板（第１基板）１１、弾性部材１５の順に説明する。 [Configuration of first substrate set]
FIG. 2 is an exploded explanatory view in which the first substrate set 1 and the blade set 2 in the exploded view of FIG. 1 are enlarged. The first substrate set 1 includes a first substrate 11 and an elastic member 15. The first substrate 11 (hereinafter described as a ground plane) and the elastic member 15 are formed in a ring shape having an optical path opening 12 in the center, and the elastic member 15 is stacked on the ground plane 11 in a laminated form.
The base plate (first substrate) 11 and the elastic member 15 will be described in this order according to FIG.

地板１１には中央部に光路開口１２が形成され、その外形状は撮像装置（不図示）の鏡筒形状に応じた形状に構成される。この地板１１は金属、合成樹脂などで光量調整装置Ａ全体に強靭性を持たせる装置基盤に適した材質・寸法に形成されている。 An optical path opening 12 is formed in the center portion of the base plate 11, and its outer shape is configured in accordance with the lens barrel shape of an imaging device (not shown). The base plate 11 is made of metal, synthetic resin, or the like and has a material and dimensions suitable for a device base that gives the entire light amount adjusting device A toughness.

上記光路開口１２の周縁には、後述する羽根部材２０を支持する羽根支持面１１ｘ（平坦面若しくは突起ガイド面）が形成されている。この羽根支持面１１ｘと後述する各羽根部材２０の一方にピン状突起で第１の支軸となるガイドピン２２が、他方にこれと係合する第１の溝孔１３（以下ガイド溝として説明する）が設けられている。
このガイドピン２２とガイド溝１３とは互いに嵌合して羽根部材２０を溝孔に沿って所定の軌跡で開閉動するようになっている。各羽根部材２０には後述する駆動リング３１との間に、その一方にピン状突起で第２の支軸となる作動ピン２３が、他方に第２の溝孔３３が形成されている。 On the periphery of the optical path opening 12, a blade support surface 11x (a flat surface or a projection guide surface) that supports a blade member 20 described later is formed. A guide pin 22 serving as a first support shaft with a pin-like projection on one of the blade support surface 11x and each blade member 20 to be described later, and a first slot 13 (hereinafter referred to as a guide groove) engaged with the other on the other. Is provided).
The guide pin 22 and the guide groove 13 are fitted to each other so as to open and close the blade member 20 along the groove hole along a predetermined locus. Each blade member 20 is provided with a drive ring 31 (to be described later), one of which has a pin-like projection with a working pin 23 serving as a second support shaft and the other with a second slot 33.

図２に示す装置（一実施形態）では、後述する羽根部材２０の地板１１と面す側にガイドピン２２が駆動リング３１と面する側に作動ピン２３が一体形成されている。そして地板１１に第１の溝孔（ガイド溝）１３が、駆動リング３１に第２の溝孔３３が形成され、前者にガイドピン２２が、後者に作動ピン２３が嵌合されている。また第１の溝孔１３は羽根部材２０の開閉軌跡に沿ったスリット溝（以下「ガイド溝」という）で形成されている。 In the apparatus (one embodiment) shown in FIG. 2, the guide pin 22 is integrally formed on the side of the blade member 20, which will be described later, facing the base plate 11, and the operation pin 23 is integrally formed on the side facing the drive ring 31. A first groove (guide groove) 13 is formed in the base plate 11, a second groove 33 is formed in the drive ring 31, and the guide pin 22 is fitted in the former and the operation pin 23 is fitted in the latter. The first groove 13 is formed by a slit groove (hereinafter referred to as “guide groove”) along the opening / closing locus of the blade member 20.

「地板の構成」
図２に示す地板１１は、合成樹脂のモールド成形で形成してある。この場合地板に強靭性を持たせる場合にはガラス繊維を混入し、帯電性を帯びさせる場合にはカーボン繊維などを混入する。このように合成樹脂で成形することによって複雑な形状であっても加工が容易であり、安価に製造することが出来る。
これと共に装置基板としての地板を軽量に構成することが可能である。合成樹脂としては耐熱性に富んだエポキシ樹脂、強靭性に富んだガラス繊維強化樹脂、導電性に富んだカーボン繊維混入樹脂などを用途に応じて使用する。 "Configuration of the ground plane"
The ground plane 11 shown in FIG. 2 is formed by molding a synthetic resin. In this case, glass fiber is mixed when the base plate is tough, and carbon fiber is mixed when charging the base plate. By molding with synthetic resin in this way, processing is easy even with a complicated shape, and it can be manufactured at low cost.
At the same time, it is possible to configure a ground plate as a device substrate to be lightweight. As the synthetic resin, an epoxy resin rich in heat resistance, a glass fiber reinforced resin rich in toughness, a carbon fiber mixed resin rich in electrical conductivity, or the like is used depending on the application.

このように地板１１は合成樹脂のモールド成形によって製造することが薄型化、小型軽量化などから好ましい。また、耐久性、導電性などから樹脂に強化繊維、導電性繊維などを混入することによって所望の特性が得られる。
その反面、合成樹脂で基板（地板）を成形することによって加工精度が劣る問題、或いは混入繊維によって表面粗さが劣り摩擦抵抗が増大する問題がある。本発明はこれらの問題を下記のように「地板と羽根部材の間に弾性部材を介在させる」ことによって解決したことを特徴としている。 Thus, it is preferable that the base plate 11 is manufactured by molding a synthetic resin in order to reduce the thickness, the size, and the weight. In addition, desired properties can be obtained by mixing reinforcing fibers, conductive fibers, and the like into the resin in view of durability and conductivity.
On the other hand, there is a problem that the processing accuracy is inferior by molding the substrate (base plate) with synthetic resin, or the surface roughness is inferior and the frictional resistance is increased by the mixed fibers. The present invention is characterized by solving these problems by “interposing an elastic member between the main plate and the blade member” as described below.

「弾性部材の構成」
本発明に係わる一実施形態は、地板１１に後述する羽根部材２０を直接載置して支持することなく、この地板１１と羽根部材２０との間に弾性部材１５を介在させることを特徴とし、以下その構成を説明する。 "Structure of elastic members"
One embodiment according to the present invention is characterized in that an elastic member 15 is interposed between the ground plate 11 and the blade member 20 without directly placing and supporting a blade member 20 to be described later on the ground plate 11. The configuration will be described below.

弾性部材１５は、図２にその斜視構造を、図４（ｂ）に平面構造を示すように地板１１と略々同一形状のリング形状に形成されている。このリング形状は各羽根部材２０に対し均一に押圧可能な形状で、且つ加工し易いことから最良の形状であるが、このリング形状で無くとも各羽根部材２０に対し均一に押圧可能な非リング形状であっても良い。
この弾性部材１５は図９（ｂ）に断面構造を示すように地板１１の羽根支持面１１ｘと羽根部材２０との間に介在し、羽根部材２０が直接地板１１と接触するのを避ける。図示の弾性部材１５は地板１１と略々同一の平面形状に形成している。 The elastic member 15 is formed in a ring shape that is substantially the same shape as the base plate 11, as shown in FIG. 2 and in a plan view in FIG. This ring shape is a shape that can be uniformly pressed against each blade member 20 and is the best shape because it is easy to process, but even if it is not this ring shape, a non-ring that can be pressed uniformly against each blade member 20 It may be a shape.
The elastic member 15 is interposed between the blade support surface 11x of the base plate 11 and the blade member 20 as shown in a cross-sectional structure in FIG. 9B, and avoids the blade member 20 from contacting the base plate 11 directly. The illustrated elastic member 15 is formed in substantially the same planar shape as the ground plane 11.

この弾性部材１５は、後述する羽根部材２０との摩擦係数が小さい樹脂フィルムで形成されている。図示の弾性部材１５は後述する羽根部材２０と同一素材で、例えばポリエチレン樹脂フィルム（ＰＥＴシート）の型抜き成形で形成されている。
そして図４（ｂ）にその形状を示すように地板１１のガイド溝１３と一致するガイド溝１６が形成されている。このガイド溝１６については後述する。 The elastic member 15 is formed of a resin film having a small friction coefficient with the blade member 20 described later. The illustrated elastic member 15 is made of the same material as the blade member 20 described later, and is formed, for example, by die-cutting a polyethylene resin film (PET sheet).
And the guide groove 16 which corresponds with the guide groove 13 of the ground plane 11 is formed so that the shape may be shown in FIG.4 (b). The guide groove 16 will be described later.

従って、地板１１を樹脂のモールド成形で、弾性部材１５を樹脂フィルムの型抜き成形で形成する場合には、地板１１の形状精度に比べ弾性部材１５の形状精度を高精細に形成することが出来る。このことは成形型に溶かした樹脂を流し込むモールド成形に比べ、圧延ロールによってシート状に形成した素材を型抜き成形することによって寸法精度が得られる為である。
また弾性部材１５の材質を羽根部材２０と同一材質にすることによって熱変化などの温度特性は羽根部材と実質的に同一となり、羽根部材２０と弾性部材１５は同一素材で帯電列が同一であるから両者が摺動しても静電気を帯びることがない。 Accordingly, when the base plate 11 is formed by resin molding and the elastic member 15 is formed by die cutting of a resin film, the shape accuracy of the elastic member 15 can be formed with higher definition than the shape accuracy of the base plate 11. . This is because dimensional accuracy can be obtained by die-cutting a material formed into a sheet shape by a rolling roll, compared with mold molding in which a resin melted in a mold is poured.
Further, by making the material of the elastic member 15 the same as that of the blade member 20, the temperature characteristics such as thermal change are substantially the same as the blade member, and the blade member 20 and the elastic member 15 are the same material and have the same charge train. Therefore, even if both slide, they are not charged with static electricity.

図示の弾性部材１５は地板１１と略々同一形状に形成され、中央に位置する光路開口１２の周縁に複数の羽根部材２０の基端部２１ｘを支持し、先端部２１ｙは光路開口内部に臨ませるように支持する。 The illustrated elastic member 15 is formed in substantially the same shape as the base plate 11, supports the base end portions 21 x of the plurality of blade members 20 on the periphery of the optical path opening 12 located in the center, and the distal end portions 21 y face the inside of the optical path opening. I will support you.

［ガイド溝とカイドピンの関係］
上述の地板１１に形成されたガイド溝１３と弾性部材１５に形成されたガイド溝１６と各羽根部材２０に形成されたガイドピン（第１の支軸）２２の関係について説明する。 [Relationship between guide groove and guide pin]
The relationship between the guide groove 13 formed on the base plate 11, the guide groove 16 formed on the elastic member 15, and the guide pin (first support shaft) 22 formed on each blade member 20 will be described.

地板１１のガイド溝１３は図９（ｂ）に示すように凹陥溝で構成され地板外部の光が透過されない盲穴形状に形成されている。また地板１１をモールド成形で形成する関係から抜きテーパθが形成され、その溝幅の平均寸法はｄｇに設定されている。 As shown in FIG. 9B, the guide groove 13 of the base plate 11 is formed as a concave groove and is formed in a blind hole shape that does not transmit light outside the base plate. Further, the taper θ is formed from the relationship of forming the base plate 11 by molding, and the average dimension of the groove width is set to dg.

また弾性部材１５のガイド溝１６は、地板１１の溝幅ｄｇより狭くガイドピン２２が食付くこと無くスリット溝を移動自在の溝幅ｄｂよりの貫通孔で形成されている。この貫通孔は樹脂フィルムの型抜き成形で均一径に形成されている。 Further, the guide groove 16 of the elastic member 15 is formed as a through-hole having a groove width db that is movable in the slit groove without being caught by the guide pin 22 and being narrower than the groove width dg of the base plate 11. The through holes are formed to have a uniform diameter by die-molding a resin film.

一方、各羽根部材２０а〜２０ｉにはガイドピン２２が植設され、その外径はｄａに設定されている。そこで、このガイドピン２２のピン外径ｄａと地板１１のガイド溝１３の溝幅ｄｇと弾性部材１５のガイド溝１６の溝幅ｄｂとの関係は、ｄａ≦ｄｂ＜ｄｇの関係に設定されている。
つまり弾性部材１５のガイド溝１６は地板１１のガイド溝１３より狭小幅（ｄｂ＜ｄｇ）でガイドピン外径ｄａと適合する寸法（ｄａ≦ｄｂ）に設定されている。 On the other hand, a guide pin 22 is implanted in each of the blade members 20a to 20i, and the outer diameter thereof is set to da. Therefore, the relationship between the pin outer diameter da of the guide pin 22, the groove width dg of the guide groove 13 of the base plate 11, and the groove width db of the guide groove 16 of the elastic member 15 is set such that da ≦ db <dg. Yes.
That is, the guide groove 16 of the elastic member 15 has a narrower width (db <dg) than the guide groove 13 of the base plate 11 and a dimension (da ≦ db) that matches the guide pin outer diameter da.

従って同図に示すように各羽根部材２０а〜２０ｉに植設されたガイドピン２２（第１の突起）の基端部は弾性部材１５のガイド溝１６と係合して運動規制され、ガイドピン２２（第１の突起）の先端部は地板１１のガイド溝１３とは接触しないように成っている。
このためガイドピン（第１の突起）２２はテーパθを有する地板１１のガイド溝１３と不安定に係合することが無く、各羽根部材２０а〜２０ｉは円滑に作動する。 Therefore, as shown in the figure, the base end portion of the guide pin 22 (first projection) implanted in each of the blade members 20a to 20i is engaged with the guide groove 16 of the elastic member 15 to restrict the movement, so that the guide pin The tip of 22 (first projection) is configured not to contact the guide groove 13 of the main plate 11.
For this reason, the guide pin (first protrusion) 22 does not unstably engage with the guide groove 13 of the ground plate 11 having the taper θ, and the blade members 20a to 20i operate smoothly.

そこで、地板１１、弾性部材１５から成る第１基板組１は駆動リング３１との間に隙間ギャップＬ（図１０（ｂ）参照）を形成し、羽根部材２０が移動自在に支持する。 Therefore, a gap gap L (see FIG. 10B) is formed between the first substrate set 1 including the base plate 11 and the elastic member 15 and the drive ring 31, and the blade member 20 is movably supported.

本発明は弾性部材１５を、各羽根部材２０を駆動リング３１側に押圧するように弾性力を帯びさせたことを特徴としている。このため弾性部材１５は弾性力を有するプラスチックフィルムで構成され、図示のものは前述したポリエチレン樹脂フィルムで形成してある。
そして図２及び図１０（ｂ）に示すように地板１１に弾性部材１５を湾曲させる段差部１１ｚが形成してある。図示のものは地板１１の羽根支持面１１ｘに突起を形成し段差部１１ｚを形成している。尚、この段差部１１ｚは後述する羽根部材２０の構成枚数に応じてこれと同数配置するか、図示のように羽根枚数（９枚構成）より少なく（３個所）配置するか、羽根の運動軌跡に従って配置する。また、段差部１１ｚは図示形状に拘るものでは無く、山形形状でも良く、更に実施例の様に段差部１１ｚを形成せずに予め弾性部材１５を湾曲成形させておいても良く、結果的に弾性変形された弾性部材１５に羽根部材２０を押圧する弾性力を有するようにすれば良い。 The present invention is characterized in that the elastic member 15 has an elastic force so as to press each blade member 20 toward the drive ring 31. For this reason, the elastic member 15 is formed of a plastic film having an elastic force, and the illustrated member is formed of the above-described polyethylene resin film.
Then, as shown in FIGS. 2 and 10 (b), the base plate 11 is formed with a step portion 11z for bending the elastic member 15. In the illustrated example, a protrusion is formed on the blade support surface 11x of the base plate 11 to form a step portion 11z. The number of the stepped portions 11z is the same as the number of blade members 20 to be described later, or the number of the stepped portions 11z is less than the number of blades (9 components) as shown in the drawing (three locations), or the movement locus of the blades. Arrange according to. Further, the stepped portion 11z is not limited to the shape shown in the figure, and may be a mountain shape. Further, as in the embodiment, the elastic member 15 may be curved and formed in advance without forming the stepped portion 11z. What is necessary is just to make it have the elastic force which presses the blade member 20 to the elastic member 15 elastically deformed.

「羽根部材」
図５に羽根部材２０の一例を示す。この羽根部材２０は、羽根基板２１に補助基板２４をレーザを使って溶着した構造となっている。その羽根基板２１の基端部２１ｘは上述の弾性部材１５を介して地板１１に支持される。また羽根基板２１の先端部２１ｙは光路開口１２を開閉する。このとき複数の羽根部材２１の先端部２１ｘは互いに鱗状に重なり合って先端部２１ｙで円形状の光路口径１２を形成する形状になっている。また、羽根基板２１には補助基板２４の作動ピン２３が貫通する位置決め用孔２１ｈが形成されている。 "Bane member"
FIG. 5 shows an example of the blade member 20. The blade member 20 has a structure in which an auxiliary substrate 24 is welded to a blade substrate 21 using a laser. The base end portion 21x of the blade substrate 21 is supported by the base plate 11 via the elastic member 15 described above. The tip 21y of the blade substrate 21 opens and closes the optical path opening 12. At this time, the tip portions 21x of the plurality of blade members 21 overlap each other in a scale shape so that the tip portion 21y forms a circular optical path aperture 12. The blade substrate 21 is formed with a positioning hole 21h through which the operation pin 23 of the auxiliary substrate 24 passes.

なお、前述したように各羽根部材２０は、地板１１と駆動リング３１との一方にピン状突起（ガイドピン２２及び作動ピン２３から成る各支軸）、他方に軸孔で係合され、駆動リング３１の回転で各羽根部材２０は溝孔（ガイド溝１３，１６）に沿って開閉動する。例えばポリエチレン樹脂フィルム（ＰＥＴシート）の型抜き成形で形成されている。 As described above, each blade member 20 is engaged with a pin-shaped protrusion (each support shaft including the guide pin 22 and the operation pin 23) on one of the base plate 11 and the drive ring 31, and the other is engaged with a shaft hole. As the ring 31 rotates, each blade member 20 opens and closes along the slot (guide grooves 13 and 16). For example, it is formed by die-cutting a polyethylene resin film (PET sheet).

図示の各羽根部材２０а〜２０ｉには、図５（ａ）に示すように第１のピン状突起であるガイドピン２２と第２のピン状突起である作動ピン２３が補助基板２４の表裏に植設されている。そして、図１で示す様にこのガイドピン２２は各羽根部材に地板１１側に面する位置に配置され、作動ピン２３はその反対面（後述する第２基板側）に配置されている。そして、ガイドピン２２は地板１１のガイド溝１３と、弾性部材１５のガイド溝１６に嵌合し、作動ピン２３は後述する駆動リング３１の第２の溝孔３３に嵌合する。 As shown in FIG. 5A, each of the illustrated blade members 20 a to 20 i has a guide pin 22 that is a first pin-shaped protrusion and an operating pin 23 that is a second pin-shaped protrusion on the front and back of the auxiliary substrate 24. It has been planted. As shown in FIG. 1, the guide pins 22 are arranged at positions where each blade member faces the base plate 11, and the operation pins 23 are arranged on the opposite surface (second substrate side described later). The guide pin 22 is fitted into the guide groove 13 of the base plate 11 and the guide groove 16 of the elastic member 15, and the operation pin 23 is fitted into a second groove hole 33 of the drive ring 31 described later.

＜レーザ溶着＞
また、羽根基板２１と補助基板２４とを互いに接着するレーザ溶着について説明する。まず、羽根基板２１は黒色の顔料を練り込んだ薄いシート材をプレス加工で羽根形状に打ち抜いたもので、レーザ光を吸収可能な黒色をしている。一方、補助基板２４はレーザ光が透過する透明若しくは白色の材料で形成されている。実際に、羽根基板２１は、レーザ光吸収性樹脂として、例えば、黒色塗料等を混ぜた融点が２５５℃前後のポリエチレンテレフタレートの厚み０．０５ｍｍのシート材をプレス加工で打ち抜いて作成され、補助基板２４は、レーザ光透過性樹脂として、例えば、透明なポリカーボネートのナチュラルグレード或いはガラス入りグレード等で、その融点はそれぞれ２２５℃前後と２４０℃前後で、赤外線レーザ７０の１０％以上を透過できるような特性および溶着領域の厚み０．２５ｍｍを有する。 <Laser welding>
Further, laser welding for bonding the blade substrate 21 and the auxiliary substrate 24 to each other will be described. First, the blade substrate 21 is obtained by punching a thin sheet material kneaded with a black pigment into a blade shape by press processing, and has a black color capable of absorbing laser light. On the other hand, the auxiliary substrate 24 is formed of a transparent or white material that transmits laser light. Actually, the blade substrate 21 is made by stamping a 0.05 mm thick sheet of polyethylene terephthalate having a melting point of about 255 ° C. mixed with black paint or the like as a laser-absorbing resin. 24 is, for example, a transparent polycarbonate natural grade or glass-filled resin as a laser light transmitting resin, and its melting points are around 225 ° C. and 240 ° C., respectively, and can transmit 10% or more of the infrared laser 70 It has a characteristic and weld area thickness of 0.25 mm.

そして、図５（ａ）に示すように図示２４ｚは補助基板２４に照射されたレーザ光が透過する透過領域であり、２１ｚは補助基板２４の透過領域２４ｚを透過したレーザ光を吸収する羽根基板２１の吸収領域を示し、羽根基板２１の溶着領域２１ｚと補助基板２４の透過領域２４ｚが重なった箇所２１ｍが実際に溶着可能な溶着領域と成る。そして、レーザ光を吸収した羽根基板２１の溶着領域２１ｚに発生する溶解熱によって互いに対峙した羽根基板２１の溶着領域２１ｚと補助基板２４の透過領域２４ｚの双方が溶融し互いに接着される。尚、羽根基板２１の位置決め用孔２１ｈに補助基板２４の作動ピン２３が貫通した状態で位置決めされていることから、従来、例えば一対の支軸をそれぞれレーザ溶着する構造のものに比べ一箇所のみのレーザ溶着で済むことから作業工程が短縮することが出来ると共に、直接支軸をレーザ溶着することが無いので、支軸をレーザ溶着による溶解で羽根基板２１の平面に対し傾くことが無く部品加工できる。 As shown in FIG. 5A, a reference numeral 24z is a transmission region through which the laser light applied to the auxiliary substrate 24 is transmitted, and 21z is a blade substrate that absorbs the laser light transmitted through the transmission region 24z of the auxiliary substrate 24. 21 shows an absorption region, and a portion 21m where the welding region 21z of the blade substrate 21 and the transmission region 24z of the auxiliary substrate 24 overlap each other is a welding region that can be actually welded. Then, both the welding region 21z of the blade substrate 21 and the transmission region 24z of the auxiliary substrate 24 facing each other are melted and bonded to each other by the heat of fusion generated in the welding region 21z of the blade substrate 21 that has absorbed the laser beam. In addition, since the operation pin 23 of the auxiliary substrate 24 is positioned in the positioning hole 21h of the blade substrate 21, it is positioned at only one place as compared with the conventional structure in which, for example, a pair of support shafts are laser-welded. Since the laser welding is sufficient, the work process can be shortened and the support shaft is not directly laser welded. Therefore, the support shaft is not tilted with respect to the plane of the blade substrate 21 by laser welding. it can.

この際、図６（ａ）で示す様に、羽根基板２１のレーザ光Ｒが照射される溶着領域２１ｚで溶融した溶材の一部が補助基板２４の透過領域２４ｚに形成した凹溝２４ｃ内に流出することで、羽根基板２１と補助基板２４との接着面積が増大し強く接着される。尚、この実施例では、羽根基板２１と補助基板２４との密着性の為に、補助基板２４の外形部分で羽根基板２１の平面を受ける様に一段低く窪んだ平面２４ａを形成している。そしてレーザ光を照射する透過領域２４ｚ内に凹溝２４ｃが形成される。その凹溝２４ｃは、その平面２４ａからレーザ光Ｒの中心部に突出する凸部２４ｂと、この凸部２４ｂの外周を囲む様に環状突起２４ｄが形成され、この凸部２４ｂと環状突起２４ｄによって凹溝２４ｃを形成している。 At this time, as shown in FIG. 6A, a part of the molten material melted in the welding region 21z irradiated with the laser light R of the blade substrate 21 is in a concave groove 24c formed in the transmission region 24z of the auxiliary substrate 24. By flowing out, the bonding area between the blade substrate 21 and the auxiliary substrate 24 is increased and strongly bonded. In this embodiment, for the adhesion between the blade substrate 21 and the auxiliary substrate 24, a flat surface 24 a that is recessed one step lower is formed so as to receive the flat surface of the blade substrate 21 at the outer portion of the auxiliary substrate 24. Then, a concave groove 24c is formed in the transmission region 24z irradiated with the laser light. The concave groove 24c is formed with a convex portion 24b protruding from the flat surface 24a to the center of the laser beam R and an annular protrusion 24d so as to surround the outer periphery of the convex portion 24b, and the convex portion 24b and the annular protrusion 24d. A concave groove 24c is formed.

また、図７は図６の変形例を示すもので、羽根基板２１と補助基板２４との密着性の為に、同様に補助基板２４の外形部分で羽根基板２１の平面を受ける様に一段低く窪んだ平面２４ａを形成している。そしてレーザ光を照射する透過領域２４ｚ内に凹溝２４ｅと凹溝２４ｇが形成される。その凹溝２４ｅと凹溝２４ｇは、その平面２４ａからレーザ光Ｒの中心部を中心に第１の環状突起２４ｆと、この第１の環状突起２４ｆの外周を囲む様に第２の環状突起２４ｈが形成され、この第１の環状突起２４ｆと第２の環状突起２４ｈによって凹溝２４ｅと凹溝２４ｇを形成している。この様に、凹溝を増やすことで更に羽根基板２１と補助基板２４との接着面積が増大し強く接着させることが出来る。なお、図６の凹溝２４ｃ及び図７と凹溝２４ｅと凹溝２４ｇは凹形状をしているがＶ字形状の溝であっても良い。また、環状突起２４ｄの様に環状形状で有る必要性は無いが、環状形状が最も小さな円形の溶着領域２１ｍ内に凹凸面積を形成することが可能で、しかもどの方向からの外力に対しても接着効果が高いことから環状形状としている。 Further, FIG. 7 shows a modification of FIG. 6, and for the adhesion between the blade substrate 21 and the auxiliary substrate 24, similarly, the outer portion of the auxiliary substrate 24 is similarly lowered to receive the plane of the blade substrate 21. A recessed plane 24a is formed. Then, a concave groove 24e and a concave groove 24g are formed in the transmission region 24z irradiated with laser light. The concave groove 24e and the concave groove 24g have a first annular protrusion 24f centered on the center of the laser beam R from the flat surface 24a, and a second annular protrusion 24h so as to surround the outer periphery of the first annular protrusion 24f. The first annular protrusion 24f and the second annular protrusion 24h form a concave groove 24e and a concave groove 24g. In this way, by increasing the number of concave grooves, the bonding area between the blade substrate 21 and the auxiliary substrate 24 can be further increased, and strong bonding can be achieved. In addition, although the ditch | groove 24c of FIG. 6 and FIG. 7, the ditch | groove 24e, and the ditch | groove 24g are concave shape, a V-shaped groove | channel may be sufficient. Further, although it is not necessary to have an annular shape like the annular protrusion 24d, it is possible to form an uneven area in the circular welding region 21m where the annular shape is the smallest, and against any external force from any direction. Since it has a high adhesive effect, it has an annular shape.

また、ここで使用するレーザ光は、赤外線レーザが用いられ、強度中心波長が９３０ｎｍ近辺である赤外の単波長の高出力レーザ光を照射可能であり、該レーザ光の集光作用によって樹脂を溶解して接着作用を得ることができるものを用いることが出来る。実際に、波長８００ｎｍ〜１１００ｎｍの半導体レーザ、ＹＡＧレーザなどが用いられ、その照射径（スポット径）は、０．５ｍｍ〜１ｍｍ程度に設定されている。また、赤外線レーザ７０の出力は、数ワット程度の出力に設定されており、この出力で赤外線レーザ７０を照射すれば、所定の固着強度が得られる。また、本実施の形態においては、赤外線レーザ７０の照射時間が２〜５秒程度である。 In addition, the laser beam used here is an infrared laser and can irradiate high-power laser beam having an infrared single wavelength with an intensity center wavelength of around 930 nm. What can melt | dissolve and can acquire an adhesive effect can be used. Actually, a semiconductor laser having a wavelength of 800 nm to 1100 nm, a YAG laser, or the like is used, and its irradiation diameter (spot diameter) is set to about 0.5 mm to 1 mm. The output of the infrared laser 70 is set to an output of about several watts. When the infrared laser 70 is irradiated with this output, a predetermined fixing strength can be obtained. In the present embodiment, the irradiation time of the infrared laser 70 is about 2 to 5 seconds.

そして、レーザ溶着装置は、羽根基板と補助基板を受け台（保持部材）と透明部材であるガラスとで隙間が出来ない程度に圧接した状態でレーザ溶着するもので、レーザ光照射部は、真鍮、ステンレス等、軸部材１２に比べて比熱が低くレーザ光を透過しない材料からなり、軸部材１２の直径とガタなく嵌合する円形の穴を有し、光源側にはレーザ光の進入を容易にする面取り形状部がある。また、透明部材であるガラス１４は、レーザ光を損失なく透過させると共に、発生する熱に対し耐熱性を有し、ここでは熱伝導率 ０．８６ｋｃａｌ／ｍｈ℃ の材料を使用し、受け台（保持部材）である錘部材１５は、真鍮やアルミニウム等の金属からなり、レーザヘッド１６に対しての垂直度や、平面性等が要求され、ここでは熱伝導率８５ｋｃａｌ／ｍｈ℃の真鍮材を用いた。錘部材１５は、薄板部材１１の溶着部分の裏面を支持する平坦面を有する。また、実際にレーザ溶着操作は、照射時間を固定し（例えば、１秒間）、レーザ光の出力を変化させて溶着するようにしている。 The laser welding apparatus performs laser welding in such a state that the blade substrate and the auxiliary substrate are in pressure contact with each other so that there is no gap between the cradle (holding member) and the transparent glass, and the laser beam irradiation unit is made of brass. It is made of a material that has a lower specific heat than the shaft member 12 and does not transmit laser light, such as stainless steel, has a circular hole that fits the diameter of the shaft member 12 without looseness, and allows laser light to enter the light source side easily. There is a chamfered shape part. Further, the glass 14 which is a transparent member transmits laser light without loss and has heat resistance against generated heat. Here, a material having a thermal conductivity of 0.86 kcal / mh ° C. is used, and a cradle ( The weight member 15, which is a holding member, is made of a metal such as brass or aluminum, and is required to be perpendicular to the laser head 16, flatness, etc. Here, a brass material having a thermal conductivity of 85 kcal / mh ° C. is used. Using. The weight member 15 has a flat surface that supports the back surface of the welded portion of the thin plate member 11. In actual laser welding operation, the irradiation time is fixed (for example, 1 second), and the laser beam output is changed to perform welding.

［第２基板組の構成］
図３に従って第２基板組４について説明する。第２基板組４は押さえ板４１と、補強板４２と、駆動リング３１及び押さえ板４１に固定した駆動ユニットＭで構成されている。以下各構成について説明する。 [Configuration of second substrate set]
The second substrate set 4 will be described with reference to FIG. The second substrate set 4 includes a pressing plate 41, a reinforcing plate 42, a driving ring 31 and a driving unit M fixed to the pressing plate 41. Each configuration will be described below.

「押さえ板」
押さえ板４１は図３に示すように中央部に開口４３を有するリング形状に形成され、前述の地板１１と略々同一形状に形成されている。図示の押さえ板４１は樹脂のモールド成形で、外周の一部に駆動ユニットＭの取付座４６が設けてある。この取付座４６に後述する駆動ユニットＭがビスなどで固定される。図示４５は押さえ板４１を地板１１の連結突起１４にビス止めする連結孔である。 "Presser plate"
As shown in FIG. 3, the pressing plate 41 is formed in a ring shape having an opening 43 in the center, and is formed in substantially the same shape as the above-described ground plate 11. The illustrated holding plate 41 is formed by resin molding, and a mounting seat 46 for the drive unit M is provided on a part of the outer periphery. A drive unit M, which will be described later, is fixed to the mounting seat 46 with screws or the like. 45 shown in the figure is a connecting hole for screwing the pressing plate 41 to the connecting projection 14 of the base plate 11.

「補強板」
補強板４２は、図３に示すように金属などの比較的強靭な板材で構成され、樹脂製の押さえ板４１を補強する。従って押さえ板４１に十分な強度が得られるときには補強板４２を省くことが可能である。この補強板４２は押さえ板４１と略々同一形状に形成され、中央に開口４４が形成してある。 "Reinforcement plate"
As shown in FIG. 3, the reinforcing plate 42 is made of a relatively strong plate material such as metal, and reinforces the resin pressing plate 41. Therefore, the reinforcing plate 42 can be omitted when the holding plate 41 has sufficient strength. The reinforcing plate 42 is formed in substantially the same shape as the pressing plate 41 and has an opening 44 in the center.

上記押さえ板４１の開口４３と補強板４２の開口４４は、いずれも光路開口１２の開口径Ｄより大きく設定してあり、開口４３の開口径Ｄ１と開口４４の開口径Ｄ２と光路開口１２の開口径Ｄとは、Ｄ２≧Ｄ１＞Ｄに設定されている。 Both the opening 43 of the pressing plate 41 and the opening 44 of the reinforcing plate 42 are set to be larger than the opening diameter D of the optical path opening 12, and the opening diameter D 1 of the opening 43, the opening diameter D 2 of the opening 44, and the optical path opening 12. The opening diameter D is set to D2 ≧ D1> D.

「駆動リング」
駆動リング３１は図３に示すように例えば樹脂のモールド成形で中央部に光路開口１２を有するリング形状（以下「駆動リング」という）に形成されている。この駆動リング３１は、補強板４２を介して押さえ板４１に回動自在に取り付けられている。
このため駆動リング３１には光路開口１２の周縁にフランジ３２と係合突起３４が形成してある。フランジ３２は押さえ板４１の開口４３と補強板４２の開口４４に嵌合し、光路開口１２の中心と一致する回転中心で回動する。また係合突起３４は補強板４２と摺接する面に形成され両者を円滑に摺動するのを補助している。 "Drive ring"
As shown in FIG. 3, the drive ring 31 is formed in a ring shape (hereinafter referred to as “drive ring”) having an optical path opening 12 in the center by resin molding, for example. The drive ring 31 is rotatably attached to the holding plate 41 via a reinforcing plate 42.
For this reason, the drive ring 31 has a flange 32 and an engaging projection 34 formed on the periphery of the optical path opening 12. The flange 32 is fitted in the opening 43 of the pressing plate 41 and the opening 44 of the reinforcing plate 42, and rotates around the rotation center that coincides with the center of the optical path opening 12. Further, the engaging protrusion 34 is formed on a surface that is in sliding contact with the reinforcing plate 42 and assists in smoothly sliding the two.

駆動リング３１は上述のように押さえ板４１に回動自在に組み込まれ、その周縁の一部には受動歯３５が形成してある。この受動歯３５は押さえ板４１の取付座４６に取付けられた後述する駆動ユニットＭの駆動歯車５３と噛合する位置に設けられている。 As described above, the drive ring 31 is rotatably incorporated in the pressing plate 41, and passive teeth 35 are formed on a part of the periphery thereof. The passive teeth 35 are provided at positions that mesh with a drive gear 53 of a drive unit M, which will be described later, attached to the attachment seat 46 of the presser plate 41.

上記駆動リング３１には、各羽根部材２０а〜２０ｉに植設された作動ピン２３と嵌合する第２の溝孔３３が光路開口１２の周縁に設けられている。この第２の溝孔３３は羽根部材２０の枚数に応じて光路開口１２の周縁に複数（図示のものは９個所）配置されている。 The drive ring 31 is provided with a second slot 33 at the periphery of the optical path opening 12 for fitting with the operating pin 23 implanted in each of the blade members 20a to 20i. A plurality of the second groove holes 33 are arranged on the periphery of the optical path opening 12 according to the number of the blade members 20 (9 in the drawing).

このような構成において駆動リング３１は、押さえ板４１に回動自在に支持され、駆動ユニットＭの駆動歯車５３によって所定角度回転することとなる。そして駆動リング３１の回転は各羽根部材２０а〜２０ｉに伝達されることとなる。 In such a configuration, the drive ring 31 is rotatably supported by the pressing plate 41 and is rotated by a predetermined angle by the drive gear 53 of the drive unit M. The rotation of the drive ring 31 is transmitted to the blade members 20a to 20i.

［駆動ユニットの構成］
図１３に駆動ユニットＭの一実施形態を示す。同図の駆動ユニットＭはマグネットロータ５０と、ステータコイル５１と駆動回転軸５２と、駆動歯車５３と、ヨーク５４で構成される所謂パルスモータである。マグネットロータ５０は駆動回転軸５２と永久磁石５６を一体化して構成され、駆動回転軸５２を挟みマグネットロータ５０の周囲に等間隔にコアー５５にコイル５８を巻回してなるステータコイル５１が設けられている。永久磁石５６は外周にＮＳ極が他極着磁形成され、駆動回転軸５２には駆動歯車５３が取り付けられている。 [Configuration of drive unit]
FIG. 13 shows an embodiment of the drive unit M. The drive unit M shown in the figure is a so-called pulse motor including a magnet rotor 50, a stator coil 51, a drive rotating shaft 52, a drive gear 53, and a yoke 54. The magnet rotor 50 is constructed by integrating a drive rotating shaft 52 and a permanent magnet 56, and a stator coil 51 is provided around the magnet rotor 50 with coils 58 wound around a core 55 at equal intervals. ing. The permanent magnet 56 has an NS pole formed on the outer periphery thereof, and a drive gear 53 is attached to the drive rotary shaft 52.

このように構成された駆動ユニットＭは押さえ板４１の取付座４６にブラケット５７をネジなどで固定する。そして駆動歯車５３を駆動リング３１の受動歯３５に噛合する。これによって駆動リング３１は、図３時計方向と反時計方向に所定角度往復動し、絞り羽根２１を開閉動する。 The drive unit M configured in this manner fixes the bracket 57 to the mounting seat 46 of the holding plate 41 with screws or the like. Then, the drive gear 53 is engaged with the passive teeth 35 of the drive ring 31. As a result, the drive ring 31 reciprocates a predetermined angle in the clockwise direction and the counterclockwise direction in FIG.

［組立て状態の説明］
図１の装置は、第１基板組１の上に羽根組２、駆動リング３１、次いで第２基板組４の手順で組み立てる場合を示す。図１に示すように駆動ユニットＭを押さえ板４１にビスなどで固定する。そして地板１１を作業台にセットし、地板上に弾性部材１５を取り付ける。次いで第１基板組１の上に各羽根部材２０а〜２０ｉを重ね合わせる。 [Description of assembled state]
The apparatus of FIG. 1 shows a case where the blade assembly 2, the drive ring 31, and then the second substrate assembly 4 are assembled on the first substrate assembly 1. As shown in FIG. 1, the drive unit M is fixed to the holding plate 41 with screws or the like. Then, the base plate 11 is set on the work table, and the elastic member 15 is attached on the base plate. Next, the blade members 20a to 20i are overlaid on the first substrate set 1.

このとき各羽根部材２０のガイドピン２２を地板１１のガイド溝１３内に収納する。このとき所定枚数の羽根部材２０を光路開口１２の外周に第１羽根２１ａ、第２羽根２１ｂ、第３羽根２１ｃの順に各羽根部材の隣接端を重ね合わせて鱗状に配列する。そして最後に重ね合わせる第ｎ番目（第９羽根）の羽根部材２０ｉを第ｎ−１番目の羽根部材の上に重ねる際に羽根部材の先端部２１yを第１羽根２１ａの基端部２１ｘの下に差し込む。
このように羽根組２を組み立てることによって第１〜第ｎの羽根部材２０а〜２０ｉの何れの羽根部材２０も円周方向の両端縁が一方は隣接する羽根部材の上側に重ねられ、他方は隣接する羽根部材の下側に重ねられ、所謂鱗状に積み重ねられることとなる。 At this time, the guide pin 22 of each blade member 20 is accommodated in the guide groove 13 of the main plate 11. At this time, a predetermined number of blade members 20 are arranged on the outer periphery of the optical path opening 12 in the form of a scale by overlapping the adjacent ends of the blade members in the order of the first blade 21a, the second blade 21b, and the third blade 21c. Then, when the n-th (9th blade) blade member 20i to be stacked last is stacked on the (n-1) -th blade member, the tip end portion 21y of the blade member is placed under the base end portion 21x of the first blade 21a. Plug in.
By assembling the blade assembly 2 in this way, both the edge members in the circumferential direction of each of the first to nth blade members 20a to 20i are overlapped on the upper side of the adjacent blade member, and the other is adjacent. It is piled up on the lower side of the wing member, and is piled up in a so-called scale shape.

次に羽根組２の上に駆動リング３１を取り付ける。このとき各羽根部材の作動ピン２３を駆動リング３１の溝孔３３に勘合させる。次いで第２基板組４を光路開口１２を中心に回動可能に取り付ける。このとき駆動ユニットＭの駆動歯車５３と駆動リング３１の受動歯３５が噛合するように駆動リング３１の係合突起３４を押さえ板４１の開口４３に差し込み、駆動リング３１を押さえ板４１に回動自在に取り付ける。 Next, the drive ring 31 is attached on the blade set 2. At this time, the operating pin 23 of each blade member is fitted into the groove 33 of the drive ring 31. Next, the second substrate set 4 is attached so as to be rotatable about the optical path opening 12. At this time, the engaging protrusion 34 of the driving ring 31 is inserted into the opening 43 of the pressing plate 41 so that the driving gear 53 of the driving unit M and the passive tooth 35 of the driving ring 31 are engaged, and the driving ring 31 is rotated to the pressing plate 41. Install freely.

そこで地板１１と押さえ板４１をビス等の固定手段で固定する。これによって第１基板（地板）１１、羽根組２（羽根部材２０）、駆動リング３１、第２基板（押さえ板）４１が一体化されたユニットとして光量調整装置Ａが組上げられる。 Therefore, the base plate 11 and the holding plate 41 are fixed by fixing means such as screws. As a result, the light amount adjusting device A is assembled as a unit in which the first substrate (base plate) 11, the blade assembly 2 (blade member 20), the drive ring 31, and the second substrate (presser plate) 41 are integrated.

このような羽根部材の重ね合わせで、光路開口を最大口径とすると図９（ａ）に示すように地板の光路開口１２の外側に各羽根部材が回動し、最小口径に絞り込むと図１０（ａ）に示すように鱗状に積み重ねられた各羽根部材の先端部２１ｙは互いに支え合うことで、地板に支えられなくとも光路開口１２の平面に対しほぼ平行な姿勢を保つこととなる。このとき、各羽根部材２０а〜２０ｉの先端部２１ｙは他の先端部により地板１１側に反られ、通常なら各羽根部材２０а〜２０ｉは基端部２１ｘから先端部２１ｙに反り上がり、その基端部２１ｘが地板１１と駆動リング３１との間隔（Ｌ）の間で傾くところ、弾性部材１５の弾性力で基端部２１ｘが駆動リング３１側に押圧されることで、基端部２１ｘは地板１１と駆動リング３１との間隔（Ｌ）の間でほぼ平行状態に保たれる。 When the optical path opening is set to the maximum aperture due to such overlapping of the blade members, as shown in FIG. 9A, each blade member rotates to the outside of the optical path aperture 12 of the main plate, and when the aperture is narrowed down to the minimum aperture, FIG. As shown to a), the front-end | tip part 21y of each blade member piled up in scale shape supports each other, and will maintain a substantially parallel attitude | position with respect to the plane of the optical path opening 12, even if not supported by a ground plane. At this time, the distal end portion 21y of each blade member 20a to 20i is warped toward the main plate 11 by the other distal end portion. Normally, each blade member 20a to 20i is warped from the proximal end portion 21x to the distal end portion 21y, and its proximal end. When the portion 21x is inclined between the distance (L) between the ground plane 11 and the drive ring 31, the proximal end portion 21x is pressed toward the drive ring 31 by the elastic force of the elastic member 15, so that the proximal end portion 21x becomes the ground plane. 11 and the distance (L) between the drive ring 31 and the substantially parallel state.

［組立て状態の他の説明］
以上説明した組立て方法の他の方法について説明する。上記の組立て方法では専用の作業台を使って組み立てるのに対し、この組立て方法では組み立てのために専用の作業台は必要とせず図１の装置を上下逆にした状態で組み立てる方法で、第２基板組４の上に駆動リング３１、羽根組２、次いで第１基板組１の手順で組み立てる。図１を使って説明すると、まず駆動ユニットＭを押さえ板４１にビスなどで固定し、その上に駆動リング３１の係合突起３４を押さえ板４１の開口４３に嵌め込むとともに、駆動ユニットＭの駆動歯車５３と駆動リング３１の受動歯３５が噛合するように駆動リング３１の係合突起３４を押さえ板４１の開口４３に差し込み、駆動リング３１を押さえ板４１に回動自在に取り付ける。そして第２基板組４体を作業台にセットし、駆動リング３１上に各羽根部材２０а〜２０ｉから成る羽根組２を重ね合わせる。 [Other description of assembled state]
Another method of the assembly method described above will be described. In the above assembly method, a dedicated work table is used for assembly. In this assembly method, a dedicated work table is not required for assembly, and the apparatus shown in FIG. The substrate ring 4 is assembled by the procedure of the drive ring 31, the blade group 2, and then the first substrate group 1. Referring to FIG. 1, first, the drive unit M is fixed to the holding plate 41 with screws or the like, and the engaging protrusion 34 of the driving ring 31 is fitted into the opening 43 of the holding plate 41 on the drive unit M. The engagement protrusion 34 of the drive ring 31 is inserted into the opening 43 of the press plate 41 so that the drive gear 53 and the passive tooth 35 of the drive ring 31 are engaged with each other, and the drive ring 31 is rotatably attached to the press plate 41. Then, the second substrate set 4 is set on the work table, and the blade set 2 composed of the blade members 20a to 20i is superimposed on the drive ring 31.

このとき光路開口１２の外周に各羽根部材の作動ピン２３を駆動リング３１の溝孔３３に勘合させながら、羽根部材２０ａを置き、次に羽根部材２０ａが下になるよう羽根部材２０ｂを上に、引き続き羽根部材２０ｃ〜２１ｉを上に順次重ね、最後の羽根部材２０ｉの羽根部材２０ａに隣接する箇所を羽根部材２０ａ下に差し入れることで鱗状に配列することによって第１〜第ｎの羽根部材２０а〜２０ｉの何れの羽根部材２０も円周方向の両端縁が一方は隣接する羽根部材の上側に重ねられ、他方は隣接する羽根部材の下側に重ねられ、所謂鱗状に積み重ねられることとなる。 At this time, the blade member 20a is placed on the outer periphery of the optical path opening 12 while engaging the operating pin 23 of each blade member with the groove 33 of the drive ring 31, and then the blade member 20b is placed upward so that the blade member 20a is on the lower side. The blade members 20c to 21i are successively stacked one after another, and the first to nth blade members are arranged in a scale shape by inserting a portion adjacent to the blade member 20a of the last blade member 20i under the blade member 20a. In any blade member 20 of 20a to 20i, both circumferential edges are overlapped on the upper side of the adjacent blade member, and the other is stacked on the lower side of the adjacent blade member, and are stacked in a so-called scale shape. .

次に羽根組２の上から各羽根部材２０のガイドピン２２が地板１１のガイド溝１３内に収納するように弾性部材１５を取り付け、その上から同様に地板１１を被せ第１基板組１を組み立てる。 Next, the elastic member 15 is attached so that the guide pin 22 of each blade member 20 is accommodated in the guide groove 13 of the base plate 11 from above the blade set 2, and the base plate 11 is similarly covered from above to cover the first substrate set 1. assemble.

そこで地板１１と押さえ板４１をビス等の固定手段で固定する。これによって第１基板（地板）１１、羽根組２（羽根部材２０）、駆動リング３１、第２基板（押さえ板）４１が一体化されたユニットとして光量調整装置Ａを組上げることもできる。 Therefore, the base plate 11 and the holding plate 41 are fixed by fixing means such as screws. Accordingly, the light amount adjusting device A can be assembled as a unit in which the first substrate (base plate) 11, the blade assembly 2 (blade member 20), the drive ring 31, and the second substrate (presser plate) 41 are integrated.

［羽根部材の開閉動作］
次に、図５及び図８に従って羽根部材の開閉動作について説明する。図８（ａ）は光路開口１２の周囲に複数の羽根部材２０を配置した絞り全開放状態を示し、図８（ｂ）はこの複数の羽根部材２０の１枚の開閉動作状態を示す。
図８（ａ）のように光路開口１２の周囲には、光路中心Ｏを基準に所定角度隔てた位置（図示のものは９枚の羽根部材２０を角度θ＝４０度ずつ隔てた位置）に複数の羽根部材２０が鱗状に配置されている。 [Opening and closing operation of blade member]
Next, the opening / closing operation of the blade member will be described with reference to FIGS. FIG. 8A shows a full aperture state in which a plurality of blade members 20 are arranged around the optical path opening 12, and FIG. 8B shows a single open / close operation state of the plurality of blade members 20.
As shown in FIG. 8A, around the optical path opening 12, the optical path center O is located at a position separated by a predetermined angle (the illustrated one is a position where nine blade members 20 are separated by an angle θ = 40 degrees). A plurality of blade members 20 are arranged in a scale shape.

各羽根部材２０は地板１１に形成したガイド溝１３（第１の溝孔）にガイドピン２２が嵌合してある。これと共に各羽根部材２０に形成された作動ピン２３は、駆動リング３１の溝孔（嵌合孔）３３に嵌合されている。 Each blade member 20 has a guide pin 22 fitted in a guide groove 13 (first groove hole) formed in the base plate 11. At the same time, the operating pin 23 formed on each blade member 20 is fitted in a slot (fitting hole) 33 of the drive ring 31.

図８（ｂ）に示すように駆動リング３１が光路中心Ｏを中心に前述の駆動ユニットＭによって所定角度範囲で時計方向と反時計方向に回転する。このとき図５（ｃ）に示すように作動ピン２３は駆動リング３１の回転で図示光路中心Ｏから半径Ｌの円弧軌跡ｘ−ｘで図示ｃ点からｄ点に同図時計方向に回転移動する。またガイドピン（第１の突起）２２はガイド溝１６に沿って図示ｙ−ｙ軌跡でａ点からｂ点に移動する。 As shown in FIG. 8B, the drive ring 31 is rotated clockwise and counterclockwise within a predetermined angle range by the drive unit M described above about the optical path center O. At this time, as shown in FIG. 5C, the operating pin 23 rotates in the clockwise direction from the c point to the d point in the figure along the arc locus xx having the radius L from the optical path center O by the rotation of the drive ring 31. . Further, the guide pin (first protrusion) 22 moves along the guide groove 16 from the point a to the point b along the illustrated yy locus.

この作動ピン（第２の突起）２３とガイドピン（第１の突起）２２の移動で羽根部材２０は実線で示す絞り全開放状態から破線で示す小絞り状態に開閉動する。従って駆動ユニットＭに供給する電流に応じて羽根部材２０は、小絞り状態から絞り全開放状態の間で任意の開口径に開閉し、光路開口１２を通過する光量を大小調整することとなる。 The movement of the operating pin (second protrusion) 23 and the guide pin (first protrusion) 22 causes the blade member 20 to open and close from the fully open state of the aperture indicated by the solid line to the small aperture state indicated by the broken line. Accordingly, the blade member 20 opens and closes to an arbitrary aperture diameter between the small aperture state and the fully open aperture state in accordance with the current supplied to the drive unit M, and adjusts the amount of light passing through the optical path aperture 12 in magnitude.

［作用の説明］
次に図９及び図１０に従って図１に示す装置の作用について説明する。
光量調整装置Ａは、地板１１、弾性部材１５、羽根部材２０、駆動リング３１、押さえ板４１の順に積層状に組み上げられ、地板（第１基板）１１と押さえ板（第２基板）４１がビスなどの固定手段で固定されている。
この状態で弾性部材１５と駆動リング３１の間のギャップＧａは地板１１に設けた連結突起１４（第２基板に設けても良い）の高さで設定される（図９（ｂ）参照）。この連結突起の高さ（Ｈ）は、弾性部材１５の厚さをｔ１、駆動リング３１の厚さをｔ２、羽根部材の厚さをｔ３、羽根部材の最大重なり枚数をｍ、羽根部材相互間の作動クリアランスをｄｃとすると、［Ｈ＝ｔ１＋ｔ２＋ｔ３・ｍ＋ｄｃ・ｍ］となるように設定されている。 [Description of action]
Next, the operation of the apparatus shown in FIG. 1 will be described with reference to FIGS.
The light amount adjusting device A is assembled in the order of the base plate 11, the elastic member 15, the blade member 20, the drive ring 31, and the press plate 41, and the base plate (first substrate) 11 and the press plate (second substrate) 41 are screwed. It is fixed by fixing means such as.
In this state, the gap Ga between the elastic member 15 and the drive ring 31 is set by the height of the connection protrusion 14 (may be provided on the second substrate) provided on the ground plane 11 (see FIG. 9B). The height (H) of the connecting projection is such that the thickness of the elastic member 15 is t1, the thickness of the drive ring 31 is t2, the thickness of the blade member is t3, the maximum number of overlapping blade members is m, and between the blade members Is set such that [H = t1 + t2 + t3 · m + dc · m].

このような条件のもとで、羽根部材２０を図９（ａ）の絞り全開状態から図１０（ａ）の小絞り状態へと開閉動すると、弾性部材１５と駆動リング３１との間で図９（ａ）で示すように絞り全開状態で各羽根部材２０а〜２０ｉはそれぞれ上に３枚が重ねられ、図１０（ａ）で示すように小絞り状態で各羽根部材２０а〜２０ｉはそれぞれ下に３枚が差し込まれた状態となっている。
例えば図９（ａ）に示すように羽根が全開状態のときには、羽根部材２０ａの先端部２１ｙの上には羽根部材２０ｂの基端部が、その上に羽根部材２０ｃの基端部の２枚が重なっている。また図１０（ａ）に示すように羽根部材が小絞り状態のときには、羽根部材２０ａの基端部２１ｘの下には羽根部材２０ｂの１枚が介在するのに対し、羽根部材２０ａの先端部２１ｙの下には羽根部材２０ｂの先端部が、その下に羽根部材２０ｃの先端部が、更にその下に羽根部材２０ｄの先端部が差し込まれた状態となっている。従って、地板１１の光路開口１２の周縁近傍では羽根部材２０が最低３枚程度重なった状態と成る。 Under such conditions, when the blade member 20 is opened and closed from the fully-open state of FIG. 9A to the small-diaphragm state of FIG. 10A, the blade member 20 is moved between the elastic member 15 and the drive ring 31. As shown in FIG. 9 (a), the three blade members 20a to 20i are stacked on each other when the aperture is fully open, and the blade members 20a to 20i are respectively moved downward when the aperture is small as shown in FIG. 10 (a). It is in the state where three sheets are inserted in.
For example, as shown in FIG. 9 (a), when the blade is fully open, the base end portion of the blade member 20b is placed on the tip portion 21y of the blade member 20a, and the base end portion of the blade member 20c is placed thereon. Are overlapping. Also, as shown in FIG. 10A, when the blade member is in the small aperture state, one blade member 20b is interposed under the base end portion 21x of the blade member 20a, whereas the tip end portion of the blade member 20a. The tip of the blade member 20b is inserted below 21y, the tip of the blade member 20c is inserted below it, and the tip of the blade member 20d is inserted below it. Therefore, at least three blade members 20 are overlapped in the vicinity of the periphery of the optical path opening 12 of the base plate 11.

このことから、弾性部材１５と駆動リング３１との間のギャップＧａは、羽根部材の厚さ（ｔ３）と重なり枚数（ｎ）の積と羽根部材相互間の作動クリアランス（ｄｃ）と重なり枚数（ｎ）の積の総和［Ｇａ＝ｔ３・ｎ＋ｄｃ・ｎ］となる。
従って羽根部材の重なり枚数が少ないときにはギャップＧａが小さくて良いのに、弾性部材１５と駆動リング３１とのギャップは最大重なり枚数で設定される。 From this, the gap Ga between the elastic member 15 and the drive ring 31 is the product of the thickness (t3) of the blade member and the overlapping number (n), the operating clearance (dc) between the blade members and the overlapping number ( The sum of the products of n) is [Ga = t3 · n + dc · n].
Accordingly, the gap Ga may be small when the number of overlapping blade members is small, but the gap between the elastic member 15 and the drive ring 31 is set to the maximum number of overlapping members.

その結果、図１７に示すように羽根部材の全開状態或いは全開状態に接近した開口状態では羽根部材の重なり枚数に比べ大きなギャップが形成されるため羽根部材１０３ａが傾き易い。この状態を図１７（ｂ）に示す。これに対し、図９（ｂ）に示すように羽根部材２０と地板１１との間に介在する弾性部材１５が図示のように羽根部材を駆動リング３１側に押圧するため羽根部材２０ａの傾きは抑制される。 As a result, as shown in FIG. 17, in the fully open state of the blade member or in the open state approaching the fully open state, a larger gap is formed than the number of overlapping blade members, and thus the blade member 103a is easily tilted. This state is shown in FIG. On the other hand, as shown in FIG. 9B, since the elastic member 15 interposed between the blade member 20 and the ground plane 11 presses the blade member toward the drive ring 31 as shown, the inclination of the blade member 20a is It is suppressed.

また図１０（ａ）に示す羽根部材の小絞り状態或いは小絞り状態に接近した絞り開口状態では羽根部材２０の先端部２１ｙが他の羽根部材２０の先端部２１ｙとの重なりによって反らされ、この先端部２１ｙの反りで基端部２１ｘが傾こうとするのを弾性部材１５が図示のように羽根部材を駆動リング３１側に押圧するため羽根部材２０の傾きは抑制され傾くことがない。 Further, in the small aperture state of the blade member shown in FIG. 10A or the aperture opening state approaching the small aperture state, the tip portion 21y of the blade member 20 is warped by overlapping with the tip portions 21y of the other blade members 20, Since the elastic member 15 presses the blade member toward the drive ring 31 as shown in the drawing, the inclination of the blade member 20 is suppressed and does not incline because the elastic member 15 presses the blade 21 toward the drive ring 31 as shown in FIG.

なお、弾性部材１５に弾性力を付与するため地板１１の羽根支持面１１ｘに段差部１１ｚを形成する場合について説明したが、弾性部材１５に切り起し弾性片を設けることによって支持面の段差を省くことが出来る。 In addition, although the case where the level | step-difference part 11z was formed in the blade | wing support surface 11x of the base plate 11 in order to give elastic force to the elastic member 15 was demonstrated, the level | step difference of a support surface is formed by cutting and raising to the elastic member 15 and providing an elastic piece. It can be omitted.

［弾性部材の異なる実施形態］
以上説明した弾性部材は重なり枚数が変化する羽根部材を駆動リング側に押圧するように地板と羽根部材の間に配置し、地板に設けた段差部１１ｚで弾性力を付与する場合を示した。この形態に換えて次の実施形態を採用することも可能である。図２、図３に示す実施形態と同一の構成については同一の符合を付して説明を省略する。 [Different Embodiments of Elastic Member]
The elastic member demonstrated above has arrange | positioned between a ground plate and a blade member so that the blade member from which the number of overlappings changes may be pressed to the drive ring side, and showed the case where an elastic force is provided with the level | step-difference part 11z provided in the ground plate. It is also possible to adopt the following embodiment instead of this form. The same components as those in the embodiment shown in FIGS. 2 and 3 are denoted by the same reference numerals and description thereof is omitted.

図１２に示すように、地板１１、羽根部材２０、駆動リング３１、押さえ板４１の順に積層状に組み立てる。このとき羽根部材２０と駆動リング３１との間に弾性部材３６を配置する。この弾性部材３６は例えば次のように構成する。 As shown in FIG. 12, the base plate 11, the blade member 20, the drive ring 31, and the pressing plate 41 are assembled in this order. At this time, the elastic member 36 is disposed between the blade member 20 and the drive ring 31. The elastic member 36 is configured as follows, for example.

［弾性部材の構成］
弾性部材３６は図１３（ｂ）に示すように中央に光路開口１２を有する樹脂フィルム（例えばポリエチレンなどの樹脂フィルム）で形成され、駆動リング３１と羽根部材２０の間に介在される。
これは羽根部材２０と駆動リング３１が直接接触するのを避け、羽根部材の円滑な開閉運動を得るためであり、同時に弾性部材３６には切り起し弾性片３６ｘが設けられこの弾性片の作用で羽根部材２０を対向する地板１１側に押圧している。
また、図示の弾性部材３６は、羽根部材２０と同一素材で構成している。これは互いに摺動する羽根部材と摺動リングを同一材質にすることによって熱変化などの温度特性は羽根部材と実質的に同一となり、羽根部材と摺動リングは同一素材で帯電列が同一であるから両者が摺動しても静電気を帯びることが少ない。 [Configuration of elastic member]
As shown in FIG. 13B, the elastic member 36 is formed of a resin film (for example, a resin film such as polyethylene) having the optical path opening 12 at the center, and is interposed between the drive ring 31 and the blade member 20.
This is to avoid direct contact between the blade member 20 and the drive ring 31 and to obtain a smooth opening and closing movement of the blade member. At the same time, the elastic member 36 is cut and raised to be provided with an elastic piece 36x. The blade member 20 is pressed to the opposite ground plate 11 side.
The illustrated elastic member 36 is made of the same material as the blade member 20. This is because, by using the same material for the blade member and the sliding ring that slide relative to each other, the temperature characteristics such as thermal changes are substantially the same as the blade member, and the blade member and the sliding ring are the same material and have the same charge train. Therefore, even if both slide, they are less likely to be charged with static electricity.

上記弾性部材３６は駆動リング３１と同様なリング形状に形成されている。この弾性部材３６には駆動リング３１の嵌合孔３３と合致する位置に係合孔３７が設けてある。
この駆動リング３１の嵌合孔３３と弾性部材３６の係合孔３７とは、各羽根部材に形成した第２の突起（作動ピン）２３の外径ｄｅ、駆動リング３１の嵌合孔３３の直径ｄｄ、弾性部材３６の係合孔３７の直径ｄｆとの関係を次式のように設定している。
ｄｅ≦ｄｄ＜ｄｆ（式１）
つまり、羽根部材の作動ピン（第２の突起）２３の外径ｄｅと駆動リング３１の嵌合孔３３の直径ｄｄが互いに適合するように嵌合し、弾性部材３６の係合孔３７の直径ｄｆは、作動ピン（第２の突起）２３の外径ｄｅより十分大きく設定している。
これによって羽根部材の作動ピン（第２の突起）２３は実質的に駆動リング３１の嵌合孔３３と嵌合し、弾性部材３６の係合孔３７とは係合しないこととなる。 The elastic member 36 is formed in a ring shape similar to the drive ring 31. The elastic member 36 is provided with an engagement hole 37 at a position matching the fitting hole 33 of the drive ring 31.
The engagement hole 33 of the drive ring 31 and the engagement hole 37 of the elastic member 36 are formed such that the outer diameter de of the second protrusion (operating pin) 23 formed on each blade member and the engagement hole 33 of the drive ring 31. The relationship between the diameter dd and the diameter df of the engagement hole 37 of the elastic member 36 is set as follows.
de ≦ dd <df (Formula 1)
That is, the outer diameter de of the operating pin (second protrusion) 23 of the blade member and the diameter dd of the fitting hole 33 of the drive ring 31 are fitted to each other, and the diameter of the engaging hole 37 of the elastic member 36 is fitted. df is set sufficiently larger than the outer diameter de of the operating pin (second protrusion) 23.
As a result, the operating pin (second protrusion) 23 of the blade member is substantially fitted into the fitting hole 33 of the drive ring 31 and is not engaged with the engaging hole 37 of the elastic member 36.

このように駆動リング３１の嵌合孔３３（直径ｄｄ）を弾性部材３６の係合孔３７（直径ｄｆ）より小径に設定したのは次の理由による。弾性部材３６は駆動リング３１と羽根部材２０との間に介在する。このため羽根部材２０の開閉運動、或いは駆動リング３１の回動運動で弾性部材３６も回転運動する。 The reason why the fitting hole 33 (diameter dd) of the drive ring 31 is set smaller than the engaging hole 37 (diameter df) of the elastic member 36 is as follows. The elastic member 36 is interposed between the drive ring 31 and the blade member 20. Therefore, the elastic member 36 also rotates by the opening / closing movement of the blade member 20 or the rotation movement of the drive ring 31.

また弾性部材３６には、適宜個所（例えば１２０度間隔で３個所）に切り起し弾性片３６ｘが形成してある。この弾性片３６ｘは弾性部材の羽根部材に接する面から反対側の駆動リングに接するように湾曲した折り曲げ片で構成されている。
従って弾性部材３６は切り起し弾性片３６ｘが駆動リング３１に当接して羽根部材２０を地板側に押圧することとなる。その作用は図９及び図１０に従って説明したものと同様となる。 The elastic member 36 is formed with elastic pieces 36x that are cut and raised at appropriate places (for example, three places at intervals of 120 degrees). The elastic piece 36x is formed of a bent piece that is curved so as to contact the drive ring on the opposite side from the surface of the elastic member that contacts the blade member.
Therefore, the elastic member 36 is cut and raised, and the elastic piece 36x comes into contact with the drive ring 31 and presses the blade member 20 to the ground plane side. The operation is the same as that described with reference to FIGS.

［撮像装置］
次に上述の光量調整装置Ａを用いた撮像装置について図１５に基づいて説明する。
スチールカメラ、ビデオカメラ等のレンズ鏡筒に前述の光量調整装置を組込む。図示Ｂは撮影光路に配置した前レンズ、Ｃは後レンズであり、これ等のレンズで被写体像を結像しその結像面に撮像手段Ｓを配置する。撮像手段ＳとしてはＣＣＤなどの固体撮像素子或いは感光フィルムなどを用いる。
そして制御はＣＰＵ制御回路、露出制御回路で実行するように構成する。図示のＳＷ１はメイン電源スイッチであり、ＳＷ２はシャッタレリーズスイッチを示す。カメラ装置としての制御には、この他オートフォーカス回路などが用いられるが良く知られた構成であるので説明を省く。 [Imaging device]
Next, an imaging device using the above-described light amount adjusting device A will be described with reference to FIG.
The aforementioned light amount adjusting device is incorporated into a lens barrel of a still camera, a video camera or the like. B in the figure is a front lens disposed in the photographing optical path, and C is a rear lens. The image of the subject is formed by these lenses, and the image pickup means S is disposed on the image formation plane. As the imaging means S, a solid-state imaging device such as a CCD or a photosensitive film is used.
The control is executed by the CPU control circuit and the exposure control circuit. In the figure, SW1 is a main power switch, and SW2 is a shutter release switch. In addition, an autofocus circuit or the like is used for the control as the camera device, but since it has a well-known configuration, description thereof is omitted.

そこでレンズ鏡筒に組込まれた前レンズＢと後レンズＣとの間に絞り装置Ｅとシャッタ装置（不図示）を組込む。この絞り装置Ｅには前述の羽根部材２０及び駆動ユニットＭが組込まれている。
そこで制御ＣＰＵは露出量、シャッタスピードなどの撮影条件を設定し、露出制御回路に指示信号を発する。まず露光量は露出制御回路が制御ＣＰＵからの指示信号で駆動装置Ｍのコイルに所定方向の電流を供給する。すると羽根部材２０は駆動装置Ｍの回転を駆動歯車５３を介して作動ピン２３から伝達され、最適露光量に光路開口１２を絞る。 Therefore, a diaphragm device E and a shutter device (not shown) are assembled between the front lens B and the rear lens C incorporated in the lens barrel. The diaphragm device E incorporates the blade member 20 and the drive unit M described above.
Therefore, the control CPU sets shooting conditions such as the exposure amount and shutter speed, and issues an instruction signal to the exposure control circuit. First, the exposure control circuit supplies a current in a predetermined direction to the coil of the driving device M in response to an instruction signal from the control CPU. Then, the blade member 20 transmits the rotation of the driving device M from the operating pin 23 via the driving gear 53 and narrows the optical path opening 12 to the optimum exposure amount.

次いで、レリーズ釦が操作されると、ＣＣＤなどの固体撮像素子の場合すでにチャージされている電荷を放出し、撮影を開始する。そこでシャッタ駆動回路は制御ＣＰＵから予め設定された露光時間の経過後、シャッタ動作開始の信号を受け駆動装置のコイルにシャッタ閉成方向の電流を供給する。このシャッタ動作の後、撮像手段ＳがＣＣＤ（固体撮像素子）の場合は画像処理回路に画像データが転送されメモリなどに蓄積される。   Next, when the release button is operated, in the case of a solid-state imaging device such as a CCD, the charge that has already been charged is released, and photographing is started. Accordingly, the shutter driving circuit supplies a current in the shutter closing direction to the coil of the driving device in response to a shutter operation start signal after a preset exposure time has elapsed from the control CPU. After this shutter operation, when the imaging means S is a CCD (solid-state imaging device), the image data is transferred to the image processing circuit and stored in a memory or the like.

Ａ 光量調整装置
Ｍ 駆動モータ
Ｌ 羽根部材の支持間隙
Ｒ レーザ光
１ 第１基板組（地板組）
２ 羽根組
４ 第２基板組（押さえ板組）
１１ 第１基板（地板）
１１ｘ 羽根支持面
１１ｚ 段差部
１２ 光路開口
１３ 第１の溝孔（ガイド溝）
１５ 弾性部材
１６ ガイド溝
２０ 羽根部材（２０ａ〜２０ｉ）
２１ 羽根基板
２１ｍ 溶着領域
２１ｘ 基端部
２１ｙ 先端部
２２ ガイドピン（第１の支軸）
２３ 作動ピン（第２の支軸）
２４ 補助基板
３１ 駆動リング
３２ フランジ
３３ 第２の溝孔
３４ 係合突起
３５ 受動歯
４１ 第２基板（押さえ板）
４２ 補強板
４６ 取付座 A Light quantity adjusting device M Drive motor L Support gap R of blade member Laser light 1 First substrate set (base plate set)
2 Blade group 4 Second board group (holding plate group)
11 First substrate (ground plate)
11x blade support surface 11z step 12 optical path opening 13 first slot (guide groove)
15 Elastic member 16 Guide groove 20 Blade member (20a to 20i)
21 Blade substrate 21m Welding region 21x Base end 21y Tip 22 Guide pin (first support shaft)
23 Actuating pin (second spindle)
24 Auxiliary board 31 Drive ring 32 Flange 33 Second slot 34 Engaging projection 35 Passive tooth 41 Second board (pressing plate)
42 Reinforcing plate 46 Mounting seat

Claims (5)

複数の羽根部材によって光路開口の通過光量を調整する光量調整装置であって、
中央部に光路開口を有するリング形状の基板と、
前記光路開口の周囲に配置され円周方向に鱗状に重なり合う複数の羽根部材と、
前記基板との間に前記複数の羽根部材を挟むように配置され各羽根部材を開閉動する駆動リングと、
前記駆動リングを前記光路開口を中心に回動する駆動手段と、
を備え、
前記羽根部材は、
前記光路開口を開閉する絞り形成部と、その絞り形成部の基端に前記基板と前記駆動リングに嵌合する一対の支軸を配設する基端部とを形成しレーザ光を透過しない羽根基板と、
前記基端部にレーザ溶着で張り合わされる前記支軸を備えレーザ光を透過する補助基板から成り、
前記補助基板は、前記羽根基板と対峙する表面側で、前記レーザを照射する溶着領域に、そのレーザで溶解する前記羽根基板の溶材を流出する溝部を形成して成ることを特徴とする光量調整装置。 A light amount adjusting device that adjusts the amount of light passing through the optical path opening by a plurality of blade members,
A ring-shaped substrate having an optical path opening in the center, and
A plurality of blade members that are arranged around the optical path opening and overlap in a scale shape in the circumferential direction; and
A drive ring that is disposed so as to sandwich the plurality of blade members between the substrate and moves each blade member; and
Drive means for rotating the drive ring about the optical path opening;
With
The blade member is
A blade that does not transmit laser light by forming a diaphragm forming portion that opens and closes the optical path opening, and a base end portion that disposes the substrate and a pair of support shafts that fit into the drive ring at the proximal end of the diaphragm forming portion. A substrate,
Comprising an auxiliary substrate having the support shaft bonded to the base end portion by laser welding and transmitting laser light;
The auxiliary substrate is formed on the surface facing the blade substrate by forming a groove for flowing out the melted material of the blade substrate that is melted by the laser in a welding region where the laser is irradiated. apparatus. 複数の羽根部材によって光路開口の通過光量を調整する光量調整装置であって、
中央部に光路開口を有するリング形状の基板と、
前記光路開口の周囲に配置され円周方向に鱗状に重なり合う複数の羽根部材と、
前記基板との間に前記複数の羽根部材を挟むように配置され各羽根部材を開閉動する駆動リングと、
前記基板と駆動リングとの間の前記複数の羽根部材と対峙する位置で、
前記基板と各羽根部材との間に配置され、各羽根部材を駆動リング側に押圧するか、若しくは前記駆動リングと羽根部材との間に配置され、各羽根部材を基板側に押圧する弾性力を有する弾性部材と、
前記駆動リングを前記光路開口を中心に回動する駆動手段と、
を備え、
前記羽根部材は、
前記光路開口を開閉する絞り形成部と、その絞り形成部の基端に前記基板と前記駆動リングに嵌合する一対の支軸を配設する基端部とを形成しレーザ光を透過しない羽根基板と、
前記基端部にレーザ溶着で張り合わされる前記支軸を備えレーザ光を透過する補助基板から成り、
前記補助基板は、前記羽根基板と対峙する表面側で、前記レーザを照射する溶着領域に、そのレーザで溶解（溶融）する前記羽根基板の溶材を流出する溝部を形成して成ることを特徴とする光量調整装置。 A light amount adjusting device that adjusts the amount of light passing through the optical path opening by a plurality of blade members,
A ring-shaped substrate having an optical path opening in the center, and
A plurality of blade members that are arranged around the optical path opening and overlap in a scale shape in the circumferential direction; and
A drive ring that is disposed so as to sandwich the plurality of blade members between the substrate and moves each blade member; and
At a position facing the plurality of blade members between the substrate and the drive ring,
An elastic force that is disposed between the substrate and each blade member and presses each blade member toward the drive ring, or is disposed between the drive ring and the blade member and presses each blade member toward the substrate. An elastic member having
Drive means for rotating the drive ring about the optical path opening;
With
The blade member is
A blade that does not transmit laser light by forming a diaphragm forming portion that opens and closes the optical path opening, and a base end portion that disposes the substrate and a pair of support shafts that fit into the drive ring at the proximal end of the diaphragm forming portion. A substrate,
Comprising an auxiliary substrate having the support shaft bonded to the base end portion by laser welding and transmitting laser light;
The auxiliary substrate is formed by forming, on the surface side facing the blade substrate, a groove portion for flowing out the melted material of the blade substrate that is melted (melted) by the laser in a welding region irradiated with the laser. Light quantity adjustment device to do. 前記羽根基板は、前記補助基板の一対の支軸の一つが貫通する位置決め用孔を形成し、
前記溶着領域は前記一対の支軸の間に設定されて成る請求項１及び２に記載の光量調整装置。 The blade substrate forms a positioning hole through which one of the pair of support shafts of the auxiliary substrate passes,
The light quantity adjusting device according to claim 1, wherein the welding region is set between the pair of support shafts. 前記溶着領域は、前記一対の支軸の間に配設された略円形領域で、
前記補助基板の溝部は、前記溶着領域内に形成された少なくとも一つ環状の溝で形成されて成る請求項１乃至３に記載の光量調整装置。 The welding region is a substantially circular region disposed between the pair of support shafts,
4. The light quantity adjusting device according to claim 1, wherein the groove portion of the auxiliary substrate is formed by at least one annular groove formed in the welding region. 被写体からの光を結像する結像レンズと、
この結像レンズからの光を受光する撮像手段と、
上記被写体から結像レンズに至る光路に配置された光量調整装置と、
を備え、
前記光量調整装置は、請求項１及び４のいずれか１項に記載の構成を有していることを特徴とする撮像装置。 An imaging lens for imaging light from the subject;
Imaging means for receiving light from the imaging lens;
A light amount adjusting device disposed in an optical path from the subject to the imaging lens;
With
5. The image pickup apparatus according to claim 1, wherein the light amount adjusting device has the configuration according to claim 1.
JP2011143796A 2011-06-29 2011-06-29 Light quantity adjustment device and imaging apparatus including the same Pending JP2013011713A (en)

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JP2019023403A (en) * 2017-07-24 2019-02-14 株式会社大林組 Shielding device and operating method of shielding device
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WO2015005088A1 (en) * 2013-07-09 2015-01-15 株式会社村田製作所 Measurement device, and method for manufacturing same
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JP7066376B2 (en) 2017-11-13 2022-05-13 キヤノン株式会社 Aperture device, lens device and image pickup device

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