JP2009036958A - Lens barrel coping with aligning adhesion, and lens barrel unit using the same and digital camera - Google Patents

Lens barrel coping with aligning adhesion, and lens barrel unit using the same and digital camera Download PDF

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JP2009036958A
JP2009036958A JP2007200570A JP2007200570A JP2009036958A JP 2009036958 A JP2009036958 A JP 2009036958A JP 2007200570 A JP2007200570 A JP 2007200570A JP 2007200570 A JP2007200570 A JP 2007200570A JP 2009036958 A JP2009036958 A JP 2009036958A
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lens barrel
adhesive
groove shape
optical component
plane
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Noriya Tanimoto
典哉 谷本
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a lens barrel where aligning adhesion of an optical component is performed, and where attitude change of the aligned optical component after curing an adhesive is restrained while securing required adhesion strength. <P>SOLUTION: The infiltration of the adhesive is accelerated by a groove shape 10 nearly in a radial direction provided on a plane 7 of a lens barrel 1. The adhesive is supplied and applied through a needle or the like, and spreads uniformly in the groove shape 10 between the optical component A2 and the plane 7. By equally arranging the groove shape 10 on the plane 7, an amount of the adhesive is made equal on an adhesion surface, an adhesion range can be controlled, and the adhesion becomes surer. The groove shape 10 reaches the outer periphery end (inner wall part 11 of the lens barrel 1) of the plane 7 on the outside of an outer diameter (edge surface 12) of the optical component A2, whereby the adhesive easily infiltrates in the groove shape 10 on the plane 7 of the lens barrel 1. The structure of the groove shape 10 does not reach the inner periphery end of the plane 7, whereby the adhesive is not leaked inside the lens barrel 1. Thus, a situation that optical performance is adversely influenced and outside appearance becomes poor because of soiling of the inner wall (in the effective diameter of a light beam) of the lens barrel 1 and the appearance defect is drastically reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、光学系の一部である複数枚から構成された光学部品に対して、光軸中心に位置合わせ調整をする調心後に接着固定する鏡筒、特に鏡胴ユニットとしてデジタルカメラやフイルムカメラあるいはビデオカメラ等に用いられる調心接着に対応した鏡筒に関するものである。   The present invention relates to a lens barrel that is bonded and fixed after alignment for alignment with an optical axis center for an optical component composed of a plurality of optical parts that are a part of an optical system, particularly a digital camera or film as a lens barrel unit. The present invention relates to a lens barrel corresponding to aligning adhesion used for a camera or a video camera.

近年のデジタルカメラ、さらにはプロジェクター，双眼鏡，望遠鏡，顕微鏡などに応用される鏡筒を含む光学系において、小型・薄型化、可変焦点距離光学系の高変倍化、非球面レンズの導入などにより、鏡筒の組み立て方法は、先に組み立てられた光学部品に対して、後から組み立てる光学部品の位置を精密に調整し固定（具体的には、接着による固定）することが多くなっている。   In recent digital cameras and optical systems including lens barrels applied to projectors, binoculars, telescopes, microscopes, etc., due to miniaturization and thinning, higher variable focal length optical systems, introduction of aspherical lenses, etc. As for the method of assembling the lens barrel, the position of an optical component to be assembled later is accurately adjusted and fixed (specifically, fixing by adhesion) with respect to the optical component previously assembled.

この光学部品の鏡筒への固定方法としては、
１．ネジを切った押え環やカシメによる機械的な締結
２．接着剤を利用した接着
３．鏡筒部材を溶解することによる溶着
などが従来技術として行われており、鏡筒の材質・構造や必要とされる固定後の位置精度、コストなどにより使い分けられている。 As a method of fixing this optical component to the lens barrel,
1. 1. Mechanical fastening with threaded presser ring or caulking. 2. Adhesion using an adhesive Welding by melting the lens barrel member has been performed as a conventional technique, and it is properly used depending on the material and structure of the lens barrel, required positional accuracy after fixing, cost, and the like.

前述した１．の機械的な締結については、従来技術の例を挙げるまでもなく、また、光学部品の位置を調整して固定することは困難である。   As described above. As for the mechanical fastening, it is needless to mention examples of the prior art, and it is difficult to adjust and fix the position of the optical component.

２．の接着については特許文献１、また３．の溶着については特許文献２などが従来技術として知られている。特許文献１には光学系の耐震性を高めるために光学部品と鏡筒内壁とを接着する技術が開示されており、特許文献２にはレーザーを用いて鏡筒を溶かし光学部品を接着する技術が開示されている。   2. As for the adhesion of the above, Patent Document 1 and 3. Patent Document 2 and the like are known as prior arts for welding. Patent Document 1 discloses a technique for bonding an optical component and a lens barrel inner wall in order to improve the earthquake resistance of an optical system, and Patent Document 2 discloses a technique for melting a lens barrel using a laser and bonding the optical component. Is disclosed.

また、特許文献４には、光軸調整工程と接着工程の作業効率を上げることを目的として、調整後の光軸ズレを高精度に防止しながら光軸調整後の接着工程を光軸調整装置から取り外した状態で行うことが開示されている。
特開２００２−２５８１２９号公報 特開２００４−３３３９４６号公報 特許第３２２１２３４号公報 特開２００５−３５２３１２号公報 特開２００５−９１７２８号公報 Further, in Patent Document 4, for the purpose of increasing the working efficiency of the optical axis adjustment step and the bonding step, the optical axis adjustment device describes the bonding step after the optical axis adjustment while preventing the optical axis deviation after the adjustment with high accuracy. It is disclosed that it is carried out in a state where it is detached from the box.
JP 2002-258129 A JP 2004-333946 A Japanese Patent No. 3212234 JP-A-2005-352312 JP 2005-91728 A

前記の特許文献１，２では光学部品を鏡筒に固定するという点において共通する。前者は組立固定後の鏡筒内の光学部品を補強接着するものであり、後者は大パワーのレーザーと不活性ガスを使用するなど大掛かりな設備を必要とし実用化に際しては制限が大きく、また金属製の鏡筒には適用が困難である。   Patent Documents 1 and 2 are common in that the optical component is fixed to the lens barrel. The former is used to reinforce and bond the optical components in the lens barrel after assembly and fixing. The latter requires large-scale equipment such as the use of a high-power laser and inert gas, and there are significant restrictions in practical use. It is difficult to apply to a manufactured lens barrel.

また、接着剤を利用した調心されたレンズの接着方法は、レンズ周囲のコバ面と鏡筒の相対する接着面にのみ接着剤を塗布することが一般的であり（例えば、特許文献３）、レンズの平面（ひらめん：略光軸に垂直な受け面）と鏡筒の相対する接着面には接着剤を塗布しないか、または成り行きに任せている。このレンズのコバ面と鏡筒の相対する接着面における接着剤の量のムラによって、接着剤の硬化（接着剤の収縮）により調整したレンズがシフト偏心（光軸に対して垂直方向に移動）してしまうという問題があった。   In addition, as for the method of bonding an aligned lens using an adhesive, it is common to apply the adhesive only to the edge surface around the lens and the adhesive surface opposite to the lens barrel (for example, Patent Document 3). In addition, no adhesive is applied to the surface of the lens (flat face: receiving surface substantially perpendicular to the optical axis) and the adhesive surface opposite to the lens barrel, or it is left to the end. Due to unevenness in the amount of adhesive on the opposite surface of the lens and the lens barrel, the lens adjusted by curing the adhesive (shrinking the adhesive) shifts the eccentricity (moves in the direction perpendicular to the optical axis). There was a problem of doing.

さらに、レンズの平面には量が均一になるように接着剤を塗布していないために、接着力量が不足したり接着剤硬化後に調整したレンズがティルト偏心（光軸が傾く方向に移動）してしまい、また光軸方向に移動し鏡筒の受け面から浮いてしまうという問題もあった。   In addition, since the adhesive is not applied to the plane of the lens so that the amount is uniform, the amount of adhesive force is insufficient, or the lens adjusted after curing the adhesive is tilted eccentrically (moves in the direction in which the optical axis tilts). In addition, there is also a problem that it moves in the direction of the optical axis and floats from the receiving surface of the lens barrel.

前述したように、従来行われている光学部品を鏡筒に調心接着する接着剤を利用した接着方法では、レンズと鏡筒の接着面の外周に接着剤を塗布して、レンズと鏡筒の接着面全体に接着剤を行き渡らせることが困難であり、レンズと鏡筒の接着面内における接着剤の量にムラが発生し、例えば接着剤の量が増えると接着剤の硬化後に調整した光学部品の姿勢変化，位置ズレ，浮き，偏心が生じる可能性があり、また逆に接着剤の量を減らすと必要な接着強度が得られない、という問題があった。   As described above, in a conventional bonding method using an adhesive that aligns and bonds an optical component to a lens barrel, the lens and the lens barrel are coated by applying an adhesive to the outer periphery of the bonding surface of the lens and the lens barrel. It is difficult to spread the adhesive over the entire adhesive surface of the lens, and the amount of adhesive in the adhesive surface between the lens and the lens barrel becomes uneven. For example, when the amount of adhesive increases, the adhesive is adjusted after the adhesive is cured. There is a possibility that the posture change, positional deviation, floating, and eccentricity of the optical component may occur, and conversely, if the amount of the adhesive is reduced, the necessary adhesive strength cannot be obtained.

本発明は、前記従来技術の問題を解決することに指向するものであり、光学部品（レンズ）の調心接着を行う鏡筒において、必要な接着強度を確保しつつ、接着剤硬化後の調整した光学部品の姿勢変化（シフト偏心、ティルト偏心、浮き等）を減少させ、鏡筒や光学部品の材質に因らず容易な構成かつ低コストで実現する調心接着に対応した鏡筒、これを用いる鏡胴ユニット及びデジタルカメラを提供することを目的とする。   The present invention is directed to solving the problems of the prior art, and in a lens barrel for aligning and bonding optical components (lenses), adjustment after curing the adhesive while ensuring the necessary adhesive strength This reduces the change in attitude of optical parts (shift eccentricity, tilt eccentricity, floating, etc.), and allows easy construction and low cost for a self-aligning lens barrel that does not depend on the material of the lens barrel or optical parts. It is an object of the present invention to provide a lens barrel unit and a digital camera using the camera.

前記の目的を達成するために、本発明に係る請求項１に記載した発明の調心接着に対応した鏡筒は、光学系の一部である複数枚から構成された光学部品を光軸中心に位置合わせ調整後、接着固定する鏡筒において、光学部品の外周と接する鏡筒の光軸に対して略垂直な円環状の平面に接着剤の浸入促進構造を設けたことにより、調整後の光学部品を容易にかつ確実に高精度な接着固定をすることができる。   In order to achieve the above-mentioned object, the lens barrel corresponding to the aligning adhesion of the invention described in claim 1 according to the present invention has an optical component centered on an optical component composed of a plurality of sheets which is a part of an optical system. In the lens barrel to be bonded and fixed after the alignment adjustment, an adhesive infiltration promoting structure is provided on an annular plane substantially perpendicular to the optical axis of the lens barrel in contact with the outer periphery of the optical component. Optical components can be easily and reliably bonded and fixed with high accuracy.

また、請求項２に記載した発明は、請求項１の調心接着に対応した鏡筒であって、接着剤の浸入促進構造は、平面に設けられた光軸から略放射方向への溝形状であることにより、平面との間に表面張力の効果で接着剤の浸入が促進され、また溝形状の構成により接着範囲を制御することができ、光学部品の接着固定がより確実にできる。   The invention described in claim 2 is the lens barrel corresponding to the aligning adhesion of claim 1, wherein the adhesive penetration promoting structure has a groove shape in a substantially radial direction from the optical axis provided on the plane. Thus, the penetration of the adhesive is promoted by the effect of the surface tension with the flat surface, and the bonding range can be controlled by the configuration of the groove shape, and the adhesive fixing of the optical component can be more reliably performed.

また、請求項３に記載した発明は、請求項１，２の調心接着に対応した鏡筒であって、接着剤の浸入促進構造は、平面に設けられた円弧の溝形状であることにより、平面との間に表面張力の効果で接着剤の浸入がより促進され、また溝形状の構成により接着範囲を制御することができ、光学部品の接着固定がより確実にできる。   Further, the invention described in claim 3 is a lens barrel corresponding to the aligning adhesion of claims 1 and 2, and the adhesive invasion promoting structure is an arc groove shape provided on a flat surface. The penetration of the adhesive is further promoted by the effect of surface tension with the flat surface, and the bonding range can be controlled by the groove-shaped configuration, so that the optical component can be more securely fixed.

また、請求項４に記載した発明は、請求項１〜３の調心接着に対応した鏡筒であって、接着剤の浸入促進構造は、平面に設けられた略円周方向の溝形状であることにより、平面との間に表面張力の効果で接着剤の浸入がより促進され、また溝形状への接着剤の最小滴下数により接着処理を制御でき、光学部品の接着固定がより確実にできる。   The invention described in claim 4 is a lens barrel corresponding to the aligning adhesion of claims 1 to 3, wherein the adhesive invasion promoting structure is formed by a substantially circumferential groove shape provided on a plane. As a result, the penetration of the adhesive is further promoted by the effect of the surface tension with the flat surface, and the adhesive treatment can be controlled by the minimum number of adhesive drops in the groove shape, and the optical component is more securely fixed. it can.

また、請求項５に記載した発明は、請求項２〜４の調心接着に対応した鏡筒であって、平面に設けられた溝形状は、複数本の溝形状のうちの少なくとも３本が設けられたことにより、接着剤の滴下量や浸入量のばらつきで光学部品の平面に対する浮きや傾きの発生を抑え、接着剤硬化時の収縮により光学部品の初期固定位置から偏心することを抑制することが可能となり、より精度の高い接着固定ができる。   The invention described in claim 5 is a lens barrel corresponding to the aligning adhesion of claims 2 to 4, and the groove shape provided on the plane is at least three of the plurality of groove shapes. Due to the provision of the adhesive, it is possible to suppress the floating and tilting of the optical component with respect to the flat surface due to variations in the amount of adhesive dripping and penetration, and to prevent the optical component from being eccentric from the initial fixing position due to shrinkage during curing of the adhesive. This makes it possible to perform adhesive fixing with higher accuracy.

また、請求項６に記載した発明は、請求項２〜５の調心接着に対応した鏡筒であって、平面に設けられた溝形状は、溝形状の端部が平面の外周端に達し、かつ平面の内周端には達していないことにより、光学部品の外周と鏡筒の内壁との間に滴下した接着剤が溝形状に確実に浸入でき、接着剤が光学部品の光線有効径内にはみ出して光束の妨げや外観不良となることを防ぐことができる。   The invention described in claim 6 is the lens barrel corresponding to the aligning adhesion of claims 2 to 5, wherein the groove shape provided on the plane is such that the end of the groove shape reaches the outer peripheral end of the plane. In addition, by not reaching the inner peripheral edge of the plane, the adhesive dripped between the outer periphery of the optical component and the inner wall of the lens barrel can surely enter the groove shape, and the adhesive is effective in the light beam diameter of the optical component. It can be prevented that it protrudes into the inside and obstructs the luminous flux and causes poor appearance.

また、請求項７に記載した発明は、請求項１〜６の調心接着に対応した鏡筒であって、光学部品は、ガラスまたは樹脂あるいはそれらの組合せからなる屈折力を有するレンズであることにより、光学部品を通過した光線照射ができるため紫外線硬化性の接着剤の使用が容易となり、より短時間、低コストで確実な光学部品の接着固定することができる。   The invention described in claim 7 is a lens barrel corresponding to the aligning adhesion of claims 1 to 6, wherein the optical component is a lens having refractive power made of glass, resin, or a combination thereof. Therefore, it is possible to irradiate the light beam that has passed through the optical component, so that it is easy to use an ultraviolet curable adhesive, and it is possible to securely bond and fix the optical component in a shorter time and at a lower cost.

また、請求項８に記載した発明の鏡胴ユニットは、請求項１〜７のいずれか１項に記載の調心接着に対応した鏡筒を用いたことにより、光学部品の調心接着により高い性能を持った光学系を有する鏡胴ユニットを得ることができる。   In addition, the lens barrel unit of the invention described in claim 8 is higher in aligning adhesion of optical components by using the lens barrel corresponding to aligning adhesion described in any one of claims 1 to 7. A lens barrel unit having an optical system with performance can be obtained.

また、請求項９に記載した発明のデジタルカメラは、請求項８の鏡胴ユニットを用いたことにより、光学部品の調心接着により高い性能を持った光学系を有する高い性能をもったデジタルカメラを容易に得ることができる。   According to a ninth aspect of the present invention, there is provided a digital camera having a high performance having an optical system having a high performance due to aligning adhesion of optical parts by using the lens barrel unit of the eighth aspect. Can be easily obtained.

本発明によれば、光学部品を調整後に接着固定する鏡筒において、接着前後の偏心の発生を抑えかつ接着強度を確保することが可能で、鏡筒や光学部品の材質に因らず容易な構成かつ低コストで実現することができるという効果を奏する。   According to the present invention, it is possible to suppress the occurrence of eccentricity before and after bonding and secure the bonding strength in a lens barrel that is bonded and fixed after adjusting an optical component, which is easy regardless of the material of the lens barrel or the optical component. There exists an effect that it can implement | achieve at a structure and low cost.

以下、図面を参照して本発明における実施の形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１は本発明の実施形態１における調心に対応した鏡筒を示す（ａ）は上面図、（ｂ）は断面図である。図１（ａ），（ｂ）において、１は鏡筒、２は光学部品Ａ、３は光学部品Ｂ、４は押え環、５は押し棒、６は接着剤、７は平面、８は調心押え、９はスリットである。   1A and 1B show a lens barrel corresponding to alignment according to Embodiment 1 of the present invention, in which FIG. 1A and 1B, 1 is a lens barrel, 2 is an optical component A, 3 is an optical component B, 4 is a presser ring, 5 is a push rod, 6 is an adhesive, 7 is a plane, and 8 is an adjustment. Tail presser 9 is a slit.

鏡筒１に光学部品Ａ２，光学部品Ｂ３を調心接着する場合、まず、図１（ｂ）に示すように、鏡筒１に対して光学部品Ｂ３が押え環４により組付け固定される。図１（ｂ）では光学部品Ｂ３は正の屈折力を持つ両凸レンズに描かれているが、正メニスカスレンズや負の屈折力を持つレンズでも本発明の構成に影響はない。また、押え環４ではなくカシメや接着により固定されていても同様に本発明の構成には影響しない。   When aligning and bonding the optical component A2 and the optical component B3 to the lens barrel 1, first, the optical component B3 is assembled and fixed to the lens barrel 1 by the presser ring 4, as shown in FIG. In FIG. 1B, the optical component B3 is depicted as a biconvex lens having a positive refractive power, but a positive meniscus lens or a lens having a negative refractive power does not affect the configuration of the present invention. Further, the structure of the present invention is not affected even if it is fixed by caulking or bonding instead of the presser ring 4.

さらに、光軸を合わせる図１（ａ），（ｂ）に示す光学部品Ａ２は、鏡筒１の光軸に対して略垂直な平面７で支持され、調心押え８によりその位置を保つように、図示していないバネ，空気圧，磁力などにより適切な圧にて押えられている。なお、調心押え８の形状は円環状に限らず、光学部品Ａ２に対して光軸方向にのみ均等に押圧可能な形状であればよい。   Further, the optical component A2 shown in FIGS. 1A and 1B for aligning the optical axis is supported by a plane 7 that is substantially perpendicular to the optical axis of the lens barrel 1 and is maintained by the aligning presser 8. Further, it is held at an appropriate pressure by a spring, air pressure, magnetic force or the like not shown. The shape of the aligning presser foot 8 is not limited to an annular shape, and may be any shape that can be uniformly pressed only in the optical axis direction against the optical component A2.

また、光学部品Ａ２は鏡筒１に設けられたスリット９を通過して設置されている押し棒５により、その平面７上の位置を微調整可能な構造になっている。図１（ａ）では押し棒５の数は向かい合った２組の４本であるが、約１２０°間隔の３本であっても良い。   Further, the optical component A2 has a structure in which the position on the plane 7 can be finely adjusted by a push rod 5 installed through a slit 9 provided in the lens barrel 1. In FIG. 1A, the number of push bars 5 is four in two sets facing each other, but may be three at intervals of about 120 °.

押し棒５にて光学部品Ａ２を適切な位置に微調整後、接着剤６にて光学部品Ａ２と鏡筒１を固定する。具体的な鏡筒１と光学部品Ｂ３との光軸を一致させる光学部品Ａ２の位置調整方法は特許文献５等に開示されているが、本発明では調整方法の如何によらず適用可能なため説明を省略する。   After finely adjusting the optical component A2 to an appropriate position with the push rod 5, the optical component A2 and the lens barrel 1 are fixed with the adhesive 6. A specific method for adjusting the position of the optical component A2 for matching the optical axes of the lens barrel 1 and the optical component B3 is disclosed in Patent Document 5, etc., but is applicable regardless of the adjustment method in the present invention. Description is omitted.

なお、光学部品Ａ，Ｂは、ガラスまたは樹脂あるいはそれらの組合せからなる屈折力を有するレンズであればよい。   The optical components A and B may be lenses having refractive power made of glass, resin, or a combination thereof.

図２は本実施形態１の実施例１における調心に対応した鏡筒の（ａ）は上面図、（ｂ）は図２の（ａ）のＡ−Ａ’断面図である。図２（ａ）に示すように、鏡筒１の平面７に設けられた略放射方向への溝形状１０により接着剤の浸入が促進される。図１（ａ）に示すように、接着剤６は、例えばシリンジの先のニードルなどを用いて供給・塗布することにより、光学部品Ａ２と鏡筒１の平面７との間の溝形状１０内に均一に行き渡る。溝形状１０を平面７上に均等に配置したこの構造により接着面内で接着剤６の量の分布を均等にでき、接着範囲を制御することが可能となり、光学部品Ａ２の接着固定がより確実になる。   2A is a top view of a lens barrel corresponding to alignment in Example 1 of Embodiment 1, and FIG. 2B is a cross-sectional view taken along line A-A ′ of FIG. As shown in FIG. 2A, the penetration of the adhesive is promoted by the groove shape 10 in the substantially radial direction provided on the plane 7 of the lens barrel 1. As shown in FIG. 1A, the adhesive 6 is supplied and applied using, for example, a needle at the end of a syringe, so that the inside of the groove shape 10 between the optical component A2 and the plane 7 of the lens barrel 1 is obtained. Spread evenly. With this structure in which the groove shape 10 is evenly arranged on the plane 7, the distribution of the amount of the adhesive 6 can be made uniform within the bonding surface, the bonding range can be controlled, and the optical component A2 can be more securely fixed. become.

また、鏡筒１の平面７に設けられた略放射方向への溝形状１０の構造は、４本となっているが、鏡筒１の平面７の平面度が犠牲にならない範囲で少なくとも３本以上であればよい。   Further, the structure of the groove shape 10 in the substantially radial direction provided on the plane 7 of the lens barrel 1 is four, but at least three are within a range where the flatness of the plane 7 of the lens barrel 1 is not sacrificed. That is all you need.

図２（ｂ）に示すように、溝形状１０の構造は、平面７の外周端（鏡筒１の内壁部１１）に、少なくとも調整する光学素子Ａ２の外径（コバ面１２）より外側に、達している。これにより接着剤が鏡筒１の平面７の溝形状１０へ浸入しやすくなる。また、溝形状１０の構造が平面７の内周端に達していないことにより、鏡筒１の内部に接着剤が漏れ出ることがなく、接着剤が鏡筒１の内壁（光線有効径内）や光学素子Ａ２の光学面を汚染し光学性能に悪影響を与えたり、外観不良となる可能性を大幅に減少させることができる。   As shown in FIG. 2 (b), the structure of the groove shape 10 is formed on the outer peripheral end (inner wall portion 11 of the lens barrel 1) of the plane 7 at least outside the outer diameter (edge surface 12) of the optical element A2 to be adjusted. Have reached. As a result, the adhesive easily enters the groove shape 10 of the plane 7 of the lens barrel 1. Further, since the structure of the groove shape 10 does not reach the inner peripheral end of the flat surface 7, the adhesive does not leak into the lens barrel 1, and the adhesive is inside the lens barrel 1 (within the effective beam diameter). In addition, the possibility that the optical surface of the optical element A2 is contaminated to adversely affect the optical performance, or the appearance is deteriorated can be greatly reduced.

さらに、鏡筒１を、金型を用いた射出成型で製造する場合において、溝形状１０の構造が接着平面の外周端に達していることにより、そうでない場合に比べて金型の加工数を減らすことができるためコスト面でも有利となる。   Furthermore, when manufacturing the lens barrel 1 by injection molding using a mold, the structure of the groove shape 10 has reached the outer peripheral edge of the bonding plane, so that the number of molds to be processed can be reduced as compared to the case where it is not. Since it can be reduced, it is advantageous in terms of cost.

前述した構成によれば、光学部品の調心接着を行う鏡筒において、光学部品Ａ２と鏡筒平面７の接着面内に行き渡った接着剤量のばらつきを減少させ、接着剤の硬化で収縮する際の不均衡に起因する光学部品Ａ２の姿勢変化を最小限に抑え、また、光学部品Ａ２と鏡筒１の接着は、内壁部１１とコバ面１２も含めて接着されるため、容易に接着強度を確保でき、さらに、余分な接着剤は光線有効径内に浸入し難いため、光学面への接着剤による汚染を防ぐことが可能となる。   According to the configuration described above, in the lens barrel for aligning and bonding the optical components, the variation in the amount of the adhesive spread in the bonding surface between the optical component A2 and the lens barrel plane 7 is reduced, and the adhesive shrinks due to the curing of the adhesive. The change in posture of the optical component A2 due to the imbalance at the time is minimized, and the optical component A2 and the lens barrel 1 are bonded together including the inner wall portion 11 and the edge surface 12. In addition, the strength can be ensured, and the excess adhesive hardly penetrates into the effective diameter of the light beam, so that it is possible to prevent the optical surface from being contaminated by the adhesive.

また、図３は本実施形態１の実施例２における略放射方向への溝形状の構造を増やして、より接着強度を増やした例を示す図である。従来では光学部品と鏡筒の接着強度を得るため、接着剤量や接着位置を変えて実際に接着することで実験的に接着条件を定めていた。しかし本実施例２によれば、光学部品と鏡筒の単位接着面当たりの溝形状を増減することで接着強度を増減することが可能となり、溝形状の本数加減によって目標接着強度を実験することなく定めることができる。   Moreover, FIG. 3 is a figure which shows the example which increased the groove-shaped structure in the substantially radial direction in Example 2 of this Embodiment 1, and increased bond strength more. In the past, in order to obtain the bonding strength between the optical component and the lens barrel, the bonding conditions were experimentally determined by actually bonding by changing the amount of the adhesive and the bonding position. However, according to the second embodiment, it is possible to increase / decrease the adhesive strength by increasing / decreasing the groove shape per unit bonding surface of the optical component and the lens barrel, and experiment with the target adhesive strength by adjusting the number of groove shapes. It can be decided without.

図４，図５は本実施形態１の実施例３，４であり、実施例２の溝形状における構造の変形例であり、少ない溝形状の本数で光学部品との接着範囲を拡大することを目的とした例である。   FIGS. 4 and 5 are examples 3 and 4 of the first embodiment, which are modifications of the structure of the groove shape of the second embodiment, in which the bonding range with the optical component is expanded with a small number of groove shapes. This is an intended example.

前記実施例２のように、溝形状の本数を増やした場合、接着剤を各溝形状に浸入するようにニードルなどを用いて供給する必要があるため、作業時間が増加することになる。このため、本実施例３，４のように、溝形状の１本当たりの長さ・面積を増やすことによって、光学部品と鏡筒平面間の単位接着面当たりの溝形状の面積を増やしながら接着剤供給の作業時間を短縮することが可能となる。   When the number of groove shapes is increased as in the second embodiment, it is necessary to supply the adhesive using a needle or the like so as to enter each groove shape, which increases the working time. For this reason, as in Examples 3 and 4, by increasing the length and area per groove shape, bonding is performed while increasing the groove shape area per unit bonding surface between the optical component and the lens barrel plane. It becomes possible to shorten the working time of the agent supply.

また、図５の溝形状のように、円弧の溝形状の両端が平面の外周端に達していることにより、一端から供給の接着剤が他端から出てくることを容易に確認できる。これにより、溝形状の全体に接着剤が充填されたことを確実に把握でき、接着剤の供給量に過不足の発生を防ぐことができる。さらに、溝形状の両端が大気に開放されているため溝形状の内部に接着材が浸入しやすいという効果もあり、より接着作業時間を短縮でき、また比較的粘度の高い接着材も使用することが可能となるなど、接着剤の選択範囲を広げることもできる。   Further, as shown in the groove shape of FIG. 5, since both ends of the circular arc groove shape reach the outer peripheral end of the plane, it can be easily confirmed that the supplied adhesive comes out from the other end. Thereby, it can be surely grasped that the adhesive is filled in the entire groove shape, and it is possible to prevent the supply amount of the adhesive from being excessive or insufficient. In addition, since both ends of the groove shape are open to the atmosphere, there is an effect that the adhesive material can easily enter the groove shape, the bonding work time can be shortened, and a relatively high viscosity adhesive material should also be used. This makes it possible to expand the range of adhesive selection.

また、図６および図７は本実施形態１の実施例５，６を示す図であり、前述した各実施例の構成に略円周方向の溝形状の構造を加えることにより、１箇所の溝形状に供給された接着剤が他の溝形状にまで浸入するため、接着剤の供給作業時間を短縮し、光学部品と鏡筒との間で単位接着面当たりの溝形状の占める面積をさらに増やすことができ、接着強度の設定範囲を広く取ることができ、より多用な光学部品、鏡筒に対応が可能となる。   FIGS. 6 and 7 are diagrams showing Examples 5 and 6 of the first embodiment. By adding a substantially circumferential groove-shaped structure to the configuration of each Example described above, one groove is shown. Since the adhesive supplied to the shape penetrates into other groove shapes, the adhesive supply work time is shortened, and the area occupied by the groove shape per unit adhesive surface is further increased between the optical component and the lens barrel. It is possible to widen the setting range of the adhesive strength, and it is possible to deal with more versatile optical parts and lens barrels.

図８は本発明の実施形態２における前述した実施形態１の調心に対応した鏡筒を用いた鏡胴ユニットを示す斜視図である。この調心接着に対応した鏡筒を用いた構成により、光学部品の高い性能を有する光学系の鏡胴ユニットを得ることができる。   FIG. 8 is a perspective view showing a lens barrel unit using a lens barrel corresponding to the alignment of the first embodiment described above in the second embodiment of the present invention. An optical system barrel unit having high performance of optical components can be obtained by the configuration using the lens barrel corresponding to the alignment adhesion.

また、図９は本発明の実施形態３における前述した実施形態２の鏡胴ユニットを用いたデジタルカメラの例を示す（ａ）は上面図、（ｂ）は正面図、（ｃ）は背面図である。   FIG. 9 shows an example of a digital camera using the lens barrel unit of Embodiment 2 described above in Embodiment 3 of the present invention, (a) is a top view, (b) is a front view, and (c) is a rear view. It is.

図９（ａ）〜（ｃ）に示すように、デジタルカメラ本体の上面には、レリーズスイッチ（レリーズシャッタ）ＳＷ１、モードダイヤルスイッチＳＷ２、およびサブＬＣＤ（液晶ディスプレイ）１５が配設されている。   As shown in FIGS. 9A to 9C, a release switch (release shutter) SW1, a mode dial switch SW2, and a sub LCD (liquid crystal display) 15 are disposed on the top surface of the digital camera body.

また、デジタルカメラ本体の正面には、撮影レンズを含む鏡胴ユニット２１、光学ファインダユニット１８、ストロボ発光部１７、測距ユニット１９、リモートコントロール受光部２０が設けられている。   In addition, a lens barrel unit 21 including an imaging lens, an optical finder unit 18, a strobe light emitting unit 17, a distance measuring unit 19, and a remote control light receiving unit 20 are provided on the front surface of the digital camera body.

デジタルカメラの背面には、電源スイッチＳＷ５、ＬＣＤモニタ２２、広角方向、望遠方向のズームスイッチＳＷ３、各種設定の操作選択等を行う十字キースイッチＳＷ４が設けられている。カメラ本体の側面にはメモリカード／電池装填室の蓋１６が設けられている。   On the back of the digital camera, a power switch SW5, an LCD monitor 22, a zoom switch SW3 in the wide angle direction and a telephoto direction, and a cross key switch SW4 for selecting various settings are provided. A memory card / battery loading chamber lid 16 is provided on the side of the camera body.

デジタルカメラの各部材の機能および作用は公知であるので、その説明は省略する。このデジタルカメラの鏡胴ユニット２１に前述した実施形態２の鏡胴ユニットを用いて構成することにより、高い性能を持つデジタルカメラを容易に得ることが可能となる。   Since the function and operation of each member of the digital camera are known, the description thereof is omitted. By configuring the lens barrel unit 21 of the digital camera using the lens barrel unit of the second embodiment described above, it is possible to easily obtain a digital camera having high performance.

以上によれば、光学部品を調整後に接着固定する鏡筒において、接着前後における偏心の発生を抑え、かつ接着強度を確保すること、さらに鏡筒や光学部品の材質によらず容易な構成かつ低コストで調心接着に対応した鏡筒、これを用いる鏡胴ユニット及びデジタルカメラを実現することが可能となる。   According to the above, in the lens barrel that is bonded and fixed after adjusting the optical component, it is possible to suppress the occurrence of eccentricity before and after bonding and to secure the bonding strength, and to easily and low-cost regardless of the material of the lens barrel and the optical component. It is possible to realize a lens barrel capable of aligning bonding at a cost, a lens barrel unit using the lens barrel, and a digital camera.

本発明に係る調心接着に対応した鏡筒、これを用いる鏡胴ユニット及びデジタルカメラは、光学部品を調整後に接着固定する鏡筒において、接着前後の偏心の発生を抑えかつ接着強度を確保することが可能で、鏡筒や光学部品の材質に因らず容易な構成かつ低コストで実現することができ、鏡胴ユニットとしてデジタルカメラ等に用いられる鏡筒として有用である。   The lens barrel corresponding to the aligning adhesion according to the present invention, the lens barrel unit and the digital camera using the lens barrel suppress the occurrence of eccentricity before and after bonding and secure the bonding strength in the lens barrel that bonds and fixes the optical component after adjustment. Therefore, it can be realized with a simple configuration and at low cost regardless of the material of the lens barrel and optical parts, and is useful as a lens barrel used in a digital camera or the like as a lens barrel unit.

本発明の実施形態１における調心に対応した鏡筒を示す（ａ）は上面図、（ｂ）は断面図(A) which shows the lens barrel corresponding to alignment in Embodiment 1 of this invention is a top view, (b) is sectional drawing. 本実施形態１の実施例１における調心に対応した鏡筒の（ａ）は上面図、（ｂ）は図２の（ａ）のＡ−Ａ’断面図(A) of the lens barrel corresponding to alignment in Example 1 of Embodiment 1 is a top view, and (b) is a cross-sectional view taken along line A-A 'of (a) of FIG. 本実施形態１の実施例２で略放射方向への溝形状を増やした例を示す図The figure which shows the example which increased the groove shape to the substantially radial direction in Example 2 of this Embodiment 1. 本実施形態１の実施例３で実施例２の溝形状の変形例を示す図The figure which shows the modification of the groove shape of Example 2 in Example 3 of this Embodiment 1. 本実施形態１の実施例４で実施例２の溝形状の変形例を示す図The figure which shows the modification of the groove shape of Example 2 in Example 4 of this Embodiment 1. 本実施形態１の実施例５で実施例２の溝形状の変形例を示す図The figure which shows the modification of the groove shape of Example 2 in Example 5 of this Embodiment 1. 本実施形態１の実施例６で実施例２の溝形状の変形例を示す図The figure which shows the modification of the groove shape of Example 2 in Example 6 of this Embodiment 1. 本発明の実施形態２における実施形態１の鏡筒を用いた鏡胴ユニットを示す斜視図The perspective view which shows the lens barrel unit using the lens-barrel of Embodiment 1 in Embodiment 2 of this invention. 本発明の実施形態３における実施形態２の鏡胴ユニットを用いたデジタルカメラを示す（ａ）は上面図、（ｂ）は正面図、（ｃ）は背面図(A) is a top view, (b) is a front view, and (c) is a rear view showing a digital camera using the lens barrel unit of Embodiment 2 in Embodiment 3 of the present invention.

符号の説明Explanation of symbols

１ 鏡筒
２ 光学部品Ａ
３ 光学部品Ｂ
４ 押え環
５ 押し棒
６ 接着剤
７ 平面
８ 調心押え
９ スリット
１０ 溝形状
１１ 内壁部
１２ コバ面
１５ サブＬＣＤ
１６ メモリカード／電池装填室の蓋
１７ ストロボ発光部
１８ 光学ファインダユニット
１９ 測距ユニット
２０ リモートコントロール受光部
２１ 鏡胴ユニット
２２ ＬＣＤモニタ 1 Lens barrel 2 Optical component A
3 Optical parts B
4 Presser ring 5 Push bar 6 Adhesive 7 Flat surface 8 Centering presser 9 Slit 10 Groove shape 11 Inner wall 12 Edge 15 Sub LCD
16 Memory card / battery compartment lid 17 Strobe light emitting unit 18 Optical finder unit 19 Ranging unit 20 Remote control light receiving unit 21 Lens barrel unit 22 LCD monitor

Claims (9)

光学系の一部である複数枚から構成された光学部品を光軸中心に位置合わせ調整後、接着固定する鏡筒において、
前記光学部品の外周と接する前記鏡筒の光軸に対して略垂直な円環状の平面に接着剤の浸入促進構造を設けたことを特徴とする調心接着に対応した鏡筒。 After aligning and adjusting the optical component composed of a plurality of optical systems that are part of the optical system around the center of the optical axis,
A lens barrel corresponding to aligning adhesion, characterized in that an adhesive infiltration promoting structure is provided on an annular plane substantially perpendicular to the optical axis of the lens barrel in contact with the outer periphery of the optical component. 前記接着剤の浸入促進構造は、前記平面に設けられた光軸から略放射方向への溝形状であることを特徴とする請求項１記載の調心接着に対応した鏡筒。   2. The lens barrel corresponding to aligning adhesion according to claim 1, wherein the adhesive invasion promoting structure has a groove shape in a substantially radial direction from an optical axis provided on the plane. 前記接着剤の浸入促進構造は、前記平面に設けられた円弧の溝形状であることを特徴とする請求項１または２記載の調心接着に対応した鏡筒。   The lens barrel corresponding to aligning adhesion according to claim 1 or 2, wherein the adhesive invasion promoting structure is an arcuate groove shape provided on the flat surface. 前記接着剤の浸入促進構造は、前記平面に設けられた略円周方向の溝形状であることを特徴とする請求項１〜３のいずれか１項に記載の調心接着に対応した鏡筒。   The lens barrel corresponding to aligning adhesion according to any one of claims 1 to 3, wherein the adhesive invasion promoting structure has a substantially circumferential groove shape provided on the plane. . 前記平面に設けられた溝形状は、複数本の溝形状のうちの少なくとも３本が設けられたことを特徴とする請求項２〜４のいずれか１項に記載の調心接着に対応した鏡筒。   5. The mirror corresponding to aligning adhesion according to claim 2, wherein at least three of the plurality of groove shapes are provided on the flat surface. 6. Tube. 前記平面に設けられた溝形状は、溝形状の端部が前記平面の外周端に達し、かつ前記平面の内周端には達していないことを特徴とする請求項２〜５のいずれか１項に記載の調心接着に対応した鏡筒。   The groove shape provided on the flat surface has an end portion of the groove shape that reaches the outer peripheral end of the flat surface and does not reach the inner peripheral end of the flat surface. A lens barrel corresponding to the aligning adhesion described in the item. 前記光学部品は、ガラスまたは樹脂あるいはそれらの組合せからなる屈折力を有するレンズであることを特徴とする請求項１〜６のいずれか１項に記載の調心接着に対応した鏡筒。   The lens barrel corresponding to aligning adhesion according to any one of claims 1 to 6, wherein the optical component is a lens having refractive power made of glass, resin, or a combination thereof. 請求項１〜７のいずれか１項に記載の調心接着に対応した鏡筒を用いたことを特徴とする鏡胴ユニット。   A lens barrel unit using the lens barrel corresponding to the aligning adhesion according to any one of claims 1 to 7. 請求項８の鏡胴ユニットを用いたことを特徴とするデジタルカメラ。   A digital camera using the lens barrel unit according to claim 8.
JP2007200570A 2007-08-01 2007-08-01 Lens barrel coping with aligning adhesion, and lens barrel unit using the same and digital camera Pending JP2009036958A (en)

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JP2017068064A (en) * 2015-09-30 2017-04-06 日本電産コパル株式会社 Lens barrel, optical device, electronic device, and method for manufacturing lens barrel
TWI725928B (en) * 2020-11-13 2021-04-21 大立光電股份有限公司 Imaging lens system, image capturing unit and electronic device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017058442A (en) * 2015-09-15 2017-03-23 キヤノン株式会社 Light source device, scanning optical device, and image forming apparatus
JP2017068064A (en) * 2015-09-30 2017-04-06 日本電産コパル株式会社 Lens barrel, optical device, electronic device, and method for manufacturing lens barrel
TWI725928B (en) * 2020-11-13 2021-04-21 大立光電股份有限公司 Imaging lens system, image capturing unit and electronic device

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