WO2010116861A1 - Lens with lens barrel - Google Patents

Lens with lens barrel Download PDF

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Publication number
WO2010116861A1
WO2010116861A1 PCT/JP2010/054336 JP2010054336W WO2010116861A1 WO 2010116861 A1 WO2010116861 A1 WO 2010116861A1 JP 2010054336 W JP2010054336 W JP 2010054336W WO 2010116861 A1 WO2010116861 A1 WO 2010116861A1
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Prior art keywords
lens
lens barrel
outer peripheral
electrode
main body
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PCT/JP2010/054336
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French (fr)
Japanese (ja)
Inventor
茂 畠山
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アルプス電気株式会社
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Publication of WO2010116861A1 publication Critical patent/WO2010116861A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4206—Optical features
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/022—Mountings; Housings
    • H01S5/0225—Out-coupling of light
    • H01S5/02253—Out-coupling of light using lenses

Definitions

  • the present invention relates to a lens with a lens barrel formed by holding a lens in a cylindrical lens barrel, and more particularly to a lens with a lens barrel having a flange at its lower end and welded to a stem or the like.
  • the lens with lens barrel includes a cylindrical lens barrel main body holding the lens on the inner peripheral surface, and a collar portion extended from the lower end of the lens barrel main body to the outer peripheral side.
  • the portions are formed to form a substantially right angle.
  • a corner formed by the lens barrel main body and the flange portion is formed to have a chamfered shape such as an R shape.
  • FIG. 5A an enlarged cross-sectional view of a portion for welding the lens with a lens barrel to the stem is shown in FIG.
  • the vicinity of the flange 52 of the lens with a lens barrel is enlarged.
  • a projection-like weld joint 53 is formed on the lower surface of the flange 52, and the weld joint 53 is placed on the top of the stem 55.
  • a plurality of electrodes 59 along the outer peripheral surface 51 a of the barrel main body 51 are brought into contact with the upper surface 52 a of the collar 52.
  • the distal end of the weld joint 53 is welded to the stem 55 by passing a current from the electrode 59 to the stem 55.
  • the side surfaces 59 b of the plurality of electrodes 59 are fixed along the outer peripheral surface 51 a of the barrel main body 51 by a method such as chucking, and the lower surface 59 a abuts on the upper surface 52 a of the flange 52.
  • the corner formed by the lens barrel main body 51 and the collar 52 often has an R shape from the viewpoint of processability and the like, so the corners on the inner peripheral side of the plurality of electrodes 59 corresponding to this.
  • the portion is also formed to have a chamfered shape.
  • the lower surfaces 59a of the plurality of electrodes 59 are in close contact with the upper surface 52a of the flange portion 52 of the lens barrel 50, and welding can be reliably performed.
  • the electrode 59 is periodically polished on the lower surface 59a to maintain performance. If the lower surface 59a of the electrode 59 is polished many times, the chamfered shape of the corner is gradually lost, and as shown in FIG. 5B, the lower surface 59a of the electrode 59 is changed by the R shape of the corner of the lens barrel 50. It will be impossible to abut the upper surface 52a of the flange 52 sufficiently. If the lower surface 59a of the electrode 59 can not abut sufficiently on the upper surface 52a of the flange 52 as described above, welding is adversely affected and the life of the electrode is shortened due to an improper welding state.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a lens with a lens barrel in which an electrode used for welding can abut against the outer peripheral surface of the lens barrel with certainty.
  • the lens with a lens barrel according to the present invention is a lens with a lens barrel formed by holding the lens in a cylindrical lens barrel
  • the lens barrel includes a lens barrel main body holding the lens on an inner peripheral surface, and a collar portion having a lower end surface of the lens barrel main portion extended to the outer peripheral side, and the lower surface of the collar portion Welded joints are formed
  • the outer peripheral surface lower end portion of the lens barrel main body portion is characterized in that a concave relief portion is formed so as to cover a corner portion formed with the upper surface of the collar portion.
  • the lens with a lens barrel according to the present invention is characterized in that the relief portion is formed so that the surface on the side of the ridge portion is flush with the upper surface of the ridge portion.
  • the lens with a lens barrel according to the present invention is characterized in that the relief portion is formed over the entire circumference of the outer peripheral surface of the lens barrel main body.
  • a concave relief portion is formed at the lower end portion of the outer peripheral surface of the lens barrel main body portion so as to cover the corner portion formed with the upper surface of the collar portion.
  • the relief portion is formed so that the surface on the side of the ridge is flush with the ridge, so that the clearance between the relief and the upper surface of the ridge is obtained. Since there is no difference in level, the electrode can be more reliably in contact with the buttocks.
  • the relief portion is formed over the entire circumference of the outer peripheral surface of the lens barrel main body, so that the electrode can be secured against the upper surface of the collar portion over the entire circumference. It can be made to abut.
  • FIG. 7 is an enlarged cross-sectional view of the vicinity of the lower end of the barrel main body in a state in which an electrode is disposed. It is an expanded sectional view of a portion which welds a conventional lens with a lens barrel to a stem.
  • FIG. 1 shows a cross-sectional view of an attached state of the lens with a lens barrel in the present embodiment.
  • the lens with barrel 1 is mounted on a metal stem 4 provided with a semiconductor laser 5 on the top surface.
  • the lens with lens barrel 1 seals a region where the semiconductor laser 5 is provided, and has a lens 3 for transmitting light from the semiconductor laser 5 and for forming parallel light or convergent light.
  • the lens with lens barrel 1 is composed of a cylindrical lens barrel 2 made of metal and a lens 3 housed inside.
  • the lens barrel 2 includes a barrel main body 10 formed in a cylindrical shape, and a collar portion 11 formed to extend from the lower end of the barrel main body 10 to the outer peripheral side.
  • the lens 3 is held on the inner circumferential surface 10 b of the barrel body 10.
  • weld joint 13 On the lower surface of the flange portion 11, a projecting weld joint 13 is formed which is mounted on the stem 4 and joined by welding. Weld joint 13 is formed over the entire circumference of the lower surface of flange 11.
  • FIG. 2 shows an enlarged cross-sectional view of the vicinity of the lower end of the barrel main body 10 of the lens with barrel 1.
  • Weld joint 13 formed on the lower surface of flange 11 is closer to the outer periphery than inner peripheral surface 10b of lens barrel main body 10 and is closer to the inner periphery than outer peripheral surface 10a of lens barrel main body 10 Is formed.
  • the weld joint 13 is formed to be tapered from the root side of the protrusion to the tip side.
  • the surface 13a of the weld joint 13 facing the outer peripheral side is formed to be inclined with respect to the lower surface of the collar 11, while the surface 13b facing the inner peripheral is substantially perpendicular to the lower surface of the collar 11 It is formed to be in the shape of a circle.
  • a notch 15 is formed at the lower end corner of the inner peripheral surface of the collar 11.
  • the notch 15 is formed so that the inner peripheral side surface is flush with the surface 13 b facing the inner peripheral side of the weld joint 13.
  • the weld joint portion 13 is formed in an asymmetrical shape in the inner and outer peripheral directions and the notch portion 15 is formed, whereby pressing by the electrode can be stably performed at the time of welding described later.
  • a concave relief portion 14 is formed over the entire circumference.
  • the relief portion 14 is formed on a corner portion formed by the outer peripheral surface 10 a of the lens barrel main body portion 10 and the upper surface 11 a of the ridge portion 11, and the surface on the ridge portion side flush with the upper surface 11 a of the ridge portion 11 14a is included. From the deepest part of the surface 14a on the buttocks side to the outer peripheral surface 10a of the barrel main body 10, it is formed in an inclined surface shape, and is formed to have a substantially V-shaped cross section.
  • the relief portion 14 functions at the time of welding described below.
  • FIG. 3 shows a cross-sectional view at the time of welding to the stem 4 of the lens with barrel 1.
  • the first electrode 20 is provided to cover the lens with lens barrel 1 from above, and the stem 4 is supported from below
  • the second electrode 21 is provided to do so.
  • the first electrode 20 has an abutting surface 20a on the lower surface side which contacts and presses the upper surface 11a of the flange portion 11 constituting the lens barrel 2, and the inner peripheral side of the abutting surface 20a is the lens barrel main body 10
  • the side surface 20 b is formed so as to substantially conform to the outer peripheral shape, and the side surface 20 b approaches the outer peripheral surface 10 a of the barrel body 10.
  • the second electrode 21 has an abutment surface 21 a that faces the abutment surface 20 a of the first electrode 20 and presses the lower surface side of the stem 4. Then, the flange portion 11 of the barrel 2 and the stem 4 are pinched by the first electrode 20 and the second electrode 21. As a result, the weld joint 13 of the flange 11 is in a state of being in pressure contact with the stem 4. In a state where the lens barrel 2 and the stem 4 are pressed by the first electrode 20 and the second electrode 21, the tip of the weld joint 13 is melted and joined to the stem 4 by flowing current between the electrodes.
  • FIG. 4 is an enlarged cross-sectional view of the vicinity of the lower end of the barrel main body 10 in a state in which the electrode is disposed.
  • the contact surface 20a is in contact with the upper surface 11a of the collar 11 as described above, and the side surface 20b is in close proximity to the outer peripheral surface 10a of the barrel main body 10.
  • the corner 20c formed by the contact surface 20a and the side surface 20b is formed in a chamfered shape as shown by a broken line in the initial state, the first electrode 20 is polished after use, etc. It is right-angled by
  • a concave relief is formed so as to cover the corner formed by the outer peripheral surface 10a of the barrel body 10 and the upper surface 11a of the flange 11. Since the portion 14 is formed, the corner portion 20c of the first electrode 20 does not interfere with the lens barrel 2 side, and the contact surface 20a of the first electrode 20 reliably contacts the upper surface 11a of the flange portion 11 And can be pressed. That is, the electrode used for welding can be reliably in contact with the outer peripheral surface of the lens barrel 2, and the life reduction of the electrode can be suppressed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)
  • Lens Barrels (AREA)

Abstract

Provided is a lens with a lens barrel, wherein an electrode which is used for welding can be certainly brought into abutment with an outer peripheral surface of a lens barrel. A lens (3) is held in a cylindrical lens barrel (2) which comprises a lens barrel body (10) which holds the lens (3) at an inner peripheral surface of the lens barrel body, and a flange (11) which is formed by outwardly extending a lower end surface of the lens barrel body (10). The flange (11) is provided with a weld portion (13) on a lower surface of the flange (11), and the lens barrel body (10) is provided with a cut-away portion (14) in the form of a recess at a corner defined between the upper surface of the flange (11) and the lower end of the outer peripheral surface of the lens barrel body (10).

Description

鏡筒付レンズLens with lens barrel
　本発明は、筒状の鏡筒内にレンズを保持してなる鏡筒付レンズに関し、特に下端部に鍔部を有してステム等に対し溶接接合される鏡筒付レンズに関する。 The present invention relates to a lens with a lens barrel formed by holding a lens in a cylindrical lens barrel, and more particularly to a lens with a lens barrel having a flange at its lower end and welded to a stem or the like.
　従来、光通信などの分野において、半導体レーザーを気密密封した状態で用いることによって、酸化による劣化を防止することが知られている。半導体レーザーを密封するために、金属製のステムに半導体レーザーを固定し、ステムを覆うように鏡筒付レンズを設けると共に、鏡筒の下面とステムを溶接接合することも知られている。このように用いられる鏡筒付レンズとしては、例えば特許文献１に挙げるようなものがある。 Conventionally, in the field of optical communication and the like, it is known to prevent deterioration due to oxidation by using a semiconductor laser in a hermetically sealed state. In order to seal the semiconductor laser, it is also known to fix the semiconductor laser to a metal stem, provide a lens with a lens barrel so as to cover the stem, and weld the lower surface of the lens barrel to the stem by welding. As a lens with a lens barrel used in this way, there exists a thing which is mentioned to patent document 1, for example.
特開２００７－７３８７４号公報JP 2007-73874 A
　鏡筒付レンズは、レンズを内周面に保持する筒状の鏡筒本体部と、鏡筒本体部の下端から外周側に延出されてなる鍔部とからなり、鏡筒本体部と鍔部は、略直角をなすように形成される。また、鏡筒の外周面において、鏡筒本体部と鍔部により構成される角部はＲ形状などの面取り形状を有するように形成される。 The lens with lens barrel includes a cylindrical lens barrel main body holding the lens on the inner peripheral surface, and a collar portion extended from the lower end of the lens barrel main body to the outer peripheral side. The portions are formed to form a substantially right angle. Further, on an outer peripheral surface of the lens barrel, a corner formed by the lens barrel main body and the flange portion is formed to have a chamfered shape such as an R shape.
　ここで、鏡筒付レンズをステムに溶接する部分の拡大断面図を図５に示す。この図では、鏡筒付レンズの鍔部５２近傍を拡大している。図５（ａ）に示すように、鍔部５２の下面には、突起状の溶接接合部５３が形成されており、この溶接接合部５３をステム５５の上面に載置し、鏡筒５０の鏡筒本体部５１の外周面５１ａに沿う複数の電極５９を鍔部５２の上面５２ａに当接させる。そして、電極５９からステム５５に電流を流すことにより、溶接接合部５３の先端部がステム５５に溶接接合される。 Here, an enlarged cross-sectional view of a portion for welding the lens with a lens barrel to the stem is shown in FIG. In this figure, the vicinity of the flange 52 of the lens with a lens barrel is enlarged. As shown in FIG. 5A, a projection-like weld joint 53 is formed on the lower surface of the flange 52, and the weld joint 53 is placed on the top of the stem 55. A plurality of electrodes 59 along the outer peripheral surface 51 a of the barrel main body 51 are brought into contact with the upper surface 52 a of the collar 52. The distal end of the weld joint 53 is welded to the stem 55 by passing a current from the electrode 59 to the stem 55.
　複数の電極５９は、各々側面５９ｂがチャッキングなどの方法によって鏡筒本体部５１の外周面５１ａに沿って固定され、下面５９ａが鍔部５２の上面５２ａに当接する。鏡筒本体部５１と鍔部５２によって構成される角部は、加工性などの観点からＲ形状を有している場合が多いので、これに対応して複数の電極５９の内周側の角部も面取り形状を有するように形成されている。これによって、複数の電極５９の下面５９ａは鏡筒５０の鍔部５２の上面５２ａに密着し、確実に溶接接合を行うことができる。 The side surfaces 59 b of the plurality of electrodes 59 are fixed along the outer peripheral surface 51 a of the barrel main body 51 by a method such as chucking, and the lower surface 59 a abuts on the upper surface 52 a of the flange 52. The corner formed by the lens barrel main body 51 and the collar 52 often has an R shape from the viewpoint of processability and the like, so the corners on the inner peripheral side of the plurality of electrodes 59 corresponding to this. The portion is also formed to have a chamfered shape. Thus, the lower surfaces 59a of the plurality of electrodes 59 are in close contact with the upper surface 52a of the flange portion 52 of the lens barrel 50, and welding can be reliably performed.
　電極５９は性能を維持するために、定期的に下面５９ａを研磨される。電極５９の下面５９ａが何度も研磨されると、角部の面取り形状が次第に失われ、図５（ｂ）に示すように、鏡筒５０の角部のＲ形状によって電極５９の下面５９ａが鍔部５２の上面５２ａに充分に当接できないこととなる。このように電極５９の下面５９ａが鍔部５２の上面５２ａに充分に当接できないと、溶接に悪影響を及ぼすと共に、不正な溶接状態により電極の寿命を短くすることともなる。 The electrode 59 is periodically polished on the lower surface 59a to maintain performance. If the lower surface 59a of the electrode 59 is polished many times, the chamfered shape of the corner is gradually lost, and as shown in FIG. 5B, the lower surface 59a of the electrode 59 is changed by the R shape of the corner of the lens barrel 50. It will be impossible to abut the upper surface 52a of the flange 52 sufficiently. If the lower surface 59a of the electrode 59 can not abut sufficiently on the upper surface 52a of the flange 52 as described above, welding is adversely affected and the life of the electrode is shortened due to an improper welding state.
　本発明は前記課題を鑑みてなされたものであり、溶接接合に用いられる電極が鏡筒の外周面に確実に当接することのできる鏡筒付レンズを提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a lens with a lens barrel in which an electrode used for welding can abut against the outer peripheral surface of the lens barrel with certainty.
　前記課題を解決するため、本発明に係る鏡筒付レンズは、筒状の鏡筒内にレンズが保持されてなる鏡筒付レンズにおいて、
　前記鏡筒は、内周面に前記レンズを保持する鏡筒本体部と、該鏡筒本体部の下端面が外周側に延出されてなる鍔部とを備え、該鍔部の下面には溶接接合部が形成され、
　前記鏡筒本体部の外周面下端部には、前記鍔部の上面との間に形成される角部にかかるように凹状の逃げ部が形成されてなることを特徴として構成されている。 In order to solve the above problems, the lens with a lens barrel according to the present invention is a lens with a lens barrel formed by holding the lens in a cylindrical lens barrel,
The lens barrel includes a lens barrel main body holding the lens on an inner peripheral surface, and a collar portion having a lower end surface of the lens barrel main portion extended to the outer peripheral side, and the lower surface of the collar portion Welded joints are formed,
The outer peripheral surface lower end portion of the lens barrel main body portion is characterized in that a concave relief portion is formed so as to cover a corner portion formed with the upper surface of the collar portion.
　また、本発明に係る鏡筒付レンズは、前記逃げ部は前記鍔部側の面が該鍔部の上面と面一状となるように形成されることを特徴として構成されている。 Further, the lens with a lens barrel according to the present invention is characterized in that the relief portion is formed so that the surface on the side of the ridge portion is flush with the upper surface of the ridge portion.
　さらに、本発明に係る鏡筒付レンズは、前記逃げ部は前記鏡筒本体部の外周面の全周に渡って形成されることを特徴として構成されている。 Furthermore, the lens with a lens barrel according to the present invention is characterized in that the relief portion is formed over the entire circumference of the outer peripheral surface of the lens barrel main body.
　本発明に係る鏡筒付レンズによれば、鏡筒本体部の外周面下端部には、鍔部の上面との間に形成される角部にかかるように凹状の逃げ部が形成されてなることにより、鏡筒本体部の外周面に沿う側面を有した電極により鍔部の上面を押圧する場合において、鏡筒本体部の外周面と鍔部の上面により形成される角部に電極が干渉しないようにすることができ、電極を鍔部の上面に対し確実に当接させて、電極の寿命低下を抑えることができる。 According to the lens with a lens barrel of the present invention, a concave relief portion is formed at the lower end portion of the outer peripheral surface of the lens barrel main body portion so as to cover the corner portion formed with the upper surface of the collar portion. Thus, when pressing the upper surface of the collar by the electrode having the side surface along the outer peripheral surface of the barrel main body, the electrode interferes with the corner formed by the outer peripheral surface of the barrel main portion and the upper surface of the collar In this case, the electrode can be reliably brought into contact with the upper surface of the buttock to suppress the reduction in the life of the electrode.
　また、本発明に係る鏡筒付レンズによれば、逃げ部は鍔部側の面が該鍔部と面一状となるように形成されることにより、逃げ部と鍔部の上面との間に段差が生じないので、電極を鍔部に対してより確実に当接させることができる。 Further, according to the lens with a lens barrel of the present invention, the relief portion is formed so that the surface on the side of the ridge is flush with the ridge, so that the clearance between the relief and the upper surface of the ridge is obtained. Since there is no difference in level, the electrode can be more reliably in contact with the buttocks.
　さらに、本発明に係る鏡筒付レンズによれば、逃げ部は鏡筒本体部の外周面の全周に渡って形成されることにより、電極を全周に渡って鍔部の上面に対し確実に当接させることができる。 Furthermore, according to the lens with lens barrel of the present invention, the relief portion is formed over the entire circumference of the outer peripheral surface of the lens barrel main body, so that the electrode can be secured against the upper surface of the collar portion over the entire circumference. It can be made to abut.
本実施形態における鏡筒付レンズの取付状態の断面図である。It is sectional drawing of the attachment state of the lens with a lens barrel in this embodiment. 鏡筒付レンズのうち鏡筒本体部の下端付近の拡大断面図である。It is an expanded sectional view of lower end vicinity of a lens-barrel main-body part among lenses with a lens-barrel. 鏡筒付レンズのステムに対する溶接時の断面図である。It is a sectional view at the time of welding to a stem of a lens with a lens barrel. 電極が配置された状態における鏡筒本体部の下端付近の拡大断面図である。FIG. 7 is an enlarged cross-sectional view of the vicinity of the lower end of the barrel main body in a state in which an electrode is disposed. 従来の鏡筒付レンズをステムに溶接する部分の拡大断面図である。It is an expanded sectional view of a portion which welds a conventional lens with a lens barrel to a stem.
　本発明の実施形態について図面に沿って詳細に説明する。図１には、本実施形態における鏡筒付レンズの取付状態の断面図を示している。この図に示すように、鏡筒付レンズ１は、半導体レーザー５を上面に設けた金属製のステム４に載置される。鏡筒付レンズ１は半導体レーザー５の設けられる領域を封止すると共に、半導体レーザー５からの光を透過させると共に平行光あるいは収束光とするレンズ３を有している。 Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional view of an attached state of the lens with a lens barrel in the present embodiment. As shown in this figure, the lens with barrel 1 is mounted on a metal stem 4 provided with a semiconductor laser 5 on the top surface. The lens with lens barrel 1 seals a region where the semiconductor laser 5 is provided, and has a lens 3 for transmitting light from the semiconductor laser 5 and for forming parallel light or convergent light.
　鏡筒付レンズ１は、金属からなる筒状の鏡筒２と、その内部に納められるレンズ３により構成されている。鏡筒２は、円筒状に形成された鏡筒本体部１０と、鏡筒本体部１０の下端から外周側に延出するように形成された鍔部１１とからなっている。鏡筒本体部１０の内周面１０ｂには、レンズ３が保持されている。 The lens with lens barrel 1 is composed of a cylindrical lens barrel 2 made of metal and a lens 3 housed inside. The lens barrel 2 includes a barrel main body 10 formed in a cylindrical shape, and a collar portion 11 formed to extend from the lower end of the barrel main body 10 to the outer peripheral side. The lens 3 is held on the inner circumferential surface 10 b of the barrel body 10.
　鍔部１１の下面にはステム４に対して載置されると共に、溶接により接合される突起状の溶接接合部１３が形成されている。溶接接合部１３は、鍔部１１の下面の全周に渡って形成されている。 On the lower surface of the flange portion 11, a projecting weld joint 13 is formed which is mounted on the stem 4 and joined by welding. Weld joint 13 is formed over the entire circumference of the lower surface of flange 11.
　図２には、鏡筒付レンズ１のうち鏡筒本体部１０の下端付近の拡大断面図を示している。鍔部１１の下面に形成される溶接接合部１３は、鏡筒本体部１０の内周面１０ｂよりも外周寄りであって、かつ鏡筒本体部１０の外周面１０ａよりも内周寄りの位置に形成されている。 FIG. 2 shows an enlarged cross-sectional view of the vicinity of the lower end of the barrel main body 10 of the lens with barrel 1. Weld joint 13 formed on the lower surface of flange 11 is closer to the outer periphery than inner peripheral surface 10b of lens barrel main body 10 and is closer to the inner periphery than outer peripheral surface 10a of lens barrel main body 10 Is formed.
　溶接接合部１３は、突出の根元側から先端側に向かって先細状となるように形成されている。溶接接合部１３のうち外周側を向く面１３ａは鍔部１１の下面に対して傾斜状となるように形成され、一方で内周側を向く面１３ｂは鍔部１１の下面に対して略垂直状となるように形成されている。 The weld joint 13 is formed to be tapered from the root side of the protrusion to the tip side. The surface 13a of the weld joint 13 facing the outer peripheral side is formed to be inclined with respect to the lower surface of the collar 11, while the surface 13b facing the inner peripheral is substantially perpendicular to the lower surface of the collar 11 It is formed to be in the shape of a circle.
　また、鍔部１１の内周面には、下端角部に切欠部１５が形成されている。切欠部１５は、内周側面が溶接接合部１３の内周側を向く面１３ｂと面一状となるように形成されている。このように溶接接合部１３が内外周方向に非対称な形状に形成されると共に、切欠部１５が形成されていることにより、後述する溶接時において電極による押圧を安定的に行うことができる。 Further, a notch 15 is formed at the lower end corner of the inner peripheral surface of the collar 11. The notch 15 is formed so that the inner peripheral side surface is flush with the surface 13 b facing the inner peripheral side of the weld joint 13. As described above, the weld joint portion 13 is formed in an asymmetrical shape in the inner and outer peripheral directions and the notch portion 15 is formed, whereby pressing by the electrode can be stably performed at the time of welding described later.
　鏡筒本体部１０の外周面１０ａの下端、すなわち鍔部１１の上面１１ａとの突き合わせ部分には、全周に渡って凹状の逃げ部１４が形成されている。逃げ部１４は、鏡筒本体部１０の外周面１０ａと鍔部１１の上面１１ａによって形成される角部にかかるように形成され、鍔部１１の上面１１ａと面一状な鍔部側の面１４ａを有している。鍔部側の面１４ａの最深部から鏡筒本体部１０の外周面１０ａにかけては、傾斜面状に形成されて、断面略Ｖ字状をなすように形成されている。この逃げ部１４は、以下に説明する溶接時において機能する。 At the lower end of the outer peripheral surface 10 a of the barrel main body portion 10, that is, the butted portion with the upper surface 11 a of the collar portion 11, a concave relief portion 14 is formed over the entire circumference. The relief portion 14 is formed on a corner portion formed by the outer peripheral surface 10 a of the lens barrel main body portion 10 and the upper surface 11 a of the ridge portion 11, and the surface on the ridge portion side flush with the upper surface 11 a of the ridge portion 11 14a is included. From the deepest part of the surface 14a on the buttocks side to the outer peripheral surface 10a of the barrel main body 10, it is formed in an inclined surface shape, and is formed to have a substantially V-shaped cross section. The relief portion 14 functions at the time of welding described below.
　図３には、鏡筒付レンズ１のステム４に対する溶接時の断面図を示している。この図に示すように、鏡筒付レンズ１をステム４に対して接合する際には、鏡筒付レンズ１を上方から覆うように第１電極２０が設けられ、またステム４を下方から支持するように第２電極２１が設けられる。 FIG. 3 shows a cross-sectional view at the time of welding to the stem 4 of the lens with barrel 1. As shown in this figure, when joining the lens with lens barrel 1 to the stem 4, the first electrode 20 is provided to cover the lens with lens barrel 1 from above, and the stem 4 is supported from below The second electrode 21 is provided to do so.
　第１電極２０は、鏡筒２を構成する鍔部１１の上面１１ａに当接して押圧する当接面２０ａを下面側に有し、当接面２０ａより内周側は鏡筒本体部１０の外周形状に略適合するように形成されると共に、その側面２０ｂは鏡筒本体部１０の外周面１０ａに近接する。 The first electrode 20 has an abutting surface 20a on the lower surface side which contacts and presses the upper surface 11a of the flange portion 11 constituting the lens barrel 2, and the inner peripheral side of the abutting surface 20a is the lens barrel main body 10 The side surface 20 b is formed so as to substantially conform to the outer peripheral shape, and the side surface 20 b approaches the outer peripheral surface 10 a of the barrel body 10.
　第２電極２１は、第１電極２０の当接面２０ａと対向しステム４の下面側を押圧する当接面２１ａを有している。そして、第１電極２０と第２電極２１により鏡筒２の鍔部１１とステム４が挟圧される。これにより、鍔部１１の溶接接合部１３がステム４に対して圧接した状態となる。第１電極２０と第２電極２１により鏡筒２とステム４を押圧した状態で、電極間に電流を流すことにより、溶接接合部１３の先端部が溶融しステム４に対して接合される。 The second electrode 21 has an abutment surface 21 a that faces the abutment surface 20 a of the first electrode 20 and presses the lower surface side of the stem 4. Then, the flange portion 11 of the barrel 2 and the stem 4 are pinched by the first electrode 20 and the second electrode 21. As a result, the weld joint 13 of the flange 11 is in a state of being in pressure contact with the stem 4. In a state where the lens barrel 2 and the stem 4 are pressed by the first electrode 20 and the second electrode 21, the tip of the weld joint 13 is melted and joined to the stem 4 by flowing current between the electrodes.
　図４には、電極が配置された状態における鏡筒本体部１０の下端付近の拡大断面図を示している。第１電極２０は、前述のように当接面２０ａが鍔部１１の上面１１ａに当接すると共に、側面２０ｂが鏡筒本体部１０の外周面１０ａに近接している。また、当接面２０ａと側面２０ｂとでなす角部２０ｃは、本来の初期状態であれば破線で示すように面取り形状に形成されているが、第１電極２０が使用後に研磨されることなどにより、直角状となっている。 FIG. 4 is an enlarged cross-sectional view of the vicinity of the lower end of the barrel main body 10 in a state in which the electrode is disposed. In the first electrode 20, the contact surface 20a is in contact with the upper surface 11a of the collar 11 as described above, and the side surface 20b is in close proximity to the outer peripheral surface 10a of the barrel main body 10. In addition, although the corner 20c formed by the contact surface 20a and the side surface 20b is formed in a chamfered shape as shown by a broken line in the initial state, the first electrode 20 is polished after use, etc. It is right-angled by
　このように第１電極２０の角部２０ｃが直角状となっていても、鏡筒本体部１０の外周面１０ａと鍔部１１の上面１１ａとで形成される角部にかかるように凹状の逃げ部１４が形成されているため、第１電極２０の角部２０ｃが鏡筒２側に干渉することがなく、第１電極２０の当接面２０ａが確実に鍔部１１の上面１１ａに当接され、押圧することができる。すなわち、溶接接合に用いられる電極が鏡筒２の外周面に確実に当接することができ、電極の寿命低下を抑えることができる。 As described above, even if the corner 20c of the first electrode 20 is in a right-angled shape, a concave relief is formed so as to cover the corner formed by the outer peripheral surface 10a of the barrel body 10 and the upper surface 11a of the flange 11. Since the portion 14 is formed, the corner portion 20c of the first electrode 20 does not interfere with the lens barrel 2 side, and the contact surface 20a of the first electrode 20 reliably contacts the upper surface 11a of the flange portion 11 And can be pressed. That is, the electrode used for welding can be reliably in contact with the outer peripheral surface of the lens barrel 2, and the life reduction of the electrode can be suppressed.
　以上、本発明の実施形態について説明したが、本発明の適用は本実施形態には限られず、その技術的思想の範囲内において様々に適用されうるものである。 As mentioned above, although embodiment of this invention was described, application of this invention is not restricted to this embodiment, It can be variously applied within the range of the technical thought.
　　１　　鏡筒付レンズ
　　２　　鏡筒
　　３　　レンズ
　　４　　ステム
　　５　　半導体レーザー
　　６　　リード線
　１０　　鏡筒本体部
　１１　　鍔部
　１３　　溶接接合部
　１４　　逃げ部
　１４ａ　逃げ部の鍔部側の面
　１５　　切欠部
　２０　　第１電極 DESCRIPTION OF SYMBOLS 1 lens with lens barrel 2 lens barrel 3 lens 4 stem 5 semiconductor laser 6 lead wire 10 lens barrel main body 11 collar 13 weld joint 14 relief 14 a surface of relief portion on ridge side 15 notch 20 first electrode

Claims (3)

  1. 　筒状の鏡筒内にレンズが保持されてなる鏡筒付レンズにおいて、
    　前記鏡筒は、内周面に前記レンズを保持する鏡筒本体部と、該鏡筒本体部の下端面が外周側に延出されてなる鍔部とを備え、該鍔部の下面には溶接接合部が形成され、
    　前記鏡筒本体部の外周面下端部には、前記鍔部の上面との間に形成される角部にかかるように凹状の逃げ部が形成されてなることを特徴とする鏡筒付レンズ。     In a lens with a lens barrel formed by holding the lens in a cylindrical lens barrel,
    The lens barrel includes a lens barrel main body holding the lens on an inner peripheral surface, and a collar portion having a lower end surface of the lens barrel main portion extended to the outer peripheral side, and the lower surface of the collar portion Welded joints are formed,
    A lens-equipped lens according to claim 1, wherein a concave relief portion is formed at a lower end portion of the outer peripheral surface of the lens barrel main body portion so as to cover a corner portion formed with the upper surface of the collar portion.
  2. 　前記逃げ部は前記鍔部側の面が該鍔部の上面と面一状となるように形成されることを特徴とする請求項１記載の鏡筒付レンズ。 2. The lens according to claim 1, wherein the relief portion is formed such that the surface on the side of the buttocks is flush with the upper surface of the buttocks.
  3. 　前記逃げ部は前記鏡筒本体部の外周面の全周に渡って形成されることを特徴とする請求項１または２記載の鏡筒付レンズ。 3. The lens with lens barrel according to claim 1, wherein the relief portion is formed over the entire circumference of the outer peripheral surface of the lens barrel main body.
PCT/JP2010/054336 2009-03-30 2010-03-15 Lens with lens barrel WO2010116861A1 (en)

Applications Claiming Priority (2)

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JP2009-081274 2009-03-30
JP2009081274A JP2012112985A (en) 2009-03-30 2009-03-30 Lens with lens barrel

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03265529A (en) * 1990-02-14 1991-11-26 Alps Electric Co Ltd Production of optical parts and method for registering produced optical parts and light emitting element or light receiving element
JP2006106504A (en) * 2004-10-07 2006-04-20 Nippon Electric Glass Co Ltd Optical cap component
JP2007073874A (en) * 2005-09-09 2007-03-22 Shinko Electric Ind Co Ltd Semiconductor device and metal cap used therefor
JP2009105288A (en) * 2007-10-24 2009-05-14 Nippon Electric Glass Co Ltd Optical cap component

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03265529A (en) * 1990-02-14 1991-11-26 Alps Electric Co Ltd Production of optical parts and method for registering produced optical parts and light emitting element or light receiving element
JP2006106504A (en) * 2004-10-07 2006-04-20 Nippon Electric Glass Co Ltd Optical cap component
JP2007073874A (en) * 2005-09-09 2007-03-22 Shinko Electric Ind Co Ltd Semiconductor device and metal cap used therefor
JP2009105288A (en) * 2007-10-24 2009-05-14 Nippon Electric Glass Co Ltd Optical cap component

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