WO2010116861A1 - Lentille avec barillet d'objectif - Google Patents

Lentille avec barillet d'objectif 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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WO
WIPO (PCT)
Prior art keywords
lens
lens barrel
outer peripheral
electrode
main body
Prior art date
Application number
PCT/JP2010/054336
Other languages
English (en)
Japanese (ja)
Inventor
茂 畠山
Original Assignee
アルプス電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アルプス電気株式会社 filed Critical アルプス電気株式会社
Publication of WO2010116861A1 publication Critical patent/WO2010116861A1/fr

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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

L'invention porte sur une lentille avec un barillet d'objectif, dans laquelle une électrode qui est utilisée pour le soudage peut être amenée de façon certaine en butée avec une surface périphérique externe d'un barillet d'objectif. Une lentille (3) est maintenue dans un barillet d'objectif cylindrique (2) qui comprend un corps de barillet d'objectif (10) qui maintient la lentille (3) au niveau d'une surface périphérique interne du corps de barillet d'objectif, et un rebord (11) qui est formé par extension vers l'extérieur d'une surface d'extrémité inférieure du corps de barillet d'objectif (10). Le rebord (11) comporte une partie soudée (13) sur une surface inférieure du rebord (11), et le corps de barillet d'objectif (10) comporte une partie découpée (14) sous la forme d'une cavité au niveau d'un coin défini entre la surface supérieure du rebord (11) et l'extrémité inférieure de la surface périphérique externe du corps de barillet d'objectif.
PCT/JP2010/054336 2009-03-30 2010-03-15 Lentille avec barillet d'objectif WO2010116861A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-081274 2009-03-30
JP2009081274A JP2012112985A (ja) 2009-03-30 2009-03-30 鏡筒付レンズ

Publications (1)

Publication Number Publication Date
WO2010116861A1 true WO2010116861A1 (fr) 2010-10-14

Family

ID=42936148

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/054336 WO2010116861A1 (fr) 2009-03-30 2010-03-15 Lentille avec barillet d'objectif

Country Status (2)

Country Link
JP (1) JP2012112985A (fr)
WO (1) WO2010116861A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03265529A (ja) * 1990-02-14 1991-11-26 Alps Electric Co Ltd 光学部品の製造方法および製造された光学部品と発光素子あるいは受光素子との位置合わせ方法
JP2006106504A (ja) * 2004-10-07 2006-04-20 Nippon Electric Glass Co Ltd 光学用キャップ部品
JP2007073874A (ja) * 2005-09-09 2007-03-22 Shinko Electric Ind Co Ltd 半導体装置およびこれに用いる金属キャップ
JP2009105288A (ja) * 2007-10-24 2009-05-14 Nippon Electric Glass Co Ltd 光学用キャップ部品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03265529A (ja) * 1990-02-14 1991-11-26 Alps Electric Co Ltd 光学部品の製造方法および製造された光学部品と発光素子あるいは受光素子との位置合わせ方法
JP2006106504A (ja) * 2004-10-07 2006-04-20 Nippon Electric Glass Co Ltd 光学用キャップ部品
JP2007073874A (ja) * 2005-09-09 2007-03-22 Shinko Electric Ind Co Ltd 半導体装置およびこれに用いる金属キャップ
JP2009105288A (ja) * 2007-10-24 2009-05-14 Nippon Electric Glass Co Ltd 光学用キャップ部品

Also Published As

Publication number Publication date
JP2012112985A (ja) 2012-06-14

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