WO2014045824A1 - 光学素子及びその成形方法、成形装置 - Google Patents

光学素子及びその成形方法、成形装置 Download PDF

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Publication number
WO2014045824A1
WO2014045824A1 PCT/JP2013/073112 JP2013073112W WO2014045824A1 WO 2014045824 A1 WO2014045824 A1 WO 2014045824A1 JP 2013073112 W JP2013073112 W JP 2013073112W WO 2014045824 A1 WO2014045824 A1 WO 2014045824A1
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WO
WIPO (PCT)
Prior art keywords
mold
optical element
preform
shape
molding
Prior art date
Application number
PCT/JP2013/073112
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
純 嶋川
藤原　隆行
Original Assignee
富士フイルム株式会社
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 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to JP2014536715A priority Critical patent/JP5759078B2/ja
Priority to CN201380049021.6A priority patent/CN104661801B/zh
Publication of WO2014045824A1 publication Critical patent/WO2014045824A1/ja

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Classifications

    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/06—Construction of plunger or mould
    • C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3405—Feeding the material to the mould or the compression means using carrying means
    • B29C2043/3411—Feeding the material to the mould or the compression means using carrying means mounted onto arms, e.g. grippers, fingers, clamping frame, suction means
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
    • B29C2043/3628—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices moving inside a barrel or container like sleeve
    • 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
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/02—Press-mould materials
    • C03B2215/05—Press-mould die materials
    • C03B2215/06—Metals or alloys
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/40—Product characteristics
    • C03B2215/46—Lenses, e.g. bi-convex
    • C03B2215/49—Complex forms not covered by groups C03B2215/47 or C03B2215/48
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/61—Positioning the glass to be pressed with respect to the press dies or press axis
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/66—Means for providing special atmospheres, e.g. reduced pressure, inert gas, reducing gas, clean room
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Definitions

  • the preform placement allowable range A3 is a range on the first transfer surface 51a in which the preform moves by gravity to the placement position S4 (see FIG. 9) where the preform should be placed.
  • the first transfer surface 51a it is the range between the vertices closest to the placement position S4 and the curved surface is convex upward. Therefore, as shown in FIG. 9, when the preform 55 is placed at the placement position S1 outside the placement tolerance range A3, the first transfer surface 51a is moved along the first transfer surface 51a. It moves to the mounting position S2 that is far from the center.
  • the preform 55 is placed at the placement position S3 within the placement allowable range A3, the placement is located at the center of the first transfer surface 51a along the first transfer surface 51a. Move to position S4.
  • a method for molding an optical element includes a first mold, a second mold facing the first mold, and a first mold including a placing step and a compression molding step.
  • An optical element is compression-molded from a preform using a mold unit composed of a mold and a body mold that covers the periphery of the second mold.
  • the optical element includes a first aspherical surface on one surface having an extreme point where the shape on the optical axis is concave and the shape of the outer peripheral portion of the concave surface is convex.
  • the first mold has a convex portion directed to the second mold and a second extreme point transfer portion for transferring extreme points to the second mold.
  • the optical element molding apparatus of the present invention includes a first mold, a second mold, a body mold, and a pressure mechanism, and a second mold facing the first mold and the first mold.
  • An optical element is compression-molded from the preform by a mold unit having a mold.
  • the optical element includes a first aspheric surface having an extreme point at which the shape on the optical axis is concave and the shape of the outer peripheral portion of the concave surface is convex on one surface.
  • the portion that transfers the shape on the optical axis is convex toward the second mold, and the extreme point transfer portion that transfers the extreme points is the first one.
  • the allowable range for placing the preform can be greatly expanded, problems such as air traps can be prevented without degrading the optical properties of the optical element to be molded.
  • the optical element molding method and apparatus of the present invention can be used particularly effectively when molding an optical element 2 as shown in FIGS. 1 and 2, for example.
  • the optical element 2 has a circular shape as shown in FIG. 2, and has a first optical surface 2a on one surface and a second optical surface 2b on the other surface, as shown in FIG.
  • the first optical surface 2a is a first aspherical surface having a first extreme point 2c having a concave shape on the optical axis K and a convex shape on the outer periphery thereof.
  • the second optical surface 2b is a second aspherical surface having a second extreme point whose shape on the optical axis K is a convex surface and whose outer periphery is concave.
  • the position of the second extreme value point is substantially opposite to the position of the first extreme value point 2c.
  • ribs 2d are provided at the peripheral ends of the first and second optical surfaces 2a and 2b.
  • the optical element molding apparatus 5 includes a preform supply mechanism 20 that supplies and places the preform 18.
  • the preform supply mechanism 20 is installed in the box 7, and includes a gripping member 20a, an arm member 20b, and a support column member 20c.
  • the grip member 20a is for gripping the preform 18, and is attached to the arm member 20b so as to be openable and closable.
  • the arm member 20b extends in a substantially horizontal direction from the support column member 20c arranged in an upright vertical posture, and the gripping member 20a is arranged at the tip of the arm member 20b.
  • the arm member 20b is attached so as to be movable along the support column member 20c, and the gripping member 20a moves integrally with the arm member 20b in the vertical direction.
  • the preform supply mechanism 20 places the preform 18 supplied from outside the box 7 on the extreme point transfer unit 8c.
  • the preform supply mechanism 20 is not limited to the mode shown in FIG. 3, and may have another mode.
  • preform material examples include glass and resin. That is, the preform 18 can be made of glass or resin. In particular, it is desirable to use injection-molded resin as the preform 18 because it is the easiest and the lowest cost. It is possible to place a plurality of preforms 18 for one molding, but it is most convenient to mold an optical element by placing one preform on the extreme point transfer part 8c only once. Furthermore, it is desirable in that it can be mounted at low cost and an optical element can be molded. In particular, the present invention is for forming an optical element by placing one preform, which can be easily produced, only once.
  • the shape of the preform 18 is substantially spherical because it is easy to perform injection molding. Further, it is preferable that the radius of curvature of the substantially spherical preform 18 is smaller than the approximate radius of curvature of the extreme point transfer portion 8c in that the probability of physical occurrence of air traps can be reduced. .
  • the cooling mechanisms 24 and 25 and the temperature control mechanism 26 are operated to cool the molded product 32 via the first mold 8, the body mold 9, and the second mold 10.
  • the moving mechanism 14 and the pressurizing mechanism 15 are driven to move the second mold 10 with respect to the barrel mold 9, the barrel mold 9 with respect to the first mold 8, and the retreat position in order. Move to.
  • an optical element having a complicated shape can be obtained by compression molding without causing an air trap due to poor mounting. Therefore, when the obtained optical element is used, an optical element unit (lens unit) having various types of optical characteristics that is difficult to realize by a combination of simple optical elements such as a concave lens and a convex lens can be configured. it can.
  • the first mold 41 has a tip portion having a substantially circular cross section, and the same first transfer surface 8a as the first die 8 is formed on the end face of the tip portion.
  • the extreme point transfer portion 8 c on the first transfer surface 8 a is a point that substantially corresponds to the extreme point 2 c of the optical element 2.
  • a first rib portion 41b is formed on the outer peripheral portion of the first transfer surface 8a.
  • the first mold 41 is fixed to the central portion of the bottom surface of the box 7 with the first transfer surface 8a facing upward.
  • the preform placement allowable range A2 shown in FIG. 6A is a placement on which the preform should be placed.
  • This placement allowable range A2 is a range that is allowed as a supply place because the preform 18 is placed on the extreme point transfer portion 8c.
  • recess traces While traces due to the recesses 44 (hereinafter referred to as recess traces) remain on the side of the preform 18 close to the mounting position 18a, almost no recess traces remain on the side far from the mounting position 18a.
  • the placement allowable range greatly increases from A3 to A2 as compared with the conventional technique shown in FIG.
  • the probability of occurrence of an air trap is greatly reduced.
  • the first and second transfer surfaces 8a and 9a of the first and second molds 41 and 42 are not subjected to any work, the optical properties of the optical element to be molded are not deteriorated.
  • the preform when the optical element is compression-molded, the preform is intentionally placed on a portion that is not a substantially central portion of the mold unit having a transfer surface for transferring the surface of the optical element. This is based on the technical idea of expanding the allowable placement range of the preform and reducing the probability of air trap occurrence. Therefore, it is understood that the present invention includes all methods and apparatuses and optical elements related to compression molding performed based on the same technical idea.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
PCT/JP2013/073112 2012-09-21 2013-08-29 光学素子及びその成形方法、成形装置 WO2014045824A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014536715A JP5759078B2 (ja) 2012-09-21 2013-08-29 光学素子の成形方法、及び成形装置
CN201380049021.6A CN104661801B (zh) 2012-09-21 2013-08-29 光学元件的成形方法及成形装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-207735 2012-09-21
JP2012207735 2012-09-21

Publications (1)

Publication Number Publication Date
WO2014045824A1 true WO2014045824A1 (ja) 2014-03-27

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CN112857221B (zh) * 2021-01-15 2023-02-24 海伯森技术（深圳）有限公司 一种快速定位球面极值点的扫描方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09249424A (ja) * 1996-03-15 1997-09-22 Canon Inc 光学素子の成形法
JPH11151730A (ja) * 1997-11-21 1999-06-08 Matsushita Electric Ind Co Ltd 光学素子の成形方法および光学素子
JP2001058836A (ja) * 1999-06-11 2001-03-06 Sony Corp ガラス又はプラスチック成形品の成形方法及びこの方法により製作されたガラス又はプラスチック成形品
JP2006001803A (ja) * 2004-06-18 2006-01-05 Hoya Corp モールドプレス成形型、光学素子の製造方法、及びモールドプレスレンズ
JP2009069221A (ja) * 2007-09-10 2009-04-02 Olympus Corp 光学部品

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60209180T2 (de) * 2001-01-24 2006-09-28 Novartis Ag Verfahren zur Herstellung von Linsen
JP5161525B2 (ja) * 2007-09-26 2013-03-13 オリンパス株式会社 光学素子の成形方法
JP2010137999A (ja) * 2008-12-09 2010-06-24 Olympus Corp 光学素子の製造方法及びその製造装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09249424A (ja) * 1996-03-15 1997-09-22 Canon Inc 光学素子の成形法
JPH11151730A (ja) * 1997-11-21 1999-06-08 Matsushita Electric Ind Co Ltd 光学素子の成形方法および光学素子
JP2001058836A (ja) * 1999-06-11 2001-03-06 Sony Corp ガラス又はプラスチック成形品の成形方法及びこの方法により製作されたガラス又はプラスチック成形品
JP2006001803A (ja) * 2004-06-18 2006-01-05 Hoya Corp モールドプレス成形型、光学素子の製造方法、及びモールドプレスレンズ
JP2009069221A (ja) * 2007-09-10 2009-04-02 Olympus Corp 光学部品

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JPWO2014045824A1 (ja) 2016-08-18
JP5759078B2 (ja) 2015-08-05
CN104661801B (zh) 2016-09-21
CN104661801A (zh) 2015-05-27

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