JPS6067132A - Forming method of optical element - Google Patents
Forming method of optical elementInfo
- Publication number
- JPS6067132A JPS6067132A JP17537783A JP17537783A JPS6067132A JP S6067132 A JPS6067132 A JP S6067132A JP 17537783 A JP17537783 A JP 17537783A JP 17537783 A JP17537783 A JP 17537783A JP S6067132 A JPS6067132 A JP S6067132A
- Authority
- JP
- Japan
- Prior art keywords
- curved surface
- spherical
- optical material
- mold
- optical element
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
- C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
- C03B23/0357—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet by suction without blowing, e.g. with vacuum or by venturi effect
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
-
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/266—Auxiliary operations after the thermoforming operation
- B29C51/268—Cutting, rearranging and joining the cut parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/007—Using fluid under pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【発明の詳細な説明】
従来、非球面形状のレンズ、ミラーは研削機でめる形状
と等比に製作したテングレートを用いた倣い加工、ある
いは数値制御研削加工機で研削加工を行った後に、弾性
を有する研摩シート等で均等研摩をしていた。更には、
第1図に示すようなリング状の受け具1と真空力でレン
ズ2を変形させた後に、球面あるいは平面に研摩加工を
行〜・1真空を解除して変形を取り除いた時に所定の形
状をめようとする方法も考えられた。[Detailed Description of the Invention] Conventionally, aspherical lenses and mirrors have been produced by profiling using a tenten rate made in the same ratio as the shape produced by a grinding machine, or by grinding using a numerically controlled grinding machine. , uniform polishing was performed using an elastic polishing sheet or the like. Furthermore,
After deforming the lens 2 using a ring-shaped receiver 1 and vacuum force as shown in Figure 1, polishing is performed on a spherical or flat surface. There were also ways to try to achieve this.
しかし、機械での研削加工による方法でIま、高t・精
度の高価な研削加工機を必要とするだけでなく、同じく
高い測定精度を有する高価な非球面の形状測定機も必要
とし、更に加工・測定をワーク1個1個で行わなければ
ならず、コスト高になると共に形状測定の精度も不十分
であり、精度の高〜・光学素子を製造出来ない欠点があ
った。又、ワークをリングで受けて変形させる方法も、
真空力の強弱により変形量が大巾に異なる複雑な形状が
出来ない。あるいはワークを受けるリングの形状が高い
精度で製作されているかを測定することは容易でなく、
安定して光学素子を作ることは不可fiシであった。However, the mechanical grinding method not only requires an expensive grinding machine with high precision and high precision, but also an expensive aspherical shape measuring machine with high measurement accuracy. Processing and measurement had to be carried out for each workpiece, which resulted in high costs and insufficient accuracy in shape measurement, making it impossible to manufacture highly accurate optical elements. There is also a method of deforming the workpiece by receiving it with a ring.
Complex shapes whose deformation amount varies widely depending on the strength of the vacuum force cannot be created. Also, it is not easy to measure whether the shape of the ring that receives the workpiece is manufactured with high precision.
It has been impossible to stably produce optical elements.
本発明は上記の従来の問題点を考慮し、レンズ・フィル
ター又は光束反射防止膜等非球面1球面の曲面を要求す
る光学素子の形成にあたって、所望の非球面又は球面に
正確に加工でき、かつ1個又は10ツトの作成に要する
時間を短縮することができる加工方鼠な提供することを
目的とする。The present invention has been developed in consideration of the above-mentioned conventional problems, and is capable of accurately processing into a desired aspherical or spherical surface when forming an optical element that requires a curved surface of one aspherical surface, such as a lens filter or a light flux antireflection film. It is an object of the present invention to provide a processing method that can shorten the time required to produce one or ten pieces.
第2図(a)〜(d)は本発明実施例の装置を示す。FIGS. 2(a) to 2(d) show an apparatus according to an embodiment of the present invention.
符号4は型を示し、鏡型は光学素子の形状に合わせて円
板、平板とする。鏡型の一面4a():面)は非球面又
は球面の曲面に仕上げる。Reference numeral 4 indicates a mold, and the mirror mold is a disk or a flat plate depending on the shape of the optical element. One surface 4a ( ) of the mirror shape is finished as an aspherical or spherical curved surface.
該曲面4aは光学素子がレンズの場合には幾何学的に又
数学的に計算された所定の非球面又は球面に仕上げる。When the optical element is a lens, the curved surface 4a is finished into a predetermined aspherical or spherical surface calculated geometrically or mathematically.
前記型4には貫通孔4bが複数に設けられており、該貫
通孔4bは前記曲面4aから該曲面4aと反対側の面4
Cに向かって平行に設ける。The mold 4 is provided with a plurality of through holes 4b, and the through holes 4b extend from the curved surface 4a to the surface 4 opposite to the curved surface 4a.
Install parallel to C.
4d1・4d2・4dg・・・・は型の曲面4a上に同
心円状に形成した溝を示し、該溝は前記貫通孔4b上に
形成し、更に4e1・4e2・・・・は略4ダに交鎖す
るように設けた曲面4a上の溝である。4d1, 4d2, 4dg... indicate grooves formed concentrically on the curved surface 4a of the mold, the grooves are formed above the through hole 4b, and 4e1, 4e2... indicate approximately 4 da. These are grooves on the curved surface 4a provided so as to intersect with each other.
6は前記型4を保持するとともに吸引する保持部材であ
る。該保持部材6は前記型4を収納保持する保持部6a
と吸引口6bを有する。Reference numeral 6 denotes a holding member that holds the mold 4 and sucks it. The holding member 6 is a holding portion 6a that stores and holds the mold 4.
and a suction port 6b.
第2図(C)は前記第2図(al・(blの装置を用い
て光学素子を作る工程を示す図であり、8はグラスチッ
ク材料又は光学ガラス材料から作られた素子材料である
。該素子材料8は前記型4の上部に置き、前記保持部材
6の吸引口6bより吸引する。FIG. 2(C) is a diagram showing the process of making an optical element using the apparatus shown in FIGS. The element material 8 is placed on the upper part of the mold 4 and sucked through the suction port 6b of the holding member 6.
凰4の下面4Cは保持部材6の保持面6Cよや浮ぎ上が
るように点支持し、吸引空気の導通路を形成する。The lower surface 4C of the hood 4 is supported at a point so as to rise slightly above the holding surface 6C of the holding member 6, thereby forming a passage for sucking air.
型40曲面4aの非球面又は球面に沿うように吸引され
た素子材料8は第2図(C) K示すように弾性変形内
で変形する。The element material 8 sucked along the aspherical or spherical surface of the curved surface 4a of the mold 40 deforms within an elastic deformation as shown in FIG. 2(C)K.
そして吸引した素子材料8の上面即ち、第2図(C12
点鎖線01−02で示す8at・8a2 の部分を切断
する。The upper surface of the element material 8 that has been sucked, that is, the upper surface of the element material 8 shown in FIG. 2 (C12
Cut the portions 8at and 8a2 indicated by the dotted chain lines 01-02.
その後吸引を解き、素子材料8を取り出すと第2図(d
)に示す如く、前記8a1・882が削り取られ非球面
又は球面形状を形成した曲面を有する光学素子が形作ら
れ、その後前記曲面を研摩・コーティングして光学素子
を仕上げる。After that, the suction is released and the element material 8 is taken out.
), the optical element having a curved surface having an aspherical or spherical shape is formed by cutting off the 8a1 and 882, and then the curved surface is polished and coated to finish the optical element.
内型4は平型状で前記溝は第6図のように交叉した溝で
もよい。又ワークを変形密着固定する方法としては真空
だけでなく、第4図のように接着剤10を使用してもよ
(・し、電磁チャック、バーネントチャック、静電チャ
ック等でクランプしてもよいし、外部から機械的に固定
してもよい。ワークは硝子に限らず、金属材料他の非金
属材料の場合もありうる。又、密着固定したワークの加
工は球面、平面に限らず非球面の加工でもよい。The inner mold 4 may be flat and the grooves may be intersecting grooves as shown in FIG. In addition, as a method of deforming and tightly fixing the workpiece, you can use not only a vacuum but also an adhesive 10 as shown in Figure 4. It is possible to fix the workpiece mechanically from the outside.The workpiece is not limited to glass, but can also be made of metal or other non-metallic materials.Also, the processing of closely fixed workpieces is not limited to spherical or flat surfaces, but can also be done on non-metallic surfaces. It is also possible to process a spherical surface.
以上のように本−発明によれば、型40曲面に複数の貫
通孔4bを設け、該貫通孔を通して光学素子材料を吸引
する方法の採用により曲面の各部に光学素子材料を密着
保持することができ、型の曲面を材料の面に正確に転写
することができる。As described above, according to the present invention, by providing a plurality of through holes 4b in the curved surface of the mold 40 and employing a method of sucking the optical element material through the through holes, it is possible to hold the optical element material in close contact with each part of the curved surface. The curved surface of the mold can be accurately transferred to the surface of the material.
更に、上記方法の採用により一回の吸引作業によ塾正確
に非球面又は球面を形成することができるため量産性を
高めることができた。Furthermore, by employing the above method, an aspherical or spherical surface can be formed accurately in a single suction operation, thereby increasing mass productivity.
第1図(a)・(b)・(C)は従来の方法による例を
示す図。
第2図(a)・(b)・(C) −(d)は本発明の実
施例を示し、笛りIi9I1mlt+Xg−面M 笛り
Win thll−? # I訃の扉蔗肝面M。
第2図(C)は装置の作動説明図、第2図(d)は仕上
がった光学素子の一例を示す図。
第6図は他の型の例の斜視図。
第4図(a)は型4に素子材料8を固定する他の例を示
す図。
第4図(b)は第4図(a)の凰から取り出した素子の
断面図。FIGS. 1(a), (b), and (C) are diagrams showing examples of conventional methods. FIGS. 2(a), (b), (C) and (d) show embodiments of the present invention. #I death door 蔗 liver side M. FIG. 2(C) is an explanatory diagram of the operation of the apparatus, and FIG. 2(d) is a diagram showing an example of a finished optical element. FIG. 6 is a perspective view of another example. FIG. 4(a) is a diagram showing another example of fixing the element material 8 to the mold 4. FIG. 4(b) is a sectional view of the element taken out from the screen of FIG. 4(a).
Claims (1)
曲面と反対側の面に向かう複数の貫通孔を有した型を有
し、 前記型の上面にプラスチック又はガラス材料からなる光
学材料を配置し前記型の一方より前記貫通孔を介して前
記光学材料を前記型の前記曲面に吸引し、前記型の曲面
に漬った光学材料の上面を切削除去することkより前記
光学材料に非球面又は球面形状を形成することを特徴と
する光学素子形成方法。(1) A mold having an aspherical or spherical curved surface and a plurality of through holes extending from the curved surface to the surface opposite to the curved surface, and an optical material made of plastic or glass material on the upper surface of the mold. The optical material is placed on one side of the mold through the through hole, and the optical material is sucked onto the curved surface of the mold, and the upper surface of the optical material immersed in the curved surface of the mold is removed. An optical element forming method characterized by forming a spherical surface or a spherical shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17537783A JPS6067132A (en) | 1983-09-22 | 1983-09-22 | Forming method of optical element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17537783A JPS6067132A (en) | 1983-09-22 | 1983-09-22 | Forming method of optical element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6067132A true JPS6067132A (en) | 1985-04-17 |
Family
ID=15995037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17537783A Pending JPS6067132A (en) | 1983-09-22 | 1983-09-22 | Forming method of optical element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6067132A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005033026A1 (en) * | 2003-09-24 | 2005-04-14 | Pilkington North America, Inc. | Press bending station for the bending of glass sheets |
JP2006245315A (en) * | 2005-03-03 | 2006-09-14 | Matsushita Electric Ind Co Ltd | Manufacturing method of lid with window glass |
-
1983
- 1983-09-22 JP JP17537783A patent/JPS6067132A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005033026A1 (en) * | 2003-09-24 | 2005-04-14 | Pilkington North America, Inc. | Press bending station for the bending of glass sheets |
JP2007506637A (en) * | 2003-09-24 | 2007-03-22 | ピルキングトン・ノースアメリカ・インコーポレイテッド | Press bending station for sheet glass bending |
JP2006245315A (en) * | 2005-03-03 | 2006-09-14 | Matsushita Electric Ind Co Ltd | Manufacturing method of lid with window glass |
JP4714485B2 (en) * | 2005-03-03 | 2011-06-29 | パナソニック株式会社 | Method for manufacturing window glass lid |
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