JP2814717B2 - Optical element molding method - Google Patents
Optical element molding methodInfo
- Publication number
- JP2814717B2 JP2814717B2 JP2225813A JP22581390A JP2814717B2 JP 2814717 B2 JP2814717 B2 JP 2814717B2 JP 2225813 A JP2225813 A JP 2225813A JP 22581390 A JP22581390 A JP 22581390A JP 2814717 B2 JP2814717 B2 JP 2814717B2
- Authority
- JP
- Japan
- Prior art keywords
- molding
- mold
- molding material
- optical element
- pressure
- 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.)
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Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は光学素子の成形方法と光学素子の成形に用い
て有用な光学素子の成形用材料に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding an optical element and a molding material for an optical element useful for molding an optical element.
従来の技術 従来の光学素子のプレス成形方法を、第５図、第６図
を用いて説明する。2. Description of the Related Art A conventional press forming method for an optical element will be described with reference to FIGS.
ガラス材料のプレス成形によって光学素子を製造する
場合、先ずガラス棒材を所定の幅（長さ）に切断して円
柱状の成形用材料を得る。次に、これをガラス転移点付
近の温度まで予備加熱する。その後この加熱昇温された
成形用材料を、型閉めしたとき光学素子の完成品とほぼ
同一形状となるように加工された上型と下型の上下型の
間に供給し、所定の温度と圧力で加圧成形するという方
法が一般的である。When manufacturing an optical element by press-molding a glass material, first, a glass rod is cut into a predetermined width (length) to obtain a cylindrical molding material. Next, it is preheated to a temperature near the glass transition point. Thereafter, the heated and heated molding material is supplied between the upper and lower molds of the upper mold and the lower mold which are processed so as to have substantially the same shape as the completed optical element when the mold is closed. A method of pressure molding with pressure is generally used.
成形用材料の形状は、できる限り簡単な形状が製造工
程あるいは素材の加工の面でも望ましい。例えば特開昭
60−246231号公報では、ガラス棒材を所定の幅（長さ）
で切断し、その両端面を鏡面に加工した第５図に示す円
柱体の成形用材料が示されている。The shape of the molding material is desirably as simple as possible in terms of the manufacturing process or the processing of the material. For example,
In Japanese Patent Application Laid-Open No. 60-246231, a glass rod is set to a predetermined width (length).
FIG. 5 shows a cylindrical molding material obtained by cutting at both ends and processing both end surfaces into mirror surfaces.
又、自動化に対応するための光学素子の製造装置が特
開昭63−64929号公報に示されている。Japanese Patent Application Laid-Open No. 63-64929 discloses an apparatus for manufacturing an optical element to cope with automation.
第６図にその光学素子の製造装置82に示す。成形材料
は、搬送装置ライン89の中において金型に挿入される。
そして金型取入れ装置84を通って加熱装置85に搬送され
予備加熱される。この予備加熱で軟化した成形用材料の
入った金型をプレス装置86でプレスし、金型面を成形用
材料に転写させる。その後、保圧ステージ87で冷却し、
金型取り出し装置88に搬送し搬送装置89に戻す。成形さ
れた光学素子は、搬送装置ライン中で取り出されるとと
もに金型の洗浄が行なわれる。その後、再び成形用材料
を金型内に挿入し、光学素子の製造装置内に搬送して上
記の工程を繰り返す。FIG. 6 shows the optical device manufacturing apparatus 82. The molding material is inserted into a mold in the conveyor line 89.
Then, it is conveyed to the heating device 85 through the mold take-in device 84 and is preheated. The mold containing the molding material softened by the preliminary heating is pressed by the press device 86 to transfer the mold surface to the molding material. After that, it is cooled by the pressure holding stage 87,
It is transported to the mold removal device 88 and returned to the transport device 89. The molded optical element is taken out in the conveyor line and the mold is cleaned. Thereafter, the molding material is inserted into the mold again, transported into the optical element manufacturing apparatus, and the above steps are repeated.
発明が解決しようとする課題 上記従来例の成形方法のように、ガラス棒材を所定の
幅で切断した成形用材料では、切断時にエッジ部分が欠
けたりあるいはクラックが入ったりする場合がある。こ
の様な成形用材料を成形用金型にセットする際には、エ
ッジ部分のクラックの入った部分において欠けが発生す
る恐れがある。PROBLEM TO BE SOLVED BY THE INVENTION As in the molding method of the above-described conventional example, in a molding material obtained by cutting a glass bar at a predetermined width, an edge portion may be chipped or cracked at the time of cutting. When such a molding material is set in a molding die, chipping may occur at a cracked portion of an edge portion.
又、たとえクラックが発生していなくとも、従来例の
搬送ライン上を成形用材料の挿入された金型を搬送させ
る場合、搬送中の揺れ、衝撃等で角のたったエッジ部分
が欠ける恐れがある。欠けた材料は型転写面の中心部に
集まるか、あるいは成形用材料の輪郭に沿って金型に付
着した状態となる。Further, even if cracks do not occur, when a mold in which a molding material is inserted is transported on a transport line in the conventional example, there is a possibility that a sloping edge portion may be chipped due to shaking or impact during transport. . The chipped material gathers at the center of the mold transfer surface or adheres to the mold along the contour of the molding material.
この様な状態で成形を行なえば、得られる光学素子の
光学有効面に欠けた材料が凸部となって残る。あるいは
型転写面に欠けた材料が強固に付着し、成形した光学素
子の光学有効面に凹部ができたりする。この様に従来の
成形方法では、製造歩留まりが低下すると共に、金型に
損傷を与えると言う重大な問題を有していた。If the molding is performed in such a state, the material lacking in the optically effective surface of the obtained optical element remains as a projection. Alternatively, the material lacking on the mold transfer surface adheres firmly, and a concave portion is formed on the optically effective surface of the molded optical element. As described above, the conventional molding method has a serious problem that the production yield is reduced and the mold is damaged.
課題を解決するための手段 上記課題を解決するために本発明の光学素子の成形方
法は、成形用材料を成形型の上型と下型との間の前記上
型及び前記下型の型転写面の内側に配置した後、前記成
形用材料を加熱軟化させ、前記成形用材料の少なくとも
一部が前記上型及び前記下型と常に接触した状態でプレ
ス成形するに際して、成形途中にプレス成形圧力を零ま
たは減圧する工程を少なくとも一度行なった後、前記プ
レス成形圧力を戻す工程を含むプレス成形する方法にあ
って、前記成形用材料は円柱形状で両端面の少なくとも
どちらか一方のエッジ部分が面取りまたは球面状の何れ
かの加工処理を施され、前記型成形面と前記成形用材料
の前記エッジ部とが面状に当接しながら成形することを
特徴とするものである。Means for Solving the Problems In order to solve the above problems, a method of molding an optical element according to the present invention comprises transferring a molding material between the upper mold and the lower mold of the molding mold by transferring the upper mold and the lower mold. After being placed inside the surface, the molding material is heated and softened, and when at least a part of the molding material is press-molded in a state of being constantly in contact with the upper mold and the lower mold, a press molding pressure is applied during molding. Zero or reducing the pressure at least once and then returning the press molding pressure, wherein the molding material is cylindrical and at least one edge of both end surfaces is chamfered. Alternatively, any one of spherical processing is performed, and the molding is performed while the molding surface and the edge portion of the molding material are in contact with each other.
また、成形用材料の端面は鏡面に加工されているか、
あるいは円柱形状の端面が割断面であることが望まし
い。Also, the end surface of the molding material is mirror-finished,
Alternatively, it is desirable that the end face of the columnar shape has a split cross section.
作 用 上記の構成によれば、棒材から成形用材料を切断する
ときにエッジ部に発生したクラックは、エッジ部の面と
り加工において、確実に除去される。その結果、成形用
材料を成形用金型にセットする際や、自動化のために成
形用材料の挿入された金型を搬送ライン上で搬送させる
場合においても、エッジ部分から欠ける恐れがなく性能
の良い光学素子を得ることができ、また金型を損傷する
ことも防止される。Operation According to the above configuration, cracks generated in the edge portion when cutting the molding material from the bar are reliably removed in the chamfering of the edge portion. As a result, even when the molding material is set in the molding die, or when the mold in which the molding material is inserted is transported on a transport line for automation, there is no risk of chipping from the edge portion and the performance is improved. A good optical element can be obtained, and damage to the mold can be prevented.
実施例 以下、本発明の実施例について図面を参照しながら説
明する。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図は、本発明の光学素子の成形方法の一実施例を
示す工程図である。FIG. 1 is a process chart showing one embodiment of the method for molding an optical element of the present invention.
まず組立ステージ10にて金型に成形用材料５を供給す
る。この成形用材料５は第４図に示すような直径8mmの
円柱体であり、これは光学ガラスSF−８（ガラス転移点
は420℃、線膨張率は100℃〜300℃の範囲内では90×10
-7/℃である）の棒材を所定の幅に切断した後、エッジ
を含めて両端面を研磨し、直径8mm×長さ10mmに仕上げ
ものである。図示の通りエッジ部は両端面とも球面状に
面とり加工を施してあり鏡面である。First, the molding material 5 is supplied to the mold at the assembly stage 10. The molding material 5 is a cylindrical body having a diameter of 8 mm as shown in FIG. 4 and is made of an optical glass SF-8 (glass transition point is 420 ° C., linear expansion coefficient is 90 ° C. in the range of 100 ° C. to 300 ° C.). × 10
-7 / ° C.) is cut into a predetermined width, and both end faces including the edge are polished to finish 8 mm in diameter × 10 mm in length. As shown in the figure, the edge portion is mirror-finished by chamfering both end surfaces into a spherical shape.
この成形用材料５は、その側面を図示しないロボット
アームの先端に取り付けた成形材料保持部で保持され下
型２の型転写面に金型中心に対して偏芯のないように供
給される。このとき金型中心からずれた状態で供給され
ると、ずれたままで成形が行なわれ光学素子の特性が低
下する場合があるので、正確に金型中心にセットする必
要がある。The molding material 5 is held by a molding material holding section attached to the end of a robot arm (not shown), and is supplied to the mold transfer surface of the lower mold 2 without eccentricity with respect to the center of the mold. At this time, if the material is supplied in a state shifted from the center of the mold, molding may be performed while the position is shifted, and the characteristics of the optical element may be degraded.
次に、上型１を胴型３に挿入する。挿入方法は成形用
素材の供給方法と同様に、ロボットアームの先端に取り
付けた上型保持部でつかんで胴型３に挿入する。成形用
材料５を金型内にセットした時の断面を第２図に示す。
型転写面1a、2aと成形用材料５は、図示の通り丸みを有
するエッジ部5aで面接触している。Next, the upper mold 1 is inserted into the body mold 3. The insertion method is similar to the method of supplying the molding material, and is gripped by the upper die holding portion attached to the tip of the robot arm and inserted into the trunk die 3. FIG. 2 shows a cross section when the molding material 5 is set in a mold.
The mold transfer surfaces 1a and 2a are in surface contact with the molding material 5 at a rounded edge portion 5a as shown in the figure.
続いて搬送ライン17を通って供給ステージ11に搬送さ
れる。更に550℃に昇温された加熱ステージ12に搬送
し、550℃に加熱されたヒートブロック６とで上下から
成形用材料５を予備加熱する。この時ヒートブロック６
と上型１とはわずかに離れている。また成形用材料５は
粘度は変形可能な約1010ポアズとなっている。Subsequently, it is transferred to the supply stage 11 through the transfer line 17. Further, the molding material 5 is conveyed to the heating stage 12 heated to 550 ° C., and is preheated from above and below by the heat block 6 heated to 550 ° C. At this time heat block 6
And the upper mold 1 are slightly separated. The viscosity of the molding material 5 is about 10 10 poise that can be deformed.
次に成形ステージ13に搬送される。成形ステージに金
型が搬送された時の状態を第３図に断面図で示す。上型
１と下型２の軸ずれをなくし、かつ所定の光学素子の厚
みになるように任意の高さに調整した胴型３と前記上
型、下型及び胴型３で囲まれる空間に成形用材料５が供
給されている。Next, it is transported to the molding stage 13. FIG. 3 is a cross-sectional view showing a state where the mold is conveyed to the molding stage. The body mold 3 adjusted to an arbitrary height so as to eliminate the axial deviation between the upper mold 1 and the lower mold 2 and have a predetermined thickness of the optical element, and a space surrounded by the upper mold, the lower mold, and the mold 3. A molding material 5 is supplied.
加圧ブロック４は、成形途中の圧力を任意に減圧でき
零にもできるようになっている。圧力供給源は図示して
いないが油圧ポンプ等で圧力を伝えている。成形ステー
ジに金型が搬送された後、加圧ブロック４が下降し上型
ツバ部1cと密着する。次に加圧ステージに圧力が供給さ
れ上型１が成形用材料５を押圧し始める。この時の圧力
は2Kg/mm2以上が良い。The pressure block 4 can arbitrarily reduce the pressure during molding and can reduce it to zero. Although not shown, the pressure supply source transmits pressure by a hydraulic pump or the like. After the mold is conveyed to the molding stage, the pressure block 4 descends and comes into close contact with the upper die flange 1c. Next, pressure is supplied to the pressing stage, and the upper mold 1 starts pressing the molding material 5. The pressure at this time is preferably 2 kg / mm 2 or more.
上型と下型と胴型で囲まれる空間に成形用材料５が供
給されてできた上型１と胴型３の間の隙間が、成形ステ
ージでの加圧で完全になくなり密着するまでのストロー
ク長を全加熱加圧ストロークと言う。成形ステージでの
加圧工程において、所定の時間経過後に加圧ブロック４
を上昇させて上型ツバ部1Cから離し、成形圧力を一旦零
にする。圧力を零にする直前、正圧になっていた型転写
面1a,2aと成形用材料端面で囲まれる空間1b,2bは常圧に
戻る。The gap between the upper mold 1 and the body mold 3 formed by supplying the molding material 5 into the space surrounded by the upper mold, the lower mold, and the body mold until the gap between the upper mold 1 and the body mold 3 is completely eliminated by pressurization at the molding stage and adheres to each other. The stroke length is called the total heating and pressing stroke. In the pressing step in the molding stage, the pressing block 4
Is raised and separated from the upper die flange 1C, and the molding pressure is temporarily reduced to zero. Immediately before the pressure is reduced to zero, the spaces 1b and 2b surrounded by the mold transfer surfaces 1a and 2a and the molding material end surfaces, which have been positive, return to normal pressure.
次に再び加圧ブロック４を下降し、上型１のツバ部1C
と加圧ブロック４を密着させる。成形圧力を零にした時
にも、金型１の転写面1a及び金型２の転写面2aは、成形
用材料５と密着したままである。この時、転写面1a,2a
と成形用材料端面で囲まれる空間1b、2bは、成形ステー
ジで成形工程を開始した直後の空間1b,2bよりも、かな
り小さい容積となっている。Next, the pressure block 4 is lowered again, and the collar 1C of the upper die 1 is moved.
And the pressure block 4 are brought into close contact with each other. Even when the molding pressure is reduced to zero, the transfer surface 1a of the mold 1 and the transfer surface 2a of the mold 2 remain in close contact with the molding material 5. At this time, the transfer surfaces 1a, 2a
And the spaces 1b and 2b surrounded by the molding material end faces have a considerably smaller volume than the spaces 1b and 2b immediately after the molding step is started in the molding stage.
次に油圧ポンプにより再び加圧ブロックに圧力が供給
され、上型１が成形用材料５を押圧し始める。全加熱加
圧ストロークを押圧したところで成形工程を終了する。Next, pressure is again supplied to the pressurizing block by the hydraulic pump, and the upper mold 1 starts pressing the molding material 5. When the entire heating / pressing stroke is pressed, the molding process ends.
次に400℃に設定された保圧ステージに搬送し、400℃
に設定された保圧ブロック７とで挟み込んで保持する。
40秒経過後保圧ブロックを解放して取り出しステージ15
に搬送する。更に搬送ライン17上を通って分解ステージ
16で、上型１を組立ステージで使用したものと同じ機構
を持ったロボットアームの先端に取り付けた上型保持部
でつかんではずした後、同様に光学素子の側面を、ロボ
ットアームの先端に取り付けた光学素子保持部でつかん
で取り出す。Next, it is transported to a pressure-holding stage set at 400 ° C,
And is held between the pressure-holding blocks 7 which are set to be.
After 40 seconds, release the packing block and take out stage 15
Transport to Further, the disassembly stage passes over the transport line 17
At 16, the upper mold 1 is grasped and removed by the upper mold holding part attached to the tip of the robot arm having the same mechanism as that used in the assembly stage, and the side of the optical element is similarly attached to the tip of the robot arm. Grab it with the attached optical element holder and take it out.
次に再び組立ステージ10で成形用材料５、上型の順に
セットした後供給ステージに搬送する。Next, the molding material 5 and the upper mold are set again in the assembly stage 10 in this order, and then transported to the supply stage.
以上が光学素子の製造装置で成形する場合の製造工程
である。図示していないが、加熱ステージから保圧ステ
ージまでの工程は、還元性の雰囲気たとえばN2雰囲気に
調整されている。The above is the manufacturing process in the case of molding with an optical element manufacturing apparatus. Although not shown, the steps from the heating stage to the pressure-holding stage are adjusted to a reducing atmosphere, for example, an N 2 atmosphere.
本実施例では、成形用材料を棒材から切断加工して得
た時に発生するエッジ部のクラックや欠けは、エッジ部
の球面加工によって確実に除去されている。In the present embodiment, cracks and chips at the edges generated when the molding material is cut from the bar are reliably removed by the spherical processing of the edges.
従って、組立ステージで成形用材料５と金型を組立
後、搬送ライン上を搬送する場合に、横揺れや上下の振
動、衝撃があった際にも成形用材料５は欠けることがな
く、又、型転写面と面接触しているため、セット位置か
ら位置ずれしない。Therefore, when assembling the molding material 5 and the mold at the assembly stage and then transporting the molding material 5 on a transport line, the molding material 5 is not chipped even when there is a roll, a vertical vibration, or an impact. Since it is in surface contact with the mold transfer surface, it does not deviate from the set position.
また、成形用材料５は、型転写面1a、2aとは面接触す
るのでプレス時においてもエッジ部が欠けることがな
い。従って、光学有効面に欠けた材料が凸部となって残
ったり、あるいは型転写面に欠けた材料が強固に付着
し、成形した光学素子の光学有効面に凹部ができたりあ
るいは金型に傷を付けるという従来の問題も解決され、
良好な光学素子を歩留まりよく製造できる。Further, since the molding material 5 comes into surface contact with the mold transfer surfaces 1a and 2a, the edge portion is not chipped even during pressing. Therefore, the material lacking on the optically effective surface remains as a convex portion, or the material lacking on the mold transfer surface adheres firmly, and a concave portion is formed on the optically effective surface of the molded optical element, or the mold is damaged. The traditional problem of attaching
Good optical elements can be manufactured with good yield.
さらに、本実施例では、光学素子の形状に近似した形
状に研磨した成形用材料を用いるのに比べて工程数が少
ないためコストメリットが大きい。Furthermore, in this embodiment, the number of steps is smaller than in the case of using a molding material polished to a shape similar to the shape of the optical element, so that the cost merit is great.
又、成形用材料のエッジ部が未加工である場合に比べ
て、本成形用材料は型転写面と面接触するため昇温、降
温時間の短縮につながる。Further, as compared with the case where the edge portion of the molding material is unprocessed, the present molding material comes into surface contact with the mold transfer surface, which leads to a reduction in time for raising and lowering the temperature.
さらに成形時の成形用材料内部の温度分布の均一性に
おいても有利となり、形状精度に優れた光学素子を提供
できる。従って、安価で高性能な光学素子を大量に提供
できる。Further, the uniformity of the temperature distribution inside the molding material at the time of molding is advantageous, and an optical element having excellent shape accuracy can be provided. Therefore, a large number of inexpensive and high-performance optical elements can be provided.
なお、本実施例では、成形用材料の両端面のエッジ部
分に球面加工を施したものを使用したが、面取り面でも
良く、同様の効果が得られる。In the present embodiment, a material obtained by performing spherical processing on the edge portions of both end surfaces of the molding material is used, but a chamfered surface may be used, and the same effect can be obtained.
又、成形用材料の両端面は研磨により仕上げたものを
使用したが、例えば棒材を側圧切断することによって得
られる割断面をそのまま利用すれば、端面研磨の工程を
省略できる。Although both ends of the molding material are finished by polishing, the step of polishing the end surface can be omitted by using, for example, a cut section obtained by cutting the bar material by side pressure.
本実施例では、両端面のエッジ部分に球面加工を施し
たが、光学素子の形状によってどちらか一方の端面のみ
の加工でも同様の効果が得られる。In this embodiment, spherical processing is performed on the edges of both end faces. However, similar effects can be obtained by processing only one of the end faces depending on the shape of the optical element.
発明の効果 以上、詳細に説明した様に、本発明は、従来の課題を
解決でき、特性の良好な光学素子を歩留まりよく安価に
製造できるもので、その工業的価値は大である。Effect of the Invention As described in detail above, the present invention can solve the conventional problems and can produce an optical element having good characteristics at a good yield at a low cost, and its industrial value is great.
第１図は本発明の光学素子の成形方法の一実施例の工程
図、第２図は同実施例で成形用材料を金型内に挿入した
時の状態を示す断面図、第３図は同実施例における成形
金型の断面図、第４図（ａ），（ｂ）は本発明の成形用
材料の一実施例を示す正面図と側面図、第５図は従来の
成形用材料の側面図、第６図は従来の光学素子の製造装
置の平面図である。 １……上型、1a……型転写面、1b……空間、1C……上型
ツバ部、2C……下型ツバ部、２……下型、2a……型転写
面、2b……空間、３……胴型、４……加圧ブロック、５
……成形用材料、６……ヒートブロック、７……保圧ブ
ロック、10……組立ステージ、11……供給ステージ、12
……加熱ステージ、13……成形ステージ、14……保圧ス
テージ、15……取り出しステージ、16……分解ステー
ジ、17……搬送ライン。FIG. 1 is a process chart of an embodiment of a method for molding an optical element of the present invention, FIG. 2 is a sectional view showing a state when a molding material is inserted into a mold in the embodiment, and FIG. 4 (a) and 4 (b) are front and side views showing one embodiment of the molding material of the present invention, and FIG. 5 is a sectional view of a conventional molding material. FIG. 6 is a plan view of a conventional optical element manufacturing apparatus. 1 upper mold, 1a mold transfer surface, 1b space, 1C upper mold collar, 2C lower mold collar, 2 lower mold, 2a mold transfer surface, 2b Space, 3 ... trunk type, 4 ... pressure block, 5
…… Molding material, 6… Heat block, 7… Holding block, 10… Assembly stage, 11… Supply stage, 12
…… Heating stage, 13 …… Molding stage, 14 …… Packing stage, 15 …… Removal stage, 16 …… Disassembly stage, 17 …… Transfer line.
フロントページの続き (56)参考文献 特開 平２−120243（ＪＰ，Ａ) 特開 平２−102133（ＪＰ，Ａ) 特開 平２−39001（ＪＰ，Ａ) 特開 昭64−79023（ＪＰ，Ａ) 特開 昭62−3029（ＪＰ，Ａ) 特開 平２−208228（ＪＰ，Ａ) 特公 昭63−37043（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) C03B 11/00Continuation of front page (56) References JP-A-2-120243 (JP, A) JP-A-2-102133 (JP, A) JP-A-2-39001 (JP, A) JP-A-64-79023 (JP) JP-A-62-3029 (JP, A) JP-A-2-208228 (JP, A) JP-B-63-37043 (JP, B2) (58) Fields investigated (Int. Cl. 6 , DB Name) C03B 11/00
Claims (3)
前記上型及び前記下型の型転写面の内側に配置した後、
前記成形用材料を加熱軟化させ、前記成形用材料の少な
くとも一部が前記上型及び前記下型と常に接触した状態
でプレス成形するに際して、成形途中にプレス成形圧力
を零または減圧する工程を少なくとも一度行なった後、
前記プレス成形圧力を戻す工程を含むプレス成形する方
法であって、前記成形用材料は円柱形状で両端面の少な
くともどちらか一方のエッジ部分が面取りまたは球面状
の何れかの加工処理を施され、前記型成形面と前記成形
用材料の前記エッジ部とが面状に当接しながら成形する
ことを特徴とする光学素子の成形方法。After disposing a molding material inside a mold transfer surface of the upper mold and the lower mold between an upper mold and a lower mold of a molding die,
Heat-softening the molding material, and press-molding in a state where at least a part of the molding material is always in contact with the upper mold and the lower mold, at least a step of reducing or reducing the press molding pressure during molding. Once done,
A method of press forming including a step of returning the press forming pressure, wherein the forming material is subjected to any one of chamfering or spherical processing at least one edge portion of both end surfaces in a cylindrical shape, A molding method for an optical element, wherein the molding is performed while the molding surface and the edge portion of the molding material are in planar contact with each other.
加工されていることを特徴とする請求項（１）記載の光
学素子の成形方法。2. The method for molding an optical element according to claim 1, wherein both end faces and edge portions of the molding material are mirror-finished.
徴とする請求項（１）記載の光学素子の成形方法。3. The method for molding an optical element according to claim 1, wherein the end surface of the molding material is a fractured surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2225813A JP2814717B2 (en) | 1990-08-27 | 1990-08-27 | Optical element molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2225813A JP2814717B2 (en) | 1990-08-27 | 1990-08-27 | Optical element molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04108620A JPH04108620A (en) | 1992-04-09 |
| JP2814717B2 true JP2814717B2 (en) | 1998-10-27 |
Family
ID=16835199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2225813A Expired - Fee Related JP2814717B2 (en) | 1990-08-27 | 1990-08-27 | Optical element molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2814717B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001163628A (en) | 1999-10-01 | 2001-06-19 | Hoya Corp | Producing method of molding |
| JP2009139395A (en) * | 2007-12-03 | 2009-06-25 | Mitsubishi Electric Corp | Wavelength conversion laser beam source |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS623029A (en) * | 1985-06-28 | 1987-01-09 | Olympus Optical Co Ltd | Method for forming lens |
| JP2615886B2 (en) * | 1988-07-28 | 1997-06-04 | 松下電器産業株式会社 | Glass material for optical component, method for manufacturing optical component, and optical component |
| JPH02120243A (en) * | 1988-10-27 | 1990-05-08 | Olympus Optical Co Ltd | Method for forming glass optical elements |
-
1990
- 1990-08-27 JP JP2225813A patent/JP2814717B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04108620A (en) | 1992-04-09 |
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