JP3184677B2 - Method for manufacturing composite optical element - Google Patents
Method for manufacturing composite optical elementInfo
- Publication number
- JP3184677B2 JP3184677B2 JP24375493A JP24375493A JP3184677B2 JP 3184677 B2 JP3184677 B2 JP 3184677B2 JP 24375493 A JP24375493 A JP 24375493A JP 24375493 A JP24375493 A JP 24375493A JP 3184677 B2 JP3184677 B2 JP 3184677B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- resin layer
- optical element
- manufacturing
- effective diameter
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複合型光学素子の製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a composite optical element.
【０００２】[0002]
【従来の技術】従来から複合型光学素子の製造に関して
種々の方法が知られている。例えば、特開平４−１４４
７１８号公報には、金型の光学面（樹脂層と接触する
面）の有効径の外側で独立して上下動自在な内型と外型
に分割した金型を用いる方法が提案されている。2. Description of the Related Art Conventionally, various methods have been known for producing composite optical elements. For example, Japanese Patent Application Laid-Open No. 4-144
No. 718 proposes a method of using a mold divided into an inner mold and an outer mold that can move up and down independently outside the effective diameter of the optical surface of the mold (the surface in contact with the resin layer). .
【０００３】[0003]
【発明が解決しようとする課題】しかし、特開平４−１
４４７１８号公報記載の従来の方法では、外型の光学面
と中心軸のなす角度によっては樹脂層の表面（金型と接
触する面）の最外周部の形状がかなり鋭角となる。その
ため、樹脂層の表面の最外周部付近が脆くなり、金型と
樹脂層を剥離する時に樹脂層の表面の最外周部付近が破
損したり、外周部付近とともに光学有効径内の樹脂層が
破損するという問題点があった。ここで、光学有効径外
の樹脂層だけが破損した場合は光学素子としての性能上
は問題ないが、目視で樹脂層の外周部を確認できるの
で、製品として使用することはできなかった。SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open No.
In the conventional method described in Japanese Patent No. 44718, the shape of the outermost peripheral portion of the surface of the resin layer (the surface in contact with the mold) becomes quite acute depending on the angle between the optical surface of the outer mold and the central axis. Therefore, the vicinity of the outermost peripheral portion of the surface of the resin layer becomes brittle, the vicinity of the outermost peripheral portion of the surface of the resin layer is damaged when the mold and the resin layer are separated, and the resin layer within the optical effective diameter together with the vicinity of the outer peripheral portion is damaged. There was a problem of being damaged. Here, when only the resin layer outside the effective optical diameter is damaged, there is no problem in the performance as an optical element, but the outer peripheral portion of the resin layer can be visually confirmed, so that it could not be used as a product.
【０００４】本発明は、かかる従来の問題点に鑑みてな
されたもので、金型と樹脂層を剥離する時に樹脂層表面
の最外周部付近を破損することなく、良好な複合型光学
素子を製造することができる複合型光学素子の製造方法
を提供することを目的とする。The present invention has been made in view of such conventional problems, and provides a good composite optical element without damaging the outermost peripheral portion of the resin layer surface when the resin layer is separated from the mold. An object of the present invention is to provide a method for manufacturing a composite optical element that can be manufactured.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、光学素子の基材上の少なくとも１つの表
面にエネルギー硬化型の樹脂を載置し、光学素子成形用
金型により押圧して所望の樹脂層を形成し、エネルギー
の照射により樹脂層を硬化させ、硬化させた樹脂層を前
記金型から剥離する複合型光学素子の製造方法におい
て、前記金型の光学面の有効径の外側に中心軸と１５度
以上４５度以下の角度をなし、かつ中心軸から離れるに
つれて基材の成形面の光学有効径内の最外周部の点を通
り中心軸に垂直な面との距離が大きくなる形状を有する
金型を用いることとした。In order to solve the above-mentioned problems, the present invention provides a method for forming an optical element by placing an energy-curable resin on at least one surface of a substrate of an optical element. Forming a desired resin layer by pressing, curing the resin layer by irradiation of energy, and peeling the cured resin layer from the mold; At an angle of 15 ° or more and 45 ° or less with respect to the central axis on the outside of the diameter, and with the plane perpendicular to the central axis passing through the outermost point within the optically effective diameter of the molding surface of the base material as the distance from the central axis increases. A mold having a shape that increases the distance is used.
【０００６】また、本発明は、光学素子の基材上の少な
くとも１つの表面にエネルギー硬化型の樹脂を載置し、
光学素子成形用金型により押圧して所望の樹脂層を形成
し、エネルギーの照射により樹脂層を硬化させ、硬化さ
せた樹脂層を前記金型から剥離する複合型光学素子の製
造方法において、前記金型の光学面の有効径の外側に金
型の材質よりも樹脂に対する濡れ性が悪い物質による膜
を設け、前記金型の光学面の有効径の外側が中心軸と１
５度以上５５度以下の角度をなし、かつ中心軸から離れ
るにつれて基材の成形面の光学有効径内の最外周部の点
を通り中心軸に垂直な面との距離が大きくなる形状を有
する金型を用いることとした。The present invention also provides an energy-curable resin on at least one surface of a substrate of an optical element,
Forming a desired resin layer by pressing with a mold for forming an optical element, curing the resin layer by irradiation of energy, and peeling the cured resin layer from the mold; Outside the effective diameter of the optical surface of the mold, a film made of a substance having a lower wettability to resin than the material of the mold is provided.
It has an angle of 5 ° or more and 55 ° or less, and has a shape in which as the distance from the central axis increases, the distance from a surface passing through the outermost peripheral point within the optically effective diameter of the molding surface of the substrate and perpendicular to the central axis increases. A mold was used.
【０００７】[0007]
【作用】まず、図１に基づいて金型の光学有効径外周部
の中心軸となす角度θが１０度の場合を説明する。金型
１を押圧することにより、基材２の中心部に載置した樹
脂を広げて形成した場合、液体の特性から樹脂層３の側
面の形状は、図１に示すように、樹脂層３と金型１が接
触する部分や樹脂層３と基材２が接触する部分に比べ
て、樹脂層３の中間部は中心軸側にくぼんでいる。この
時の金型１と樹脂層３が接触する最外周部における接触
角をθ1 とすると、このθ1 は１０度より小さくなるの
で金型１と硬化した樹脂層３を剥離する時に樹脂層３の
最外周部が破損しやすい。つまり、剥離時の樹脂層３の
最外周部の破損を防止するためには、θを１０度より大
きくしなければならない。そこで、検討を重ねた結果、
θが１５度以上であれば、樹脂層３の最外周部を破損す
ることなく、金型１と硬化した樹脂層３を剥離すること
ができることが判明した。First, the case where the angle .theta. Formed with the center axis of the outer periphery of the optical effective diameter of the mold is 10 degrees will be described with reference to FIG. When the resin placed in the center of the base material 2 is spread by pressing the mold 1, the shape of the side surface of the resin layer 3 is changed from the characteristics of the liquid to the resin layer 3 as shown in FIG. The intermediate portion of the resin layer 3 is recessed toward the center axis as compared with a portion where the resin layer 3 comes into contact with the mold 1 or a portion where the resin layer 3 comes into contact with the substrate 2. Assuming that the contact angle at the outermost peripheral portion where the mold 1 and the resin layer 3 come into contact with each other is θ 1 , this θ 1 is smaller than 10 degrees, so that when the mold 1 and the cured resin layer 3 are peeled off, The outermost part of No. 3 is easily damaged. That is, in order to prevent the outermost peripheral portion of the resin layer 3 from being damaged at the time of peeling, θ must be larger than 10 degrees. Therefore, as a result of repeated examination,
If θ is 15 degrees or more, it has been found that the mold 1 and the cured resin layer 3 can be separated without damaging the outermost peripheral portion of the resin layer 3.
【０００８】次に、図２に基づいて金型の光学有効径外
周部の中心軸となす角度θが５０度の場合を説明する。
ここで、樹脂層３の形成方法は図１の場合と同様とす
る。したがって、樹脂層３の側面の形状も図１の場合と
同様で、樹脂層３と金型１が接触する部分や樹脂層３と
基材２が接触する部分に比べて、樹脂層３の中間部は中
心軸側にくぼんでいる。この時、金型１と樹脂層３が接
する最外周部における接触角をθ２とすると、θが１５
度よりも増加していくにつれて接触角が大きくなってい
くことになるので、θが５０度より小さい場合であって
もそれまでは、θ２は大きくなるはずである。しかし、
実際は金型１の光学有効径外周部に沿って樹脂が広がる
時の抵抗が小さくなる。よって、樹脂層３の金型１と接
触する部分の最外周部と樹脂層３の中間部との差は、θ
が１５度よりも増加していきそして５０度より小さい場
合まで（すなわち、５０度に近づいていくにつれて）大
きくなる。したがって、金型１と樹脂層３が接する最外
周部の形状は、θが５０度に近づいていくにつれて鋭く
なりθ２も小さくなるので、金型１と硬化した樹脂層３
を剥離する時に樹脂層３の最外周部を破損しやすい。つ
まり、剥離時の樹脂層３の最外周部の破損を防止するた
めにはθを５０度より小さくしなければならない。そこ
で、検討を重ねた結果、θが４５度以下ならば樹脂層３
の最外周部を破損することなく、金型１と硬化した樹脂
層３を剥離することができることが判明した。Next, a case where the angle θ between the center of the outer periphery of the optical effective diameter of the mold and the center axis is 50 degrees will be described with reference to FIG.
Here, the method of forming the resin layer 3 is the same as in the case of FIG. Therefore, the shape of the side surface of the resin layer 3 is the same as that of FIG. 1, and the intermediate portion of the resin layer 3 is smaller than the portion where the resin layer 3 contacts the mold 1 or the portion where the resin layer 3 contacts the substrate 2. The part is concave toward the central axis. At this time, the contact angle at the outermost peripheral portion of the mold 1 and the resin layer 3 is in contact and theta 2, theta 15
It means that becomes larger contact angle as increases than degrees, until it even when theta is less than 50 degrees, theta 2 should become greater. But,
Actually, the resistance when the resin spreads along the outer circumference of the optical effective diameter of the mold 1 is reduced. Therefore, the difference between the outermost peripheral portion of the portion of the resin layer 3 that contacts the mold 1 and the intermediate portion of the resin layer 3 is θ
Increases from 15 degrees and increases until it is less than 50 degrees (ie, as it approaches 50 degrees). Therefore, the mold 1 and the shape of the outermost peripheral portion of the resin layer 3 is in contact, since theta is sharply becomes theta 2 also decreases as approaches to 50 degrees, the resin cured with the mold 1 layer 3
When the resin layer 3 is peeled off, the outermost peripheral portion of the resin layer 3 is easily damaged. That is, in order to prevent the outermost peripheral portion of the resin layer 3 from being damaged at the time of peeling, θ must be smaller than 50 degrees. Therefore, as a result of repeated studies, if θ is 45 degrees or less, the resin layer 3
It has been found that the mold 1 and the cured resin layer 3 can be separated without damaging the outermost peripheral portion of the mold.
【０００９】次に、図３に基づいて金型の光学有効径外
周部に、樹脂に対して金型よりも濡れ性の悪い物質を設
けた場合を説明する。ここで、樹脂層３の形成方法は図
２の場合と同様で、金型１の光学有効径外周部が中心軸
となす角度θも図２の場合と同様に５０度とする。この
時、金型１と樹脂層３が接触する最外周部における接触
角をθ3 とすると、金型１の光学有効径外周部は樹脂に
対して金型１の他の部分よりも濡れ性が悪いので、図２
の場合の接触角θ2 よりもこの場合の接触角θ3 の方が
大きくなる。そこで、前記濡れ性の悪い物質にテフロン
膜を用いて検討を重ねた結果、θが５５度以下ならば樹
脂層３の最外周部を破損することなく、金型１と硬化し
た樹脂層３を剥離することができることが判明した。Next, a case will be described with reference to FIG. 3 in which a substance having a lower wettability to the resin than the mold is provided on the outer periphery of the optical effective diameter of the mold. Here, the method of forming the resin layer 3 is the same as in the case of FIG. 2, and the angle θ between the optically effective outer peripheral portion of the mold 1 and the center axis is also set to 50 degrees as in the case of FIG. At this time, assuming that the contact angle at the outermost peripheral portion where the mold 1 and the resin layer 3 come into contact is θ 3 , the outer periphery of the optically effective diameter of the mold 1 is more wettable to the resin than other parts of the mold 1. Is bad, so Figure 2
Towards the contact angle theta 3 in this case is larger than the contact angle theta 2 in the case of. Therefore, as a result of repeated studies using a Teflon film as the substance having poor wettability, if θ is 55 degrees or less, the mold 1 and the cured resin layer 3 can be bonded without damaging the outermost peripheral portion of the resin layer 3. It has been found that it can be peeled off.
【００１０】以上の３つの結果をもとに検討を進めた結
果、図４に示すように、金型１の光学有効径外周部の中
心軸となす角度θが３０度の場合が、金型１と樹脂層３
が接する最外周部における接触角θ4 が最も大きくなる
ことが判明した。また、金型１の光学有効径外周部に樹
脂に対して金型１よりも濡れ性の悪い物質を設けた場合
には、図４のθが３５度の場合に、θ4 が最大となるこ
とが判明した。As a result of study based on the above three results, as shown in FIG. 4, the case where the angle .theta. 1 and resin layer 3
It has been found that the contact angle θ 4 at the outermost peripheral portion where is contacted is the largest. Further, when a substance having less wettability to the resin than the mold 1 is provided on the outer periphery of the optical effective diameter of the mold 1, θ 4 becomes maximum when θ in FIG. 4 is 35 degrees. It has been found.
【００１１】さらに、一般に複合型光学素子の製造は常
温下で行われるので、製造に用いるエネルギー硬化型樹
脂の金型と接触する位置での角度には大きな差がない。
したがって、樹脂の種類が変わってもθの許容範囲は変
わらない。Further, since the manufacture of the composite optical element is generally performed at room temperature, there is no great difference in the angle of the energy-curable resin used in the manufacture at the position where it contacts the mold.
Therefore, the allowable range of θ does not change even if the type of the resin changes.
【００１２】[0012]
【実施例１】まず、構成を説明する。図５に示すよう
に、金型１は上下動自在に保持され、金型１の光学面の
有効径の外側は中心軸と１５度の角度をなし、かつ中心
軸から離れるにつれて金型１のの有効径内の最外周部を
通り中心軸に垂直な面との距離が大きくなるような円錐
形状を有している。金型１の下方には、球面研磨され、
中心軸が金型１の中心軸と同一で、両面が凹面のガラス
製の基材２が配設されている。基材２は成形面（樹脂層
を載置する面）の曲率半径が２０ｍｍ、外径が２５ｍｍ
である。また、基材２の成形面の最外周部には中心軸に
対して垂直で半径方向の幅が１ｍｍの面２ａが基材２の
中心軸に対して軸対称形状になるように設けられてい
る。金型１と基材２の間には、ウレタンアクリレート系
紫外線硬化型樹脂による樹脂層３が介在しており、金型
１、基材２および樹脂層３は互いに密着している。ここ
で、樹脂層３の中心軸上の厚さは０．１ｍｍ、有効径２
０ｍｍである。また、基材２の面２ａの上方には、この
面に面接触可能な剥離用の部材４が設けられている。Embodiment 1 First, the configuration will be described. As shown in FIG. 5, the mold 1 is held so as to be able to move up and down. The outside of the effective diameter of the optical surface of the mold 1 forms an angle of 15 degrees with the central axis, and the distance of the mold 1 increases as the distance from the central axis increases. Has a conical shape such that the distance from a plane passing through the outermost peripheral portion within the effective diameter of the above and perpendicular to the central axis becomes large. Below the mold 1, spherical polishing is performed,
A base member 2 made of glass whose central axis is the same as the central axis of the mold 1 and whose both surfaces are concave is provided. The substrate 2 has a molding surface (surface on which the resin layer is mounted) with a radius of curvature of 20 mm and an outer diameter of 25 mm.
It is. A surface 2a perpendicular to the central axis and having a width of 1 mm in the radial direction is provided on the outermost peripheral portion of the molding surface of the substrate 2 so as to be axially symmetric with respect to the central axis of the substrate 2. I have. A resin layer 3 made of a urethane acrylate-based ultraviolet curable resin is interposed between the mold 1 and the base 2, and the mold 1, the base 2, and the resin layer 3 are in close contact with each other. Here, the thickness of the resin layer 3 on the central axis is 0.1 mm, and the effective diameter is 2 mm.
0 mm. Above the surface 2 a of the substrate 2, there is provided a peeling member 4 that can make surface contact with this surface.
【００１３】次に、本実施例の製造方法を説明する。図
６に示すように、基材２の上面に樹脂５を必要量吐出す
る。次に、図７に示すように、金型１を下降させて基材
２に近づけることにより、樹脂５を広げ、樹脂５が所望
の厚さの樹脂層３を形成する位置で金型１の下降を停止
する。この時、樹脂層３の表面の最外周部は金型１の有
効径外の部分に接触している。この状態で基材２の下方
より不図示の手段により紫外線を照射して樹脂層３を硬
化する。その結果、図８に示すように、金型１、基材２
および樹脂層３が一体となった密着体が形成される。次
に、図９に示すように、前記密着体を上昇させると、基
材２の外周部に設けた面２ａ上に剥離用の部材４が面接
触する。そして、図１０に示すように、容易かつ瞬時に
金型１より基材２と樹脂層３とが一体となった複合型光
学素子６が剥離される。Next, the manufacturing method of this embodiment will be described. As shown in FIG. 6, a required amount of resin 5 is discharged onto the upper surface of the base material 2. Next, as shown in FIG. 7, by lowering the mold 1 to approach the base material 2, the resin 5 is spread, and the resin 5 is formed at a position where the resin 5 forms the resin layer 3 having a desired thickness. Stop descending. At this time, the outermost peripheral portion of the surface of the resin layer 3 is in contact with a portion outside the effective diameter of the mold 1. In this state, the resin layer 3 is cured by irradiating ultraviolet rays from below the substrate 2 by means (not shown). As a result, as shown in FIG.
In addition, an adhesive body in which the resin layer 3 is integrated is formed. Next, as shown in FIG. 9, when the contact body is raised, the peeling member 4 comes into surface contact with the surface 2 a provided on the outer peripheral portion of the base material 2. Then, as shown in FIG. 10, the composite optical element 6 in which the base material 2 and the resin layer 3 are integrated from the mold 1 is easily and instantaneously peeled off.
【００１４】本実施例の製造方法によると、樹脂層３の
最外周部と金型１が接触する位置での接触角がある程度
大きいので、金型１と樹脂層３を剥離する時に樹脂層３
表面の最外周部を破損することなく、複合型光学素子６
を製造することができる。According to the manufacturing method of this embodiment, since the contact angle at the position where the outermost peripheral portion of the resin layer 3 contacts the mold 1 is large to some extent, when the mold 1 and the resin layer 3 are separated, the resin layer 3
Without damaging the outermost peripheral portion of the surface, the composite optical element 6
Can be manufactured.
【００１５】[0015]
【実施例２】まず、構成を説明する。図１１に示すよう
に、本実施例は、前記実施例１の金型１が光学有効径の
内側と外側で互いに独立して上下動可能な内型１ｂと外
型１ｃに分割されている点と、外型１ｃの光学面と中心
軸のなす角度が４５度である点と、基材２の両面が凸面
であり、成形面の曲率半径が１００ｍｍ、外径が３０ｍ
ｍである点と、基材２の側面に剥離用の部材４が接触可
能な幅が１．５ｍｍで深さが１ｍｍのＶ型溝２ｂが設け
られている点と、樹脂層３の中心軸上の厚さが０．２ｍ
ｍ、有効径が２６ｍｍである点と、Ｖ型溝２ｂに面接触
可能な形状をした剥離用の部材４が基材２の外側に設け
られている点と、剥離用の部材４が不図示の手段により
基材２の中心軸に対して進退可能な点が、実施例１と異
なる。また、本実施例は基材２の成形面が凸面となって
いるので、成形中に樹脂が基材２の外径からはみ出さな
いように、粘度が約２５００ｃｐｓの樹脂を選択してい
る。他の構成は実施例１と同じである。なお、本実施例
では粘度が２５００ｃｐｓの樹脂を使用しているが、樹
脂の種類によって金型１と樹脂の接触角は大きく変化し
ないので、基材２の成形面の曲率半径と外径が異なる場
合は、粘度が異なる樹脂を用いることにより、樹脂を押
圧する時に樹脂が基材からはみ出すことを防止できる。Embodiment 2 First, the configuration will be described. As shown in FIG. 11, the present embodiment is different from the first embodiment in that the mold 1 is divided into an inner mold 1b and an outer mold 1c which can move up and down independently on the inside and outside of the effective optical diameter. The angle between the optical surface of the outer mold 1c and the central axis is 45 degrees, both surfaces of the substrate 2 are convex, the radius of curvature of the molding surface is 100 mm, and the outer diameter is 30 m.
m, a V-shaped groove 2 b having a width of 1.5 mm and a depth of 1 mm at which the peeling member 4 can contact the side surface of the base material 2, and a central axis of the resin layer 3. The top thickness is 0.2m
m, the point that the effective diameter is 26 mm, the point that the peeling member 4 having a shape capable of making surface contact with the V-shaped groove 2b is provided outside the base material 2, and the peeling member 4 is not shown. This embodiment is different from the first embodiment in that it can advance and retreat with respect to the central axis of the base material 2 by the means described above. In this embodiment, since the molding surface of the substrate 2 is convex, a resin having a viscosity of about 2500 cps is selected so that the resin does not protrude from the outer diameter of the substrate 2 during molding. Other configurations are the same as those of the first embodiment. In this embodiment, a resin having a viscosity of 2500 cps is used. However, since the contact angle between the mold 1 and the resin does not largely change depending on the type of the resin, the radius of curvature and the outer diameter of the molding surface of the base material 2 are different. In this case, by using resins having different viscosities, the resin can be prevented from protruding from the base material when the resin is pressed.
【００１６】次に、本実施例の製造方法を説明する。本
実施例は金型１と樹脂層３を剥離する工程のみが実施例
１と異なるので、該工程のみを以下に説明する。まず、
図１２に示すように、金型１と樹脂層３を剥離する時
に、剥離用の部材４が中心軸に対して接近して基材２の
Ｖ型溝２ｂと面接触する。次に、図１３に示すように、
外型１ｃを上昇させることにより、外型１ｃと樹脂層３
の光学有効径の外側の部分を剥離する。次に、図１４に
示すように、内型１ｂを上昇させることにより、内型１
ｂと樹脂層３の光学有効径の内側の部分を剥離する。Next, the manufacturing method of this embodiment will be described. This embodiment is different from the first embodiment only in the step of peeling the mold 1 and the resin layer 3, so that only this step will be described below. First,
As shown in FIG. 12, when the mold 1 and the resin layer 3 are peeled off, the peeling member 4 approaches the central axis and makes surface contact with the V-shaped groove 2b of the substrate 2. Next, as shown in FIG.
By raising the outer mold 1c, the outer mold 1c and the resin layer 3 are raised.
The part outside the optical effective diameter of is peeled off. Next, as shown in FIG. 14, the inner mold 1 b is raised to raise the inner mold 1.
b and the portion inside the optically effective diameter of the resin layer 3 are peeled off.
【００１７】本実施例の製造方法によると、樹脂層３の
最外周部と金型１が接触する位置での接触角がある程度
大きいので、金型１と樹脂層３を剥離する時に樹脂層３
表面の最外周部を破損することなく、複合型光学素子６
を製造することができる。また、金型１が独立して上下
動可能な内型１ｂと外型１ｃにより構成されているの
で、条件の変更による外型１ｃの中心軸となす角度の変
更が可能で、かつ内型１ｂと外型１ｃを別々に製作でき
るので金型１の加工が容易である。According to the manufacturing method of this embodiment, since the contact angle at the position where the outermost peripheral portion of the resin layer 3 contacts the mold 1 is somewhat large, the resin layer 3 is removed when the mold 1 is separated from the resin layer 3.
Without damaging the outermost peripheral portion of the surface, the composite optical element 6
Can be manufactured. Further, since the mold 1 is composed of the inner mold 1b and the outer mold 1c which can move up and down independently, the angle formed with the center axis of the outer mold 1c can be changed by changing the conditions, and the inner mold 1b can be formed. Since the mold 1 and the outer mold 1c can be manufactured separately, the processing of the mold 1 is easy.
【００１８】[0018]
【実施例３】まず、構成を説明する。図１５に示すよう
に、本実施例は、前記実施例２の金型１の外型１ｃの光
学面に厚さ１０ｍｍのテフロン（登録商標）膜１ｄを設
けた点と、外型１ｃと中心軸のなす角度が５５度である
点と、基材２が成形面が凹面で成形面と反対側の面が凸
面のメニスカスレンズであり、成形面の曲率半径が２０
０ｍｍ、外径が４０ｍｍである点と、樹脂層３の中心軸
上の厚さが０．１５ｍｍ、有効径が３５ｍｍである点が
異なり、他の構成は実施例２と同じである。また、本実
施例の製造方法は実施例２と同じである。Embodiment 3 First, the configuration will be described. As shown in FIG. 15, the present embodiment is different from the second embodiment in that a 10 mm thick Teflon (registered trademark) film 1d is provided on the optical surface of the outer mold 1c of the mold 1 of the second embodiment. The angle between the axes is 55 degrees, the base 2 is a meniscus lens having a concave molding surface and a convex surface opposite to the molding surface, and the molding surface has a radius of curvature of 20.
The difference is that the outer diameter is 0 mm and the outer diameter is 40 mm, and the thickness of the resin layer 3 on the central axis is 0.15 mm and the effective diameter is 35 mm. The other configuration is the same as that of the second embodiment. The manufacturing method of this embodiment is the same as that of the second embodiment.
【００１９】本実施例によれば、樹脂層３の最外周部と
金型１が接触する位置での接触角がある程度大きいの
で、金型１と樹脂層３を剥離する時に樹脂層３表面の最
外周部を破損することなく、複合型光学素子６を製造す
ることができる。また、金型１の光学有効径の外側に樹
脂に対して金型材質よりも濡れ性の悪いテフロン膜１ｄ
を設けて樹脂層３の最外周部をテフロン膜１ｄに接触さ
せているので、金型材質と樹脂層３が直接接触する場合
よりも接触角を大きくすることができる。また、金型１
が独立して上下動可能な内型１ｂと外型１ｃにより構成
されているので、条件の変更による外型１ｃの中心軸と
のなす角度の変更が可能で、かつ内型１ｂと外型１ｃを
別々に製作できるので金型１の加工が容易である。According to the present embodiment, the contact angle at the position where the outermost peripheral portion of the resin layer 3 and the mold 1 come into contact with each other is large to some extent. The composite optical element 6 can be manufactured without damaging the outermost periphery. Further, a Teflon film 1d having a lower wettability with respect to the resin than the material of the mold outside the optical effective diameter of the mold 1.
Is provided so that the outermost peripheral portion of the resin layer 3 is in contact with the Teflon film 1d, so that the contact angle can be made larger than when the mold material and the resin layer 3 are in direct contact. Also, mold 1
Is composed of an inner mold 1b and an outer mold 1c which can move up and down independently, so that an angle between the inner mold 1b and the center axis of the outer mold 1c can be changed by changing conditions, and the inner mold 1b and the outer mold 1c can be changed. Can be manufactured separately, so that the processing of the mold 1 is easy.
【００２０】なお、本実施例では金型１を独立して上下
動自在な内型１ｂと外型１ｃにより構成しているが、内
型１ｂと外型１ｃを一体とした金型１を用いた場合にも
同様な効果が得られる。In this embodiment, the mold 1 is composed of an inner mold 1b and an outer mold 1c which can be moved up and down independently. However, the mold 1 in which the inner mold 1b and the outer mold 1c are integrated is used. The same effect can be obtained when there is.
【００２１】また、前記各実施例では、金型１と樹脂層
３を剥離するための剥離用の部材を１つだけ設けている
が、本発明はこれに限定されるものではなく、剥離用の
部材を２つ、３つあるいは基材２の全周に対して軸対称
形状に設けることができ、同様な効果が得られる。In each of the above embodiments, only one release member for releasing the mold 1 and the resin layer 3 is provided. However, the present invention is not limited to this. Can be provided in an axially symmetric shape with respect to two, three or the entire circumference of the substrate 2, and the same effect can be obtained.
【００２２】[0022]
【発明の効果】以上のように、本発明の複合型光学素子
の製造方法によれば、樹脂層の最外周部と金型が接触す
る位置での接触角がある程度大きいので、金型と樹脂層
を剥離する時に樹脂層の最外周部を破損することなく、
良好な複合型光学素子を製造することができ、結果とし
て製品としての歩留りも向上する。As described above, according to the method for manufacturing a composite optical element of the present invention, the contact angle at the position where the outermost peripheral portion of the resin layer and the mold come into contact with each other is large to some extent. Without breaking the outermost part of the resin layer when peeling the layer,
A good composite optical element can be manufactured, and as a result, the yield as a product is improved.
【図１】本発明の製造方法を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a manufacturing method of the present invention.
【図２】本発明の製造方法を示す縦断面図である。FIG. 2 is a longitudinal sectional view showing a manufacturing method of the present invention.
【図３】本発明の製造方法を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing the manufacturing method of the present invention.
【図４】本発明の製造方法を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing the manufacturing method of the present invention.
【図５】本発明の実施例１の製造方法を示す縦断面図で
ある。FIG. 5 is a longitudinal sectional view illustrating the manufacturing method of the first embodiment of the present invention.
【図６】同実施例１の製造方法を示す縦断面図である。FIG. 6 is a longitudinal sectional view illustrating the manufacturing method of Example 1;
【図７】同実施例１の製造方法を示す縦断面図である。FIG. 7 is a vertical sectional view showing the manufacturing method of Example 1;
【図８】同実施例１の製造方法を示す縦断面図である。FIG. 8 is a vertical sectional view showing the manufacturing method of Example 1;
【図９】同実施例１の製造方法を示す縦断面図である。FIG. 9 is a vertical sectional view showing the manufacturing method of Example 1;
【図１０】同実施例１の製造方法を示す縦断面図であ
る。FIG. 10 is a vertical sectional view showing the manufacturing method of Example 1;
【図１１】本発明の実施例２の製造方法を示す縦断面図
である。FIG. 11 is a longitudinal sectional view illustrating the manufacturing method of the second embodiment of the present invention.
【図１２】同実施例２の製造方法を示す縦断面図であ
る。FIG. 12 is a longitudinal sectional view illustrating the manufacturing method of Example 2;
【図１３】同実施例２の製造方法を示す縦断面図であ
る。FIG. 13 is a vertical sectional view showing the manufacturing method of Example 2;
【図１４】同実施例２の製造方法を示す縦断面図であ
る。FIG. 14 is a longitudinal sectional view illustrating the manufacturing method of Example 2;
【図１５】本発明の実施例３の製造方法を示す縦断面図
である。FIG. 15 is a longitudinal sectional view showing the manufacturing method of the third embodiment of the present invention.
１ 金型 １ｂ 内型 １ｃ 外型 １ｄ テフロン膜 ２ 基材 ３ 樹脂層 ４ 剥離用の部材 ５ 樹脂 ６ 複合型光学素子 DESCRIPTION OF SYMBOLS 1 Die 1b Inner mold 1c Outer mold 1d Teflon film 2 Base material 3 Resin layer 4 Peeling member 5 Resin 6 Composite optical element
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 39/10 B29C 39/26 - 39/36 B29D 11/00 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B29C 39/10 B29C 39/26-39/36 B29D 11/00
Claims (2)
面にエネルギー硬化型の樹脂を載置し、光学素子成形用
金型により押圧して所望の樹脂層を形成し、エネルギー
の照射により樹脂層を硬化させ、硬化させた樹脂層を前
記金型から剥離する複合型光学素子の製造方法におい
て、前記金型の光学面の有効径の外側に中心軸と１５度
以上４５度以下の角度をなし、かつ中心軸から離れるに
つれて基材の成形面の光学有効径内の最外周部の点を通
り中心軸に垂直な面との距離が大きくなる形状を有する
金型を用いることを特徴とする複合型光学素子の製造方
法。An energy-curable resin is placed on at least one surface of a substrate of an optical element, and is pressed by a mold for forming an optical element to form a desired resin layer. In the method for manufacturing a composite optical element in which the layer is cured and the cured resin layer is peeled off from the mold, an angle of 15 ° or more and 45 ° or less with respect to the central axis outside the effective diameter of the optical surface of the mold is provided. None, and using a mold having a shape in which the distance from the plane perpendicular to the center axis increases through the point of the outermost periphery in the optically effective diameter of the molding surface of the base material as the distance from the center axis increases A method for manufacturing a composite optical element.
面にエネルギー硬化型の樹脂を載置し、光学素子成形用
金型により押圧して所望の樹脂層を形成し、エネルギー
の照射により樹脂層を硬化させ、硬化させた樹脂層を前
記金型から剥離する複合型光学素子の製造方法におい
て、前記金型の光学面の有効径の外側に金型の材質より
も樹脂に対する濡れ性が悪い物質による膜を設け、前記
金型の光学面の有効径の外側が中心軸と１５度以上５５
度以下の角度をなし、かつ中心軸から離れるにつれて基
材の成形面の光学有効径内の最外周部の点を通り中心軸
に垂直な面との距離が大きくなる形状を有する金型を用
いることを特徴とする複合型光学素子の製造方法。2. An energy-curable resin is placed on at least one surface of a substrate of an optical element, and is pressed by a mold for forming an optical element to form a desired resin layer. In the method of manufacturing a composite optical element in which the layer is cured and the cured resin layer is separated from the mold, the wettability to the resin is lower than the material of the mold outside the effective diameter of the optical surface of the mold. A film made of a substance is provided, and the outside of the effective diameter of the optical surface of the mold is at least 15 degrees with respect to the central axis.
Use a mold having a shape that forms an angle of less than or equal to the degree and that the distance from the surface perpendicular to the central axis increases through the point of the outermost periphery in the optically effective diameter of the molding surface of the substrate as the distance from the central axis increases A method for manufacturing a composite optical element, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24375493A JP3184677B2 (en) | 1993-09-03 | 1993-09-03 | Method for manufacturing composite optical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24375493A JP3184677B2 (en) | 1993-09-03 | 1993-09-03 | Method for manufacturing composite optical element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0768569A JPH0768569A (en) | 1995-03-14 |
| JP3184677B2 true JP3184677B2 (en) | 2001-07-09 |
Family
ID=17108492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24375493A Expired - Fee Related JP3184677B2 (en) | 1993-09-03 | 1993-09-03 | Method for manufacturing composite optical element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3184677B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4051994B2 (en) * | 2002-04-23 | 2008-02-27 | ソニー株式会社 | Compound lens molding method and compound lens |
| JP2010241071A (en) * | 2009-04-09 | 2010-10-28 | Olympus Corp | Composite optical element and method for manufacturing the same |
-
1993
- 1993-09-03 JP JP24375493A patent/JP3184677B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0768569A (en) | 1995-03-14 |
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