JPH05208833A - Manufacturing method of aspherical molded lens - Google Patents
Manufacturing method of aspherical molded lensInfo
- Publication number
- JPH05208833A JPH05208833A JP4014553A JP1455392A JPH05208833A JP H05208833 A JPH05208833 A JP H05208833A JP 4014553 A JP4014553 A JP 4014553A JP 1455392 A JP1455392 A JP 1455392A JP H05208833 A JPH05208833 A JP H05208833A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- aspherical
- range
- molding
- mold
- 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.)
- Granted
Links
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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/72—Barrel presses or equivalent, e.g. of the ring mould type
- C03B2215/73—Barrel presses or equivalent, e.g. of the ring mould type with means to allow glass overflow in a direction perpendicular to the press axis
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
(57)【要約】
【目的】 書望のレンズ厚を保ちながら成形型の加工外
径と成形型の熱容量を小さくし、成形時間を短縮する。
【構成】 少なくとも一方の光学機能面３が非球面形状
を有する一対の成形型１，２と、一対の成形型１，２の
軸芯を合致させて上下に摺動させる胴型５とを有し、成
形型の加工範囲が非球面レンズの光学有効径Ｃと転写余
剰範囲Ｅからなり、転写余剰範囲Ｅを平面形状に構成す
る。この構成の成形型を用いてレンズを成型することに
より成型型内に充填するガラス材料が変動しても転写余
剰範囲で吸収し、常に一定のレンズ厚を保持しつつ、高
精度で光学機能面を転写した非球面レンズを製造するこ
とができる。
(57) [Abstract] [Purpose] To reduce the molding time and the heat capacity of the mold while maintaining the desired lens thickness. A pair of molding dies 1 and 2 in which at least one optical function surface 3 has an aspherical shape, and a body mold 5 that slides up and down with the axes of the pair of molding dies 1 and 2 aligned with each other are provided. Then, the processing range of the molding die is composed of the optical effective diameter C of the aspherical lens and the transfer surplus range E, and the transfer surplus range E is formed into a planar shape. By molding the lens using the mold with this configuration, even if the glass material filled in the mold fluctuates, it is absorbed in the transfer surplus range, and while maintaining a constant lens thickness, the optical function surface is highly accurate. It is possible to manufacture an aspherical lens on which is transferred.
Description
【０００１】[0001]
【産業上の利用分野】本発明は光学機器に使用される非
球面レンズを精密ガラス成形法により形成する非球面成
形レンズの製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an aspherical lens formed by precision glass molding for forming an aspherical lens used in optical equipment.
【０００２】[0002]
【従来の技術】近年、光学レンズの製造方法として研磨
工程をなくし、１度で成形する一発成形が多く試みら
れ、実用化段階にある。このような一発成形レンズでは
球面，非球面にかかわらず得ようとしているレンズに対
応した成形型を制作して成形に用いればよい。2. Description of the Related Art In recent years, as a method of manufacturing an optical lens, many attempts have been made to eliminate the polishing step and perform one-time molding in which molding is performed once, and the method is in the practical stage. With such a one-shot molding lens, a molding die corresponding to the lens to be obtained regardless of whether it is spherical or aspherical may be produced and used for molding.
【０００３】一般的に成形型の加工範囲は、レンズの光
学有効径と転写余剰範囲からなり、前記転写余剰範囲の
加工形状は前記レンズのレンズ面を延長して加工が施さ
れている。したがって、成形型内の容積を大きくしよう
とすれば転写余剰範囲を大きくする必要があり、上型，
下型の対向する平坦な部分同士が接触し、所望のレンズ
厚が得られない。したがって、通常、成形型は上記の対
向する平坦な部分同士は接触しないように制作される。
しかしながら非球面レンズにおいては、加工範囲からな
る成形型内の体積と所望するレンズ体積の関係について
はあまり知られていない。Generally, the processing range of the molding die is composed of the optical effective diameter of the lens and the transfer surplus range, and the processing shape of the transfer surplus range is processed by extending the lens surface of the lens. Therefore, in order to increase the volume inside the molding die, it is necessary to increase the transfer surplus range.
Since the flat parts of the lower mold which face each other are in contact with each other, a desired lens thickness cannot be obtained. Therefore, the forming die is usually manufactured so that the above-mentioned opposed flat portions do not come into contact with each other.
However, in the case of an aspherical lens, little is known about the relationship between the desired volume of the lens and the volume of the molding die.
【０００４】図２に、従来の金型を用いて高温時におい
ての成形を完了した直後の高温状態のレンズの状態を示
す。成形型は、上型１１，下型１２，胴型１３によって
構成される。上型１１のレンズ機能面および下型１２の
レンズ機能面には、それぞれ非球面形状１４，１５が形
成されている。胴型１３はこれらの上型１１，下型１２
の軸芯を一致させて摺動自在に保持するものである。レ
ンズ１６は図２に示す隙間１７を有する上型１１，下型
１２の対向する平坦部同士が接触する直前まで成形され
て、Ａに示すレンズ光学有効径Ａとレンズ外径Ａ′より
外周方向にはみ出して光学機能面の転写が行われる。FIG. 2 shows a state of a lens in a high temperature state immediately after completion of molding at a high temperature using a conventional mold. The molding die is composed of an upper die 11, a lower die 12, and a body die 13. Aspherical shapes 14 and 15 are formed on the lens function surface of the upper mold 11 and the lens function surface of the lower mold 12, respectively. The body mold 13 includes these upper mold 11 and lower mold 12.
The axes of the two are aligned and held slidably. The lens 16 is molded until just before the facing flat portions of the upper mold 11 and the lower mold 12 having the gap 17 shown in FIG. 2 come into contact with each other, and the lens optical effective diameter A and the lens outer diameter A'shown in the outer peripheral direction. The optical function surface is transferred by protruding.
【０００５】この状態で成形されたレンズを冷却して
も、レンズ光学有効径Ａおよびレンズ外径Ａ′からのは
み出し量が多いため、レンズの収縮量が大きくても所望
レンズ外径Ａ′まで転写することができる。特に非球面
形状については曲率が一定でないため、レンズ光学有効
径Ａから十分外側まで転写を行うことにより、所望の性
能のレンズをより安定に成形することができる。すなわ
ち、高精度な転写は、図２に示すレンズ光学有効径Ａか
ら頂点（加工外径）１９までの転写余剰範囲Ｂをいかに
大きくするか、およびレンズ外径Ａ′を得るためにも頂
点（加工外径）１９までの転写余剰範囲Ｂ′をいかに大
きくできるかによって決定される。Even when the lens molded in this state is cooled, the amount of protrusion from the lens optical effective diameter A and the lens outer diameter A'is large, so that even if the lens contraction is large, the desired lens outer diameter A'is reached. Can be transcribed. In particular, since the curvature of the aspherical surface is not constant, by performing the transfer from the lens optical effective diameter A to the outside sufficiently, it is possible to more stably form a lens having desired performance. That is, in high-accuracy transfer, how to increase the transfer surplus range B from the lens optical effective diameter A to the apex (processing outer diameter) 19 shown in FIG. 2 and to obtain the lens outer diameter A ′ ( It is determined by how large the transfer surplus range B'up to the processing outer diameter) 19 can be made.
【０００６】また、金型内に充填されるガラス素材量を
正確に計算することも転写精度をよくするための一条件
となっている。Accurate calculation of the amount of glass material filled in the mold is also a condition for improving transfer accuracy.
【０００７】[0007]
【発明が解決しようとする課題】しかし、このような従
来の非球面レンスの製造法では、転写余剰範囲Ｂを大き
くするにも限界があり、以下のような問題点があった。However, in such a conventional method of manufacturing an aspherical lens, there is a limit in increasing the transfer surplus range B, and there are the following problems.
【０００８】（１）転写余剰範囲Ｂを大きくすれば上型
１１と下型１２の対向する平坦部１８同士が接触して所
望のレンズ厚みが得られなくなる。(1) If the transfer surplus range B is increased, the flat portions 18 of the upper mold 11 and the lower mold 12 that face each other come into contact with each other, and the desired lens thickness cannot be obtained.
【０００９】（２）加工外径Ａ″が大きくなれば、成形
型の加工時に工具摩耗などにより所望のレンズ面形状が
得られにくい。(2) If the machining outer diameter A ″ is large, it is difficult to obtain a desired lens surface shape due to tool wear during machining of the molding die.
【００１０】（３）転写余剰範囲Ｂの加工範囲を大きく
すれば成形型および胴型の外形が大きくなり、全体の熱
容量が増すため成形型の昇温，冷却に時間がかかる。(3) If the processing range of the surplus transfer area B is increased, the outer shapes of the forming die and the body are enlarged, and the heat capacity of the whole is increased, so that it takes time to raise and cool the forming die.
【００１１】本発明はこのような従来の成形型によって
製造されるレンズの課題を解決するもので、所望のレン
ズ厚を得るとともに成形型の加工外径Ａ″を必要最小限
とし、安定して作製できる所望の非球面レンズを得ると
ともに、成形型全体の熱容量が少なくて、生産性の高い
非球面レンズの製造法を提供することを目的とするもの
である。The present invention solves the problems of the lens manufactured by the conventional molding die as described above, and obtains a desired lens thickness and minimizes the processing outer diameter A ″ of the molding die to stably achieve the desired lens thickness. It is an object of the present invention to obtain a desired aspherical lens that can be produced, and to provide a highly productive method for producing an aspherical lens in which the heat capacity of the entire molding die is small.
【００１２】[0012]
【課題を解決するための手段】この目的を達成するため
に、本発明の非球面成形レンズは、少なくとも一方の光
学機能面が非球面形状を有する一対の成形型と、前記一
対の成形型の軸芯を合致させて上下方向に摺動させる胴
型とを有し、前記成形型の加工範囲が非球面レンズの光
学有効径と転写余剰範囲からなり、前記転写余剰範囲内
が任意の形状である非球面レンズ成形型によって成形す
るようにしたものである。To achieve this object, an aspherical molding lens of the present invention comprises a pair of molding dies having at least one optical functional surface having an aspherical shape, and a pair of the molding dies. And a cylindrical mold that slides in the vertical direction with the axes aligned with each other, and the processing range of the molding die is the optical effective diameter of the aspherical lens and the transfer surplus range, and the transfer surplus range has an arbitrary shape. It is formed by a certain aspherical lens forming die.
【００１３】[0013]
【作用】この製造法によれば、成形型の加工範囲が非球
面レンズの光学有効径と転写余剰範囲からなり、前記転
写余剰範囲内より頂点（加工外径）までレンズの傾き角
より鈍角な角度を有する平面（直線）で構成することに
より、充填するガラス量が少なくてもこれら成形型の上
型，下型の対向する平坦部同士の隙間が接近せずに、逆
に広げることが可能となり、頂点（加工外径）までの加
工範囲を大きくせずに成形型内の容積を制御することが
でき、充填するガラス量に見合った適切な容積に保つこ
とができる。According to this manufacturing method, the processing range of the molding die is composed of the optical effective diameter of the aspherical lens and the transfer surplus range, and the processing angle of the lens is obtuse than the inclination angle of the lens from the transfer surplus range to the apex (processing outer diameter). By forming a flat surface (straight line) that has an angle, even if the amount of glass to be filled is small, it is possible to expand the molds in the opposite directions without the gaps between the flat parts of the upper mold and the lower mold facing each other. Therefore, the volume in the mold can be controlled without increasing the processing range up to the apex (processing outer diameter), and the volume can be maintained at an appropriate volume corresponding to the amount of glass to be filled.
【００１４】この成形型全体を加熱してガラス素材を一
対の成形型内に充填し、押圧成形することにより、所望
の光学有効径とレンズ外径を有する非球面レンズを作製
することができる。By heating the entire molding die to fill the glass material in a pair of molding dies and press-molding, an aspherical lens having a desired optical effective diameter and lens outer diameter can be manufactured.
【００１５】[0015]
【実施例】以下に、本発明の一実施例の非球面レンズの
製造法を図面を参照しながら説明する。図１に本実施例
の非球面レンズの製造法に用いる成形型の構成を示す。
図に示すように上型１と下型２とは相対向する面に夫々
非球面形状３，４が形成されている。上型１，下型２は
従来例と同様にその軸に沿って上下に胴型５によって摺
動自在に保持される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing an aspherical lens according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the structure of a molding die used in the method of manufacturing an aspherical lens of this embodiment.
As shown in the figure, the upper mold 1 and the lower mold 2 are formed with aspherical shapes 3 and 4 on their surfaces facing each other. The upper die 1 and the lower die 2 are slidably held by the body die 5 along the axis thereof as in the conventional example.
【００１６】つぎに、本実施例の上型１，下型２で成形
されたレンズ６と転写余剰範囲Ｅの関係について以下に
詳細に説明する。Next, the relationship between the lens 6 formed by the upper mold 1 and the lower mold 2 of this embodiment and the surplus transfer area E will be described in detail below.
【００１７】所望のレンズを得るために加工された上型
１，下型２のレンズ光学有効径をＣで示し、Ｄは所望レ
ンズの外径を示している。The lens optical effective diameter of the upper mold 1 and the lower mold 2 processed to obtain the desired lens is indicated by C, and D is the outer diameter of the desired lens.
【００１８】Ｅ，Ｅ′は所望のレンズ光学有効径Ｃとレ
ンズ外径Ｄを得るために十分な精度で転写を行うための
条件である転写余剰範囲を示す。Ｆは所望レンズの非球
面形状の傾き角より鈍角な角度にて頂点９まで平面（直
線）Ｆで加工されている範囲を示している。Ｆ位置の平
面（直線）と非球面形状との接点はＲを施した加工がさ
れている。E and E'indicate a transfer surplus range which is a condition for performing transfer with sufficient accuracy to obtain a desired lens optical effective diameter C and a desired lens outer diameter D. Reference symbol F denotes a range processed by a plane (straight line) F up to the apex 9 at an obtuse angle from the inclination angle of the aspherical shape of the desired lens. The contact point between the plane (straight line) at the F position and the aspherical surface is processed by applying R.
【００１９】一方、成形型内に充填されるガラス素材
は、所望のレンズ外径Ｄの体積よりも大きく、上型１，
下型２の成形型内の加工外径Ｇまでの体積よりも小さく
設定される。したがって、変形を開始したガラス素材
は、図中のレンズ光学有効径Ｃおよびレンズ外径Ｄより
更に外周方向にまで変形し、頂点９まで到達せずに転写
が行われる。このようにして、転写余剰範囲Ｅ′の領域
において、転写が完了し、所望のレンズ光学有効径Ｃお
よびレンズ外径Ｄが得られている。成形を完了したレン
ズ６が十分な精度で転写されるための条件としては、転
写余剰範囲Ｅおよび積を大きく見積る必要がある。On the other hand, the glass material filled in the molding die is larger than the volume of the desired lens outer diameter D.
The volume is set to be smaller than the volume up to the processing outer diameter G in the forming die of the lower die 2. Therefore, the glass material that has started to be deformed is further deformed to the outer peripheral direction from the lens optical effective diameter C and the lens outer diameter D in the figure, and the transfer is performed without reaching the apex 9. In this way, the transfer is completed in the area of the transfer surplus range E ′, and the desired lens optical effective diameter C and lens outer diameter D are obtained. It is necessary to largely estimate the transfer surplus range E and the product as a condition for transferring the lens 6 that has been molded with sufficient accuracy.
【００２０】そこで本実施例では成形型の加工外径Ｇと
胴型５の外径を大きくすることなく転写余剰範囲Ｅ内の
体積を調整し定めるようにしている。すなわち、転写余
剰範囲Ｅ内より、頂点９までレンズの傾き角より鈍角な
角度で、平面（直線）加工Ｆを施すことにより、上型
１，下型２の対向する平坦部７同士の隙間８は広くな
り、転写余剰範囲Ｅ内の体積を調整することができる。Therefore, in this embodiment, the volume within the transfer surplus range E is adjusted and determined without increasing the outer diameter G of the forming die and the outer diameter of the body die 5. That is, by performing the plane (straight line) processing F from the transfer surplus range E to the apex 9 at an obtuse angle than the inclination angle of the lens, the gap 8 between the flat portions 7 facing each other of the upper mold 1 and the lower mold 2. Becomes wider, and the volume in the transfer surplus area E can be adjusted.
【００２１】つぎに本実施例の成形型およびガラス素材
の体積と所望レンズの光学特性との関係について説明す
る。Next, the relationship between the volume of the molding die and glass material of this embodiment and the optical characteristics of the desired lens will be described.
【００２２】所望のレンズの外径Ｄまでの体積が２３
０．７３２mm3でレンズ中心厚みを２．４mm、レンズ光
学有効径をφ１２．４０mm、レンズ外径Ｄをφ１３．３
０mmの両面非球面レンズを得ようとした場合、充填する
ガラス素材の体積は上記所望レンズの体積よりも大きく
見積る必要があるため、たとえば２８２．５６mm3とす
る。こうして上型１，下型２それぞれの成形型は所望レ
ンズの曲率が転写するように上型１の中心部加工深さを
０．８４５６mm、下型２の中心部加工深さを０．７６４
８mmとする。上型，下型２の対向する平坦部７同士の隙
間８は０．７８９６mmとなり、加工範囲Ｇまでの金型容
積は上記ガラス素材の体積よりも大きくする必要がある
ため、それぞれの上型１，下型２の加工外径Ｇを仮にφ
１６．９mm平面（直線）加工径Ｆ′をφ１３．２０mmか
らとし、頂点（加工外径）９まで平面（直線）Ｆ加工を
すると、上記一対の成形型内の体積は３１４．９３６mm
3となり、転写余剰範囲Ｅ′の領域で成形が完了する。The volume up to the outer diameter D of the desired lens is 23
At 0.732 mm 3 , the lens center thickness is 2.4 mm, the lens optical effective diameter is φ12.40 mm, and the lens outer diameter D is φ13.3.
When a 0 mm double-sided aspherical lens is to be obtained, the volume of the glass material to be filled needs to be estimated to be larger than the volume of the desired lens, and is, for example, 282.56 mm 3 . In this way, the upper die 1 and the lower die 2 each have a center portion processing depth of 0.8456 mm and a lower die 2 center portion processing depth of 0.764 so that the curvature of the desired lens is transferred.
8 mm. The gap 8 between the flat portions 7 facing each other of the upper mold 2 and the lower mold 2 is 0.7896 mm, and the mold volume up to the processing range G needs to be larger than the volume of the above glass material. , The machining diameter G of the lower mold 2 is φ
16.9mm Plane (straight line) machining diameter F'from Φ13.20mm and plane (straight line) F machining up to apex (machining outer diameter) 9, the volume in the above pair of molding dies is 314.936mm.
3 , the molding is completed in the area of the transfer surplus area E '.
【００２３】この構成により、成形型内の容積（３１
４．９３６mm3）−所望レンズ体積（２３０．７３２m
m3）＝余裕度（８４．２０４mm3）が大きくなり、所望
レンズの外径Ｄまでの両凸レンズを安定して製造するこ
とができた。With this structure, the volume (31
4.936mm 3) - the desired lens volume (230.732M
m 3 ) = margin (84.204 mm 3 ) increased, and a biconvex lens up to the outer diameter D of the desired lens could be stably manufactured.
【００２４】このように転写余剰範囲の体積を大きく見
積った金型を使用することにより、成形された非球面レ
ンズは確実に所望レンズの光学有効径とレンズ外径まで
精密な面転写を得ることができる。By using a mold in which the volume of the surplus transfer range is largely estimated in this way, the molded aspherical lens can surely obtain a precise surface transfer up to the optically effective diameter of the desired lens and the lens outer diameter. You can
【００２５】[0025]
【発明の効果】以上の実施例の説明から明らかなように
本発明によれば、転写余剰範囲内からレンズの傾き角よ
り鈍角な角度にて頂点（加工外径）まで平面（直線）加
工することにより、ガラス材料が不足しても上型，下型
の対向する平坦部同士が接触することなく、転写余剰範
囲の体積を大きく見積ることが可能であり、適切な金型
容積に調整することができる。この金型を用いることに
よりガラス素材の充填するときに発生する体積バラツキ
および製造過程でのレンズ厚みなどの変動によるレンズ
体積のバラツキが生じても十分に吸収できるため、所望
レンズを安定して製造することができる。As is apparent from the above description of the embodiments, according to the present invention, a plane (straight line) is machined from the transfer surplus range to the apex (machining outer diameter) at an obtuse angle from the tilt angle of the lens. Thus, even if the glass material is insufficient, the flat areas of the upper mold and the lower mold that face each other do not come into contact with each other, and it is possible to estimate the volume of the surplus transfer range to a large extent, and adjust the mold volume appropriately. You can By using this mold, even if there is a variation in volume that occurs when the glass material is filled and a variation in lens volume due to variations in lens thickness during the manufacturing process, it can be sufficiently absorbed, so that the desired lens can be manufactured stably. can do.
【００２６】また、金型を加工する場合、頂点（加工外
径）までの加工範囲は、上記平面（直線）加工を施すこ
とにより必要最小限とすることができ、成形型全体の熱
容量を小さくして成形の効率を高めることが可能であ
る。さらに、頂点（加工外径）までの加工範囲を柔軟に
変えることができるため、標準化金型を用いることがで
きる成型用途範囲も広くなる。Further, when the die is processed, the processing range up to the apex (processing outer diameter) can be minimized by performing the above-mentioned plane (straight line) processing, and the heat capacity of the entire molding die can be reduced. It is possible to improve the molding efficiency. Furthermore, since the processing range up to the apex (processing outer diameter) can be flexibly changed, the range of molding applications in which the standardized mold can be used is widened.
【００２７】[0027]
【図１】本発明の一実施例の非球面成形レンズと成形型
の断面図FIG. 1 is a cross-sectional view of an aspherical molded lens and a mold according to an embodiment of the present invention.
【００２８】[0028]
【図２】従来の非球面成形レンズと成形型の断面図FIG. 2 is a sectional view of a conventional aspherical molded lens and a molding die.
【００２９】[0029]
１ 上型 ２ 下型 ３，４ 光学機能面 ５ 胴型 ６ レンズ ７ 平坦部 ８ 隙間 ９ 頂点（加工外径） Ｃ レンズ光学有効径 Ｄ レンズ外径 Ｅ，Ｅ′ 転写余剰範囲 Ｆ 平面（直線）加工範囲 Ｇ 加工範囲（加工外径） 1 Upper mold 2 Lower mold 3,4 Optical function surface 5 Body type 6 Lens 7 Flat part 8 Gap 9 Apex (Processing outer diameter) C Lens optical effective diameter D Lens outer diameter E, E ′ Transfer surplus range F Plane (straight line) Processing range G Processing range (processing outside diameter)
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年１２月１８日[Submission date] December 18, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２６[Correction target item name] 0026
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２６】また、金型を加工する場合、頂点（加工外
径）までの加工範囲は、上記平面（直線）加工を施すこ
とにより必要最小限とすることができ、成形型全体の熱
容量を小さくして成形の効率を高めることが必要であ
る。さらに、頂点（加工外径）までの加工範囲を柔軟に
変えることができるため、標準化金型を用いることがで
きる成型用途範囲も広くなる。Further, when the die is processed, the processing range up to the apex (processing outer diameter) can be minimized by performing the above-mentioned plane (straight line) processing, and the heat capacity of the entire molding die can be reduced. Therefore, it is necessary to improve the molding efficiency. Furthermore, since the processing range up to the apex (processing outer diameter) can be flexibly changed, the range of molding applications in which the standardized mold can be used is widened.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief description of the drawing
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一実施例の非球面成形レンズと成形型
の断面図FIG. 1 is a cross-sectional view of an aspherical molded lens and a mold according to an embodiment of the present invention.
【図２】従来の非球面成形レンズと成形型の断面図FIG. 2 is a sectional view of a conventional aspherical molded lens and a molding die.
【符号の説明】 １ 上型 ２ 下型 ３，４ 光学機能面 ５ 胴型 ６ レンズ ７ 平坦部 ８ 隙間 ９ 頂点（加工外径） Ｃ レンズ光学有効径 Ｄ レンズ外径 Ｅ，Ｅ’ 転写余剰範囲 Ｆ 平面（直線）加工範囲 Ｇ 加工範囲（加工外径）[Explanation of symbols] 1 Upper mold 2 Lower mold 3,4 Optical function surface 5 Body type 6 Lens 7 Flat part 8 Gap 9 Apex (processing outer diameter) C Lens optical effective diameter D Lens outer diameter E, E'Transfer surplus range F Plane (straight line) machining range G Machining range (machining outer diameter)
Claims (1)
状を有する一対の成形型と、前記一対の成形型の軸芯を
合致させて上下方向に摺動させる胴型とを有し、前記成
形型の加工範囲が非球面レンズの光学有効径と転写余剰
範囲からなり、前記転写余剰範囲が任意の面形状で構成
された非球面レンズ成形型を用いて成形する非球面成形
レンズの製造法。1. A molding die comprising: a pair of molding dies having at least one optical functional surface having an aspherical surface shape; and a barrel die that vertically slides with the axes of the pair of molding dies aligned with each other. A method of manufacturing an aspherical molded lens, wherein a processing range of a mold is composed of an optical effective diameter of an aspherical lens and a transfer surplus range, and the transfer surplus range is molded using an aspherical lens molding die having an arbitrary surface shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4014553A JP2661449B2 (en) | 1992-01-30 | 1992-01-30 | Manufacturing method of aspherical molded lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4014553A JP2661449B2 (en) | 1992-01-30 | 1992-01-30 | Manufacturing method of aspherical molded lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05208833A true JPH05208833A (en) | 1993-08-20 |
| JP2661449B2 JP2661449B2 (en) | 1997-10-08 |
Family
ID=11864344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4014553A Expired - Fee Related JP2661449B2 (en) | 1992-01-30 | 1992-01-30 | Manufacturing method of aspherical molded lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2661449B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101142157B1 (en) * | 2009-11-11 | 2012-05-10 | 삼성전기주식회사 | Measuring method for molding material and manufacturing method for lens using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62108799A (en) * | 1985-11-08 | 1987-05-20 | Toshiba Corp | Production of diamond film or diamond like carbon film |
-
1992
- 1992-01-30 JP JP4014553A patent/JP2661449B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62108799A (en) * | 1985-11-08 | 1987-05-20 | Toshiba Corp | Production of diamond film or diamond like carbon film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101142157B1 (en) * | 2009-11-11 | 2012-05-10 | 삼성전기주식회사 | Measuring method for molding material and manufacturing method for lens using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2661449B2 (en) | 1997-10-08 |
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