JPH0226839A - Glass molding machine - Google Patents

Glass molding machine

Info

Publication number
JPH0226839A
JPH0226839A JP17695488A JP17695488A JPH0226839A JP H0226839 A JPH0226839 A JP H0226839A JP 17695488 A JP17695488 A JP 17695488A JP 17695488 A JP17695488 A JP 17695488A JP H0226839 A JPH0226839 A JP H0226839A
Authority
JP
Japan
Prior art keywords
wall
molding
glass
molding chamber
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.)
Pending
Application number
JP17695488A
Other languages
Japanese (ja)
Inventor
Hide Hosoe
秀 細江
Katsuya Nakamura
勝也 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP17695488A priority Critical patent/JPH0226839A/en
Publication of JPH0226839A publication Critical patent/JPH0226839A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B11/00Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
    • C03B11/12Cooling, heating, or insulating the plunger, the mould, or the glass-pressing machine; cooling or heating of the glass in the mould
    • C03B11/122Heating

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

PURPOSE:To make it possible to efficiently heat a metal mold set in the molding chamber of a molding machine by forming a heat reflecting coat on the wall of the molding chamber to suppress the heating of the wall. CONSTITUTION:A metal mold M for molding is set in the molding chamber of a molding machine for molding an optical glass element, etc. When the wall 14 of the molding chamber is made of an IR transmitting material, a heat reflecting coat 10 is formed on the surface of the inner or outer wall. The temp. of the mold M is detected with IR escaping from the chamber through a part of the wall not covered with the coat 10.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ガラス光学素子やガラス器等(以下、単にガ
ラス光学素子と言う)の成形機に関し、特に、ガラス光
学素子のプレス成形前から後までの間において成形金型
や金型内のガラス材料乃至はガラス光学素子を加熱した
り、プレス成形後において成形金型やガラス光学素子を
冷却したり、成形金型等の加熱やさらにはプレス成形を
真空や不活性ガスの雰囲気で行ったりするのに用いられ
る成形室を備えた成形機に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a molding machine for glass optical elements, glassware, etc. (hereinafter simply referred to as glass optical elements), and in particular, the present invention relates to a molding machine for glass optical elements, glass vessels, etc. (hereinafter simply referred to as glass optical elements), and in particular, During the process, the mold, the glass material or the glass optical element in the mold may be heated, the mold or glass optical element may be cooled after press molding, the mold may be heated, or the glass optical element may be heated. The present invention relates to a molding machine equipped with a molding chamber used for press molding in a vacuum or an inert gas atmosphere.

〔従来の技術〕[Conventional technology]

上述のような成形機の成形室として、第4図や第5図に
示したような成形室が知られている。
As a molding chamber of the above-mentioned molding machine, a molding chamber as shown in FIGS. 4 and 5 is known.

第4図の成形室は、成形金型Mが入れられる空間を耐火
煉瓦や石綿等から成る断熱壁1で囲み、断熱壁lの外側
を鉄板等から成る外壁2で囲んで、外壁2と断熱壁1を
貫通して通気パイプ3を成形金型Mが入れられる空間に
開口するように設け、断熱壁1の内側面には成形金型M
やガラス材料乃至はガラス光学素子(以下、単にガラス
と言う)Gを加熱するための抵抗発熱体4を埋設してい
るものである。この成形室に成形金型MとガラスGをい
れるのは、断熱壁1と外壁2の取外し可能部分5を取外
すことによってなされ、成形室内で成形金型Mによりプ
レス成形を行うのは、断熱壁1と外壁2の取外し可能部
分6あるいはさらに取外し可能部分7を取外して、そこ
から成形金型Mの上型あるいはさらに下型を上下動させ
るためのプランジャーを挿入することによってなされる
。そして、加熱を真空雰囲気で行うためには、成形金型
M等を成形室に入れてからの取外し可能部分5の取付け
が気密にされ、プレス成形を真空雰囲気で行うためには
、さらにプランジャーと取外し可能部分6または7を取
外した外壁2との嵌合に気密を保持するためのバッキン
グ部材が用いられる。
In the molding chamber shown in Fig. 4, a space in which a mold M is placed is surrounded by a heat insulating wall 1 made of firebrick, asbestos, etc., and the outside of the heat insulating wall l is surrounded by an outer wall 2 made of iron plate, etc., and the outer wall 2 is insulated. A ventilation pipe 3 is provided so as to penetrate through the wall 1 and open into a space where the mold M is placed, and the mold M is installed on the inner surface of the heat insulating wall 1.
A resistance heating element 4 for heating a glass material or a glass optical element (hereinafter simply referred to as glass) G is embedded therein. The mold M and the glass G are placed in this molding chamber by removing the removable portions 5 of the heat insulating wall 1 and the outer wall 2, and the mold M is press-molded in the molding chamber by the heat insulating wall. This is done by removing the removable portion 6 or the removable portion 7 of the outer wall 1 and the outer wall 2, and inserting therein a plunger for vertically moving the upper mold or the lower mold of the molding die M. In order to perform heating in a vacuum atmosphere, the removable portion 5 must be attached airtight after the mold M etc. are placed in the molding chamber, and in order to perform press molding in a vacuum atmosphere, a plunger is required. A backing member is used to maintain an airtight fit between the outer wall 2 and the outer wall 2 from which the removable portion 6 or 7 is removed.

真空にするのは、通気バイブ3を通して排気することに
より行い、不活性ガス雰囲気にするのは、排気した後、
通気パイプ3を通して不活性ガスを送り込むことにより
行う。
A vacuum is created by exhausting through the ventilation vibrator 3, and an inert gas atmosphere is created after exhausting.
This is done by feeding inert gas through the ventilation pipe 3.

第5図の成形室は、耐火煉瓦や石綿等から成る断熱壁1
が囲む空間に外周に誘導加熱コイル8を存する内容器9
が設けられていて、図示してない成形金型およびガラス
は断熱壁1の取外し可能部分5および内容器9の上鏡板
を取外すことにより内容器9内に入れられるものであり
、通気バイブ3が断熱壁1および内容器9の下鏡板を貫
通して内容器9の内部に開口しているものである。この
成形室においても、プレス成形を行う場合は、断熱壁1
と内容器9の鏡板の取外し可能部分6またはさらに取外
し可能部分7が外されて、そこからプランジャーが挿入
されること、真空雰囲気で加熱したり、プレス成形を行
う場合は、上鏡板の取付けを気密にしたり、プランジャ
ーと内容器9の上鏡板や下鏡板との嵌合に気密を保持す
るためのバッキング部材が用いられることは同様である
The molding room shown in Figure 5 has an insulating wall made of firebrick, asbestos, etc.
An inner container 9 having an induction heating coil 8 on its outer periphery in a space surrounded by
A mold and glass (not shown) are placed into the inner container 9 by removing the removable portion 5 of the heat insulating wall 1 and the upper mirror plate of the inner container 9, and the ventilation vibrator 3 is It penetrates the heat insulating wall 1 and the lower end plate of the inner container 9 and opens into the interior of the inner container 9. Also in this molding chamber, when press molding is performed, the heat insulating wall 1
The removable portion 6 or further removable portion 7 of the end plate of the inner container 9 must be removed and the plunger inserted from there, and when heating in a vacuum atmosphere or press forming, the upper end plate must be attached. Similarly, a backing member is used to make the plunger airtight and to maintain airtightness in the fitting between the plunger and the upper end plate and the lower end plate of the inner container 9.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

第4図の成形室は、抵抗発熱体4で成形金型Mやガラス
Gを加熱する場合、熱容量の大きい断熱壁1も加熱する
ようになるから、電力を多く消費し、プレス成形後に通
気パイプ3から冷風を吹き込んで、冷却するような場合
も容易に冷却されないと言う問題がある。また、真空や
不活性ガス雰囲気にする場合、外壁2などにより気密性
を保つたとしても、多孔質の断熱壁1内の排気や換気も
行うことになるから、その分コストや時間が掛かると言
う問題もある。この点、第5図の成形室は、内容器9の
気密性を保てば、内容器9内だけについて排気や換気を
行うことになるから、真空や不活性ガス雰囲気にするコ
ストや時間が少なくて済む、しかし反面、成形金型やガ
ラスを加熱する場合、内容器9および断熱壁1も加熱す
るようになって、−層電力消費が増大し、冷却するのも
容易ではなくなる。
In the molding chamber shown in Fig. 4, when the mold M and the glass G are heated by the resistance heating element 4, the heat insulating wall 1, which has a large heat capacity, is also heated, which consumes a large amount of electricity, and the ventilation pipe is opened after press forming. There is a problem in that even when cooling is performed by blowing cold air from 3, it is not easy to cool down. In addition, when creating a vacuum or inert gas atmosphere, even if airtightness is maintained with the outer wall 2, the inside of the porous insulating wall 1 must be exhausted and ventilated, which increases cost and time. There is also a problem. In this regard, in the molding chamber shown in Fig. 5, if the airtightness of the inner container 9 is maintained, only the inside of the inner container 9 will be evacuated or ventilated, which will reduce the cost and time required to create a vacuum or inert gas atmosphere. On the other hand, when heating the mold and glass, the inner container 9 and the heat insulating wall 1 are also heated, increasing the power consumption of the lower layer and making it difficult to cool them.

本発明は、上述の問題を解消するためになされたもので
あり、成形金型やガラスを加熱するのに断熱壁を加熱す
ることが少なく、真空や不活性ガス雰囲気にするのに断
熱壁内の排気や換気を行うことのない成形室を備えたガ
ラス成形機の提供を目的とする。
The present invention was made in order to solve the above-mentioned problems, and there is little need to heat the insulating wall to heat the mold or glass, and it is necessary to heat the insulating wall to create a vacuum or inert gas atmosphere. The purpose of the present invention is to provide a glass molding machine equipped with a molding chamber that does not require exhaust or ventilation.

〔課題を解決するための手段〕[Means to solve the problem]

本発明は、成形金型が入れられる成形室を備えたガラス
光学素子等の成形機において、成形室の内壁面または成
形室の壁が赤外線透過材料から成るときは内壁面もしく
は外壁面に熱反射コートを設けたことを特徴とするガラ
ス成形機にあり、この構成によって前記目的を達成する
In a molding machine for glass optical elements, etc., which is equipped with a molding chamber into which a molding die is placed, when the inner wall surface of the molding chamber or the wall of the molding chamber is made of an infrared transmitting material, heat is reflected on the inner wall surface or the outer wall surface. The present invention is a glass forming machine characterized by being provided with a coat, and this configuration achieves the above object.

〔作 用〕[For production]

すなわち、本発明ガラス成形機の成形室は、内壁面に熱
反射コートが設けられていること、または壁が赤外線を
吸収することが少ない赤外線透過材料から成るときは内
壁面もしくは外壁面に熱反射コートが設けられているこ
とによって、壁を加熱することが少なく成形金型やガラ
スを効率的に加熱することができ、また真空や不活性ガ
ス雰囲気にするのに壁内の排気や換気を行わなくて済む
と言う作用効果を奏する。
That is, the molding chamber of the glass molding machine of the present invention is provided with a heat reflective coating on the inner wall surface, or when the wall is made of an infrared transmitting material that absorbs little infrared rays, the inner wall surface or the outer wall surface is provided with a heat reflective coating. By providing a coat, the mold and glass can be heated efficiently without heating the wall, and the inside of the wall must be exhausted or ventilated to create a vacuum or inert gas atmosphere. It has the effect that you can do without it.

〔実施例〕〔Example〕

以下、本発明を図示例によって説明する。 The present invention will be explained below using illustrated examples.

第1図乃至第3図はそれぞれ本発明ガラス成形機の成形
室断面図であり、図中第4図、第5図におけると同一符
号は同一機能部材を示している。
1 to 3 are sectional views of the molding chamber of the glass molding machine of the present invention, and the same reference numerals as in FIGS. 4 and 5 indicate the same functional members.

第1図の成形室は、成形金型MやガラスGが入れられる
空間を鉄板環員っていて内面にAu、 Ag。
The molding chamber shown in Fig. 1 is a space in which the mold M and the glass G are placed, and is made up of a steel plate ring, and the inner surface is coated with Au and Ag.

Cr、 AI等の金属あるいは5ift、 Ti0z、
 Zr0t、 CeOx+Taxes + MgF等の
金属酸化物や弗化物から成る熱反射コート10が設けら
れている内壁11で囲み、内壁11の外側を断熱壁1で
囲んで、断熱壁1と内壁11を貫通して通気バイブ3を
内壁11が囲む空間に開口するように設け、内壁11が
囲む空間内に成形金型MやガラスGを加熱するための抵
抗発熱体4を配設したものである。なお、12.13は
必要に応じて設けられるスペーサで、これらは第4図の
成、形室あるいは第5図の成形室にも用いられるもので
あり、スペーサ12は成形金型M等と同様に出し入れで
きなくてはならないが、スペーサ13は固設してもよい
、この成形室によれば、成形金型MやガラスGを加熱す
る場合、抵抗発熱体4から内壁11の壁面に向かう熱線
があっても熱反射コート10で反射されて結局は成形金
型Mに入射するようになるから、内壁11や断熱壁lが
加熱されること少な(、効率的に成形金型MやガラスG
の加熱がなされる。したがって、冷却する場合も容易に
短時間でなされる。このような効果は、雰囲気の対流や
伝導がなくなる真空雰囲気での加熱の場合に一層顕著と
なる。また、真空や不活性ガス雰囲気にする場合は、内
壁11の内部の排気や換気だけで済む、なお、以下の例
についても同様であるが、成形金型Mを黒くしておけば
、加熱効率が一層よくなる。
Metals such as Cr, AI or 5ift, Ti0z,
It is surrounded by an inner wall 11 provided with a heat reflective coating 10 made of metal oxide or fluoride such as Zr0t, CeOx + Taxes + MgF, the outside of the inner wall 11 is surrounded by a heat insulating wall 1, and the heat insulating wall 1 and inner wall 11 are penetrated. A ventilation vibrator 3 is provided so as to open into a space surrounded by an inner wall 11, and a resistance heating element 4 for heating the mold M and glass G is disposed within the space surrounded by the inner wall 11. Note that 12 and 13 are spacers provided as necessary, and these are also used in the molding chamber shown in FIG. 4 or the molding chamber shown in FIG. However, the spacer 13 may be fixedly installed. According to this molding chamber, when heating the mold M or glass G, hot rays from the resistance heating element 4 toward the wall surface of the inner wall 11 Even if there is heat, it is reflected by the heat reflective coating 10 and eventually enters the mold M, so the inner wall 11 and the heat insulating wall L are rarely heated (and the mold M and the glass G are efficiently heated).
is heated. Therefore, cooling can be easily done in a short time. Such an effect becomes more pronounced when heating is performed in a vacuum atmosphere where there is no convection or conduction in the atmosphere. In addition, when creating a vacuum or inert gas atmosphere, only exhausting or ventilation is required inside the inner wall 11.The same applies to the following example, but if the mold M is made black, the heating efficiency will be improved. becomes even better.

第2図の成形室は、石英ガラスやPYJif!Xのよう
な赤外線透過材料から成る側糎14と、熱伝導係数が小
さくて熱膨張係数が側壁14の材料に略等しいセラミッ
クのような材料から成る上、下壁15.16とで成形金
型MやガラスGが入れられる空間を囲み、そして側壁1
4の内面には前述のような熱反射コート10を一部の非
コート部17を除いて設け、下壁16を貫通して通気バ
イブ3を側壁14と上、下壁15、16で囲む空間に開
口するように設けて、上。
The molding chamber shown in Figure 2 is made of quartz glass and PYJif! A mold is formed by a side glue 14 made of an infrared transparent material such as X, and upper and lower walls 15 and 16 made of a material such as ceramic, which has a small thermal conductivity coefficient and a coefficient of thermal expansion approximately equal to the material of the side wall 14. Surround the space where M and glass G can be placed, and side wall 1
A heat reflective coating 10 as described above is provided on the inner surface of the 4 except for a part of the non-coated portion 17, and a space is formed by penetrating the lower wall 16 and surrounding the ventilation vibrator 3 with the side wall 14 and upper and lower walls 15 and 16. Place it so that it opens at the top.

下壁15.16の取外し可能部分6.7に抵抗発熱体4
を成形金型Mの上、下型の心部凹所内に突出するように
設けたものである。この成形室によっても、第1図の成
形室によると同様の効果が得られる。また、この成形室
によれば、側壁14の非コート部17を通して室外に出
る赤外線をパイロメータPで検出して成形金型Mを温度
を知ることができる。この成形室で成形金型Mを加熱し
乍らブレス成形する場合は、上、下型と上、下壁15.
16の取外し可能部分6.7とを一体的に移動させるよ
うにすればよい。
Resistive heating element 4 in the removable part 6.7 of the lower wall 15.16
are provided so as to protrude into the center recesses of the upper and lower molds of the molding die M. This molding chamber also provides the same effect as the molding chamber shown in FIG. Further, according to this molding chamber, the temperature of the molding die M can be determined by detecting infrared rays emitted to the outside through the uncoated portion 17 of the side wall 14 with the pyrometer P. When press molding is performed while heating the mold M in this molding chamber, the upper and lower molds and the upper and lower walls 15.
16 and the removable portion 6.7 may be moved together.

なお、第2図の例は、上、下壁15.16が熱線も反射
する材料から成るから、上、下壁15.16には熱反射
コートを設けていないが、上、下壁15.16の内面に
も熱反射コートを設けるようにしてもよいことは勿論で
ある。また、熱反射コート10を側壁14の内面に設け
る代わりに、外面に設けてもはゾ同様の効果が得られる
。そして、外面に設ける方が蒸着等による熱反射コート
の形成が一般的に容易である。
In the example of FIG. 2, the upper and lower walls 15.16 are made of a material that also reflects heat rays, so no heat reflective coating is provided on the upper and lower walls 15.16, but the upper and lower walls 15.16 are not provided with a heat reflective coating. Of course, a heat reflective coating may also be provided on the inner surface of 16. Furthermore, the same effect can be obtained by providing the heat reflective coating 10 on the outer surface of the side wall 14 instead of on the inner surface. Generally, it is easier to form a heat reflective coat by vapor deposition or the like if it is provided on the outer surface.

第3図の成形室は、側壁14の内側に同様の赤外線透過
材料から成る衝立壁18を設けている点が第2図の成形
室と異なるだけである。この衝立壁1Bは、雰囲気の対
流あるいはさらに伝導による電熱を防止するものである
。したがって、第3図の成形室は、特に不活性ガスまた
は空気雰囲気での加熱に好ましく用いられる。なお、第
3図のような衝立壁18を設けた場合は、衝立壁18の
内面または外面に熱反射コートを施して、側壁14の熱
反射コ−)10を省略するようにもできる。
The molding chamber shown in FIG. 3 differs from the molding chamber shown in FIG. 2 only in that a screen wall 18 made of a similar infrared transparent material is provided inside the side wall 14. This screen wall 1B prevents electric heating due to atmospheric convection or conduction. Therefore, the molding chamber shown in FIG. 3 is particularly preferably used for heating in an inert gas or air atmosphere. In addition, when the screen wall 18 as shown in FIG. 3 is provided, the heat reflecting coat 10 of the side wall 14 can be omitted by applying a heat reflective coat to the inner or outer surface of the screen wall 18.

〔発明の効果〕〔Effect of the invention〕

以上詳述したように、本発明のガラス成形機においては
、成形金型やガラスの加熱、冷却が効率よく行われて、
加熱やプレス成形の雰囲気を真空や不活性ガス雰囲気と
するのも容易に短時間で行うことができると言う優れた
効果が得られる。
As detailed above, in the glass molding machine of the present invention, heating and cooling of the mold and glass are performed efficiently,
An excellent effect can be obtained in that the atmosphere for heating and press molding can be changed to a vacuum or inert gas atmosphere easily and in a short time.

【図面の簡単な説明】[Brief explanation of the drawing]

第1〜3図はそれぞれ本発明ガラス成形機の成形室部分
断面図、第4.5図はそれぞれ従来のガラス成形機の成
形室部分断面図である。 1・・・断熱壁、    2・・・外壁、3・・・通気
バイブ、  4・・・抵抗発熱体、5.6.7・・・取
外し可能部分、 8・・・誘導加熱コイル、9・・・内容器、10・・・
熱反射コート、 11内壁、12゜ 13・・・スペーサ、 14・・・側壁、 15゜ 16・・・上。 下壁、 17・・・非コート部、 18・・・衝立壁。 第1 図 第2図 ぢ
1 to 3 are partial cross-sectional views of the molding chamber of the glass molding machine of the present invention, and FIG. 4.5 is a partial cross-sectional view of the molding chamber of the conventional glass molding machine. DESCRIPTION OF SYMBOLS 1... Heat insulation wall, 2... Outer wall, 3... Ventilation vibrator, 4... Resistance heating element, 5.6.7... Removable part, 8... Induction heating coil, 9... ...Inner container, 10...
Heat reflective coat, 11 inner wall, 12° 13... spacer, 14... side wall, 15° 16... top. Lower wall, 17... Non-coated portion, 18... Screen wall. Figure 1 Figure 2

Claims (2)

【特許請求の範囲】[Claims] (1)成形金型が入れられる成形室を備えたガラス光学
素子等の成形機において、成形室の内壁面または成形室
の壁が赤外線透過材料から成るときは内壁面もしくは外
壁面に熱反射コートを設けたことを特徴とするガラス成
形機。
(1) In a molding machine for glass optical elements, etc., which is equipped with a molding chamber into which a molding die is placed, if the inner wall surface of the molding chamber or the wall of the molding chamber is made of an infrared transmitting material, the inner wall surface or outer wall surface is coated with a heat reflective coating. A glass forming machine characterized by being equipped with.
(2)成形室の壁が赤外線透過材料から成るとき、その
壁面の一部を除いて熱反射コートが設けられていて、そ
の壁の熱反射コートが設けられていない部分を通して室
外に出る赤外線によって室内の成形金型温度を検知する
ようにした特許請求の範囲第1項記載のガラス成形機。
(2) When the walls of the molding chamber are made of an infrared-transmitting material, a heat-reflecting coating is provided on all but a portion of the wall surface, and the infrared rays that exit the room through the portions of the wall that are not provided with the heat-reflecting coating The glass molding machine according to claim 1, wherein the temperature of the mold inside the room is detected.
JP17695488A 1988-07-18 1988-07-18 Glass molding machine Pending JPH0226839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17695488A JPH0226839A (en) 1988-07-18 1988-07-18 Glass molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17695488A JPH0226839A (en) 1988-07-18 1988-07-18 Glass molding machine

Publications (1)

Publication Number Publication Date
JPH0226839A true JPH0226839A (en) 1990-01-29

Family

ID=16022624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17695488A Pending JPH0226839A (en) 1988-07-18 1988-07-18 Glass molding machine

Country Status (1)

Country Link
JP (1) JPH0226839A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001226128A (en) * 2000-02-15 2001-08-21 Toshiba Mach Co Ltd Optical element forming device
JP2011042547A (en) * 2009-08-24 2011-03-03 Olympus Corp Optical element molding device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001226128A (en) * 2000-02-15 2001-08-21 Toshiba Mach Co Ltd Optical element forming device
JP2011042547A (en) * 2009-08-24 2011-03-03 Olympus Corp Optical element molding device

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