JP2003048723A - Press forming method and press formed equipment - Google Patents
Press forming method and press formed equipmentInfo
- Publication number
- JP2003048723A JP2003048723A JP2001237659A JP2001237659A JP2003048723A JP 2003048723 A JP2003048723 A JP 2003048723A JP 2001237659 A JP2001237659 A JP 2001237659A JP 2001237659 A JP2001237659 A JP 2001237659A JP 2003048723 A JP2003048723 A JP 2003048723A
- Authority
- JP
- Japan
- Prior art keywords
- press
- molding
- molding method
- mold
- press molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- 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
- C03B11/084—Construction of plunger or mould for making solid articles, e.g. lenses material composition or material properties of press dies therefor
- C03B11/086—Construction of plunger or mould for making solid articles, e.g. lenses material composition or material properties of press dies therefor of coated dies
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/02—Press-mould materials
- C03B2215/08—Coated press-mould dies
- C03B2215/14—Die top coat materials, e.g. materials for the glass-contacting layers
- C03B2215/16—Metals or alloys, e.g. Ni-P, Ni-B, amorphous metals
- C03B2215/17—Metals or alloys, e.g. Ni-P, Ni-B, amorphous metals comprising one or more of the noble meals, i.e. Ag, Au, platinum group metals
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2215/00—Press-moulding glass
- C03B2215/02—Press-mould materials
- C03B2215/08—Coated press-mould dies
- C03B2215/30—Intermediate layers, e.g. graded zone of base/top material
- C03B2215/32—Intermediate layers, e.g. graded zone of base/top material of metallic or silicon material
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、Ｔｅ（テルル）を
１０ｍｏｌ％以上含有するガラスをプレスして、レン
ズ、プリズム等の光学素子の成形をおこなうのに適した
プレス成形方法及びプレス成形装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press-molding method and a press-molding apparatus suitable for molding optical elements such as lenses and prisms by pressing glass containing 10 mol% or more of Te (tellurium). It is a thing.
【０００２】[0002]
【従来の技術】レンズやプリズム等の光学素子を製作す
る方法として、加熱軟化したガラスを型でプレス成形す
る方法がある。このようなプレス成形おいて成形型は、
高温下でプレスをおこなうための耐熱性や、ガラスとの
融着を防止する離型性や、光学素子を成形する場合は鏡
面性などが要求される。2. Description of the Related Art As a method of manufacturing an optical element such as a lens or a prism, there is a method of press-molding heat-softened glass with a mold. In such press molding, the mold is
It is required to have heat resistance for pressing at high temperature, releasability to prevent fusion with glass, and specularity when molding an optical element.
【０００３】そのため、成形型の母材である超硬に、Ｐ
ｔなどの貴金属系の保護コートをしたものや、ＳｉＣ、
Ｓｉ３Ｎ４、Ａｌ２Ｏ３などのセラミックからなる成形
型を使って、成形する方法がおこなわれている。Therefore, the cemented carbide that is the base material of the molding die is
Those with a protective coating of noble metal such as t, SiC,
A molding method using a molding die made of ceramics such as Si 3 N 4 and Al 2 O 3 is performed.
【０００４】更に、型の寿命をのばすために、プレスす
るガラスの種類によって、最適な型材料を選択すること
も、又必要となる。ここで、従来、Ｔｅ（テルル）を１
０ｍｏｌ％以上含有するガラスを成形する場合は、超硬
の母材の成形面にＰｔを主成分とするコーティングを施
した成形型が使われていた。Furthermore, in order to extend the life of the mold, it is also necessary to select the optimum mold material depending on the type of glass to be pressed. Here, conventionally, Te (tellurium) is 1
In the case of molding glass containing 0 mol% or more, a molding die in which a molding surface of a cemented carbide base material is coated with Pt as a main component has been used.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、Ｔｅ
（テルル）を１０ｍｏｌ％以上含有するガラスをプレス
成形する場合、Ｐｔを主成分とするコーティングが施さ
れた型を用いると、成形を繰り返すうちにガラスとＰｔ
が反応するという現象が生じる。その結果、高温下で繰
り返しプレスをおこなうと、徐々にガラスと接する型の
表面が荒れてきたり、ガラスが型表面に付着して、最終
的には型が成形に使えなくなってしまい、早期に型を取
り替えなければならないという問題が生じる。[Problems to be Solved by the Invention] However, Te
When press-molding a glass containing (tellurium) in an amount of 10 mol% or more, if a mold having a coating containing Pt as a main component is used, the glass and the Pt are repeatedly formed during repeated molding.
The phenomenon of reacting occurs. As a result, when repeatedly pressing at high temperature, the surface of the mold that comes into contact with the glass gradually becomes rough, and the glass adheres to the surface of the mold, eventually making the mold unusable for molding, and the mold becomes early. The problem of having to replace
【０００６】本発明は、かかる従来技術の問題点に鑑み
てなされたものであり、特定のガラス素材をプレス成形
する場合でも、型の寿命を延長させることが出来るプレ
ス成形装置及びプレス成形装置を提供することを目的と
する。The present invention has been made in view of the above problems of the prior art, and provides a press molding apparatus and a press molding apparatus capable of extending the life of a mold even when a specific glass material is press molded. The purpose is to provide.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載のプレス
成形方法は、成形面の表面層に金を主成分とする材料を
膜状に形成した成形型を用いて、Ｔｅ（テルル）を１０
ｍｏｌ％以上含有するガラス素材をプレス成形すること
を特徴とする。即ち、本発明者らは、Ｔｅと反応しにく
い金の特性に着目し、これを利用することで、従来のご
とく白金を用いたプレス成形に比べ、成形型の寿命を大
幅に延長出来ることを見い出したのである。According to a first aspect of the present invention, there is provided a press molding method in which Te (tellurium) is formed by using a molding die having a film-like material having gold as a main component formed on a surface layer of a molding surface. 10
It is characterized in that a glass material containing at least mol% is press-molded. That is, the inventors of the present invention pay attention to the characteristics of gold, which does not easily react with Te, and by utilizing this, the life of the molding die can be significantly extended as compared with the conventional press molding using platinum. I found it.
【０００８】請求項２に記載のプレス成形方法におい
て、前記表面層は、金の含有量が６０〜１００ｗｔ％で
あると、Ｔｅ（テルル）を１０ｍｏｌ％以上含有するガ
ラス素材をプレス成形する場合における、成形型の損傷
をより効果的に抑制できる。In the press-molding method according to claim 2, when the surface layer has a gold content of 60 to 100 wt%, a glass material containing 10 mol% or more of Te (tellurium) is press-molded. The damage to the mold can be suppressed more effectively.
【０００９】請求項３に記載のプレス成形方法におい
て、前記表面層は、金の含有量が９９〜１００ｗｔ％で
あると、Ｔｅ（テルル）を１０ｍｏｌ％以上含有するガ
ラス素材をプレス成形する場合における、成形型の損傷
をより効果的に抑制できる。In the press-molding method according to claim 3, when the surface layer has a gold content of 99 to 100 wt%, a glass material containing 10 mol% or more of Te (tellurium) is press-molded. The damage to the mold can be suppressed more effectively.
【００１０】請求項４に記載のプレス成形方法におい
て、前記表面層の膜厚が、０．０３〜１μｍであると、
高精度な成形を行え且つ型の損傷を抑制できる。In the press molding method according to claim 4, wherein the surface layer has a thickness of 0.03 to 1 μm,
Highly accurate molding can be performed and damage to the mold can be suppressed.
【００１１】請求項５に記載のプレス成形方法におい
て、前記成形型の母材が、ＷＣ（タングステン・カーバ
イト）を主成分とする超硬であると、耐熱性が高くプレ
ス成形に用いるのに好ましい。In the press-molding method according to claim 5, when the base material of the mold is cemented carbide containing WC (tungsten carbide) as a main component, it has high heat resistance and is used for press-molding. preferable.
【００１２】請求項６に記載のプレス成型方法におい
て、前記成形型の母材が、セラミックスであると、耐熱
性が高くプレス成形に用いるのに好ましい。In the press-molding method according to the sixth aspect, it is preferable that the base material of the mold is ceramics, which has high heat resistance and is used for press-molding.
【００１３】請求項７に記載のプレス成形方法におい
て、前記セラミックスが、ＳｉＣ、ＣＶＤ−ＳｉＣ、Ａ
ｌ２Ｏ３、Ｓｉ３Ｎ４を主成分とすると好ましい。In the press molding method according to claim 7, the ceramics are SiC, CVD-SiC, A.
It is preferable to use 1 2 O 3 and Si 3 N 4 as main components.
【００１４】請求項８に記載のプレス成形方法におい
て、前記成形型において母材と表面層の間に、クロム
（Ｃｒ）、タングステン（Ｗ）、コバルト（Ｃｏ）、白
金（Ｐｔ）、イリジウム（Ｉｒ）、ニッケル（Ｎｉ）、
チタン（Ｔｉ）、モリブデン（Ｍｏ）、ルテニウム（Ｒ
ｕ）、ロジウム（Ｒｈ）、パラジウム（Ｐｄ）、ハフニ
ウム（Ｈｆ）、タンタル（Ｔａ）、レニウム（Ｒｅ）、
オスミウム（Ｏｓ）のうち少なくとも１種類からなる中
間層を設けると、表面層の密着性を高めることができる
の好ましい。In the press-molding method according to claim 8, chromium (Cr), tungsten (W), cobalt (Co), platinum (Pt), iridium (Ir) is provided between the base material and the surface layer in the molding die. ), Nickel (Ni),
Titanium (Ti), molybdenum (Mo), ruthenium (R
u), rhodium (Rh), palladium (Pd), hafnium (Hf), tantalum (Ta), rhenium (Re),
Providing an intermediate layer made of at least one of osmium (Os) is preferable because the adhesion of the surface layer can be enhanced.
【００１５】請求項９に記載のプレス成形装置は、上述
した本発明のプレス成形方法に用いる成形型を備えてな
るので、かかる成形型の寿命を大幅に延長することが出
来る。Since the press molding apparatus according to the ninth aspect comprises the molding die used in the above-described press molding method of the present invention, the life of the molding die can be greatly extended.
【００１６】[0016]
【発明の実施の形態】以下、図面を参照して本発明の実
施の形態を説明する。図１は、本発明の実施の形態にか
かるプレス成形装置の断面図である。このプレス成形装
置は、レンズ等の光学素子を成形するためのもので、上
下成形型１，２と、上下成形型１，２の周囲に配置され
て、上下成形型１，２が摺動自在に嵌合する胴型３と、
上成形型１を保持する上型固定部材４と、下成形型２を
保持する下型固定部材５と、上成形型１の上端に当接す
るスペーサ８と、下成形型２の下端に当接するスペーサ
９とから構成されている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a press molding apparatus according to an embodiment of the present invention. This press molding device is for molding an optical element such as a lens, and is arranged around the upper and lower molds 1 and 2 and the upper and lower molds 1 and 2, and the upper and lower molds 1 and 2 are slidable. A body mold 3 fitted to
An upper die fixing member 4 that holds the upper die 1, a lower die fixing member 5 that holds the lower die 2, a spacer 8 that abuts the upper end of the upper die 1, and a lower end that abuts the lower die 2. It is composed of a spacer 9.
【００１７】（実施例）上下成形型１，２の対向する面
が、ガラス素材（プリフォーム）をプレス成形する成形
面になっている。型の材料は超硬であるがセラミックで
も良い。上下成形型１，２の成形面は、ガラス素材をプ
レスする面をダイヤモンド砥石で研削し、設計形状に対
して、ＰＶ値で０．１μｍ以下の精度で、光学面として
仕上げている。また、表面粗さはＲａで０．０１μｍ以
下である。(Example) The facing surfaces of the upper and lower molding dies 1 and 2 are molding surfaces for press-molding a glass material (preform). The material of the mold is super hard, but it may be ceramic. The molding surfaces of the upper and lower molding dies 1 and 2 are obtained by grinding the surfaces for pressing the glass material with a diamond grindstone and finishing them as optical surfaces with a precision of 0.1 μm or less in PV value with respect to the designed shape. The surface roughness Ra is 0.01 μm or less.
【００１８】図１では誇張して描いているが、この成形
面に、膜の密着性を向上させるために、中間層１ａ、２
ａとしてクロムを０．０５μｍ成膜し、さらにガラスと
接触する表面層１ｂ、２ｂとして金を０．３μｍ成膜し
ている。成膜は蒸着によりおこない、膜の密着性を向上
させるために、型は２００℃に加熱した。成膜後の形状
精度はＰＶ値で０．１μｍ以下、表面粗さはＲａで０．
０１μｍ以下であり、光学素子を成形しても問題のない
状態だった。本実施例では、蒸着により金薄膜を形成し
たが、スパッタ法などで成膜してもよい。Although exaggerated in FIG. 1, in order to improve the adhesiveness of the film, the intermediate layers 1a and 2 are formed on the molding surface.
Chromium is deposited to a thickness of 0.05 μm as a, and gold is deposited to a thickness of 0.3 μm as surface layers 1b and 2b which are in contact with glass. Film formation was performed by vapor deposition, and the mold was heated to 200 ° C. in order to improve the adhesion of the film. The shape accuracy after film formation is 0.1 μm or less in PV value, and the surface roughness Ra is 0.
It was not more than 01 μm, and there was no problem even if the optical element was molded. Although the gold thin film is formed by vapor deposition in this embodiment, it may be formed by a sputtering method or the like.
【００１９】次に、このようにして製作した成形型１，
２を組み込んだプレス成形装置を用いて、実際にＴｅ
（テルル）を１０ｍｏｌ％以上含有するガラス光学素子
を成形した。尚、成形すべきガラスは、ＴｅＯ２、Ｂ２
Ｏ３およびＡｌ２Ｏ３を主構成成分としている。Next, the molding die 1, manufactured in this way,
2 using a press molding machine incorporating 2
A glass optical element containing 10 mol% or more of (tellurium) was molded. The glass to be formed is TeO 2 , B 2
O 3 and Al 2 O 3 are main constituent components.
【００２０】図１において、かかるガラスの球状プリフ
ォームが下成形型２上に載置されている。プリフォーム
の数ミリ上に上成形型１が対向配置され、上下成形型
１，２を案内する胴型３の周囲に配置された高周波加熱
コイル７によって、胴型３が高周波加熱され、その熱が
上下成形型１，２に伝導してプリフォームが加熱され
る。この時の加熱温度は３８０℃である。加熱開始から
所定時間経過してプリフォームが軟化した時点でプレス
速度０．１ｍｍ／秒、圧力５００Ｎ、保持時間３０秒で
プレスを行った。その後、３００℃まで徐冷し、３００
℃〜２００℃まで徐冷の２倍の勾配で冷却した後、型か
ら取り出した。In FIG. 1, such a glass spherical preform is placed on a lower mold 2. The upper molding die 1 is arranged so as to face the preform several millimeters above, and the high-frequency heating coil 7 arranged around the body mold 3 that guides the upper and lower molding dies 1 and 2 heats the body mold 3 by high-frequency heating. Is conducted to the upper and lower molds 1 and 2 to heat the preform. The heating temperature at this time is 380 ° C. When the preform softened after a lapse of a predetermined time from the start of heating, pressing was performed at a pressing speed of 0.1 mm / sec, a pressure of 500 N and a holding time of 30 sec. Then, slowly cool to 300 ° C
After cooling from 0 ° C to 200 ° C with a gradient twice that of slow cooling, the product was removed from the mold.
【００２１】Ｔｅ（テルル）を１０ｍｏｌ％以上含有す
るガラスは、線膨張係数が約１４０×１０−６と大き
く、通常の光学ガラスの２倍近いので、冷却時に割れが
起きやすい。よって、徐冷には、十分時間をかける必要
がある。Glass containing 10 mol% or more of Te (tellurium) has a large linear expansion coefficient of about 140 × 10 −6, which is almost twice as large as that of ordinary optical glass, and therefore cracks easily occur during cooling. Therefore, it is necessary to take sufficient time for the slow cooling.
【００２２】このようにして、成形を繰り返しおこなっ
たが、５０００ショット成形して、型表面の劣化は生じ
なかった。また、ガラスと型との融着はわずかにあった
が、数〜１０数μｍ程度の非常に小さなもので、レンズ
性能に影響をおよぼすものではなかった。Molding was repeated in this manner, but the mold surface was not deteriorated after 5000 shots were molded. Further, although there was a slight fusion between the glass and the mold, it was a very small amount of about several to several tens of μm and did not affect the lens performance.
【００２３】Ｔｅ（テルル）を１０ｍｏｌ％以上含有す
るガラスの主構成成分としては、上述のＴｅＯ２−Ｂ２
Ｏ３−Ａｌ２Ｏ３系に限らず、ＴｅＯ２−Ｎｂ２Ｏ
５系、ＴｅＯ２−ＧｅＯ２−Ｂ２Ｏ３系、ＴｅＯ２−Ｂ
ａＯ−Ｐ２Ｏ５系、ＴｅＯ２−ＧｅＯ２−ＢａＯ−Ｐ２
Ｏ５系でも、型表面の劣化やガラスと型との融着はほと
んど生じなかった。The main constituent component of the glass containing Te (tellurium) in an amount of 10 mol% or more is TeO 2 -B 2 mentioned above.
O 3 is not limited to the -Al 2 O 3 system, TeO 2 -Nb 2 O
5 system, TeO 2 —GeO 2 —B 2 O 3 system, TeO 2 —B
aO-P 2 O 5 system, TeO 2 -GeO 2 -BaO-P 2
Even with the O 5 type, almost no deterioration of the mold surface or fusion between the glass and the mold occurred.
【００２４】[0024]
【発明の効果】以上のように本発明によれば、成形型の
表面に金コーティングを施すことで、Ｔｅ（テルル）を
１０ｍｏｌ％以上含有するガラスのプレス成形におい
て、型表面の劣化がなく、ガラスと型との融着もほとん
ど抑制できる。よって、表面状態の良好な光学素子が得
られる。As described above, according to the present invention, by coating the surface of the mold with gold, there is no deterioration of the mold surface in press molding of glass containing 10 mol% or more of Te (tellurium). Almost no fusion between the glass and the mold can be suppressed. Therefore, an optical element having a good surface condition can be obtained.
【図１】本発明の実施の形態にかかるプレス成形装置の
断面図である。FIG. 1 is a cross-sectional view of a press molding apparatus according to an embodiment of the present invention.
１ 上成形型 ２ 下成形型 ３ 胴型 ４ 上型固定部材 ５ 下型固定部材 ６ ガラス素材 ７ 高周波加熱コイル 1 Upper mold 2 Lower mold 3 body type 4 Upper die fixing member 5 Lower die fixing member 6 glass material 7 High frequency heating coil
Claims (9)
を膜状に形成した成形型を用いて、Ｔｅを１０ｍｏｌ％
以上含有するガラス素材をプレス成形することを特徴と
するプレス成形方法。1. A molding die having a film-like material having a main component of gold formed on the surface layer of the molding surface, and using 10 mol% of Te.
A press-molding method comprising press-molding the glass material containing the above.
０ｗｔ％であることを特徴とする請求項１に記載のプレ
ス成形方法。2. The surface layer has a gold content of 60 to 10.
It is 0 wt%, The press molding method of Claim 1 characterized by the above-mentioned.
０ｗｔ％であることを特徴とする請求項１に記載のプレ
ス成形方法。3. The surface layer has a gold content of 99 to 10.
It is 0 wt%, The press molding method of Claim 1 characterized by the above-mentioned.
であることを特徴とする請求項１〜３のいずれかに記載
のプレス成形方法。4. The thickness of the surface layer is 0.03 to 1 μm.
The press molding method according to any one of claims 1 to 3, wherein
る超硬であることを特徴とする請求項１〜４のいずれか
に記載のプレス成形方法。5. The press molding method according to claim 1, wherein the base material of the molding die is cemented carbide containing WC as a main component.
ることを特徴とする請求項１〜４のいずれかに記載のプ
レス成形方法。6. The press molding method according to claim 1, wherein the base material of the molding die is ceramics.
ＳｉＣ、Ａｌ２Ｏ３、Ｓｉ３Ｎ４を主成分とすることを
特徴とする請求項６に記載のプレス成形方法。7. The ceramic is SiC, CVD-
The press molding method according to claim 6, wherein SiC, Al 2 O 3 , and Si 3 N 4 are main components.
に、クロム、タングステン、コバルト、白金、イリジウ
ム、ニッケル、チタン、モリブデン、ルテニウム、ロジ
ウム、パラジウム、ハフニウム、タンタル、レニウム、
オスミウムのうち少なくとも１種類からなる中間層を設
けることを特徴とする請求項１〜７のいずれかに記載の
プレス成形方法。8. The molding die, between the base material and the surface layer, chromium, tungsten, cobalt, platinum, iridium, nickel, titanium, molybdenum, ruthenium, rhodium, palladium, hafnium, tantalum, rhenium,
The press molding method according to claim 1, wherein an intermediate layer made of at least one of osmium is provided.
成形方法に用いる成形型を備えたことを特徴とするプレ
ス成形装置。9. A press molding apparatus comprising a molding die used in the press molding method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001237659A JP2003048723A (en) | 2001-08-06 | 2001-08-06 | Press forming method and press formed equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001237659A JP2003048723A (en) | 2001-08-06 | 2001-08-06 | Press forming method and press formed equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003048723A true JP2003048723A (en) | 2003-02-21 |
Family
ID=19068700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001237659A Pending JP2003048723A (en) | 2001-08-06 | 2001-08-06 | Press forming method and press formed equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003048723A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006129618A1 (en) * | 2005-05-30 | 2006-12-07 | Asahi Glass Company, Limited | Method for manufacturing optical glass element |
| WO2008126645A1 (en) * | 2007-04-10 | 2008-10-23 | Toshiba Kikai Kabushiki Kaisha | Glass forming mold and method for producing the same |
| US8206518B2 (en) | 2005-06-24 | 2012-06-26 | Toshiba Kakai Kabushiki Kaisha | Die for press forming of glass and manufacturing method thereof |
-
2001
- 2001-08-06 JP JP2001237659A patent/JP2003048723A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006129618A1 (en) * | 2005-05-30 | 2006-12-07 | Asahi Glass Company, Limited | Method for manufacturing optical glass element |
| US7666332B2 (en) | 2005-05-30 | 2010-02-23 | Asahi Glass Company, Limited | Process for producing optical glass element |
| US8206518B2 (en) | 2005-06-24 | 2012-06-26 | Toshiba Kakai Kabushiki Kaisha | Die for press forming of glass and manufacturing method thereof |
| WO2008126645A1 (en) * | 2007-04-10 | 2008-10-23 | Toshiba Kikai Kabushiki Kaisha | Glass forming mold and method for producing the same |
| US7966845B2 (en) | 2007-04-10 | 2011-06-28 | Toshiba Kikai Kabushiki Kaisha | Glass-shaping mold and method for manufacturing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR900000622B1 (en) | Method for forming of optical glass element | |
| JPH05297210A (en) | Metal mold for forming diffraction grating and manufacture thereof, and diffraction grating and manufacture thereof | |
| JP4690100B2 (en) | Mold for glass optical element and method for manufacturing glass optical element | |
| JPH06199530A (en) | Press molding die for optical glass element and production of optical glass element using the same | |
| JP2003048723A (en) | Press forming method and press formed equipment | |
| JP2001302273A (en) | Mold for molding optical glass element | |
| JP2001302260A (en) | Method for molding optical element | |
| JP2004059368A (en) | Molding die and method of manufacturing molding die | |
| JP3185299B2 (en) | Glass lens molding die and glass lens molding device | |
| JPH11268920A (en) | Forming mold for forming optical element and its production | |
| JP2002274867A (en) | Optical glass element press forming die and optical glass element | |
| JP3653957B2 (en) | Press mold | |
| JP2004352584A (en) | Mold for shaping and its manufacturing method | |
| JP2001322830A (en) | Press forming method for glass optical element and glass optical element formed by the same | |
| JP2003146690A (en) | Mold for forming glass substrate, method of manufacturing the same and method of forming glass substrate | |
| JP2004210550A (en) | Molding mold | |
| JPH09194216A (en) | Die for forming optical element | |
| JP2007137724A (en) | Glass-made mold | |
| JP2006124214A (en) | Method of molding optical device and die for molding optical device | |
| JPH0710561A (en) | Die for molding optical device | |
| JP2000191330A (en) | Die for forming optical element and formation of same | |
| JPH04238823A (en) | Press-forming mold | |
| JP2000185926A (en) | Mold for molding glass optical device, molding method and optical device thus molded | |
| JP2964367B2 (en) | Mold for optical element molding | |
| JPS60180926A (en) | Mold for press-molding highly accurate glass molded article |