JPH05178627A - Die for forming glass lens - Google Patents

Die for forming glass lens

Info

Publication number
JPH05178627A
JPH05178627A JP34735591A JP34735591A JPH05178627A JP H05178627 A JPH05178627 A JP H05178627A JP 34735591 A JP34735591 A JP 34735591A JP 34735591 A JP34735591 A JP 34735591A JP H05178627 A JPH05178627 A JP H05178627A
Authority
JP
Japan
Prior art keywords
layer
sic
base material
die
glass lens
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
Application number
JP34735591A
Other languages
Japanese (ja)
Other versions
JP3185299B2 (en
Inventor
Minoru Matsuoka
実 松岡
Keiji Iwana
圭史 岩名
Masaki Ando
正樹 安藤
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP34735591A priority Critical patent/JP3185299B2/en
Publication of JPH05178627A publication Critical patent/JPH05178627A/en
Application granted granted Critical
Publication of JP3185299B2 publication Critical patent/JP3185299B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • C03B2215/10—Die base materials
    • C03B2215/11—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
    • C03B2215/10—Die base materials
    • C03B2215/12—Ceramics or cermets, e.g. cemented WC, Al2O3 or TiC
    • 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
    • C03B2215/34—Intermediate layers, e.g. graded zone of base/top material of ceramic or cermet material, e.g. diamond-like carbon

Abstract

PURPOSE:To prolong service life and to enhance reliability by forming an intermediate layer of beta-SiC and a surface layer of Ir on the forming face of the base material of a die made of a Co-contg. sintered hard alloy or sintered SiC. CONSTITUTION:A beta-SiC layer 2 of 500-700mum thickness as an intermediate layer is formed by thermo-CVD on the forming face of the base material 1 of a die made of a Co-contg. sintered hard alloy or an SiC sintered body and the thickness of the layer 2 is regulated to 300-500mm by mirror finishing. The layer 2 is then coated with an Ir layer 3 of about 1-3mum thickness as a surface layer by magnetron sputtering. Surface roughening due to the diffusion of Co is inhibited and a die for forming a glass lens having a long service life and high reliability is obtd.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、例えば光学ガラスレン
ズの直接プレス成形用の型に適用して好適なガラスレン
ズ成形用型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass lens molding die suitable for application to, for example, a die for direct press molding of an optical glass lens.

【０００２】[0002]

【従来の技術】従来、光学ガラスレンズは、光学機器の
レンズ構成の簡略化とレンズ部分の軽量化の両方を同時
に達成し得る非球面化の傾向がある。この非球面レンズ
の製造には、従来の光学レンズ製造方法である光学研磨
法では、加工性及び量産性に劣り、直接プレス成形法が
有望視されている。2. Description of the Related Art Conventionally, an optical glass lens has a tendency to be aspherical, which can achieve both simplification of the lens structure of an optical device and weight reduction of the lens portion at the same time. In order to manufacture this aspherical lens, the optical polishing method which is a conventional optical lens manufacturing method is inferior in workability and mass productivity, and a direct press molding method is considered promising.

【０００３】ここで、高精度な光学ガラス素子を直接プ
レスにより成形するためには、成形品品質が良好なこと
が要求される。すなわち、この目的達成のために、型材
料として要求される条件としては、高温におけるガラス
に対する化学作用が最小であり融着等を生じないこと、
成形時の高温下で型面が経時変化による面粗れを起こさ
ないこと、プレス時の衝撃に耐え得る機械的強度を有す
ること、型のガラスプレス面にすり傷などの損傷を受け
にくいこと、熱衝撃による耐破壊性能が高いことなどが
挙げられる。Here, in order to directly form a highly accurate optical glass element by pressing, it is required that the quality of the formed article is good. That is, in order to achieve this object, the conditions required as the mold material, the chemical action on the glass at high temperature is minimal and does not cause fusion, etc.,
Mold surface does not cause surface roughness due to aging at high temperature during molding, has mechanical strength that can withstand impact during pressing, and is less susceptible to damage such as scratches on the glass press surface of the mold, It has high fracture resistance by thermal shock.

【０００４】このようなことから、超硬合金を母材と
し、その上にＰｔ、Ｉｒなどのコーティングを施した成
形用型が提案されている。Under these circumstances, there has been proposed a molding die in which a cemented carbide is used as a base material and a coating of Pt, Ir or the like is applied thereon.

【発明が解決しようとする課題】しかしながら、上述し
た従来のガラスレンズ成形用型、すなわち、超硬合金を
母材とし、その上にＰｔ、Ｉｒなどのコーティングを施
した成形用型は、高温においてプレス回数を重ねて行く
と、超硬合金のマトリックスであるＣｏ（コバルト）
が、Ｐｔ、Ｉｒなどのコーティング膜中を拡散してい
き、ついにはＰｔ、Ｉｒ膜面上に達して、面粗れを起こ
したり、ガラスとの反応が発生し、この結果、型の耐久
性が低下するといった問題があった。However, the above-mentioned conventional glass lens molding die, that is, a molding die in which a cemented carbide is used as a base material and a coating of Pt, Ir, or the like is applied thereto, at high temperature. Co (cobalt), which is the matrix of cemented carbide,
However, it diffuses in the coating film of Pt, Ir, etc., and finally reaches the surface of the Pt, Ir film to cause surface roughness or a reaction with glass, resulting in the durability of the mold. There was a problem that it decreased.

【０００５】本発明はこのような課題に鑑みてなされた
ものであり、Ｃｏの拡散による面粗れなどを抑制して、
長寿命、高信頼性のガラスレンズ成形用型を得ることを
目的とする。The present invention has been made in view of these problems, and suppresses surface roughness due to Co diffusion,
The object is to obtain a glass lens molding die having a long life and high reliability.

【０００６】また、Ｃｏの拡散を発生させないで、面粗
れなどを抑制し、長寿命、高信頼性のガラスレンズ成形
用型を得ることを目的とする。It is another object of the present invention to obtain a glass lens molding die having a long life and high reliability by suppressing surface roughness without causing Co diffusion.

【０００７】[0007]

【課題を解決するための手段】本発明のガラスレンズ成
形用型は、例えば、図１に示すように、母材１としてコ
バルトを含む超硬合金、中間層２としてβ−ＳｉＣ層、
及び表面層３としてイリジウム層を有するものである。As shown in FIG. 1, a glass lens molding die of the present invention comprises a cemented carbide containing cobalt as a base material 1, a β-SiC layer as an intermediate layer 2,
And an iridium layer as the surface layer 3.

【０００８】また、本発明のガラスレンズ成形用型は、
例えば、図１に示すように、母材１として焼結ＳｉＣ、
中間層２としてβ−ＳｉＣ層、及び表面層３としてイリ
ジウム層を有するものである。The glass lens molding die of the present invention comprises:
For example, as shown in FIG. 1, as the base material 1, sintered SiC,
The intermediate layer 2 has a β-SiC layer, and the surface layer 3 has an iridium layer.

【０００９】[0009]

【作用】本発明のガラスレンズ成形用型によれば、母材
１としてコバルトを含む超硬合金、中間層２としてβ−
ＳｉＣ層、及び表面層３としてイリジウム層を有するこ
とにより、Ｃｏの拡散による面粗れなどが抑制され、長
寿命、高信頼性のガラスプレス用成形型が得られる。According to the glass lens molding die of the present invention, the base material 1 is a cemented carbide containing cobalt, and the intermediate layer 2 is β-.
By including the SiC layer and the iridium layer as the surface layer 3, surface roughness due to Co diffusion is suppressed, and a long-life and highly reliable glass press mold can be obtained.

【００１０】また、本発明のガラスレンズ成形用型によ
れば、母材１として焼結ＳｉＣ、中間層２としてβ−Ｓ
ｉＣ層、及び表面層３としてイリジウム層を有すること
により、Ｃｏの拡散が発生せず、面粗れなどが抑制さ
れ、長寿命、高信頼性のガラスプレス用成形型が得られ
る。According to the glass lens molding die of the present invention, sintered SiC is used as the base material 1 and β-S is used as the intermediate layer 2.
By having the iC layer and the iridium layer as the surface layer 3, Co diffusion does not occur, surface roughness and the like are suppressed, and a long-life and highly reliable mold for glass press is obtained.

【００１１】[0011]

【実施例】以下、本発明のガラスレンズ成形用型の実施
例について図１〜図２を参照して説明する。EXAMPLES Examples of the glass lens molding die of the present invention will be described below with reference to FIGS.

【００１２】図１は、本例による型部材を示す概略断面
図である。本図において１は型の母材を示し、２は該型
母材の成形面に形成された熱ＣＶＤ法によるβ−ＳｉＣ
層を示す。本例においては、型母材とししては、例えば
超硬合金や焼結ＳｉＣを用いることができる。３は最表
面のＩｒ被膜であり、マグネトロンスパッタ法などによ
り形成される。β−ＳｉＣ層２は、５００〜７００μｍ
コートした後に、最終形状に高精度研削、研磨により鏡
面仕上げされ、最終的に３００〜５００μｍの厚みとな
る。また、Ｉｒ層３は、形状精度を実質上損なわない程
度の厚み（１〜３μｍ）である。この型を図２に示すよ
うにセットして、ＳｉＯ2 が６８重量％、Ｂ2 Ｏ3 が１
１重量％、Ｎａ2 Ｏが１０重量％、Ｋ2 Ｏが８重量％及
び残りが微量成分からなるホウケイ酸アルカリ系光学ガ
ラス６をプレスして両凸レンズのレンズ形状に成形し
た。この際、プレスは、Ｎ2 雰囲気中で行う。型温度８
００℃にして、プレス圧力４０ｋｇ／ｃｍ2 でプレス成
形を行い、そのまま４００℃以下まで型と共に冷却して
成形物を取り出した。プレスは、１０００回まで繰り返
し、表面粗さのＲａ（ＪＩＳ Ｂ０６０１参照）をプレ
ス前、１００回、１０００回で測定し、さらにガラスの
融着性についても目視評価した。その結果を表１に示
す。FIG. 1 is a schematic sectional view showing a mold member according to this embodiment. In this figure, 1 indicates a base material of a mold, and 2 indicates β-SiC formed on a molding surface of the mold base material by a thermal CVD method.
The layers are shown. In this example, as the die base material, for example, cemented carbide or sintered SiC can be used. 3 is an Ir film on the outermost surface, which is formed by a magnetron sputtering method or the like. β-SiC layer 2 is 500 to 700 μm
After coating, the final shape is mirror-finished by high-precision grinding and polishing, and the final thickness is 300 to 500 μm. Further, the Ir layer 3 has a thickness (1 to 3 μm) that does not substantially impair the shape accuracy. This mold was set as shown in FIG. 2, and SiO 2 was 68% by weight and B 2 O 3 was 1%.
Alkaline borosilicate optical glass 6 containing 1% by weight, 10% by weight of Na 2 O, 8% by weight of K 2 O and the balance of trace components was pressed to form a biconvex lens. At this time, the pressing is performed in an N 2 atmosphere. Mold temperature 8
Press molding was carried out at a temperature of 00 ° C. and a pressing pressure of 40 kg / cm 2 , and the molded product was taken out by cooling it together with the mold to 400 ° C. or less. The pressing was repeated up to 1000 times, and the surface roughness Ra (see JIS B0601) was measured 100 times and 1000 times before pressing, and the fusability of glass was visually evaluated. The results are shown in Table 1.

【００１３】[0013]

【表１】 [Table 1]

【００１４】サンプル１は、母材として超硬合金（ＷＣ
−Ｃｏ）を用い、中間層はＣＶＤ−ＳｉＣ層とし、表面
層はＩｒ層とした。また、母材を焼結ＳｉＣに変えて同
様に行った結果を表１のサンプル２に示した。また、比
較例として、中間層のない場合を表１のサンプル３に、
超硬合金母材のみを表１のサンプル４に、サンプル２で
Ｉｒ層のないものを表１のサンプル５に、サンプル２の
中間層のない場合を表１のサンプル６に、さらに、サン
プル１の表面層をＰｔに変えた場合を表１のサンプル７
に示した。Sample 1 is a cemented carbide (WC
-Co) was used, the intermediate layer was a CVD-SiC layer, and the surface layer was an Ir layer. In addition, the result obtained by performing the same operation by changing the base material to sintered SiC is shown in Sample 2 of Table 1. In addition, as a comparative example, the case without the intermediate layer is shown in Sample 3 of Table 1,
Only the cemented carbide base material is sample 4 in Table 1, sample 2 without Ir layer is sample 5 in table 1, sample 2 without intermediate layer is sample 6 in table 1, and further sample 1 The case where the surface layer of is changed to Pt is sample 7 in Table 1.
It was shown to.

【００１５】表１に示したように、本例のサンプル１、
サンプル２は、１０００回プレス後でも表面粗さは変化
しておらず、離型性についても良好であった。一方、中
間層のないサンプル３は、Ｃｏの拡散のため、面粗れを
起こしており、離型性にも問題があった。サンプル４の
超硬合金（ＷＣ−Ｃｏ）のみの場合は、面粗れ、離型性
ともに最も悪いレベルであった。焼結ＳｉＣを母材にＣ
ＶＤ−ＳｉＣのみをコーティングしたものは、面粗れは
ないが、離型製に問題があった。また、焼結ＳｉＣに直
接Ｉｒをコーティングした場合、焼結ＳｉＣがポーラス
なため、鏡面加工性に劣り、充分に平滑な面が得られ
ず、さらにその上にＩｒをコーティングしても下地の表
面粗さを反映し、充分な成形品が得られない。また、サ
ンプル１において、Ｉｒの代わりにＰｔをコーティング
した場合、Ｃｏの拡散はないものの、若干、表面が白濁
し、表面粗度が劣化した。これについては、Ｐｔの融点
（１７６９℃）がＩｒの融点（２４４３℃）に比べ著し
く低いことにより、Ｐｔの方が粒成長を起こしやすいの
ではないかと考えられる。表１の結果から、本例の光学
レンズ成形型は、従来の超硬合金を母材にＰｔ、Ｉｒな
どの貴金属コーティングをしたものに比べて、表面性の
劣化がなく、離型性にも優れていることから、高精度、
長寿命の点で大きな利点がある。As shown in Table 1, sample 1 of this example,
The surface roughness of Sample 2 was not changed even after pressing 1000 times, and the mold releasability was also good. On the other hand, Sample 3 having no intermediate layer had surface roughness due to Co diffusion and had a problem with releasability. In the case of only the cemented carbide (WC-Co) of Sample 4, the surface roughness and the releasability were at the worst levels. Sintered SiC as the base material for C
The one coated only with VD-SiC had no surface roughness, but had a problem in mold release. Further, when Ir is directly coated on the sintered SiC, the sintered SiC is porous, so that the mirror surface workability is inferior and a sufficiently smooth surface cannot be obtained. Reflecting the roughness, a sufficient molded product cannot be obtained. When Pt was coated in place of Ir in Sample 1, Co did not diffuse, but the surface was slightly clouded and the surface roughness deteriorated. Regarding this, it is considered that Pt is more likely to cause grain growth because the melting point of Pt (1769 ° C.) is significantly lower than the melting point of Ir (2443 ° C.). From the results of Table 1, the optical lens molding die of this example has no deterioration in surface property and has releasability as compared with a conventional cemented carbide base metal coated with a noble metal such as Pt or Ir. High accuracy, because it is excellent
There is a great advantage in terms of long life.

【００１６】以上の説明からわかるように、本発明は問
題点を解決するために、成形用型の母材として超硬合金
を用い、これを成形すべき光学レンズの押し型に加工
し、その上に均一な厚み（３００〜７００μｍ）でＣＶ
Ｄ法によりβ−ＳｉＣ層を設ける。ＣＶＤ法によるβ−
ＳｉＣは、Ｃｏの拡散係数（１３００℃時）がＳｉ中の
３ｘ１０-5ｃｍ2 ／ｓに比べ１．３ｘ１０-13 ｃｍ2 ／
ｓとけた違いに小さいため、Ｃｏの拡散を充分に抑制す
る効果がある。その後、研削、研磨により最終形状、面
精度に仕上げ、その上にガラスの離型性に優れたＩｒを
コーティングすることによりＣｏの拡散による面粗れな
どが、抑制され、長寿命、高信頼性のガラスプレス用成
形型が得られる。また、母材に焼結ＳｉＣを用いること
も可能であり、この場合は、Ｃｏの拡散は全くない。As can be seen from the above description, in order to solve the problems, the present invention uses a cemented carbide as a base material of a molding die, processes it into a die for an optical lens to be formed, and CV with uniform thickness (300-700 μm) on top
A β-SiC layer is provided by the D method. Β- by CVD method
SiC has a Co diffusion coefficient (at 1300 ° C.) of 1.3 × 10 −13 cm 2 / s as compared with 3 × 10 −5 cm 2 / s in Si.
Since it is as small as s, it has an effect of sufficiently suppressing Co diffusion. After that, the final shape and surface accuracy are finished by grinding and polishing, and the surface roughness due to the diffusion of Co is suppressed by coating Ir with excellent releasability of the glass, long life, high reliability. The molding die for glass press can be obtained. It is also possible to use sintered SiC as the base material, in which case Co does not diffuse at all.

【００１７】なお、本発明は上述の実施例に限らず本発
明の要旨を逸脱することなく種々の構成を採り得ること
はもちろんである。The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various configurations can be adopted without departing from the gist of the present invention.

【００１８】[0018]

【発明の効果】以上説明したように、本発明によれば、
Ｃｏの拡散による面粗れなどが抑制され、長寿命、高信
頼性のガラスプレス用成形型が得られる。As described above, according to the present invention,
Surface roughness due to Co diffusion is suppressed, and a long-life and highly reliable glass press mold can be obtained.

【００１９】また、本発明によれば、Ｃｏの拡散が発生
せず、面粗れなどが抑制され、長寿命、高信頼性のガラ
スプレス用成形型が得られる。Further, according to the present invention, it is possible to obtain a glass press molding die that does not cause Co diffusion, suppresses surface roughness, and has a long life and high reliability.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明のガラスレンズ成形用型の一実施例を示
す構成図である。FIG. 1 is a configuration diagram showing an embodiment of a glass lens molding die of the present invention.

【図２】本発明のガラスレンズ成形用型の一例を用いた
成形機の例を示す構成図である。FIG. 2 is a configuration diagram showing an example of a molding machine using an example of the glass lens molding die of the present invention.

【符号の説明】[Explanation of symbols]

１ 母材（超硬合金または焼結ＳｉＣ） ２ ＣＶＤ−β−ＳｉＣ膜 ３ Ｉｒ膜 ４ 上型 ４ａ Ｉｒ膜 ４ｂ ＣＶＤ−β−ＳｉＣ膜 ５ 下型 ５ａ Ｉｒ膜 ５ｂ ＣＶＤ−β−ＳｉＣ膜 ６ 原料ガラス塊状物 ７ 案内型 ８ 加熱ヒータ 1 Base Material (Cemented Carbide or Sintered SiC) 2 CVD-β-SiC Film 3 Ir Film 4 Upper Mold 4a Ir Film 4b CVD-β-SiC Film 5 Lower Mold 5a Ir Film 5b CVD-β-SiC Film 6 Raw Material Glass block 7 Guide type 8 Heater

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 母材としてコバルトを含む超硬合金、中
間層としてβ−ＳｉＣ層、及び表面層としてイリジウム
層を有することを特徴とするガラスレンズ成形用型。1. A glass lens molding die comprising a cemented carbide containing cobalt as a base material, a β-SiC layer as an intermediate layer, and an iridium layer as a surface layer. 【請求項２】 母材として焼結ＳｉＣ、中間層としてβ
−ＳｉＣ層、及び表面層としてイリジウム層を有するこ
とを特徴とするガラスレンズ成形用型。2. Sintered SiC as a base material and β as an intermediate layer
-A glass lens molding die having an SiC layer and an iridium layer as a surface layer.
JP34735591A 1991-12-27 1991-12-27 Glass lens molding die and glass lens molding device Expired - Fee Related JP3185299B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34735591A JP3185299B2 (en) 1991-12-27 1991-12-27 Glass lens molding die and glass lens molding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34735591A JP3185299B2 (en) 1991-12-27 1991-12-27 Glass lens molding die and glass lens molding device

Publications (2)

Publication Number Publication Date
JPH05178627A true JPH05178627A (en) 1993-07-20
JP3185299B2 JP3185299B2 (en) 2001-07-09

Family

ID=18389667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34735591A Expired - Fee Related JP3185299B2 (en) 1991-12-27 1991-12-27 Glass lens molding die and glass lens molding device

Country Status (1)

Country Link
JP (1) JP3185299B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113526961A (en) * 2021-08-19 2021-10-22 南通三责精密陶瓷有限公司 Manufacturing method of silicon carbide mold for glass molding and silicon carbide mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113526961A (en) * 2021-08-19 2021-10-22 南通三责精密陶瓷有限公司 Manufacturing method of silicon carbide mold for glass molding and silicon carbide mold

Also Published As

Publication number Publication date
JP3185299B2 (en) 2001-07-09

Similar Documents

Publication Publication Date Title
KR900002704B1 (en) Elements and a molding method using the same
US20060141093A1 (en) Composite mold and method for making the same
JP3206845B2 (en) Method for producing optical glass element and press mold for optical glass element used in the method
JP3185299B2 (en) Glass lens molding die and glass lens molding device
US20060201205A1 (en) Mold for molding optical lenses
JPS62202824A (en) Production of pressed lens
JP4669775B2 (en) Optical glass element mold
US20090001619A1 (en) Optical glass forming mold and method for press-forming optical glass using such optical glass forming mold
JPH11268920A (en) Forming mold for forming optical element and its production
JP2009073693A (en) Optical element-molding die, and method for producing the same
JP2785888B2 (en) Mold for optical element molding
JPH1036128A (en) Mold for optical element
JP2003048723A (en) Press forming method and press formed equipment
JP2008120639A (en) Optical glass element shaping mold
JPH09194216A (en) Die for forming optical element
JPH1036127A (en) Mold for optical element and production of the mold
JP2000203851A (en) Mold for forming optical element
JPH04265234A (en) Forming die for optical glass element
JPS63260831A (en) Forming mold for optical element
JP2964367B2 (en) Mold for optical element molding
JPH10194754A (en) Optical device molding die
JP2004210550A (en) Molding mold
JPS6217029A (en) Production of optical glass element
JP4262312B2 (en) Mold for optical glass element
JP2000185926A (en) Mold for molding glass optical device, molding method and optical device thus molded

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees