JPS63112436A - Production of glass lens - Google Patents
Production of glass lensInfo
- Publication number
- JPS63112436A JPS63112436A JP25888186A JP25888186A JPS63112436A JP S63112436 A JPS63112436 A JP S63112436A JP 25888186 A JP25888186 A JP 25888186A JP 25888186 A JP25888186 A JP 25888186A JP S63112436 A JPS63112436 A JP S63112436A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- mold
- sol
- glass lens
- cavity
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000499 gel Substances 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 239000011240 wet gel Substances 0.000 abstract description 2
- 238000013019 agitation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 206010040925 Skin striae Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/12—Other methods of shaping glass by liquid-phase reaction processes
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光記録やプロジェクタ−等に用いられる高精度
のガラスレンズの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a high-precision glass lens used for optical recording, projectors, and the like.
古くからガラスを用いたレンズは研磨加工により作られ
てきた。研磨加工は加工に時間がかかり高価なものにな
りがちであつ几。特に近年光記録やプロジェクタ−等の
高精度ヶ要求されるレンズは研磨加工が面倒でしかも非
球面形状も要求される様になって′ｔ！次。Lenses using glass have been made by polishing for a long time. Polishing takes time and tends to be expensive. Especially in recent years, lenses that require high precision for optical recording, projectors, etc. are not only difficult to polish, but also require aspherical shapes. Next.
これらの要求に対してガラスのプレス成型を行なったり
（オプトロニクスＡ５１．Ｐ７７．１９８６）材質のプ
ラスチック化（工業材料３２巻１１号ｐ１０７）により
対処しようとしている。Efforts are being made to meet these demands by press-molding glass (Optronics A51.P77.1986) and using plastic materials (Kogyo Materials Vol. 32, No. 11, p. 107).
しか−から以上の従来の技術で、特にプラスチックの場
合は光学特性の面で材質に制約があり、又プレス成型の
場合もガラス材質の制約及び形状大きさに限界がある。However, with the above-mentioned conventional techniques, there are restrictions on the material, particularly in the case of plastic, in terms of optical properties, and press molding also has restrictions on the glass material and limitations on the shape and size.
本発明のガラスレンズを農造する方法において。 In the method of producing glass lenses of the present invention.
その成分のゾルを含む溶液をレンズ形状の空腔を持つ型
に注入してゲル化を行なうことを特徴とする。It is characterized by gelation by injecting a solution containing a sol of the component into a mold with a lens-shaped cavity.
水２Ｋｆに塩酸２７′ｆｒ：添加し、二酸化硅素の微粉
末ｔＫＩＩ’ｔ−加えて攪拌し分散させる。十分分散し
たところへエチルシリケート２徐々に加えて加水分解を
行なりゾルを炸裂する。Add 27'fr of hydrochloric acid to 2Kf of water, add tKII't of fine powder of silicon dioxide, and stir to disperse. Ethyl silicate 2 is gradually added to the well-dispersed area to perform hydrolysis and explode the sol.
次に第一図に示す様な型上用意する。型は型Ａ・１と型
Ｂ・２とからなり、型Ｂ・２の内面は径１０譚で曲率３
０ｃＷ１の凹状空腔が形成されている。この空腔３に通
じる様にゾル注入口４が形成されている。先に調整した
ゾル全頁にＰＨ全４とした後、ゾル注入口４より空腔５
内に充填する。５０℃で２４時間の熟成の後、型を分解
してウェットゲル金取り出し、直ちに純水中に浸漬する
。次に上面に微小穴の明いた乾燥容器に移し、６０℃で
１週間の乾燥全行ないドライゲル全得た。このドライゲ
ルを真空炉中で１２５０℃まで徐々に加熱焼底して取り
出した。径５画で曲不１５Ｇの凸レンズが得られ念。本
レンズの熱膨張係数は２×１０ で、屈折率の分布は１
０ 以下であり、歪、脈理等は見られなかつ次。又光透
過率は２００ ｎｍまで９０％以上あった。Next, prepare a mold as shown in Figure 1. The mold consists of mold A.1 and mold B.2, and the inner surface of mold B.2 has a diameter of 10 tan and a curvature of 3.
A concave cavity of 0 cW1 is formed. A sol injection port 4 is formed so as to communicate with this cavity 3. After setting the pH of all pages of the sol to 4 that was previously adjusted, fill the cavity 5 from the sol inlet 4.
Fill inside. After aging at 50° C. for 24 hours, the mold is disassembled and the wet gel gold is taken out and immediately immersed in pure water. Next, the mixture was transferred to a drying container with micro holes in the top surface and dried at 60° C. for one week to obtain a dry gel. This dry gel was gradually heated to 1250° C. in a vacuum furnace and taken out. I hope to be able to obtain a convex lens with a diameter of 5 and a curve of 15G. The thermal expansion coefficient of this lens is 2×10, and the refractive index distribution is 1
0 or less, and no distortions, striae, etc. were observed. Moreover, the light transmittance was 90% or more up to 200 nm.
本実施例では石英ガラスについてのみ記入したが硼酸又
は硼硅酸粉末又はＰ、ｂＯ粉末を使用することにより硼
硅酸ガラス、鉛ガラス等他の多成分についても適用しう
る。又凹レンズや各種のレンズ形状、特に非球面レンズ
等の共作も宕易に行うことができる。In this embodiment, only quartz glass is described, but by using boric acid or borosilicate powder, or P, bO powder, it is also possible to apply to other multi-component materials such as borosilicate glass and lead glass. Furthermore, it is easy to co-produce concave lenses and various lens shapes, especially aspherical lenses.
以上述べた如く本発明によれば非球面レンズ等の従来の
研磨加工では非常に困難であった形状のガラスレンズ全
容易に炸裂することが可能となつｔｏその製造方法は射
出成型に似ているが、射出成型に見られる肉厚部のヒケ
等は生ぜず高精度のレンズが得られた。As described above, according to the present invention, it is possible to easily explode glass lenses of shapes such as aspherical lenses, which are extremely difficult to do with conventional polishing, and the manufacturing method thereof is similar to injection molding. However, a high-precision lens was obtained without the sink marks in the thick parts that are seen with injection molding.
第一図は本発明を実施するゲル化容器の断面図である。 １、型Ａ ２． 型Ｂ Ｓ 空腔 屯 ゾル注入口。 以上 FIG. 1 is a sectional view of a gelling container in which the present invention is implemented. 1. Type A 2. Type B S empty cavity tun sol inlet. that's all
Claims (1)
溶液をレンズ形状の空腔を持つ型に注入してゲル化を行
なうことを特徴とするガラスレンズの製造方法。1. A method for manufacturing a glass lens, which comprises injecting a sol solution of its components into a mold having a lens-shaped cavity to gel it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25888186A JPS63112436A (en) | 1986-10-30 | 1986-10-30 | Production of glass lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25888186A JPS63112436A (en) | 1986-10-30 | 1986-10-30 | Production of glass lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63112436A true JPS63112436A (en) | 1988-05-17 |
Family
ID=17326326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25888186A Pending JPS63112436A (en) | 1986-10-30 | 1986-10-30 | Production of glass lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63112436A (en) |
-
1986
- 1986-10-30 JP JP25888186A patent/JPS63112436A/en active Pending
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