WO1993022130A1 - Method of correcting the shape of thermoset resin lens for spectacles and support tool for shape correction in said method - Google Patents
Method of correcting the shape of thermoset resin lens for spectacles and support tool for shape correction in said method Download PDFInfo
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- WO1993022130A1 WO1993022130A1 PCT/JP1993/000538 JP9300538W WO9322130A1 WO 1993022130 A1 WO1993022130 A1 WO 1993022130A1 JP 9300538 W JP9300538 W JP 9300538W WO 9322130 A1 WO9322130 A1 WO 9322130A1
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- lens
- spectacles
- support
- shaping
- shape
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/04—Bending or folding of plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—Lenses
Definitions
- thermosetting resin lens for eyeglasses and shaping support used in the method
- the present invention relates to a method for shaping a thermosetting resin lens for eyeglasses (hereinafter referred to as a lens), and more particularly to a lens deformed in a process after molding.
- the present invention relates to a method of correcting a lens and a support used for the method.
- the lens has a meniscus shape, and it is customary that the eye surface is concave and the astigmatic power is increased. Because of that, Circumferential ridges must be shaped so that they do not exist on the same plane. This state will be described with reference to FIG. 3 to make it easier to understand.
- a cross section cut at a 90 ° angle along the light Wi passing through the center of the lens is shown.
- the circumferential ridge line 13 of the objective surface 4 is on the same plane ⁇ , and the thickness t is not constant because the astigmatic power is set based on the objective surface.
- the ridge line 1 2 of the eye surface 7 Cannot exist in the same plane.
- the lens was grounded on a flat surface with the concave surface of the lens facing down, from the viewpoint of preventing dust adhesion, etc., but in this case, the concave surface was created.
- the ridgeline at the circumference of the eye surface does not touch the entire circumference, and when heated at a temperature higher than the glass transition point, the ridgeline will follow the grounding surface due to its own weight. Deform . As a result, a concave astigmatism shape appears on the convex objective surface.
- a lens mold for the object plane is used to make the lens adhere to the lens (for example, see Japanese Patent Application Laid-Open No. 4-41). 229) has also been proposed.
- this method positioning on the mold to correct the aspherical lens is difficult, and the method is difficult to use.
- New problems arise, such as the occurrence of surface defects due to dust adhesion on the lens surface.
- the object of the present invention is to provide a simple method capable of correcting deformation of a lens generated during a heat treatment process within an allowable range in optical performance and shape, and a support tool therefor. The point is.
- the lens objective surface is directed downward, and the circumferential surface of the lens objective surface is received by the support surface having the same plane, and the lens resin is applied to the lens. Temperature above the glass transition point! ?
- the lens's own weight causes the circumference of the objective surface of the lens to be flush with the plane.
- the shaping support used in the above-mentioned method includes a cylindrical pedestal and an object surface molding mode fitted inside the pedestal. The concave spherical surface of the mold is used as the lens support surface, and the support surface is smaller than the radius of curvature formed by the lens objective surface.
- the shaping support used in the above method comprises a cylinder and a shoulder provided on the inner upper edge of the cylinder, and the shoulder serves as a support surface.
- FIG. 1 is a cross-sectional view showing one embodiment of the shaping support of the present invention.
- FIG. 2 is a cross-sectional view showing another embodiment of the shaping support of the present invention.
- FIG. 3 is a cross-sectional perspective view cut along a 90 ° angle along the optical axis passing through the center of the lens.
- FIG. 1 is a cross-sectional view of an embodiment of the support of the present invention, and shows a state where a lens is placed.
- Reference numeral 1 denotes a support, and an object surface forming mold 5 is fitted on a cylindrical pedestal 6 for stabilizing the same.
- 2 is the spherical surface of the molding surface for molding the objective surface
- 3 is the lens
- 4 is the objective surface
- the pair of rotating shafts It has a nominal surface
- 7 is the eye surface and has a rotationally symmetric surface or a tric or cylindrical surface.
- the radius of curvature of the spherical surface 2 of the mold is smaller than that of the objective surface 4 of the lens, and the radius of curvature is configured so that the portion other than the circumference of the objective surface 4 is not always in contact with the ground. ing .
- the lens 3 When the lens 3 is placed on the support surface on the spherical surface 2 as shown in FIG. It is as described above that the ridge lines 12 are not on the same plane. For this reason, when heating in the final heat treatment step of lens molding, if the lens is placed on a flat surface with the eye facing side 7 down, if it exceeds the glass transition point of the lens The lens softens and the non-contact circumferential portion of the eye surface 7 moves in the direction of the plane, so that the lens also has an effect on the objective surface, and as a result, the lens is not used for eyeglasses. If used, the optical performance or appearance will be impaired.
- the circumference of the objective surface 4 of the lens is in close contact with the mold spherical surface 2 all around. Absent.
- the ambient temperature is maintained for about 2 hours at about 20 ° C higher than the glass transition temperature of the resin used, the lens softens and the objective weight is reduced by its own weight. The circumference of the surface comes into contact with the spherical surface 2 of the lens. The original shape is corrected.
- FIG. 2 is a cross-sectional view of a support 8 showing another embodiment.
- a cut is made in the upper inside of the cylinder 9 to make the shoulder 10.
- the shoulder 10 is preferably provided on the same plane, and the width of the shoulder is preferably within 1 mm. In this example, the width was 0.5 mm.
- the situation in which the shaping correction is performed is the same as in the embodiment shown in FIG.
- the slit 11 should be pressed for 2-3 times so that it is easy to put a finger between the one end of the cylinder 9 and the shoulder 10. Has been established.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A method of easily correcting the shape of a thermoset resin lens for spectacles which is deformed and deviated from the preset forming standards when the lens undergoes various heating processes after the lens is formed. In this method, with the objective lens surface of the thermoset resin lens (3) for spectacles directed downward, the circumferential portion of the object lens surface (4) is received by a supporting surface having a uniform plane, and the lens is exposed to a temperature atmosphere above the glass transition point of the lens resin for a suitable period of time, so that the circumferential portion of the object lens surface of the lens can be formed into a uniform planar shape due to the gravity of the lens, with the stresses in the interior and the exterior of the lens removed.
Description
明 細 書 眼鏡用 熱硬化性樹脂 レ ン ズ の 整形 方法及 び 該方法 に 用 い る 整形用 支持具 Description: Shaping method of thermosetting resin lens for eyeglasses and shaping support used in the method
[技術分野 ] 本発明 は 、 眼鏡用 熱硬化性樹脂 レ ン ズ (以下 に お い て レ ン ズ と い う ) の 整形方法 に 関 し 、 詳 し く は成形後 の 工程で 変形 し た レ ン ズ の 修正の方法 と 該方法 に 用 、 る 支持具 に 係 わ る も の で あ る 。 [Technical Field] The present invention relates to a method for shaping a thermosetting resin lens for eyeglasses (hereinafter referred to as a lens), and more particularly to a lens deformed in a process after molding. The present invention relates to a method of correcting a lens and a support used for the method.
[背景技術 ] 近年 に な っ て素材開発が進 み、 レ ン ズ の屈 折率 の 向上 を 目 的 と し た樹脂が開発 さ れ て い る が 、 素材的 に は耐熱性 に 欠 け る き ら い の あ る も の も 商品 化 さ れ て き て い る 。 一般 に レ ン ズ は種 々 の加熱工程を経て製品 と な る が、 こ の よ う な 素材 を用 い て レ ン ズ を成形す る 際 、 そ の 過程 に お い て そ の レ ン ズ用 樹脂固有 の ガ ラ ス 転移点温度を上回 る 熱 に よ つ て 成形後の レ ン ズ を加熱す る 場合が あ る 。 レ ン ズ は そ の 自 重 お よ び外部応力 に よ っ て変形す る こ と が あ る 。 そ の 結果、 所定の 光学性能や外観上で著 し い 欠点 を 引 き 起 こ す こ と に な る 。 従来 の充分 に 耐熱性 の あ る レ ン ズ樹脂 に お い て は 、 そ の よ う な 変 化量 は 軽微で あ り 、 レ ン ズ の光学性能や形状 に 大 き く 影響を及 ぼす も の で は な か っ た 。 し 力、 し な 力く ら 、 レ ン ズ は メ ニ ス カ ス 形状 を し て お り 、 対 眼面が凹面で かつ 乱視度数をつ け る こ と が通例で あ る 。 そ の た め 、 対 眼面 の
円周部稜線は同一平面上に存在 し な い よ う な形状を と ら ざ る を得な い。 この状態を分 り やす く す る ため に 図 3 を用 い て説明す る 。 レ ン ズの中心部を通る 光 Wiに添 っ て 9 0 ° 角 に切開 し た断面を示 し てい る 。 対物面 4 の円周 部稜線 1 3 は同一平面內に あ り 、 対物面を基準に乱視度数をつ けた た め に厚さ t は一定でな く 、 結果、 対眼面 7 の稜線 1 2 は、 同一平面内に存在 し えな く な る。 そ し て、 塵埃付着防止な どの観点か ら生産に際 し ては レ ンズの凹面を下方に し て平 面上に接地 さ せていたが、 こ の よ う にす る と 凹面すなわ ち 対眼面の 円周部の稜線が全周接地 しない こ と にな り 、 ガラ ス転移点以上の温度で加熱 さ れる と、 自重に よ っ て、 こ の 稜線は接地面に添う よ う に変形する 。 こ の結果凹面の乱視 形状が凸面の対物面へ現れて し ま う 。 [Background Art] In recent years, material development has been progressing, and resins aiming at improving the refractive index of lenses have been developed, but the material lacks heat resistance. Some things that are brilliant have also been commercialized. Generally, a lens is manufactured through various heating processes, but when a lens is formed using such a material, the lens is in the process of forming the lens. In some cases, the lens after molding may be heated by heat exceeding the glass transition point temperature specific to the resin used. The lens may be deformed by its own weight and external stress. This can lead to significant shortcomings in certain optical performance and appearance. For conventional sufficiently heat-resistant lens resins, such changes are minor and have a significant effect on the optical performance and shape of the lens. It was not a thing. The lens has a meniscus shape, and it is customary that the eye surface is concave and the astigmatic power is increased. Because of that, Circumferential ridges must be shaped so that they do not exist on the same plane. This state will be described with reference to FIG. 3 to make it easier to understand. A cross section cut at a 90 ° angle along the light Wi passing through the center of the lens is shown. The circumferential ridge line 13 of the objective surface 4 is on the same plane 、, and the thickness t is not constant because the astigmatic power is set based on the objective surface. As a result, the ridge line 1 2 of the eye surface 7 Cannot exist in the same plane. In production, the lens was grounded on a flat surface with the concave surface of the lens facing down, from the viewpoint of preventing dust adhesion, etc., but in this case, the concave surface was created. The ridgeline at the circumference of the eye surface does not touch the entire circumference, and when heated at a temperature higher than the glass transition point, the ridgeline will follow the grounding surface due to its own weight. Deform . As a result, a concave astigmatism shape appears on the convex objective surface.
こ の よ う な レ ン ズの変形を防止す る ため に対物面用 レ ン ズモ ール ドを-使用 して こ れに密着さ せる よ う な方法 (例え ば特開平 4 — 4 1 2 2 9 号) も提案 さ れて い る 。 し 力、 し な が ら 、 こ の方法で は、 非球面形状 レ ン ズの修正の た め にモ 一ル ドに乗せ る場合、 位置決めが困難であ る こ と や、 モ ー ル ドゃ レ ンズ面上の塵埃付着に よ る 表面不良発生な ど新た な 問題が生ずる 。 In order to prevent such deformation of the lens, a lens mold for the object plane is used to make the lens adhere to the lens (for example, see Japanese Patent Application Laid-Open No. 4-41). 229) has also been proposed. However, in this method, positioning on the mold to correct the aspherical lens is difficult, and the method is difficult to use. New problems arise, such as the occurrence of surface defects due to dust adhesion on the lens surface.
[発明 の開示〗 本発明の 目 的 は、 加熱処理ェ程で発生 した レ ン ズの変形 を光学性能及び形状におい て許容範囲内に修正可能な簡便 な方法と そ の ための支持具を提供す る 点にあ る 。 DISCLOSURE OF THE INVENTION The object of the present invention is to provide a simple method capable of correcting deformation of a lens generated during a heat treatment process within an allowable range in optical performance and shape, and a support tool therefor. The point is.
本発明は、 レ ン ズの対物面を下方に し て、 同一平面を も つ支持面で レ ン ズ対物面の 円周部を受け、 レ ン ズ榭脂のガ
ラ ス転移点以上の温度!?囲気内 に適宜時間放置す る こ と で レ ン ズの 内部及び外部の応力 を解放 し つつ 、 レ ン ズ の 自 重 に よ つ て、 レ ン ズ の対物面円周部を同一平面状 に 形成 さ せ 更 に 、 上記方法に用 い る 整形用支持具 と し て、 円筒状台 座 と 該台座内側に嵌設 さ れて い る 対物面成形用 モ ー ル ドか ら な り 、 該モ ー ル ド の 凹状球面部を レ ン ズ の支持面 と し 、 該支持面が レ ン ズ の対物面がなす曲率半径よ り 小 さ い構成 と す る In the present invention, the lens objective surface is directed downward, and the circumferential surface of the lens objective surface is received by the support surface having the same plane, and the lens resin is applied to the lens. Temperature above the glass transition point! ? By leaving the lens inside and outside for an appropriate period of time to release the internal and external stresses of the lens, the lens's own weight causes the circumference of the objective surface of the lens to be flush with the plane. In addition, the shaping support used in the above-mentioned method includes a cylindrical pedestal and an object surface molding mode fitted inside the pedestal. The concave spherical surface of the mold is used as the lens support surface, and the support surface is smaller than the radius of curvature formed by the lens objective surface.
又、 上記方法に用 い る 整形用支持具 と し て、 円筒 と 該円 筒 の 内側上縁部に設け た肩部か ら な り 、 該肩部を支持面 と す な 構成 と す る 。 In addition, the shaping support used in the above method comprises a cylinder and a shoulder provided on the inner upper edge of the cylinder, and the shoulder serves as a support surface.
[図面の簡単な 説明 ] 図 1 は、 本発明の整形用支持具の一実施例を示す断面図 図 2 は、 本発明 の整形用 支持具の他の実施例を示す断面 図、 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing one embodiment of the shaping support of the present invention. FIG. 2 is a cross-sectional view showing another embodiment of the shaping support of the present invention.
図 3 は、 レ ン ズの 中心部を通 る 光軸 に 添 っ て 9 0 ° 角 に 切開 し た断面斜視図であ る 。 FIG. 3 is a cross-sectional perspective view cut along a 90 ° angle along the optical axis passing through the center of the lens.
[発明 を実施す る た め の最良の形態 ] 図 1 は、 本発明支持具の一実施例 の断面図であ っ て レ ン ズを載置 し た状態を示 し て い る 。 1 は支持具で あ り 、 対物 面成形用 モ ー ル ド 5 が そ れを安定 さ せ る た めの 円筒状台座 6 に嵌設 さ れて い る 。 2 は対物面成形用 モ ー ル ド の球面部 で あ り 、 3 は レ ン ズで あ り 、 4 はそ の対物面で、 回転軸対
称曲面を有 し てお り 、 7 は対眼面であ り 、 回転軸対称曲面 も し く は、 ト ー リ ッ ク 又ばシ リ ン ド リ カ ル面を有 し て い る 。 モ ー ル ドの球面 2 の曲率半径は レ ン ズの対物面 4 の そ れ よ り 小さ く 、 常に対物面 4 の 円周部以外は接地 し な い よ う な 曲率半径の関係に構成 されてい る 。 レ ンズ 3 の外径に対 し てモール ド 5 の外径はやや大 き めであ る ため に設置す る 位 置が多少ずれ る こ と があ っ て も 、 変形整形後、 モ ー ル ドの 球面 2 が球面であ る こ と に よ り レ ン ズ対物面 4 の 円周部全 て におい てモ一ノレ ド 5 の球面 2 の同一平面上で支え る こ と がで き る 。 台座 6 はモ ー ル ド.を安定さ せ る ため の段部 6 a を設けてお り 、 加熱処理に充分耐え得る 樹脂 も し く は金属 な どを素材と し てい る 。 BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 is a cross-sectional view of an embodiment of the support of the present invention, and shows a state where a lens is placed. Reference numeral 1 denotes a support, and an object surface forming mold 5 is fitted on a cylindrical pedestal 6 for stabilizing the same. 2 is the spherical surface of the molding surface for molding the objective surface, 3 is the lens, 4 is the objective surface, and the pair of rotating shafts. It has a nominal surface, 7 is the eye surface and has a rotationally symmetric surface or a tric or cylindrical surface. The radius of curvature of the spherical surface 2 of the mold is smaller than that of the objective surface 4 of the lens, and the radius of curvature is configured so that the portion other than the circumference of the objective surface 4 is not always in contact with the ground. ing . After the deforming and shaping, even if the installation position may be slightly different because the outer diameter of the mold 5 is slightly larger than the outer diameter of the lens 3, Since the spherical surface 2 of the lens 5 is a spherical surface, the entire spherical surface of the lens objective surface 4 can be supported on the same plane as the spherical surface 2 of the monolith 5. The pedestal 6 is provided with a stepped portion 6a for stabilizing the mold, and is made of a resin or metal that can sufficiently withstand heat treatment.
次に そ の作用を説明する 。 図 1 の よ う に レ ンズ 3 を球面 2 上の支持面に載置 し た場合 レ ンズの対眼面 7 は乱視度数 を生 じせ し め る 曲面であ るが、 該面の 円周部の稜線 1 2 が 同一平面上に な い こ と は既述 し た通 り であ る 。 こ の た め に レ ン ズ成形の最終熱処理工程で加熱する 際、 レ ン ズの対眼 面 7 を下に し て平面上に置い た場合、 レ ン ズの ガラ ス転移 点を超え る と レ ン ズ は軟化 して対眼面 7 の未接触円周部分 がそ の平面方向 に動 く の で、 対物面に も そ の影響を及ぼ し, そ の結果、 こ の ま ま 眼鏡用 と して使用す る と光学性能あ る い は外観を損な う こ と にな る 。 Next, the operation will be described. When the lens 3 is placed on the support surface on the spherical surface 2 as shown in FIG. It is as described above that the ridge lines 12 are not on the same plane. For this reason, when heating in the final heat treatment step of lens molding, if the lens is placed on a flat surface with the eye facing side 7 down, if it exceeds the glass transition point of the lens The lens softens and the non-contact circumferential portion of the eye surface 7 moves in the direction of the plane, so that the lens also has an effect on the objective surface, and as a result, the lens is not used for eyeglasses. If used, the optical performance or appearance will be impaired.
そ こ で こ の変形 した レ ン ズを図 1 の よ う に支持具 1 に載 置する と レ ンズの対物面 4 の 円周部はモ一ル ドの球面 2 と は全周密着は し な い。 実施例 と して雰囲気温度を、 使用 し た樹脂の ガ ラ ス転移点温度よ り 約 2 0 °C程度高め に 2 時間 維持す る と、 レ ンズは軟化 して、 その 自重に よ り 対物面の 円周部はモ一ノレ ドの球面 2 に接す る よ う にな り レ ン ズ 3 は
原形に整形補正 さ れ る 。 Then, when the deformed lens is placed on the support 1 as shown in Fig. 1, the circumference of the objective surface 4 of the lens is in close contact with the mold spherical surface 2 all around. Absent. As an example, when the ambient temperature is maintained for about 2 hours at about 20 ° C higher than the glass transition temperature of the resin used, the lens softens and the objective weight is reduced by its own weight. The circumference of the surface comes into contact with the spherical surface 2 of the lens. The original shape is corrected.
図 2 は、 他の実施例を示す支持具 8 の断面図であ る 。 円 筒 9 の 内側上緣部に切 り 込み を入れ肩部 1 0 と す る 。 肩部 1 0 は、 同一平面上 に設け肩の幅は 1 m m 以内が好 ま し く 、 本実施例で は 0 . 5 m m と し た。 整形補正す る 状況 は図 1 で示す実施例 と 同様であ る 。 な お、 レ ン ズ 3 の着脱を容易 にす る た め に 、 円筒 9 の一端力、 ら 肩部 1 0 の 間 に指を添え やすい よ う に ス リ ッ ト 1 1 を 2 〜 3 力 所設け て い る 。 FIG. 2 is a cross-sectional view of a support 8 showing another embodiment. A cut is made in the upper inside of the cylinder 9 to make the shoulder 10. The shoulder 10 is preferably provided on the same plane, and the width of the shoulder is preferably within 1 mm. In this example, the width was 0.5 mm. The situation in which the shaping correction is performed is the same as in the embodiment shown in FIG. In order to make the attachment and detachment of the lens 3 easy, the slit 11 should be pressed for 2-3 times so that it is easy to put a finger between the one end of the cylinder 9 and the shoulder 10. Has been established.
[産業上の利用可能性 ] 本発明 の整形方法 と そ の支持具を用 いれば、 レ ン ズ成形 後の熱処理工程、 例え ばハ ー ド コ ー テ ィ ン グ、 ァニ 一 リ ン グ、 染色な どに て形状が変形 し た 場合円周部は も と よ り そ れ以外の形状を ご く 軽微な変化量に 抑え て、 レ ン ズの光学 性能や形状特性を成形時の それに近づけ る よ う に整形補正 を効果的 に行 う こ と がで き 、 不良率を低減 し て生産効率の 向上に大 き く 貢献す る も の であ る 。
[Industrial applicability] If the shaping method of the present invention and its support are used, a heat treatment step after lens molding, for example, hard coating, annealing However, when the shape is deformed due to dyeing, etc., the other part of the circumference is kept to a very small amount to change the optical performance and shape characteristics of the lens to those at the time of molding. Shaping correction can be performed effectively as close as possible, greatly contributing to the improvement of production efficiency by reducing the defect rate.
Claims
請 求 の 範 囲 し 眼鏡用熱硬.ィヒ性樹脂 レ ン ズ (以下 レ ン ズと い う ) の 対 物面を下方に し て、 同一平面を も つ支持面で レ ン ズ対物 面の 円周部を受け、 レ ン ズ樹脂の ガラ ス転移点以上の温 度雰囲気内 に適宜時間放置する こ とで、 レ ン ズの内部お よ び外部の応力を解放 しつつ、 レ ン ズ の 自重に よ っ て レ ン ズ の対物面円周部を同一平面伏に形成す る こ と を特徴 とする レ ン ズの整形方法 0 Scope of the request: Heat-hardening spectacles for spectacles. With the opposite surface of the lens (hereinafter referred to as the lens) facing down, the lens objective surface with a support surface having the same plane. By receiving the circumference of the lens and leaving it in a temperature atmosphere above the glass transition point of the lens resin for an appropriate period of time, the lens inside and outside of the lens can be released while releasing the stress. Les emissions shaping how's that for a child Tsu by the of its own weight you form the object plane circumference of Les down's on the same plane facedown characterized the 0
2. 円筒状台座と該台座内側に 眩設さ れてい る 対物面成形 用 モ ー ノレ ド力、 ら な り 、 ¾モ ール ドの 凹状球面部を レ ン ズ の支持面 と し 、 該支持面が レ ンズの対物面がなす曲率半 径よ り 小 さ い構成と した請求項 1 に記載の レ ン ズの整形 方法に用 い る 整形用支持具。 ' 2. A cylindrical pedestal and a monolithic force for forming an object surface, which is dazzled inside the pedestal, are formed. The concave spherical portion of the mold is used as a lens support surface. The shaping support used in the lens shaping method according to claim 1, wherein the support surface has a configuration smaller than a radius of curvature formed by an objective surface of the lens. '
3. 円筒 と該円筒の 内側上緣部 に設けた肩部か ら な り 、 該 肩部を支持面 と す る構成 と し た請求項 1 に記載の レ ン ズ の整形方法に用い る整形甩支持具。
3. The lens shaping method according to claim 1, wherein the lens shaping method comprises a cylinder and a shoulder provided on an upper inside portion of the cylinder, and the shoulder is used as a support surface.甩 Support tools.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10761092A JP2909573B2 (en) | 1992-04-27 | 1992-04-27 | Method for producing thermosetting resin lens for spectacles and shaping support used in the method |
JP4/107610 | 1992-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993022130A1 true WO1993022130A1 (en) | 1993-11-11 |
Family
ID=14463541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/000538 WO1993022130A1 (en) | 1992-04-27 | 1993-04-26 | Method of correcting the shape of thermoset resin lens for spectacles and support tool for shape correction in said method |
Country Status (2)
Country | Link |
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JP (1) | JP2909573B2 (en) |
WO (1) | WO1993022130A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5897675A (en) * | 1996-04-26 | 1999-04-27 | Degussa Aktiengesellschaft | Cerium oxide-metal/metalloid oxide mixture |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009014086A1 (en) * | 2007-07-25 | 2009-01-29 | Hoya Corporation | Method for producing plastic lens |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749526A (en) * | 1980-09-08 | 1982-03-23 | Olympus Optical Co Ltd | Molding and correction of plastic lens |
JPS57115321A (en) * | 1981-01-07 | 1982-07-17 | Hitachi Ltd | Annealing method for plastic lense |
JPH0441229A (en) * | 1990-06-06 | 1992-02-12 | Asahi Optical Co Ltd | Method for shaping plastic thin-wall lens |
-
1992
- 1992-04-27 JP JP10761092A patent/JP2909573B2/en not_active Expired - Fee Related
-
1993
- 1993-04-26 WO PCT/JP1993/000538 patent/WO1993022130A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749526A (en) * | 1980-09-08 | 1982-03-23 | Olympus Optical Co Ltd | Molding and correction of plastic lens |
JPS57115321A (en) * | 1981-01-07 | 1982-07-17 | Hitachi Ltd | Annealing method for plastic lense |
JPH0441229A (en) * | 1990-06-06 | 1992-02-12 | Asahi Optical Co Ltd | Method for shaping plastic thin-wall lens |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5897675A (en) * | 1996-04-26 | 1999-04-27 | Degussa Aktiengesellschaft | Cerium oxide-metal/metalloid oxide mixture |
Also Published As
Publication number | Publication date |
---|---|
JP2909573B2 (en) | 1999-06-23 |
JPH05303001A (en) | 1993-11-16 |
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