JPS6110034A - Glass press lens and pressing machine therefor - Google Patents

Glass press lens and pressing machine therefor

Info

Publication number
JPS6110034A
JPS6110034A JP13079884A JP13079884A JPS6110034A JP S6110034 A JPS6110034 A JP S6110034A JP 13079884 A JP13079884 A JP 13079884A JP 13079884 A JP13079884 A JP 13079884A JP S6110034 A JPS6110034 A JP S6110034A
Authority
JP
Japan
Prior art keywords
lens
mold
glass press
glass
press 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
JP13079884A
Other languages
Japanese (ja)
Other versions
JPS6310100B2 (en
Inventor
Yoshisuke Matsukawa
松川　善亮
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.)
Olympus Corp
Original Assignee
Olympus Corp
Olympus Optical Co Ltd
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 Olympus Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP13079884A priority Critical patent/JPS6110034A/en
Publication of JPS6110034A publication Critical patent/JPS6110034A/en
Publication of JPS6310100B2 publication Critical patent/JPS6310100B2/ja
Granted 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2215/00—Press-moulding glass
    • C03B2215/76—Pressing whereby some glass overflows unrestrained beyond the press mould in a direction perpendicular to the press axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Lens Barrels (AREA)

Abstract

PURPOSE:When a glass lens is formed by pressing a gob in a compression mold, the periphery of the effective aperture is provided with a part which is regulated by the mold and the rest part which does not undergo any restriction in an open state to keep the thickness of the lens pressed constant. CONSTITUTION:In a glass lens pressing machine, a gap D1 is formed partially along the periphery of the lens openly between male mold 16, female mold 17 and drum mold 18. A lump of softened glass (gob) is pressed with a molding machine consisting of male mold 16, female mold 17 and drum mold 18 to form a lens with a part of the periphery which is regulated by the mold 13 and rest part which is not restricted 14. Thus, glass lenses of constant thickness 11 are formed, even when gobs fluctuate in weights, because excess amounts of gobs are made to flow out of the gap D1.

Description

【発明の詳細な説明】 （技術分野） 本発明は、軟化ガラス塊（ゴブ）から成形型の押圧によ
って成形されるガラスプレスレンズ及びその成形装置に
関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a glass press lens that is molded from a softened glass gob by pressing with a mold, and to an apparatus for molding the same.

（従来技術） 例えば、眼鏡、双眼鏡等に使用されるガラスプレスレン
ズは溶融ガラスを流出口より流して、はぼ均等重量に切
断した塊（ゴブ）を成形装置に供給して製作される。(Prior Art) For example, glass press lenses used for eyeglasses, binoculars, etc. are manufactured by flowing molten glass through an outlet and supplying gobs cut into approximately equal weights to a molding device.

第１（８）及び第２図は、従来のこの種のガラスプレス
レンズの成形装置の一例を示す要部断面図である。図に
おいて、符号１は軟化ガラス塊（ゴブ）。FIGS. 1(8) and 2 are sectional views of essential parts showing an example of a conventional glass press lens molding apparatus of this type. In the figure, numeral 1 is a gob of softened glass.

２は上型、６は下型、４は胴型、５は下型３を突き上げ
る押上杆、６は所定量に裁断されたゴブ１を胴型４に落
し込むゴブシュータ−を夫々示している。上記胴型４は
固定されており、同胴型４に対して上記上型２．下型３
が夫々同一中心軸上において上下動自在に配設されてい
る。そして、第１図の状態、即ち上型２が上方に引上げ
られ、下型３が胴型４内の最低位置にある状態で、ゴブ
シー−ター６から１個のゴブ１が胴型４内に落し込まれ
ると、第２図に示すように、上型２が押し下げられゴブ
１を所定の形状に押圧してガラスプレスレンズ１人を成
形するようになっている。成形加工が完了した後は、上
型２が上方に引き上げられ、次いで下型３を押上杆５に
より突き上げて、成形されてガラスプレスレンズ１人と
なったゴブ１を胴型４より取り出すようＶＣなっている
。Reference numeral 2 designates an upper die, 6 a lower die, 4 a body die, 5 a push-up rod for pushing up the lower die 3, and 6 a gob shooter for dropping the gob 1 cut into a predetermined amount into the body die 4. The body mold 4 is fixed, and the upper mold 2. Lower mold 3
are arranged so as to be vertically movable on the same central axis. Then, in the state shown in FIG. 1, that is, with the upper die 2 being pulled upward and the lower die 3 being at the lowest position in the body die 4, one gob 1 is inserted into the body die 4 from the gob seater 6. When the gob is dropped, as shown in FIG. 2, the upper die 2 is pushed down and the gob 1 is pressed into a predetermined shape to form a single glass press lens. After the molding process is completed, the upper mold 2 is pulled upward, and then the lower mold 3 is pushed up by the push rod 5, and the gob 1, which has been molded into one glass press lens, is taken out from the body mold 4. It has become.

とζろが、このような従来の成形装置によって成形され
たガラスプレスレンズは、上記ゴブ１の重輪のバラツキ
がそのま壕プレスレンズの肉厚のバラツキとなって現わ
れ、これがレンズの光学特性に影響してしまうという重
大な欠点を有していた。However, in glass press lenses molded by such conventional molding equipment, variations in the heavy wheels of the gob 1 appear as variations in the wall thickness of the trench press lens, and this affects the optical properties of the lens. It had the serious drawback of affecting the

（目的） 本発明の目的は、上記の点に鑑み、ゴブの重量にバラツ
キはあっても、プレスレンズの肉厚には影響しないよ５
なガラスプレスレンズ及びその成形装置を提供するにあ
る。(Objective) In view of the above-mentioned points, the object of the present invention is to ensure that even if there is variation in the weight of the gob, it does not affect the thickness of the press lens.
The purpose of the present invention is to provide a glass press lens and a molding device for the same.

（概１ｊＩ） 本発明は上記目的を達成するために、成形装置の上下型
及び胴型間にガラスプレスレンズの胴周の一部を規制し
ない空隙を設け、この空Ｎ部分に余分のゴブが流し込ま
れてガラスプレスレンズの肉厚が一定となるよ５Ｋｌ、
たことを特徴とする。(About 1jI) In order to achieve the above object, the present invention provides a gap between the upper and lower molds and the body mold of a molding device that does not restrict a part of the body circumference of the glass press lens, and in this empty N part, excess gob is removed. The wall thickness of the glass press lens will be constant after pouring 5Kl,
It is characterized by:

（実施例） 以下、本発明を図示の実施例に基いて説明する。(Example) Hereinafter, the present invention will be explained based on illustrated embodiments.

第３図は、本発明の＠１の実施例を示すガラスプレスレ
ンズの断面図、第４図は第３図のガラスプレスレンズを
成形する成形装置の要部断面図を夫々示している。本実
施例におけるガラスプレスレンズ１１は全面曲面である
両凸レンズであって、第３図に示すように、その下面１
２ｂと接する胴周面は同レンズ１１の有効口径に等しい
外径に規制された規制周辺部１３となっており、上面１
２ＪＩと接する胴周面の外径は上記規制周辺部１３の外
径より僅かに大きく外径が規制されない開放周辺部１４
となっている。FIG. 3 is a cross-sectional view of a glass press lens showing an example @1 of the present invention, and FIG. 4 is a cross-sectional view of a main part of a molding apparatus for molding the glass press lens of FIG. 3. The glass press lens 11 in this embodiment is a biconvex lens with a completely curved surface, and as shown in FIG.
The circumferential surface of the barrel in contact with 2b is a regulated peripheral part 13 whose outer diameter is equal to the effective aperture of the lens 11, and the upper surface 1
The outer diameter of the trunk circumferential surface in contact with 2JI is slightly larger than the outer diameter of the regulated periphery 13 and the open periphery 14 whose outer diameter is not regulated.
It becomes.

一方、上記ガラスプレスレンズ１１を成形加工する成形
装置１５は、第４図に示すよ５．ＩＣ，上型１６゜下型
１７．胴型１８が夫々上記第１，２図における成形装置
の上型２．下型３．胴型４とほば同様に構成されており
、その作用もほぼ同様である。唯、上記上型１６の外径
は胴型１８の内径より僅かに大きく、上記下型１７は胴
型１８に摺動用ｎＬに嵌入しており、同下型１７の最下
位の位置はガラスプレスレンズ１１用Ｑゴブ１１Ａが調
型１８内に投入されても好適におさまる程度の空間が出
来るように胴型１８に固定されるようＫなっている。そ
して、上記胴型１８と上、下型１６．１７とは同一中心
軸上において所定の偏芯景内に押えられていると共に、
上記上型１６の最下位のプレス位置と上記下型１７の胴
型１８への固定位置との両型１６．１７の間隔は、加工
されるガラスプレスレンズ１１の肉厚と最密に一致する
ように定められている。又、上記上型１６の最下位の位
置では、第４図に示すようにその胴型１８の上端面に対
向する下面と上記胴型１８の上端面とは間１！１ｉＤ＋
を有していて、この間隙Ｄ１内に上、下型１６，１７　
ｋより押圧されたゴブ１１Ａの余分の量が押し出される
よう帆なっている。On the other hand, the molding device 15 for molding the glass press lens 11 is as shown in FIG. IC, upper mold 16° lower mold 17. The body mold 18 is the upper mold 2 of the molding apparatus shown in FIGS. 1 and 2, respectively. Lower mold 3. It is constructed almost the same as the body type 4, and its function is also almost the same. However, the outer diameter of the upper mold 16 is slightly larger than the inner diameter of the body mold 18, and the lower mold 17 is fitted into the body mold 18 with a sliding nL, and the lowest position of the lower mold 17 is placed in a glass press. The Q gob 11A for the lens 11 is fixed to the body mold 18 so that there is enough space for it to fit properly even if it is inserted into the adjustment mold 18. The body mold 18 and the upper and lower molds 16 and 17 are held within a predetermined eccentricity on the same central axis, and
The distance between the molds 16 and 17 between the lowest press position of the upper mold 16 and the fixed position of the lower mold 17 to the body mold 18 closely matches the thickness of the glass press lens 11 to be processed. It is defined as follows. Furthermore, at the lowest position of the upper mold 16, as shown in FIG.
The upper and lower molds 16, 17 are located within this gap D1.
The gob 11A is shaped like a sail so that the excess amount of the gob 11A pressed by the k is pushed out.

このよ５に構成された本発明の成形装置１５によるガラ
スプレスレンズ１１の成形方法は上記第１゜２図におけ
る成形装置の場合とほぼ同様であるが。The method of molding the glass press lens 11 using the molding apparatus 15 of the present invention constructed as described above is almost the same as that of the molding apparatus shown in FIGS.

上述したようにゴブＩＩＡに重量のバラツキがあっても
成形されたガラスプレスレンズ１１の肉厚は一定である
。従って、従来のこの種の欠点を見事に解消すると共に
、上記プレスレンズ１１の規制周辺部１５がその後のレ
ンズの加工や組立上の正確な衝となるので加工が完了し
、組立てられたレンズの性能は一段と向上させることが
出来る。As described above, even if the weight of the gob IIA varies, the thickness of the molded glass press lens 11 is constant. Therefore, this type of conventional drawback has been successfully solved, and since the regulating peripheral portion 15 of the press lens 11 serves as an accurate point for subsequent processing and assembly of the lens, the processing is completed and the assembled lens is Performance can be further improved.

また、本発明によるガラスプレスレンズ１１にお同レン
ズの軸方向の位置決めに利用することができる。即ち上
記直角部分を巧みに利用してガラスプレスレンズ１１を
レンズ保持枠に組み込んだ場合の一例を第５図に示しで
ある。この第５図に示すように、レンズ保持枠１９の中
央部の内面には上記プレスレンズ１１の規制周辺部１３
が嵌入する嵌合部１９ａが設けられており、同嵌合部１
９ａの後部寄りＶＣＧりて上記解放周辺部１４が入り込
む周溝１９ｂが投げられている。そして同周溝’１９ｂ
の後部がゎには周知のようにレンズ押えｍ２０がねじ込
まれて、プレスレンズ１１をレンズ枠１１Ｃ固定するよ
５になっている。この図から明かなように、上記プレス
レンズ１１の規制周辺部１５がレンズ保持枠１９の嵌合
部１９ａ　ＦＣ精密に嵌合すると共Ｋ、同プレスレンズ
１１の解放周辺部１４の前面がレンズ保持枠１９の周溝
１９ｂの段部に衝合することｋより同プレスレンズ１１
０光軸方向の位置も精密に出されて同レンズ１１は固定
される。Further, it can be used for axial positioning of the glass press lens 11 according to the present invention. That is, FIG. 5 shows an example in which the glass press lens 11 is assembled into a lens holding frame by skillfully utilizing the above-mentioned right angle portion. As shown in FIG. 5, the inner surface of the central portion of the lens holding frame 19 has a regulating peripheral portion 13 of the press lens 11.
A fitting part 19a into which the fitting part 1 is fitted is provided.
A circumferential groove 19b into which the release peripheral portion 14 enters is formed near the rear of VCG 9a. And the same circumferential groove '19b
As is well known, the rear part of the lens holder M20 is screwed into the lens holder 5 to fix the press lens 11 to the lens frame 11C. As is clear from this figure, when the regulating peripheral part 15 of the press lens 11 is precisely fitted into the fitting part 19a of the lens holding frame 19, the front surface of the releasing peripheral part 14 of the press lens 11 is the lens holding frame 19. By abutting against the step part of the circumferential groove 19b of the frame 19, the press lens 11
The position in the zero optical axis direction is also precisely determined and the lens 11 is fixed.

第６図は、本発明の第２の実施例を示すガラスプレスレ
ンズの断面図、第７図は上記第６図のガラスプレスレン
ズを成形する成形装置の要部断面図を夫々示している。FIG. 6 is a sectional view of a glass press lens according to a second embodiment of the present invention, and FIG. 7 is a sectional view of essential parts of a molding apparatus for molding the glass press lens shown in FIG. 6.

本実施例におけるガラスプレスレンズ２１も光学性能を
満すため全面曲面になっていて、上面２２ａが凸面、下
面２２ｂが凹面からなる凹凸レンズであって、その外周
面が規制周辺部２５となっており、上面２２ａの周縁よ
り上方に突出するリング状の周壁が解放周辺部２４とな
っている。本！ｉ！施例におけるプレスレンズ２１は、
前実施例におけるプレスレンズ１１がゴブの重琶のバラ
ツキを周方向の解放周辺部１４で調整するようにしてい
たのに対し、周面上方に向けた解放周辺部２４ＧＣよっ
て調整するようにしたものである。The glass press lens 21 in this embodiment is also entirely curved to satisfy optical performance, and is a concave-convex lens with an upper surface 22a having a convex surface and a lower surface 22b having a concave surface. A ring-shaped peripheral wall protruding upward from the peripheral edge of the upper surface 22a serves as an open peripheral portion 24. Book! i! The press lens 21 in the example is
In contrast to the press lens 11 in the previous embodiment in which the variation in the weight of the gob was adjusted by the release peripheral part 14 in the circumferential direction, the adjustment is made by the release peripheral part 24GC facing upward on the circumferential surface. It is.

このようなガラスプレスレンズ２１を成形する成形装置
２５は、第７図に示すように、固定された円筒体の副型
２８と、この胴型２８内に上方から上下動自在に挿入さ
れる、同訓型２８の内径よりも小さい外径を有する上型
２６と、同調ｍ２Ｂ内の下部に上下動可能に嵌入する下
型２７とで構成され工いる。　・上ｎＣ上下型２６　、
２７及び副型２８はそれぞれその中心軸線が一致するよ
うに配設されると共に、所定の偏芯量内に厳密に押えら
れていることは首う迄もない。そして、第７図の状態、
即ち上型２６が押し下げられた所定の位置とこの時の下
型２７との間隔は厳密に規制されていて、これＫより成
形されたゴブ２１Ａの肉厚は一定となり、同ゴブ２１Ａ
の余分の量は、図に示すように、上型２６と！ｐＩ型２
８との間１！ＪｉＤ、内に押し出されるようＫなってい
る。そして、この押し出されたリング状の突出部が開放
周辺部２４を形成する。この開放周辺部２４は後に研削
されるものである。なお、本成形装置２５のその他の作
用は上記第４図の成形装置１５と全く同様であるのでそ
の説明は重複を避けるため省略する。As shown in FIG. 7, a molding device 25 for molding such a glass press lens 21 includes a fixed cylindrical sub-mold 28, and a body mold 28 which is inserted into the body mold 28 from above so as to be vertically movable. It is constructed of an upper mold 26 having an outer diameter smaller than the inner diameter of the tuning mold 28, and a lower mold 27 that fits into the lower part of the tuning m2B so as to be movable up and down.・Upper nC upper and lower type 26,
27 and the sub-mold 28 are arranged so that their central axes coincide with each other, and are not strictly held within a predetermined eccentricity. Then, the state shown in Figure 7,
That is, the distance between the predetermined position where the upper die 26 is pressed down and the lower die 27 at this time is strictly regulated, and the thickness of the gob 21A formed from this K is constant, and the thickness of the gob 21A formed from this K is constant.
As shown in the figure, the excess amount is the upper mold 26 and! pI type 2
Between 8 and 1! JiD, K seems to be pushed inwards. This extruded ring-shaped protrusion forms the open peripheral portion 24. This open peripheral portion 24 will be ground later. The other functions of the molding device 25 are exactly the same as those of the molding device 15 shown in FIG. 4 above, so a description thereof will be omitted to avoid duplication.

又、この第２実施例のレンズの特有の効果は成形された
ガラスプレスレンズ２１の外周には突出する開放周辺部
がないので、レンズ保持枠にこのための周溝等を設ける
必要がなく、それだけレンズ保持枠の直径を小さくする
ことが出来ることである。Further, the unique effect of the lens of this second embodiment is that since there is no protruding open peripheral part on the outer periphery of the molded glass press lens 21, there is no need to provide a peripheral groove etc. for this purpose in the lens holding frame. The diameter of the lens holding frame can be reduced accordingly.

なお、本実施例においては、レンズ下面２２ｂを全面曲
面にしたが、これは有効径が小さい場合は、その周辺を
平面にしても良い。また、このｍ２実施例の成形装置２
５　ｋおける副型２８の内面を、ゆるいテーバ状にして
おけば、レンズの離形動作が容易になる。In this embodiment, the lower surface 22b of the lens is entirely curved, but if the effective diameter is small, the periphery thereof may be made flat. In addition, the molding device 2 of this m2 embodiment
If the inner surface of the sub-mold 28 at 5k is formed into a loose tapered shape, the mold release operation of the lens becomes easier.

第８図は、本発明の第３の実施例を示すガラスプレスレ
ンズの断面図、ｇｑ図は第８図のガラスプレスレンズを
成形する成形装置の要部断面図を夫々示している。本実
施例のガラスプレスレンズ３１も光学特性を満す全面曲
面のレンズであって、上下面５２ａ　、　５２ｂとも凹
面の両凹レンズであり、外局面の中央部にリング状に突
出し【上述した開放周辺部５４が形成され、その上下の
局面が上述した規制周辺部５５ａ　、　５３ｂとなって
いる。このように本実施例ではガラスプレスレンズ３１
の局面部の上下面側に規制周辺部５５ａ、５５ｂを設け
ることＫよって、レンズ保持枠（図示されず）に対して
２つの衝面でプレスレンズ５１の光軸方向の位置決めが
出来るようになっている。FIG. 8 is a sectional view of a glass press lens according to a third embodiment of the present invention, and FIG. 8 is a sectional view of a main part of a molding apparatus for molding the glass press lens of FIG. 8. The glass press lens 31 of this embodiment is also a fully curved lens that satisfies optical characteristics, and is a biconcave lens with concave upper and lower surfaces 52a and 52b, and a ring-shaped protrusion in the center of the outer surface [the above-mentioned open periphery]. A portion 54 is formed, and its upper and lower surfaces constitute the above-mentioned regulating peripheral portions 55a and 53b. In this way, in this embodiment, the glass press lens 31
By providing the regulating peripheral parts 55a and 55b on the upper and lower sides of the curved part, the press lens 51 can be positioned in the optical axis direction with two contact surfaces with respect to the lens holding frame (not shown). ing.

このようなガラスプレスレンズ３１を成形する成形装置
３５は＠９図に示すように構成されている。A molding device 35 for molding such a glass press lens 31 is configured as shown in Figure @9.

即ち、上型５６．下型５７．ガイド部材５８．下方周辺
規制部材３９．及び上方周辺規制部材４０で構成されて
いる。That is, the upper mold 56. Lower mold 57. Guide member 58. Lower peripheral regulating member 39. and an upper peripheral regulating member 40.

上記ガイド部材３８は円筒体状のもので不動部材に固定
されており、このガイド部材３８内の下部には比較的肉
薄の円筒体からなる上記下方周辺規制部材３９が摺動可
能に嵌入しており、この下方周辺規制部材３９内に上記
下型３７が摺動可能に嵌入している。又、ガイド部拐３
８内の上方には比較的肉厚の円筒体からなる上記上方周
辺規制部材４０が摺動自在ｔｃｆｆｆ人しており、同上
方周辺規１１ｉ１ｊ部材４０内に上記上型３６が摺動可
能に嵌入している。なお、上記ガイド部材６８の上端部
内面は、上記上方周辺規制部材４０が入り易いように図
示のようにテーパー面となっている。又、上記上方周辺
規制部材４０の下端部内面にはガラスプレスレンズ６１
の上面周縁が直角に成形されるように段部５６ａが設け
られている。上記上方および下方周辺規制部材３９　、
４０と上、下型５６．５７とはガイド部材３８の中心ｌ
１ｔｌＩ！ｌＪ上に各中心軸を一致させて配設され、か
つ厳密に所定の偏芯量内に押えられていると共に、上、
下型３６．３７の押圧時の間隔も一定となるようになっ
ている。唯、このときの上記上下の各周辺規制部材５９
　、４０間の間隙Ｄ３は変えられるように夫々が独自に
上下に移動出来るようｋなっている。これはプレスレン
ズ３１の規制周辺部５３ａ、　３３ｂ及び開放周辺部３
４がレンズ保持枠（図示されず）Ｋ対して最適となるよ
うＫａＡＩＪｔ出来るようにするためである。The guide member 38 has a cylindrical shape and is fixed to an immovable member, and the lower periphery regulating member 39 made of a relatively thin cylinder is slidably fitted into the lower part of the guide member 38. The lower mold 37 is slidably fitted into the lower periphery regulating member 39. Also, guide kidnapping 3
The upper peripheral regulating member 40 made of a relatively thick cylindrical body is slidably located above the inner part 8, and the upper die 36 is slidably fitted into the upper peripheral regulating member 40. are doing. The inner surface of the upper end of the guide member 68 is tapered as shown in the figure so that the upper peripheral regulating member 40 can be easily inserted therein. Further, a glass press lens 61 is provided on the inner surface of the lower end of the upper peripheral regulating member 40.
A step portion 56a is provided so that the upper surface periphery thereof is formed at a right angle. the upper and lower peripheral regulating members 39;
40 and the upper and lower molds 56 and 57 are the center l of the guide member 38
1tlI! The upper and
The intervals when the lower molds 36 and 37 are pressed are also constant. However, at this time, each of the upper and lower peripheral regulating members 59
, 40 are arranged so that each can independently move up and down so that the gap D3 can be changed. These are the restricted peripheral parts 53a, 33b and the open peripheral part 3 of the press lens 31.
This is to enable KaAIJt to be optimal for the lens holding frame (not shown) K.

こりよ５に１＄１成された本実施例に′Ｍける成形装置
３５の作用も上記第４，７図における成形装置１５．２
５とほぼ同様であるが、上記上方および下方周辺規制部
材５９　、４０が存在することによって多少異なるだけ
である。即ち、上記上型６６と上方周辺規制部材４０と
が一体となって、第９図の状態から上方に引き上げられ
、下方には下方周辺規制部材６９が下型６７に適宜の位
置に調整され一体となってガイド部材６８内に固定され
た状態でガイド部材３８内に上方からゴブ５１Ａが投入
される。次いで上記一体となった上型３６と上記周辺規
制部材４０とが押し下げられ、上記一体となった下型３
７と下方周辺規制部材３９との間で投入されたゴブ３１
人が成形される。このとき余分のゴブ景は上記間隙Ｄ８
内に膨出される。成形後は先づ上方周辺規制部材４０が
上方に摺動し、次いで上型５６が上方に引き上げられ、
開放されたガイド部材３８の上端部より、ガラスプレス
レンズ３１となったゴブ３１人を上記下方周辺ｍｒｌＪ
部材３９により押し上げて取り出すようになっている。The operation of the molding device 35 in this embodiment, which is made by $1.
5, but the only difference is that the upper and lower peripheral regulating members 59 and 40 are present. That is, the upper mold 66 and the upper periphery regulating member 40 are pulled upward from the state shown in FIG. The gob 51A is then inserted into the guide member 38 from above while being fixed within the guide member 68. Next, the integrated upper mold 36 and the peripheral regulating member 40 are pushed down, and the integrated lower mold 3
7 and the lower peripheral regulating member 39
People are molded. At this time, the extra gobscape is the gap D8 above.
It bulges inward. After molding, the upper peripheral regulating member 40 first slides upward, and then the upper mold 56 is pulled upward.
From the upper end of the opened guide member 38, move the 31 gobs that have become the glass press lens 31 to the lower periphery mrlJ.
It can be taken out by pushing up with a member 39.

また、この第３実施例のレンズの特有の効果は、レンズ
３１０周面の開放周辺＠５４の上下に成形された規制周
辺部５５ａ、５５ｂを用いて、前記第１実施例’）４（
’）とｌ’Ｊ様にレンズ保持枠に対してガラスプレスレ
ンズ３１の光軸方向の位置決めが容易にできることであ
る。Further, the unique effect of the lens of the third embodiment is that by using the regulating peripheral parts 55a and 55b formed above and below the open periphery @54 on the peripheral surface of the lens 310, the first embodiment') 4(
') and l'J, the glass press lens 31 can be easily positioned in the optical axis direction with respect to the lens holding frame.

（効果） 以上説明したように、本発明によれば、従来のこの種の
ガラスプレスレンズが有していた、ゴブの重量のバラツ
キに基づくレンズ肉厚のバラツキは兄事に解消されると
共に、その後のレンズ加工や枠入に際しての最適の衝が
レンズ曲面の成形時に同時に得られ、レンズの性能を一
段と向上させることが出来る。(Effects) As explained above, according to the present invention, the variation in lens thickness caused by the variation in the weight of the gob, which conventional glass press lenses of this type had, is eliminated, and The optimum contrast for subsequent lens processing and frame insertion can be obtained at the same time when molding the lens curved surface, and the performance of the lens can be further improved.

なお、上記各実施例に於ては何れも両面が曲面のガラス
プレスレンズとなっているが、何れか一面が平面の場合
でも適用出来ることは勿論である。In each of the above-mentioned embodiments, both surfaces are curved glass pressed lenses, but it goes without saying that the present invention can also be applied even if one of the surfaces is flat.

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

第１．第２図は、従来のガラスプレスレンズの成形装置
の作動ａｍを夫々示す要部ｗｆｒｒｆ１図、第３図は、
本発明の第１の実施例を示すガラスプレスレンズの断面
図、 第４図は、上記第３図のガラスプレスレンズを成形する
成形装置の要部断面図、 第５図は、上記第３図のガラスプレスレンズがレンズ保
持枠に組み込まれた状態の一例を示す断面図、 第６図は１本発明の第２の実施例を示すガラスプレスレ
ンズの断面図、 第７図は、上記第６図のガラスプレスレンズを成形する
成形装置の要部断面図、 第８図は、本発明の第３の実施例を示すガラスプレスレ
ンズの断面図、 第９図は、上記第８図のガラスプレスレンズを成形する
成形装置の要部断面図である。 １１．２１，３１・・・争ガラスプレスレンズ１３．２
５．５３・・・・規制周辺部 １４．２４，３４・・・・解放周辺部 １５．２５．３５・・・拳ガラスプレスレンズ成形装置
１６．２６．３６・・・・上　型 １７．２７．５７・・・・下　型 １８、２８・φ・・胴型 肴許出願人　　　　オリンパス光学工業株式会社蔦　１
　図 馬５図 発６区 蔦８図 スら1st. FIG. 2 is a main part wfrrf1 diagram showing the operation am of a conventional glass press lens molding device, and FIG.
A cross-sectional view of a glass press lens showing the first embodiment of the present invention; FIG. 4 is a cross-sectional view of a main part of a molding apparatus for molding the glass press lens shown in FIG. 3 above; FIG. FIG. 6 is a cross-sectional view of a glass press lens showing a second embodiment of the present invention; FIG. FIG. 8 is a cross-sectional view of a glass press lens showing a third embodiment of the present invention; FIG. 9 is a cross-sectional view of the glass press lens shown in FIG. 8. FIG. 2 is a sectional view of a main part of a molding device that molds a lens. 11.21,31...War glass press lens 13.2
5.53...Regulation peripheral part 14.24, 34...Release peripheral part 15.25.35...Fist glass press lens molding device 16.26.36...Upper mold 17.27 ．57・・・Bottom mold 18, 28・φ・・Body mold Applicant Olympus Optical Industry Co., Ltd. Tsuta 1
Picture horse 5 picture departure 6 ward tsuta picture 8 picture etc.

Claims (2)

【特許請求の範囲】[Claims] （１）軟化ガラス塊（ゴブ）から成形型の押圧によって
成形されるガラスプレスレンズにおいて、有効口径の周
縁部に、成形型により規制された規制周辺部と、規制さ
れない開放周辺部とを有することを特徴とするガラスプ
レスレンズ。(1) In a glass press lens formed from a softened glass gob by pressing with a mold, the periphery of the effective aperture has a regulated periphery regulated by the mold and an open periphery that is not regulated. A glass press lens featuring: （２）軟化ガラス塊（ゴブ）を上型と下型及び胴型から
なる成形型により押圧してガラスプレスレンズを成形加
工するガラスプレスレンズ装置において、 上記上下型と胴型間にガラスプレスレンズの胴周の一部
を規制しない開放周辺部用空隙を設けたことを特徴とす
るガラスプレスレンズの成形装置。(2) In a glass press lens device that presses a softened glass gob (gob) with a mold consisting of an upper mold, a lower mold, and a body mold to form a glass press lens, the glass press lens is placed between the upper mold and the body mold. A molding device for a glass press lens, characterized in that a gap for an open peripheral portion is provided that does not restrict a part of the circumference of the glass press lens.
JP13079884A 1984-06-25 1984-06-25 Glass press lens and pressing machine therefor Granted JPS6110034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13079884A JPS6110034A (en) 1984-06-25 1984-06-25 Glass press lens and pressing machine therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13079884A JPS6110034A (en) 1984-06-25 1984-06-25 Glass press lens and pressing machine therefor

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP18715186A Division JPS6289918A (en) 1986-08-09 1986-08-09 Lens holding device

Publications (2)

Publication Number Publication Date
JPS6110034A true JPS6110034A (en) 1986-01-17
JPS6310100B2 JPS6310100B2 (en) 1988-03-03

Family

ID=15042947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13079884A Granted JPS6110034A (en) 1984-06-25 1984-06-25 Glass press lens and pressing machine therefor

Country Status (1)

Country Link
JP (1) JPS6110034A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02175621A (en) * 1988-08-18 1990-07-06 Olympus Optical Co Ltd Formation of optical glass element
US6132890A (en) * 1997-03-24 2000-10-17 Tocalo Co., Ltd. High-temperature spray coated member and method of production thereof
US6180259B1 (en) 1997-03-24 2001-01-30 Tocalo Co., Ltd. Spray coated member resistant to high temperature environment and method of production thereof
WO2008075724A1 (en) * 2006-12-20 2008-06-26 Hitachi Maxell, Ltd. Production method of optical element, optical element forming mold and optical element
JP2008150265A (en) * 2006-12-20 2008-07-03 Hitachi Maxell Ltd Method of manufacturing optical device, optical device forming mold and optical device
JP2008297146A (en) * 2007-05-30 2008-12-11 Hitachi Maxell Ltd Optical element, and optical element forming mold
WO2008149671A1 (en) * 2007-05-31 2008-12-11 Konica Minolta Opto, Inc. Optical element manufacturing method and optical element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413247A (en) * 1977-06-30 1979-01-31 Ibm Zero offset compensator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413247A (en) * 1977-06-30 1979-01-31 Ibm Zero offset compensator

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02175621A (en) * 1988-08-18 1990-07-06 Olympus Optical Co Ltd Formation of optical glass element
US6132890A (en) * 1997-03-24 2000-10-17 Tocalo Co., Ltd. High-temperature spray coated member and method of production thereof
US6180259B1 (en) 1997-03-24 2001-01-30 Tocalo Co., Ltd. Spray coated member resistant to high temperature environment and method of production thereof
WO2008075724A1 (en) * 2006-12-20 2008-06-26 Hitachi Maxell, Ltd. Production method of optical element, optical element forming mold and optical element
JP2008150265A (en) * 2006-12-20 2008-07-03 Hitachi Maxell Ltd Method of manufacturing optical device, optical device forming mold and optical device
US20100033849A1 (en) * 2006-12-20 2010-02-11 Hitachi Maxell, Ltd. Production method of optical element, optical element forming mold and optical element
US8300327B2 (en) 2006-12-20 2012-10-30 Hitachi Maxell, Ltd Production method of optical element, optical element forming mold and optical element
JP2008297146A (en) * 2007-05-30 2008-12-11 Hitachi Maxell Ltd Optical element, and optical element forming mold
WO2008149671A1 (en) * 2007-05-31 2008-12-11 Konica Minolta Opto, Inc. Optical element manufacturing method and optical element

Also Published As

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