JPH0566302A - Fresnel lens structure - Google Patents
Fresnel lens structureInfo
- Publication number
- JPH0566302A JPH0566302A JP22768091A JP22768091A JPH0566302A JP H0566302 A JPH0566302 A JP H0566302A JP 22768091 A JP22768091 A JP 22768091A JP 22768091 A JP22768091 A JP 22768091A JP H0566302 A JPH0566302 A JP H0566302A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- guide member
- press
- recessed part
- adhesive
- 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
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
-
- 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
- B29L2011/005—Fresnel lenses
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は光通信に用いる発光・受
光デバイス用のプレスレンズの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a press lens for a light emitting / receiving device used for optical communication.
【０００２】[0002]
【従来の技術】従来、この種のプレスレンズの構造は図
３に示すように、プラスチックから成るレンズ１を他の
部品に組み込んで固定する時、接着剤等を利用してい
た。2. Description of the Related Art Conventionally, as shown in FIG. 3, the structure of this type of press lens utilizes an adhesive or the like when the lens 1 made of plastic is assembled and fixed in other parts.
【０００３】また、レンズ１に低融点ガラス（融点３０
０〜５００℃程度）を用い、このレンズを他の金属材料
に固定していた。Further, a low melting point glass (melting point 30
This lens was fixed to another metal material by using (0 to 500 ° C.).
【０００４】[0004]
【発明が解決しようとする課題】上述した従来のプレス
レンズの構造は、レンズのみで構成されているので接着
剤で他の部品に精度良く固定することが難しく、経時変
化により光軸がずれるという欠点がある。また、プレス
時の温度が４００〜６００度程度であり、プレスレンズ
に使用される材料も低融点ガラス並みの融点なので、プ
レスレンズを低融点ガラスを用いて他の金属材料と固定
することができない。Since the structure of the conventional press lens described above is composed of only the lens, it is difficult to fix it to other parts with an adhesive with high precision, and the optical axis shifts due to aging. There are drawbacks. Further, the temperature at the time of pressing is about 400 to 600 ° C., and the material used for the press lens has a melting point similar to that of low-melting glass, so that the press lens cannot be fixed to another metal material using the low-melting glass .
【０００５】[0005]
【課題を解決するための手段】本発明のプレスレンズの
構造は、プレス成型により製造されるレンズと、このレ
ンズの円周部が保持される凹型の溝を内側に設けたガイ
ド部材とを有する。The structure of the press lens of the present invention comprises a lens manufactured by press molding and a guide member having a concave groove for holding the circumferential portion of the lens inside. .
【０００６】また、前記ガイド部材の外側と前記凹形の
溝とを貫通する空気抜の穴を少なくとも１つ設ける。Further, at least one air vent hole is provided which penetrates the outer side of the guide member and the concave groove.
【０００７】また、凸形突起を内周に設けたガイド部材
と、前記のレンズの円周部が前記凸形突起を覆うように
成形する。Further, the guide member provided with a convex projection on its inner circumference and the circumferential portion of the lens are molded so as to cover the convex projection.
【０００８】[0008]
【実施例】次に本発明について図面を参照して説明す
る。The present invention will be described below with reference to the drawings.
【０００９】図１は本発明の第１の実施例の側面図
（ａ）及び正面図（ｂ）である。レンズ１は、プレス成
型の際に左右両側から圧力を受け、目的の形状に塑性変
形する。この時、レンズ１の回りに配置されているガイ
ド部材２の凹部３がプレス成型時の逃げとなっているた
め、レンズ材料が凹部３に流れ込む。FIG. 1 is a side view (a) and a front view (b) of a first embodiment of the present invention. The lens 1 receives pressure from the left and right sides during press molding and plastically deforms to a desired shape. At this time, since the concave portion 3 of the guide member 2 arranged around the lens 1 serves as a relief during press molding, the lens material flows into the concave portion 3.
【００１０】レンズ１の体積と、使用するレンズ材料の
量及び凹部３の体積を調整するとこことにより、レンズ
材料が凹部３に流れ込み、あふれ出ない様に設定でき
る。By adjusting the volume of the lens 1, the amount of lens material used, and the volume of the concave portion 3, it is possible to set the lens material so that the lens material does not flow into the concave portion 3 and overflow.
【００１１】また、凹部３とガイド部材２の外周との間
に１つ以上に空気抜穴４を設けておくことにより、プレ
ス成型の際にレンズ材料の流れが良くなる。Further, by providing at least one air vent hole 4 between the recess 3 and the outer periphery of the guide member 2, the flow of the lens material is improved during press molding.
【００１２】図２は本発明の第２の実施例の側面図
（ａ）及び正面図（ｂ）である。プレス成型の際にレン
ズ材料がガイド部材２の凸部５の左右に流れ込むため、
凸部５の左右の空間が逃げとなる。FIG. 2 is a side view (a) and a front view (b) of a second embodiment of the present invention. Since the lens material flows into the left and right of the convex portion 5 of the guide member 2 during press molding,
The space on the left and right of the convex portion 5 becomes a relief.
【００１３】図４は本実施例のガイド部材の凹部又は凸
部の形状を示す。FIG. 4 shows the shape of the concave portion or the convex portion of the guide member of this embodiment.
【００１４】このようにすると、レンズ１の回りに凹部
３又は凸部５を有するガイド部材２を設けることによ
り、接着剤等を利用しなくとも、金属材料（例えばステ
ンレス鋼）のガイド部材２と固定できる。また接着剤等
を用いて保持固定していた場合と比較して、接着剤等の
長期間経過時の劣化や、吸湿による劣化を防止できる。In this way, by providing the guide member 2 having the concave portion 3 or the convex portion 5 around the lens 1, the guide member 2 made of a metallic material (for example, stainless steel) can be used without using an adhesive or the like. Can be fixed. Further, as compared with the case where the adhesive or the like is held and fixed, deterioration of the adhesive or the like over a long period of time or deterioration due to moisture absorption can be prevented.
【００１５】また、接着による難かしい位置決めや、接
着作業を回避できる。更に、プレス成型時に、ガイド部
材２がレンズ１に固定されるため、このプレスレンズを
他の部品に組み込む際には、金属材料のガイド部材２が
固定されればよい。Further, it is possible to avoid the difficult positioning by adhesion and the adhesion work. Further, since the guide member 2 is fixed to the lens 1 during press molding, the guide member 2 made of a metal material may be fixed when incorporating the press lens into other parts.
【００１６】また、金属材料の場合、ガラス材料と異な
り、ワレ、カケが発生しにくく、ハンドリングが容易で
ある。また、溶接等による固定が可能であり、接着剤等
による固定に比べて経時変化が極めて少ないため、固定
部分がずれにくい。Further, unlike the glass material, the metal material is less likely to be cracked or chipped and is easy to handle. In addition, since it can be fixed by welding or the like and its change over time is extremely smaller than that by fixing with an adhesive or the like, the fixed portion is less likely to shift.
【００１７】ただし、レンズ１の素材がガラスの場合、
プレス加工時の温度変化によるガラスのカケ、割れを防
ぐため、ガラスの融点付近の線膨張係数とガイド部材２
の線膨張係数がほぼ等しい材料を選定する必要がある。However, when the lens 1 is made of glass,
The linear expansion coefficient near the melting point of the glass and the guide member 2 are used to prevent chipping and cracking of the glass due to temperature changes during pressing.
It is necessary to select materials that have almost the same linear expansion coefficient.
【００１８】[0018]
【発明の効果】以上説明したように本発明は、レンズを
プレス成型するとき回りに凹部３又は凸部５を有するガ
イド部材を設けることにより、接着剤等を利用しなくと
もレンズを金属材料のガイド部材に固定できる。As described above, according to the present invention, by providing the guide member having the concave portion 3 or the convex portion 5 around the lens when press-molding the lens, the lens is made of a metal material without using an adhesive or the like. Can be fixed to the guide member.
【図１】本発明の第１の実施例の側面図及び正面図であ
る。FIG. 1 is a side view and a front view of a first embodiment of the present invention.
【図２】本発明の第２の実施例の側面図及び正面図であ
る。FIG. 2 is a side view and a front view of a second embodiment of the present invention.
【図３】従来のプレスレンズの一例の側面図である。FIG. 3 is a side view of an example of a conventional press lens.
【図４】本実施例のガイド部材の断面図である。FIG. 4 is a cross-sectional view of a guide member of this embodiment.
１ レンズ ２ ガイド部材 ３ 凹部 ４ 空気ぬけ穴 ５ 凸部 1 lens 2 guide member 3 concave portion 4 air vent hole 5 convex portion
Claims (3)
このレンズの円周部が保持される凹型の溝を内側に設け
たガイド部材とを有することを特徴とするプレスレンズ
の構造。1. A lens manufactured by press molding,
A structure of a press lens, comprising: a guide member having a concave groove inside which a circumferential portion of the lens is held.
を貫通する空気抜の穴を少なくとも１つ設けることを特
徴とする請求項１記載のプレスレンズの構造。2. The structure of the press lens according to claim 1, wherein at least one air vent hole is provided through the outside of the guide member and the concave groove.
前記のレンズの円周部が前記凸形突起を覆うように成形
することを特徴とする請求項１記載のプレスレンズの構
造。3. A guide member having a convex projection provided on the inner periphery thereof,
The structure of the press lens according to claim 1, wherein a circumferential portion of the lens is molded so as to cover the convex protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22768091A JPH0566302A (en) | 1991-09-09 | 1991-09-09 | Fresnel lens structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22768091A JPH0566302A (en) | 1991-09-09 | 1991-09-09 | Fresnel lens structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0566302A true JPH0566302A (en) | 1993-03-19 |
Family
ID=16864651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22768091A Pending JPH0566302A (en) | 1991-09-09 | 1991-09-09 | Fresnel lens structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0566302A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1162481A2 (en) * | 2000-06-07 | 2001-12-12 | Enplas Corporation | Image pickup lens system |
| EP1455211A2 (en) * | 2003-03-07 | 2004-09-08 | Alps Electric Co., Ltd. | Lens mount with an integrated lens |
| EP1462419A2 (en) * | 2003-03-25 | 2004-09-29 | Alps Electric Co., Ltd. | Method for making holder/optical-element assembly |
| JP2006163126A (en) * | 2004-12-09 | 2006-06-22 | Olympus Corp | Optical component integrated to frame and manufacturing method of optical component integrated to frame |
| US7386998B2 (en) * | 2003-03-25 | 2008-06-17 | Alps Electric Co., Ltd. | Method of manufacturing holder-mounted optical element |
| JP2008256938A (en) * | 2007-04-04 | 2008-10-23 | Olympus Corp | Optical component and method for manufacturing optical component |
| JP2012529069A (en) * | 2009-06-02 | 2012-11-15 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | Lens and manufacturing method thereof |
| WO2013108764A1 (en) * | 2012-01-17 | 2013-07-25 | 富士フイルム株式会社 | Method for producing optical element, and optical element |
| US8792190B2 (en) | 2009-06-02 | 2014-07-29 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Lens and method for manufacturing same |
| CN104062736A (en) * | 2014-06-05 | 2014-09-24 | 中国科学院西安光学精密机械研究所 | Clamping tool and method of large-aperture quadrate spherical optical element |
| CN108387992A (en) * | 2018-02-27 | 2018-08-10 | 贵州省第三测绘院 | Optical remote sensing machine focusing mirror support construction and optical sensor |
| CN112612097A (en) * | 2020-11-12 | 2021-04-06 | 南京波长光电科技股份有限公司 | Hot-pressing integrated infrared lens, forming die thereof and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307702A (en) * | 1988-06-07 | 1989-12-12 | Fujitsu Ltd | Optical part and its production |
| JPH03167514A (en) * | 1989-11-28 | 1991-07-19 | Fujitsu Ltd | Molded lens with metallic holder and production thereof and optical semiconductor module provided with the lens |
-
1991
- 1991-09-09 JP JP22768091A patent/JPH0566302A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307702A (en) * | 1988-06-07 | 1989-12-12 | Fujitsu Ltd | Optical part and its production |
| JPH03167514A (en) * | 1989-11-28 | 1991-07-19 | Fujitsu Ltd | Molded lens with metallic holder and production thereof and optical semiconductor module provided with the lens |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1162481A2 (en) * | 2000-06-07 | 2001-12-12 | Enplas Corporation | Image pickup lens system |
| JP2001350075A (en) * | 2000-06-07 | 2001-12-21 | Enplas Corp | Image pickup lens |
| EP1162481A3 (en) * | 2000-06-07 | 2004-01-02 | Enplas Corporation | Image pickup lens system |
| EP1455211A2 (en) * | 2003-03-07 | 2004-09-08 | Alps Electric Co., Ltd. | Lens mount with an integrated lens |
| EP1455211A3 (en) * | 2003-03-07 | 2004-09-15 | Alps Electric Co., Ltd. | Lens mount with an integrated lens |
| US7180688B2 (en) | 2003-03-07 | 2007-02-20 | Alps Electric Co., Ltd. | Holder/optical-element assembly |
| EP1462419A2 (en) * | 2003-03-25 | 2004-09-29 | Alps Electric Co., Ltd. | Method for making holder/optical-element assembly |
| EP1462419A3 (en) * | 2003-03-25 | 2005-03-30 | Alps Electric Co., Ltd. | Method for making holder/optical-element assembly |
| US7386998B2 (en) * | 2003-03-25 | 2008-06-17 | Alps Electric Co., Ltd. | Method of manufacturing holder-mounted optical element |
| JP2006163126A (en) * | 2004-12-09 | 2006-06-22 | Olympus Corp | Optical component integrated to frame and manufacturing method of optical component integrated to frame |
| JP2008256938A (en) * | 2007-04-04 | 2008-10-23 | Olympus Corp | Optical component and method for manufacturing optical component |
| JP2012529069A (en) * | 2009-06-02 | 2012-11-15 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | Lens and manufacturing method thereof |
| US8792190B2 (en) | 2009-06-02 | 2014-07-29 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Lens and method for manufacturing same |
| EP2437928B1 (en) * | 2009-06-02 | 2017-08-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for manufacturing wafer lens and the manufatured wafer lens |
| WO2013108764A1 (en) * | 2012-01-17 | 2013-07-25 | 富士フイルム株式会社 | Method for producing optical element, and optical element |
| JP5699228B2 (en) * | 2012-01-17 | 2015-04-08 | 富士フイルム株式会社 | Optical element manufacturing method and optical element |
| US9174399B2 (en) | 2012-01-17 | 2015-11-03 | Fujifilm Corporation | Manufacturing method of optical device, and optical device |
| CN104062736A (en) * | 2014-06-05 | 2014-09-24 | 中国科学院西安光学精密机械研究所 | Clamping tool and method of large-aperture quadrate spherical optical element |
| CN108387992A (en) * | 2018-02-27 | 2018-08-10 | 贵州省第三测绘院 | Optical remote sensing machine focusing mirror support construction and optical sensor |
| CN112612097A (en) * | 2020-11-12 | 2021-04-06 | 南京波长光电科技股份有限公司 | Hot-pressing integrated infrared lens, forming die thereof and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19990518 |