JP2002022907A5 - Optical pickup device provided with plastic lens and method of molding plastic lens - Google Patents
Optical pickup device provided with plastic lens and method of molding plastic lens Download PDFInfo
- Publication number
- JP2002022907A5 JP2002022907A5 JP2001150451A JP2001150451A JP2002022907A5 JP 2002022907 A5 JP2002022907 A5 JP 2002022907A5 JP 2001150451 A JP2001150451 A JP 2001150451A JP 2001150451 A JP2001150451 A JP 2001150451A JP 2002022907 A5 JP2002022907 A5 JP 2002022907A5
- Authority
- JP
- Japan
- Prior art keywords
- plastic lens
- optical pickup
- pickup device
- lens
- molding
- 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
Description
【0001】
【発明の属する技術分野】
本発明は、射出成形により形成したプラスチックレンズを備えた光ピックアップ装置及びプラスチックレンズの成形方法に関し、特に、小型の正のパワーを有するプラスチックレンズを備えた光ピックアップ装置及びプラスチックレンズの成形方法に関する。
[0001]
Field of the Invention
The present invention relates to an optical pickup device provided with a plastic lens formed by injection molding, and a molding method of the plastic lens, and more particularly, to an optical pickup device provided with a plastic lens having small positive power and a molding method of the plastic lens.
そこで、本発明は、転写性に優れた良好な光学性能を得ることができるとともに、射出成形に時間を要さず製品コストを抑えることができるプラスチックレンズを備えた光ピックアップ装置及びプラスチックレンズの成形方法を提供することを課題とする。 Therefore, according to the present invention, it is possible to obtain good optical performance with excellent transferability, and it is possible to suppress the product cost without requiring time for injection molding, and to mold the optical pickup device and the plastic lens The task is to provide a method.
【0006】
【課題を解決するための手段】
上記課題は、ノルボルネン系又は非晶質ポリオレフィン系の材料で射出成形により形成され、フランジ部とレンズ部との間に位置する最小肉厚T(mm)が0.7mm以下であり、正のパワーを有するプラスチックレンズを備えたことを特徴とする光ピックアップ装置、または、フランジ部とレンズ部との間に位置する最小肉厚T(mm)が0.7mm以下であり、正のパワーを有するプラスチックレンズの成形方法であり、ノルボルネン系又は非晶質ポリオレフィン系の材料で射出成形を行うことを特徴とするプラスチックレンズの成形方法によって、解決することができる。
[0006]
[Means for Solving the Problems]
The above-mentioned subject is formed of a norbornene-based or amorphous polyolefin-based material by injection molding, and the minimum thickness T (mm) located between the flange portion and the lens portion is 0.7 mm or less. Or a plastic having a positive power and a minimum thickness T (mm) located between the flange portion and the lens portion of 0.7 mm or less. It can be solved by a method of molding a plastic lens, which is a method of molding a lens, and injection molding is performed using a norbornene-based or amorphous polyolefin-based material.
【0027】
【発明の効果】
以上詳述したように、本発明によると、転写性に優れた良好な光学性能を得ることができるとともに、射出成形に時間を要さず製品コストを抑えることができる正のパワーを有するプラスチックレンズを備えた光ピックアップ装置及びプラスチックレンズの成形方法を提供することができる。
[0027]
【Effect of the invention】
As described above, according to the present invention, it is possible to obtain good optical performance with excellent transferability, and to use plastic lens with positive power which can suppress the product cost without requiring time for injection molding. And a method of molding a plastic lens.
Claims (13)
ノルボルネン系又は非晶質ポリオレフィン系の材料で射出成形を行うことを特徴とするプラスチックレンズの成形方法。A molding method of a plastic lens characterized by performing injection molding with a norbornene-based or amorphous polyolefin-based material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001150451A JP2002022907A (en) | 2001-05-21 | 2001-05-21 | Plastic lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001150451A JP2002022907A (en) | 2001-05-21 | 2001-05-21 | Plastic lens |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21756697A Division JP3341146B2 (en) | 1997-08-12 | 1997-08-12 | Plastic lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002022907A JP2002022907A (en) | 2002-01-23 |
JP2002022907A5 true JP2002022907A5 (en) | 2005-06-02 |
Family
ID=18995455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001150451A Pending JP2002022907A (en) | 2001-05-21 | 2001-05-21 | Plastic lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2002022907A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7426078B2 (en) * | 2002-11-26 | 2008-09-16 | Hitachi Maxell, Ltd. | Plastic lens, manufacturing method thereof, production tracing management method thereof, and optical pickup device |
JP2005306009A (en) * | 2004-03-22 | 2005-11-04 | Konica Minolta Opto Inc | Manufacturing method for resin for injection molding, and plastic optical element |
JP4972760B2 (en) * | 2004-06-29 | 2012-07-11 | コニカミノルタアドバンストレイヤー株式会社 | Optical element manufacturing method |
-
2001
- 2001-05-21 JP JP2001150451A patent/JP2002022907A/en active Pending
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