JPS59104335U - light pick up - Google Patents
light pick upInfo
- Publication number
- JPS59104335U JPS59104335U JP20006982U JP20006982U JPS59104335U JP S59104335 U JPS59104335 U JP S59104335U JP 20006982 U JP20006982 U JP 20006982U JP 20006982 U JP20006982 U JP 20006982U JP S59104335 U JPS59104335 U JP S59104335U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- pitch
- light transmitting
- transmitting body
- converging
- 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
Landscapes
- Optical Head (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案の一実施例を示す正面図である（但し
、ディスク１０７は断面が描いである）。
１０１・・・・・・半導体レーザ、１０２・・・・・・
出力光ビ″−ム、１０３・・・・・・第１の集束性光伝
送体、１０４ −・・・・・・偏光プリズム、１０５
・・・・・・１ハ波長板、１０６・・・・・・第２の集
束性光伝送体、１０７・・・・・・ディスク、１０８・
・・・・・反射膜、１０９・・・・・・端面１、１１０
・・・・・・反射光ビーム、１１１・・・・・・シリン
ドリカルレンズ、１１’２・・・・・・受光素子、１１
３・・・・・・保護層。FIG. 1 is a front view showing an embodiment of this invention (however, the disk 107 is shown in cross section). 101... Semiconductor laser, 102...
Output light beam, 103... First convergent light transmission body, 104 -... Polarizing prism, 105
......1C wavelength plate, 106...second focusing optical transmission body, 107...disk, 108...
...Reflection film, 109 ... End face 1, 110
...Reflected light beam, 111... Cylindrical lens, 11'2... Light receiving element, 11
3...Protective layer.
Claims (1)
の距離のほぼ２乗に比例して減少する屈折率分布を有す
る集束性光伝送体からなり、前記集束レンズである集束
性光伝送体のディスクに近接する側の端面の少なくとも
一部を凸曲面とし、レンズピッチを０．１ピツチから０
．２ピツチの範囲としたことを特徴とする光ピツクアッ
プ。The collimator lens and the focusing lens each consist of a converging light transmitting body having a refractive index distribution that decreases approximately in proportion to the square of the distance from the central axis, and are close to the disk of the converging light transmitting body that is the converging lens. At least a part of the side end surface is a convex curved surface, and the lens pitch is from 0.1 pitch to 0.
．． An optical pickup characterized by a two-pitch range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20006982U JPS59104335U (en) | 1982-12-28 | 1982-12-28 | light pick up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20006982U JPS59104335U (en) | 1982-12-28 | 1982-12-28 | light pick up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59104335U true JPS59104335U (en) | 1984-07-13 |
Family
ID=30425601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20006982U Pending JPS59104335U (en) | 1982-12-28 | 1982-12-28 | light pick up |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59104335U (en) |
-
1982
- 1982-12-28 JP JP20006982U patent/JPS59104335U/en active Pending
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