JPH01140631U - - Google Patents
Info
- Publication number
- JPH01140631U JPH01140631U JP3784788U JP3784788U JPH01140631U JP H01140631 U JPH01140631 U JP H01140631U JP 3784788 U JP3784788 U JP 3784788U JP 3784788 U JP3784788 U JP 3784788U JP H01140631 U JPH01140631 U JP H01140631U
- Authority
- JP
- Japan
- Prior art keywords
- diffraction grating
- hologram diffraction
- substrates
- grating substrates
- base material
- 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
Links
- 239000000758 substrate Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 2
Landscapes
- Optical Head (AREA)
Description
第１図はこの考案の第一の実施例を示す概略正
面図、第２図は各受光素子の平面図、第３図は各
ホログラム回折格子基板の平面図、第４図はこの
考案の第二の実施例を示す概略正面図、第５図は
従来例を示す概略正面図、第６図は異なる従来例
を示す概略正面図である。
４１，４２，４３…ホログラム回折格子基板、
４４…透明基材、４４ａ，４４ｂ，４４ｃ…取付
け面。
Fig. 1 is a schematic front view showing the first embodiment of this invention, Fig. 2 is a plan view of each light receiving element, Fig. 3 is a plan view of each hologram diffraction grating substrate, and Fig. 4 is a schematic front view of the first embodiment of this invention. FIG. 5 is a schematic front view showing the second embodiment, FIG. 5 is a schematic front view showing a conventional example, and FIG. 6 is a schematic front view showing a different conventional example. 41, 42, 43... Hologram diffraction grating substrate,
44... Transparent base material, 44a, 44b, 44c... Mounting surface.
Claims (1)
基板を設け、これらのホログラム回折格子基板の
相対的配置を決定する取付け面を持つ形状に形成
され各々の取付け面に対応するホログラム回折格
子基板が貼付される透明基材を設けたことを特徴
とする光磁気ピツクアツプ。 A plurality of hologram diffraction grating substrates having different functions are provided, the hologram diffraction grating substrates are formed into a shape with mounting surfaces that determine the relative arrangement of these hologram diffraction grating substrates, and a hologram diffraction grating substrate corresponding to each mounting surface is attached. A magneto-optical pickup characterized by having a transparent base material.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988037847U JPH0743778Y2 (en) | 1988-03-23 | 1988-03-23 | Magneto-optical pickup |
| US07/294,466 US5115423A (en) | 1988-01-07 | 1989-01-06 | Optomagnetic recording/reproducing apparatus |
| US07/833,012 US5278817A (en) | 1988-01-07 | 1992-02-10 | Optical pick-up for use with an opto-magnetic signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988037847U JPH0743778Y2 (en) | 1988-03-23 | 1988-03-23 | Magneto-optical pickup |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01140631U true JPH01140631U (en) | 1989-09-26 |
| JPH0743778Y2 JPH0743778Y2 (en) | 1995-10-09 |
Family
ID=31264421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988037847U Expired - Lifetime JPH0743778Y2 (en) | 1988-01-07 | 1988-03-23 | Magneto-optical pickup |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743778Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62219340A (en) * | 1986-03-20 | 1987-09-26 | Fujitsu Ltd | Light pickup |
-
1988
- 1988-03-23 JP JP1988037847U patent/JPH0743778Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62219340A (en) * | 1986-03-20 | 1987-09-26 | Fujitsu Ltd | Light pickup |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0743778Y2 (en) | 1995-10-09 |
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