JPS63191424U - - Google Patents
Info
- Publication number
- JPS63191424U JPS63191424U JP7944087U JP7944087U JPS63191424U JP S63191424 U JPS63191424 U JP S63191424U JP 7944087 U JP7944087 U JP 7944087U JP 7944087 U JP7944087 U JP 7944087U JP S63191424 U JPS63191424 U JP S63191424U
- Authority
- JP
- Japan
- Prior art keywords
- optical pickup
- tube
- hologram element
- optical
- pickup device
- 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
- 230000003287 optical effect Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
Landscapes
- Holo Graphy (AREA)
- Optical Head (AREA)
Description
第１図は本考案による光ピツクアツプ装置のオ
プトチユーブの一実施例を示す縦断面図、第２図
は光ピツクアツプ装置の光学素子の配置を示す配
置図、第３図は光ピツクアツプ装置の一部を切り
欠いて示す斜視図である。
１……レーザダイオード、２……ホログラム素
子、１０……オプトチユーブ、１１……中心孔、
１２……貫通孔、１３……吸光処理。
FIG. 1 is a vertical sectional view showing an embodiment of an optical tube of an optical pickup device according to the present invention, FIG. 2 is a layout diagram showing the arrangement of optical elements of the optical pickup device, and FIG. 3 is a part of the optical pickup device. FIG. 2 is a cutaway perspective view. 1...Laser diode, 2...Hologram element, 10...Optotube, 11...Center hole,
12...Through hole, 13...Light absorption treatment.
Claims (1)
と共に、他端部にホログラム素子を備え、かつ、
側面に上記ホログラム素子によつて回折された戻
り光線を通過させる貫通孔が穿設されている光ピ
ツクアツプ装置のオプトチユーブにおいて、 少なくとも中心孔の内周面に吸光処理を施した
ことを特徴とする光ピツクアツプ装置のオプトチ
ユーブ。[Claims for Utility Model Registration] Having a cylindrical shape, equipped with a laser light source at one end, and equipped with a hologram element at the other end, and
An opto-tube for an optical pickup device having a through-hole formed on the side surface through which the return light beam diffracted by the hologram element passes, characterized in that at least the inner peripheral surface of the center hole is subjected to a light-absorbing treatment. Optical tube for optical pickup equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7944087U JPS63191424U (en) | 1987-05-26 | 1987-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7944087U JPS63191424U (en) | 1987-05-26 | 1987-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63191424U true JPS63191424U (en) | 1988-12-09 |
Family
ID=30929300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7944087U Pending JPS63191424U (en) | 1987-05-26 | 1987-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63191424U (en) |
-
1987
- 1987-05-26 JP JP7944087U patent/JPS63191424U/ja active Pending