JPS62153621U - - Google Patents
Info
- Publication number
- JPS62153621U JPS62153621U JP3946286U JP3946286U JPS62153621U JP S62153621 U JPS62153621 U JP S62153621U JP 3946286 U JP3946286 U JP 3946286U JP 3946286 U JP3946286 U JP 3946286U JP S62153621 U JPS62153621 U JP S62153621U
- Authority
- JP
- Japan
- Prior art keywords
- light source
- laser light
- optical
- recording medium
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Description
第１図は本考案の一実施例を示す模式的な側面
図、第２図は従来の光ピツクアツプ装置を示す模
式的な側面図である。
１……半導体レーザ、２……回析格子、３……
平行平板、４……ハーフミラーコーテイング面、
５……コリメートレンズ、６……集光レンズ、７
……記録媒体、８……光検出器。
FIG. 1 is a schematic side view showing an embodiment of the present invention, and FIG. 2 is a schematic side view showing a conventional optical pickup device. 1... Semiconductor laser, 2... Diffraction grating, 3...
Parallel plate, 4...Half mirror coating surface,
5... Collimating lens, 6... Condensing lens, 7
...Recording medium, 8...Photodetector.
Claims (1)
び集光レンズを介して記録媒体上に絞り込む光学
系が備えてある光ピツクアツプ装置において、前
記レーザ光源と前記コリメートレンズとの間に前
記レーザ光源側にハーフミラー用コーデイングを
施した平行平板が光軸に対して斜めに設置してあ
り、前記平行平板で分離された前記記録媒体から
の反射光を検出する光検出器が設けてあることを
特徴とする光ピツクアツプ装置。 In an optical pickup device equipped with an optical system that focuses emitted light from a laser light source onto a recording medium through a collimating lens and a condensing lens, a half mirror is provided on the laser light source side between the laser light source and the collimating lens. A parallel flat plate provided with optical coding is installed obliquely with respect to the optical axis, and a photodetector is provided to detect reflected light from the recording medium separated by the parallel flat plate. Optical pickup device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946286U JPH0519853Y2 (en) | 1986-03-18 | 1986-03-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3946286U JPH0519853Y2 (en) | 1986-03-18 | 1986-03-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62153621U true JPS62153621U (en) | 1987-09-29 |
| JPH0519853Y2 JPH0519853Y2 (en) | 1993-05-25 |
Family
ID=30852649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3946286U Expired - Lifetime JPH0519853Y2 (en) | 1986-03-18 | 1986-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0519853Y2 (en) |
-
1986
- 1986-03-18 JP JP3946286U patent/JPH0519853Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0519853Y2 (en) | 1993-05-25 |