JPH02101322U - - Google Patents
Info
- Publication number
- JPH02101322U JPH02101322U JP720289U JP720289U JPH02101322U JP H02101322 U JPH02101322 U JP H02101322U JP 720289 U JP720289 U JP 720289U JP 720289 U JP720289 U JP 720289U JP H02101322 U JPH02101322 U JP H02101322U
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical
- disk
- emitting element
- objective lens
- 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 14
- 238000001514 detection method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図は本考案に係る光ピツクアツプの光学装
置を示す平面図、第２図はその出光面の部分を示
す拡大図、第３図は従来の光学的信号記録再生装
置の構成図、第４図は第３図に示したプリズムの
詳細図である。
１…半導体レーザ（発光素子）、５…対物レン
ズ、２０…プリズム、２０ａ…傾斜光学面、２０
ｂ…第１の光学面、２０ｄ…第２の光学面、２１
，２４…受光素子。
FIG. 1 is a plan view showing the optical device of the optical pickup according to the present invention, FIG. 2 is an enlarged view showing the light emitting surface portion thereof, FIG. 3 is a configuration diagram of a conventional optical signal recording/reproducing device, and FIG. The figure is a detailed view of the prism shown in FIG. 3. DESCRIPTION OF SYMBOLS 1... Semiconductor laser (light emitting element), 5... Objective lens, 20... Prism, 20a... Inclined optical surface, 20
b...First optical surface, 20d...Second optical surface, 21
, 24... Light receiving element.
Claims (1)
をデイスクの記録面に集光させる対物レンズと、
デイスクの記録面から反射された戻り光を検知し
てデイスクの記録面に集光されたスポツトのエラ
ーを検知する受光素子と、上記発光素子と対物レ
ンズと受光素子の光路に位置するプリズムとから
成り、 前記プリズムには、発光素子から発せられた検
知光が入射される傾斜光学面と、プリズム内を通
過した上記検知光を対物レンズの方向へ透過させ
る第１の光学面と、デイスクの記録面から反射さ
れ前記第１の光学面を透過しさらに前記傾斜光学
面によつて反射された検知光が垂直に透過されて
前記受光素子へ送られる第２の光学面とが形成さ
れていることを特徴とする光ピツクアツプの光学
装置。[Claims for Utility Model Registration] A light-emitting element; an objective lens that focuses detection light emitted from the light-emitting element onto a recording surface of a disk;
A light-receiving element that detects return light reflected from the recording surface of the disk to detect an error in a spot focused on the recording surface of the disk, and a prism located in the optical path of the light-emitting element, the objective lens, and the light-receiving element. The prism includes an inclined optical surface on which the detection light emitted from the light emitting element is incident, a first optical surface that transmits the detection light that has passed through the prism in the direction of the objective lens, and a recording surface on the disk. a second optical surface is formed, through which detection light reflected from the surface, transmitted through the first optical surface, and further reflected by the inclined optical surface is vertically transmitted and sent to the light receiving element. An optical device for optical pickups featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP720289U JPH02101322U (en) | 1989-01-24 | 1989-01-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP720289U JPH02101322U (en) | 1989-01-24 | 1989-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02101322U true JPH02101322U (en) | 1990-08-13 |
Family
ID=31212019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP720289U Pending JPH02101322U (en) | 1989-01-24 | 1989-01-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02101322U (en) |
-
1989
- 1989-01-24 JP JP720289U patent/JPH02101322U/ja active Pending
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