JPS64816U - - Google Patents
Info
- Publication number
- JPS64816U JPS64816U JP9341987U JP9341987U JPS64816U JP S64816 U JPS64816 U JP S64816U JP 9341987 U JP9341987 U JP 9341987U JP 9341987 U JP9341987 U JP 9341987U JP S64816 U JPS64816 U JP S64816U
- Authority
- JP
- Japan
- Prior art keywords
- light
- objective lens
- cover
- light beam
- recording medium
- 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 4
- 239000006059 cover glass Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図はこの考案の一実施例の側断面図、第２
図は従来の光ヘツド装置の側断面図である。
１……対物レンズ、２……対物レンズ駆動装置
、３……対物レンズ駆動装置のカバー、５……光
出入口、７……筐体、８……偏光ビームスプリツ
タ、９……コリメートレンズ、１０……半導体レ
ーザ（光源）、１４，１５……光検出器、１６…
…筐体カバー、１７……カバーガラス。なお、各
図中、同一符号は同一又は相当部分を示す。
Figure 1 is a side sectional view of one embodiment of this invention;
The figure is a side sectional view of a conventional optical head device. DESCRIPTION OF SYMBOLS 1... Objective lens, 2... Objective lens drive device, 3... Cover of objective lens drive device, 5... Light entrance/exit, 7... Housing, 8... Polarizing beam splitter, 9... Collimating lens, 10... Semiconductor laser (light source), 14, 15... Photodetector, 16...
...Case cover, 17...Cover glass. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (1)
変換する光検出手段と、前記光ビームを記録再生
可能な記録媒体面に集光照射する対物レンズと、
前記記録媒体面からの反射光を前記光検出手段に
導く光学手段と、前記対物レンンズの位置と前記
光ビームを常に調整する対物レンズ駆動装置とを
備えた光ヘツド装置において、前記対物レンズ駆
動装置のカバーと、このカバーに形成された光出
入口に設けられたカバーガラスとを備えてなるこ
とを特徴とする光ヘツド装置。 a light source, a light detection means for converting the light beam from the light source into an electrical signal, and an objective lens for condensing and irradiating the light beam onto the surface of a recordable and reproducible recording medium;
An optical head device comprising an optical means for guiding reflected light from the surface of the recording medium to the light detection means, and an objective lens driving device that constantly adjusts the position of the objective lens and the light beam, the objective lens driving device 1. An optical head device comprising: a cover; and a cover glass provided at a light entrance/exit formed in the cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9341987U JPS64816U (en) | 1987-06-19 | 1987-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9341987U JPS64816U (en) | 1987-06-19 | 1987-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS64816U true JPS64816U (en) | 1989-01-05 |
Family
ID=30955991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9341987U Pending JPS64816U (en) | 1987-06-19 | 1987-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS64816U (en) |
-
1987
- 1987-06-19 JP JP9341987U patent/JPS64816U/ja active Pending