JPS6321902U - - Google Patents
Info
- Publication number
- JPS6321902U JPS6321902U JP11644686U JP11644686U JPS6321902U JP S6321902 U JPS6321902 U JP S6321902U JP 11644686 U JP11644686 U JP 11644686U JP 11644686 U JP11644686 U JP 11644686U JP S6321902 U JPS6321902 U JP S6321902U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- half mirror
- disk
- pickup device
- optical
- 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
Description
第１図はこの考案の一実施例による光デイスク
ピツクアツプ装置を示す斜視図、第２図は従来の
光デイスクピツクアツプ装置を示す斜視図である
。
図において、２はレーザ光源、３は対物レンズ
、４は光デイスク、６は４分割光センサ、１１は
２次曲面のハーフミラーである。なお、図中、同
一符号は同一、又は相当部分を示す。
FIG. 1 is a perspective view showing an optical disk pickup device according to an embodiment of the invention, and FIG. 2 is a perspective view showing a conventional optical disk pickup device. In the figure, 2 is a laser light source, 3 is an objective lens, 4 is an optical disk, 6 is a 4-split optical sensor, and 11 is a half mirror with a quadratic curved surface. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
物レンズを介してデイスク上に照射し、前記デイ
スクからの反射ビームを前記対物レンズ、ハーフ
ミラーを介して光センサに導くようにした光デイ
スクピツクアツプ装置において、半透過膜をもつ
板状の前記ハーフミラーを、母線が前記対物レン
ズの光軸に対して直交する２次曲面としたことを
特徴とする光デイスクピツクアツプ装置。 An optical disk pickup device in which a beam from a laser light source is irradiated onto a disk via a half mirror and an objective lens, and a reflected beam from the disk is guided to an optical sensor via the objective lens and half mirror, An optical disk pickup device characterized in that the plate-shaped half mirror having a semi-transparent film has a quadratic curved surface whose generatrix is perpendicular to the optical axis of the objective lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11644686U JPS6321902U (en) | 1986-07-29 | 1986-07-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11644686U JPS6321902U (en) | 1986-07-29 | 1986-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6321902U true JPS6321902U (en) | 1988-02-13 |
Family
ID=31001042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11644686U Pending JPS6321902U (en) | 1986-07-29 | 1986-07-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6321902U (en) |
-
1986
- 1986-07-29 JP JP11644686U patent/JPS6321902U/ja active Pending