JPS6186827U - - Google Patents
Info
- Publication number
- JPS6186827U JPS6186827U JP16977084U JP16977084U JPS6186827U JP S6186827 U JPS6186827 U JP S6186827U JP 16977084 U JP16977084 U JP 16977084U JP 16977084 U JP16977084 U JP 16977084U JP S6186827 U JPS6186827 U JP S6186827U
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor laser
- objective lens
- optical head
- reflecting mirrors
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims 1
Description
図面は本考案に係る光学ヘツドの一実施例を示
す説明図である。
１０……光学ヘツド、１２……半導体レーザ、
１４……回折格子、１６……偏光ビームスプリツ
タ、１８……多重反射鏡、２０……四分の一波長
板、２２……対物レンズ、２４……光デイスク、
３０……第１の反射鏡、３２……第２の反射鏡、
３４……光透過部。
The drawing is an explanatory view showing one embodiment of the optical head according to the present invention. 10... Optical head, 12... Semiconductor laser,
14... Diffraction grating, 16... Polarizing beam splitter, 18... Multiple reflecting mirror, 20... Quarter wavelength plate, 22... Objective lens, 24... Optical disk,
30...first reflecting mirror, 32...second reflecting mirror,
34...Light transmitting part.
Claims (1)
で集光して光デイスク上に照射することにより情
報の書き込み、または読み取りを行う光学ヘツド
において、半導体レーザから対物レンズに至る光
路中に、反射面が相対向する如く組み合わせた２
枚の反射鏡を設置し、その半導体レーザ側に位置
する方向の反射鏡は中央に光透過部を有する構造
として、両反射鏡間で光を多重反射させることを
特徴とする光学ヘツド。 In an optical head that writes or reads information by condensing a laser beam from a semiconductor laser with an objective lens and irradiating it onto an optical disk, reflective surfaces face each other in the optical path from the semiconductor laser to the objective lens. 2 combined as if
An optical head characterized in that a plurality of reflecting mirrors are installed, and the reflecting mirror located on the semiconductor laser side has a light transmitting part in the center, so that light is multiple reflected between both reflecting mirrors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16977084U JPH0433552Y2 (en) | 1984-11-08 | 1984-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16977084U JPH0433552Y2 (en) | 1984-11-08 | 1984-11-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6186827U true JPS6186827U (en) | 1986-06-06 |
| JPH0433552Y2 JPH0433552Y2 (en) | 1992-08-11 |
Family
ID=30727486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16977084U Expired JPH0433552Y2 (en) | 1984-11-08 | 1984-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433552Y2 (en) |
-
1984
- 1984-11-08 JP JP16977084U patent/JPH0433552Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0433552Y2 (en) | 1992-08-11 |