JPS6239231U - - Google Patents
Info
- Publication number
- JPS6239231U JPS6239231U JP13067885U JP13067885U JPS6239231U JP S6239231 U JPS6239231 U JP S6239231U JP 13067885 U JP13067885 U JP 13067885U JP 13067885 U JP13067885 U JP 13067885U JP S6239231 U JPS6239231 U JP S6239231U
- Authority
- JP
- Japan
- Prior art keywords
- holding member
- optical pickup
- lens holding
- detection beam
- reflection mechanism
- 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 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Optical Head (AREA)
Description
第1図は本考案による光ピツクアツプのビーム
反射機構の断面図、第2図はその底面図、第3図
は光ピツクアツプの光学部材の構成図、第4図は
従来の光ピツクアツプのビーム反射機構を示す断
面図である。
2……発光素子、3……回折格子、4……ビー
ムスプリツタ、7……プリズム、8……対物レン
ズ、12……受光素子、21……レンズ保持部材
、22……バランサ、22a……ビーム入射穴、
22b……テーパ面、B……検知ビーム。
Figure 1 is a sectional view of the beam reflection mechanism of the optical pickup according to the present invention, Figure 2 is its bottom view, Figure 3 is a configuration diagram of the optical components of the optical pickup, and Figure 4 is the beam reflection mechanism of the conventional optical pickup. FIG. 2... Light emitting element, 3... Diffraction grating, 4... Beam splitter, 7... Prism, 8... Objective lens, 12... Light receiving element, 21... Lens holding member, 22... Balancer, 22a... ...beam entrance hole,
22b...Tapered surface, B...Detection beam.
Claims (1)
知ビームを光デイスクの記録面に集光させる対物
レンズと、光デイスクの記録面からの反射ビーム
を検知する受光素子とが設けられているとともに
、前記対物レンズがレンズ保持部材によつて保持
されている光ピツクアツプにおいて、レンズ保持
部材の検知ビーム入射側には、ビーム入射穴が穿
設されており、且つこのビーム入射穴の周囲には
、検知ビームを反射させるためのテーパ面が形成
されていることを特徴とする光ピツクアツプのビ
ーム反射機構。 (2) テーパ面は、レンズ保持部材の検知ビーム
入射側に固定されたバランサの表面に形成されて
いる実用新案登録請求の範囲第(1)項記載の光ピ
ツクアツプのビーム反射機構。 (3) テーパ面は黒色に塗られている実用新案登
録請求の範囲第(1)項記載の光ピツクアツプのビ
ーム反射機構。[Claims for Utility Model Registration] (1) A light emitting element that generates a detection beam, an objective lens that focuses the detection beam on the recording surface of an optical disk, and a light receiver that detects the reflected beam from the recording surface of the optical disk. In the optical pickup in which the objective lens is held by a lens holding member, a beam entrance hole is formed on the detection beam incident side of the lens holding member, and the objective lens is held by a lens holding member. A beam reflection mechanism for an optical pickup characterized by a tapered surface formed around the beam entrance hole to reflect the detection beam. (2) The beam reflection mechanism for an optical pickup according to claim 1, wherein the tapered surface is formed on the surface of a balancer fixed to the detection beam incident side of the lens holding member. (3) The beam reflection mechanism of the optical pickup according to claim (1) of the utility model registration, wherein the tapered surface is painted black.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985130678U JPH0725862Y2 (en) | 1985-08-26 | 1985-08-26 | Optical pickup lens device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985130678U JPH0725862Y2 (en) | 1985-08-26 | 1985-08-26 | Optical pickup lens device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6239231U true JPS6239231U (en) | 1987-03-09 |
JPH0725862Y2 JPH0725862Y2 (en) | 1995-06-07 |
Family
ID=31028407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985130678U Expired - Lifetime JPH0725862Y2 (en) | 1985-08-26 | 1985-08-26 | Optical pickup lens device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0725862Y2 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5590037U (en) * | 1978-12-13 | 1980-06-21 | ||
JPS59171039A (en) * | 1983-03-18 | 1984-09-27 | Matsushita Electric Ind Co Ltd | Optical recording and reproducing device |
JPS6035341A (en) * | 1983-08-03 | 1985-02-23 | Sony Corp | Driving device |
JPS60105905A (en) * | 1983-11-14 | 1985-06-11 | Matsushita Electric Ind Co Ltd | Optical disc evaluating apparatus |
-
1985
- 1985-08-26 JP JP1985130678U patent/JPH0725862Y2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5590037U (en) * | 1978-12-13 | 1980-06-21 | ||
JPS59171039A (en) * | 1983-03-18 | 1984-09-27 | Matsushita Electric Ind Co Ltd | Optical recording and reproducing device |
JPS6035341A (en) * | 1983-08-03 | 1985-02-23 | Sony Corp | Driving device |
JPS60105905A (en) * | 1983-11-14 | 1985-06-11 | Matsushita Electric Ind Co Ltd | Optical disc evaluating apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0725862Y2 (en) | 1995-06-07 |