JPS6424320U - - Google Patents
Info
- Publication number
- JPS6424320U JPS6424320U JP11799787U JP11799787U JPS6424320U JP S6424320 U JPS6424320 U JP S6424320U JP 11799787 U JP11799787 U JP 11799787U JP 11799787 U JP11799787 U JP 11799787U JP S6424320 U JPS6424320 U JP S6424320U
- Authority
- JP
- Japan
- Prior art keywords
- prism
- optical device
- laser beam
- laser optical
- laser
- 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 7
- 230000001154 acute effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案によるレーザ光学装置の第１実
施例を示す平面配置図、第２図はそのプリズムの
上下面に直角な平面で切つた断面図、第３図は本
考案の第２実施例を示す平面配置図、第４図はそ
のプリズムの上下面に直角な平面で切つた断面図
、第５図は本考案のレーザ光学装置を適用した光
ピツクアツプ装置を示す配置図、第６図は従来装
置の欠点の説明に供する断面図である。
１０…レーザ光源、１２，１３…プリズム、１
４…プリズム取付面。
FIG. 1 is a plan layout diagram showing a first embodiment of a laser optical device according to the present invention, FIG. 2 is a sectional view taken along a plane perpendicular to the upper and lower surfaces of the prism, and FIG. 3 is a second embodiment of the present invention. FIG. 4 is a sectional view taken along a plane perpendicular to the upper and lower surfaces of the prism; FIG. 5 is a layout diagram showing an optical pickup device to which the laser optical device of the present invention is applied; FIG. 6 is a plan view showing an example. FIG. 2 is a cross-sectional view for explaining the drawbacks of the conventional device. 10... Laser light source, 12, 13... Prism, 1
4... Prism mounting surface.
Claims (1)
一形状の２個のプリズムを順次介してスポツト形
状が円形状のレーザ光線に補正するレーザ光学装
置において、 一方の上記プリズムの入射側の面に幾何学的に
対応する他方の上記プリズムの面を、レーザ光線
の射出側の面になるように両プリズムを配置した
ことを特徴とするレーザ光学装置。 (2) 上記プリズムとして、不等辺三角形プリズ
ム（不等辺三角形プリズムのレーザ光線が照射さ
れない部分を切り欠いて四角形としたプリズムを
含む）を用い、その鋭角を挾む両面を入射面及び
射出面とし、かつ、内面で反射偏向されることが
ないように配置したことを特徴とする実用新案登
録請求の範囲第１項に記載のレーザ光学装置。[Claims for Utility Model Registration] (1) In a laser optical device that corrects a laser beam with an elliptical spot shape into a laser beam with a circular spot shape through two prisms of the same shape, one of the above A laser optical device characterized in that both prisms are arranged so that the surface of the other prism that corresponds geometrically to the surface on the entrance side of the prism becomes the surface on the exit side of the laser beam. (2) As the above prism, a scalene triangular prism (including a scalene triangular prism whose part that is not irradiated with the laser beam is cut out and made into a square shape) is used, and both surfaces of the scalene prism that sandwich the acute angle are used as the entrance surface and the exit surface. 2. The laser optical device according to claim 1, wherein the laser optical device is arranged so as not to be reflected and deflected by the inner surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11799787U JPS6424320U (en) | 1987-07-31 | 1987-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11799787U JPS6424320U (en) | 1987-07-31 | 1987-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6424320U true JPS6424320U (en) | 1989-02-09 |
Family
ID=31361961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11799787U Pending JPS6424320U (en) | 1987-07-31 | 1987-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6424320U (en) |
-
1987
- 1987-07-31 JP JP11799787U patent/JPS6424320U/ja active Pending