JPS565501A - Beam converting element and its manufacture - Google Patents
Beam converting element and its manufactureInfo
- Publication number
- JPS565501A JPS565501A JP8117279A JP8117279A JPS565501A JP S565501 A JPS565501 A JP S565501A JP 8117279 A JP8117279 A JP 8117279A JP 8117279 A JP8117279 A JP 8117279A JP S565501 A JPS565501 A JP S565501A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- converting element
- circular
- beam converting
- aspect ratios
- 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
Landscapes
- Optical Elements Other Than Lenses (AREA)
Abstract
PURPOSE: To obtain the simple beam converting element which converts the laser beams of different aspect ratios to circular shapes by having the two-dimensional shape which becomes concave in the convex and orthogonal directions in the one- dimensional direction and making the curvature ratios of both faces equal to the aspect ratios of the laser beams.
CONSTITUTION: In the case of a semiconductor laser 10 of double-hetero structure, its beam waist is about 0.1μm×0.5μm and the radiated light 13 of the semiconductor laser becomes the laser 13 of an elliptical shape which has a spread to 40° or more and is long in the Y direction owing to diffraction phenomena. To convert the laser light having te elliptical shape long in the Y direction to a circular shape, the problem may be solved by inserting a laser beam converting element 12 which is a convex lens in the Y direction and has a concave lens in the X direction into the optical path. Namely, circular laser light 14 is obtained by selecting the lens curvatures of both lenses. Hence, the simple beam converting element which converts the laser beams differing in a radiation angle with aspect ratios to circular beams may be obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8117279A JPS565501A (en) | 1979-06-27 | 1979-06-27 | Beam converting element and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8117279A JPS565501A (en) | 1979-06-27 | 1979-06-27 | Beam converting element and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS565501A true JPS565501A (en) | 1981-01-21 |
Family
ID=13739034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8117279A Pending JPS565501A (en) | 1979-06-27 | 1979-06-27 | Beam converting element and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS565501A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03232466A (en) * | 1990-02-05 | 1991-10-16 | Nissin Food Prod Co Ltd | Production of noodles |
| US5178129A (en) * | 1989-12-28 | 1993-01-12 | Kabushiki Kaisha Machida Seisakusho | Method of producing bending device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52135722A (en) * | 1976-05-06 | 1977-11-14 | Rank Organisation Ltd | Telecine device |
| JPS53100844A (en) * | 1977-02-15 | 1978-09-02 | Canon Inc | Beam shaping optical system |
| JPS559521A (en) * | 1978-07-04 | 1980-01-23 | Nec Corp | Scanning analog exposure method |
-
1979
- 1979-06-27 JP JP8117279A patent/JPS565501A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52135722A (en) * | 1976-05-06 | 1977-11-14 | Rank Organisation Ltd | Telecine device |
| JPS53100844A (en) * | 1977-02-15 | 1978-09-02 | Canon Inc | Beam shaping optical system |
| JPS559521A (en) * | 1978-07-04 | 1980-01-23 | Nec Corp | Scanning analog exposure method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5178129A (en) * | 1989-12-28 | 1993-01-12 | Kabushiki Kaisha Machida Seisakusho | Method of producing bending device |
| JPH03232466A (en) * | 1990-02-05 | 1991-10-16 | Nissin Food Prod Co Ltd | Production of noodles |
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