JPS54143660A - Optical system for semiconductor laser - Google Patents
Optical system for semiconductor laserInfo
- Publication number
- JPS54143660A JPS54143660A JP5184778A JP5184778A JPS54143660A JP S54143660 A JPS54143660 A JP S54143660A JP 5184778 A JP5184778 A JP 5184778A JP 5184778 A JP5184778 A JP 5184778A JP S54143660 A JPS54143660 A JP S54143660A
- Authority
- JP
- Japan
- Prior art keywords
- recording face
- spot
- image forming
- semiconductor laser
- luminous flux
- 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
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Lenses (AREA)
- Semiconductor Lasers (AREA)
Abstract
PURPOSE: To maximize the peak intensity of the spot on recording face by collimating the exit light from a semiconductor laser with a paralleling optical system of a differenct focal length in the orghogonal direction and entering the same to the pupil of an image forming lens thereby forming the beam in elliptical shape.
CONSTITUTION: Exit light from a semiconductor laser 1 is approximately collimated by a spherical lens 5c, and the beam diameter in the y (longitudinal axis) direction is magnified by a cylindrical beam expander 5d. The light out from the expander 5d passes through the image forming lens and forms its spot on the recording face 7. The luminous flux actually advancing to the recording face of this case is shown by solid lines and the luminous flux becoming 1/e2 (beam) with respect to the central intensity of the luminous flux emitted from the laser light source by dotted lines, respectively. The focal length of the lens 5c is about 6 mm and the beam diameter r with respect to the radius R of the incident pupil 8 of the image forming lens satisfies the neighborhool of r/R≈0.892. Thereby, the peak intensity of the spot on the recording face may be maximized.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5184778A JPS54143660A (en) | 1978-04-28 | 1978-04-28 | Optical system for semiconductor laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5184778A JPS54143660A (en) | 1978-04-28 | 1978-04-28 | Optical system for semiconductor laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54143660A true JPS54143660A (en) | 1979-11-09 |
| JPS6349204B2 JPS6349204B2 (en) | 1988-10-04 |
Family
ID=12898235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5184778A Granted JPS54143660A (en) | 1978-04-28 | 1978-04-28 | Optical system for semiconductor laser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54143660A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910964A (en) * | 1982-07-09 | 1984-01-20 | Canon Inc | Picture recording device |
| JPS60128320U (en) * | 1984-02-03 | 1985-08-28 | 萬世工業株式会社 | Light beam shaping device |
| JPH01127911A (en) * | 1987-11-12 | 1989-05-19 | Keyence Corp | Speckle pattern interferometer |
| JPH07297498A (en) * | 1994-03-01 | 1995-11-10 | Seiko Epson Corp | Semiconductor laser and light sensing device using it |
| JP2011186330A (en) * | 2010-03-10 | 2011-09-22 | Toshiba Corp | Laser beam scanning apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001100145A (en) | 1999-09-29 | 2001-04-13 | Sunx Ltd | Laser marker |
-
1978
- 1978-04-28 JP JP5184778A patent/JPS54143660A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910964A (en) * | 1982-07-09 | 1984-01-20 | Canon Inc | Picture recording device |
| JPH0466034B2 (en) * | 1982-07-09 | 1992-10-21 | Canon Kk | |
| JPS60128320U (en) * | 1984-02-03 | 1985-08-28 | 萬世工業株式会社 | Light beam shaping device |
| JPH01127911A (en) * | 1987-11-12 | 1989-05-19 | Keyence Corp | Speckle pattern interferometer |
| JPH07297498A (en) * | 1994-03-01 | 1995-11-10 | Seiko Epson Corp | Semiconductor laser and light sensing device using it |
| JP2011186330A (en) * | 2010-03-10 | 2011-09-22 | Toshiba Corp | Laser beam scanning apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6349204B2 (en) | 1988-10-04 |
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