JPS5450344A - Optical scanner - Google Patents
Optical scannerInfo
- Publication number
- JPS5450344A JPS5450344A JP11639877A JP11639877A JPS5450344A JP S5450344 A JPS5450344 A JP S5450344A JP 11639877 A JP11639877 A JP 11639877A JP 11639877 A JP11639877 A JP 11639877A JP S5450344 A JPS5450344 A JP S5450344A
- Authority
- JP
- Japan
- Prior art keywords
- scanning direction
- scanning
- plane
- cylindrical lens
- auxiliary
- 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
- Mechanical Optical Scanning Systems (AREA)
Abstract
PURPOSE:To make it possible to easily vary the length of a scanning spot in the auxiliary scanning direction by moving a cylindrical lens in the direction of the optical axis. CONSTITUTION:A projecting lens 3 and a cylindrical lens 20 are arranged between a rotary polygonal mirror 2 fro reflecting the optical flux from a light source and a scanning plane 4. The cylindrical lens 20 has a refractive power only in the auxiliary scanning direction and is made movable in the optical axis in front of the scanning plane 4. This plane 4 is removed from the focal point 22 concerned with the auxiliary scanning direction 21, and the focal point 24 concerned with the scanning direction 23 is moved to become coincident with the scanning plane 4. Thus, it is possible to form and optical image which has the minimum extension in the scanning direction and which is elongated in the auxiliary scanning direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11639877A JPS5450344A (en) | 1977-09-28 | 1977-09-28 | Optical scanner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11639877A JPS5450344A (en) | 1977-09-28 | 1977-09-28 | Optical scanner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5450344A true JPS5450344A (en) | 1979-04-20 |
Family
ID=14686045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11639877A Pending JPS5450344A (en) | 1977-09-28 | 1977-09-28 | Optical scanner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5450344A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62275214A (en) * | 1986-05-23 | 1987-11-30 | Hitachi Ltd | Recording optical system |
-
1977
- 1977-09-28 JP JP11639877A patent/JPS5450344A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62275214A (en) * | 1986-05-23 | 1987-11-30 | Hitachi Ltd | Recording optical system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20041001 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060328 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20060822 |