JPS5458035A - Image pickup device - Google Patents
Image pickup deviceInfo
- Publication number
- JPS5458035A JPS5458035A JP12425377A JP12425377A JPS5458035A JP S5458035 A JPS5458035 A JP S5458035A JP 12425377 A JP12425377 A JP 12425377A JP 12425377 A JP12425377 A JP 12425377A JP S5458035 A JPS5458035 A JP S5458035A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- signals
- error
- synchronous
- reflecting
- 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)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE: To prevent the periodic generation of disturbances in an image to be displayed by compensating the angular error of an optical scanning polygonal element due to the working error with the use of a delay circuit.
CONSTITUTION: The outer circumference of a cylinder, which is made rotatable together with an optically scanning rotatable polygonal mirror 2, is formed with a non-reflecting portion 7 except for only one portion of a reflecting portion 8 so that roraty signals 11 for detecting a preset one point in the circumferential direction of the mirror 2 are generated by light emitting and receiving elements 9 and 10. If the signals 11 are used as a reference, from which side the signals 12 for metering the reflecting surface of the mirror 2 by the elements 5 and 6 come from is judged so that the signal 12 are separated in accordance with the reflecting surface by means of a synchronous separating circuit 14. As a result, the discrepancy in the scanning synchronous time is corrected with the use of delay circuits 15 of such delay time as accords to the intrinisic angular error of the respective reflecting surfaces of the mirror 2 due to the working error, thus generating correcting synchronous signals from an overlapping circuit 16. Then, the error in an angular indexing operation of the mirror 2 is compensated. As a result, it is possible to accomplish the satisfactory image display having no periodic discrepancy with the use of such mirror which can be easily produced
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12425377A JPS5458035A (en) | 1977-10-17 | 1977-10-17 | Image pickup device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12425377A JPS5458035A (en) | 1977-10-17 | 1977-10-17 | Image pickup device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5458035A true JPS5458035A (en) | 1979-05-10 |
Family
ID=14880742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12425377A Pending JPS5458035A (en) | 1977-10-17 | 1977-10-17 | Image pickup device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5458035A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62262015A (en) * | 1986-05-07 | 1987-11-14 | Fujitsu Ltd | Rotary polygon mirror scanning system |
US4829175A (en) * | 1985-12-05 | 1989-05-09 | Fuji Photo Film Co., Ltd. | Light beam scanning apparatus, method of correcting unevenness in scanning lines in light beam scanning apparatus, method of detecting deflection of rotational axis of light beam deflector and rotational axis deflection detecting device |
-
1977
- 1977-10-17 JP JP12425377A patent/JPS5458035A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4829175A (en) * | 1985-12-05 | 1989-05-09 | Fuji Photo Film Co., Ltd. | Light beam scanning apparatus, method of correcting unevenness in scanning lines in light beam scanning apparatus, method of detecting deflection of rotational axis of light beam deflector and rotational axis deflection detecting device |
JPS62262015A (en) * | 1986-05-07 | 1987-11-14 | Fujitsu Ltd | Rotary polygon mirror scanning system |
JPH07107583B2 (en) * | 1986-05-07 | 1995-11-15 | 富士通株式会社 | Rotating polygon mirror scanning system |
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