JPS5238944A - Optical system for scanning - Google Patents
Optical system for scanningInfo
- Publication number
- JPS5238944A JPS5238944A JP11504575A JP11504575A JPS5238944A JP S5238944 A JPS5238944 A JP S5238944A JP 11504575 A JP11504575 A JP 11504575A JP 11504575 A JP11504575 A JP 11504575A JP S5238944 A JPS5238944 A JP S5238944A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- scanning
- scanned
- seattered
- bear
- 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
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To permit a surface to be scanned and an optical system for illumination with which said surface is scanned to bear a given relation between the positions thereof by providing an optical system for receiving a part of a flux of light seattered on said surface to be scanned.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11504575A JPS5238944A (en) | 1975-09-23 | 1975-09-23 | Optical system for scanning |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11504575A JPS5238944A (en) | 1975-09-23 | 1975-09-23 | Optical system for scanning |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5238944A true JPS5238944A (en) | 1977-03-25 |
Family
ID=14652813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11504575A Pending JPS5238944A (en) | 1975-09-23 | 1975-09-23 | Optical system for scanning |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5238944A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5650353A (en) * | 1979-10-02 | 1981-05-07 | Ricoh Co Ltd | Minute gap holding unit |
JPS5732410A (en) * | 1980-07-14 | 1982-02-22 | Discovision Ass | Device for detecting focal error |
JPS61224144A (en) * | 1985-03-29 | 1986-10-04 | Hitachi Ltd | Focus error detector |
JPH01214810A (en) * | 1988-02-23 | 1989-08-29 | Nec Corp | Focus point detector |
-
1975
- 1975-09-23 JP JP11504575A patent/JPS5238944A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5650353A (en) * | 1979-10-02 | 1981-05-07 | Ricoh Co Ltd | Minute gap holding unit |
JPS5732410A (en) * | 1980-07-14 | 1982-02-22 | Discovision Ass | Device for detecting focal error |
JPS61224144A (en) * | 1985-03-29 | 1986-10-04 | Hitachi Ltd | Focus error detector |
JPH01214810A (en) * | 1988-02-23 | 1989-08-29 | Nec Corp | Focus point detector |
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