JPS5484747A - Light scanner - Google Patents
Light scannerInfo
- Publication number
- JPS5484747A JPS5484747A JP15164077A JP15164077A JPS5484747A JP S5484747 A JPS5484747 A JP S5484747A JP 15164077 A JP15164077 A JP 15164077A JP 15164077 A JP15164077 A JP 15164077A JP S5484747 A JPS5484747 A JP S5484747A
- Authority
- JP
- Japan
- Prior art keywords
- holograms
- slits
- light
- half mirror
- shield plate
- 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
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
PURPOSE: To surely align scanning start point and end point on each scanning line by providing a half mirror between holograms on a rotary disc and an inspection face and providing a shield plate having slits orthogonal onto the scanning lines that the photo detector draws on the plit beams thereof.
CONSTITUTION: A multiplicity of holograms 7 are so arrayed on a rotary disc 2 that their diffraction angles vary little by little subsequently. The light from a laser light source is split with a half mirror 4 and the light having transmitted therethrough radiates an inspection face 5 and draws the scanning lines 13 of the number corresponding to the number of the holograms with the deviations in the diffraction directions of the holograms 7. These are detected with a photoelectric transducer 8 and are sent to an electric circuit system 9. The light having reflected by the half mirror 4 also similarly draws the scanning lines 13 corresponding to the number of the holograms on a shield plate 10. Since two slits 12, 12' are formed on the shield plate 10, a photo detector 11 sends the signal of the waveforms like the ones shown in the figure to the electric circuit system 8 when the light passes the slits. In the positions of the slits 12, 12' are beforehand corresponded to the start and end positions of the inspection region of the inspection face 5, then the start and end points of the signals from the transducer 8 will be known.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15164077A JPS5484747A (en) | 1977-12-19 | 1977-12-19 | Light scanner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15164077A JPS5484747A (en) | 1977-12-19 | 1977-12-19 | Light scanner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5484747A true JPS5484747A (en) | 1979-07-05 |
Family
ID=15522966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15164077A Pending JPS5484747A (en) | 1977-12-19 | 1977-12-19 | Light scanner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5484747A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS626213A (en) * | 1985-06-20 | 1987-01-13 | Fujitsu Ltd | Confirming method for scanning light of photoscanner |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4922149A (en) * | 1972-06-17 | 1974-02-27 | ||
JPS515582A (en) * | 1974-07-04 | 1976-01-17 | Sumitomo Electric Industries | HORITETORAFUROROECHIRENTEEPUDENSENNO SEIZOHOHO |
-
1977
- 1977-12-19 JP JP15164077A patent/JPS5484747A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4922149A (en) * | 1972-06-17 | 1974-02-27 | ||
JPS515582A (en) * | 1974-07-04 | 1976-01-17 | Sumitomo Electric Industries | HORITETORAFUROROECHIRENTEEPUDENSENNO SEIZOHOHO |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS626213A (en) * | 1985-06-20 | 1987-01-13 | Fujitsu Ltd | Confirming method for scanning light of photoscanner |
JPH0427525B2 (en) * | 1985-06-20 | 1992-05-12 | Fujitsu Ltd |
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