JPS5283238A - Optical scanner - Google Patents
Optical scannerInfo
- Publication number
- JPS5283238A JPS5283238A JP15813375A JP15813375A JPS5283238A JP S5283238 A JPS5283238 A JP S5283238A JP 15813375 A JP15813375 A JP 15813375A JP 15813375 A JP15813375 A JP 15813375A JP S5283238 A JPS5283238 A JP S5283238A
- Authority
- JP
- Japan
- Prior art keywords
- hologram
- optical scanner
- order light
- moved
- range
- 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)
- Mechanical Optical Scanning Systems (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
PURPOSE: To preclude noises in reading a bar code by cutting out a hologram in such a way that, when the hologram is moved relatively with respect to a light beam, the imaging range of first order light lies in the range in which the images of zero and second order light are movable when the hologram is not moved.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15813375A JPS5283238A (en) | 1975-12-30 | 1975-12-30 | Optical scanner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15813375A JPS5283238A (en) | 1975-12-30 | 1975-12-30 | Optical scanner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5283238A true JPS5283238A (en) | 1977-07-12 |
Family
ID=15664988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15813375A Pending JPS5283238A (en) | 1975-12-30 | 1975-12-30 | Optical scanner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5283238A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6039273A (en) * | 1983-08-12 | 1985-03-01 | Fujitsu Ltd | Optical reader |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502553A (en) * | 1973-05-04 | 1975-01-11 |
-
1975
- 1975-12-30 JP JP15813375A patent/JPS5283238A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502553A (en) * | 1973-05-04 | 1975-01-11 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6039273A (en) * | 1983-08-12 | 1985-03-01 | Fujitsu Ltd | Optical reader |
JPH0145108B2 (en) * | 1983-08-12 | 1989-10-02 | Fujitsu Ltd |
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