JPS5476177A - Optical reader - Google Patents
Optical readerInfo
- Publication number
- JPS5476177A JPS5476177A JP14267677A JP14267677A JPS5476177A JP S5476177 A JPS5476177 A JP S5476177A JP 14267677 A JP14267677 A JP 14267677A JP 14267677 A JP14267677 A JP 14267677A JP S5476177 A JPS5476177 A JP S5476177A
- Authority
- JP
- Japan
- Prior art keywords
- barrel
- lens
- light source
- optical system
- structural body
- 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
- Optical Head (AREA)
Abstract
PURPOSE: To make possible a driving method for optical path and focus position controlling which is of small capacity, is mechanically stable and suitable for mass production by disposing a focusing optical system, semiconductor light source and photo detector from the informaftion structural body side in this order on a straight line within the same lens-barrel.
CONSTITUTION: A condensing lens group 8, semitransparent mirror 10 and photo setector 11 are disposed within a lens-barrel 12 on one straight line as shown in the figure. The light source of a read beam is placed on the outside and the beam enters the inside of the lens-barrel 12 through the beam incident window 13 provided to the lens-barrel 12. It is then reflected by the semi-transparent mirror 10 and is condensed onto the information structural body 14 by the condensing lens group 9. The read beam having been reflected and modulated by the structural body 14 again transmits through the lens group 9 and mirror 10, then enters the detector 11 where it is converted to an electric signal. The use of a semiconductor laser for the beam light source micro-miniaturizes the light source. In the miniature read optical system, the focal position of the optical system may be moved by supporting the lens-barrel 12 on a T-form leaf spring 18 and electromagnetically driving the spring 18.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14267677A JPS5476177A (en) | 1977-11-30 | 1977-11-30 | Optical reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14267677A JPS5476177A (en) | 1977-11-30 | 1977-11-30 | Optical reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5476177A true JPS5476177A (en) | 1979-06-18 |
Family
ID=15320910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14267677A Pending JPS5476177A (en) | 1977-11-30 | 1977-11-30 | Optical reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5476177A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5724033A (en) * | 1980-07-18 | 1982-02-08 | Sharp Corp | Pickup device |
JPS62142723U (en) * | 1986-02-27 | 1987-09-09 |
-
1977
- 1977-11-30 JP JP14267677A patent/JPS5476177A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5724033A (en) * | 1980-07-18 | 1982-02-08 | Sharp Corp | Pickup device |
JPS62142723U (en) * | 1986-02-27 | 1987-09-09 |
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