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JPS55143683A - Optical reader - Google Patents

Optical reader

Info

Publication number
JPS55143683A
JPS55143683A JP5063079A JP5063079A JPS55143683A JP S55143683 A JPS55143683 A JP S55143683A JP 5063079 A JP5063079 A JP 5063079A JP 5063079 A JP5063079 A JP 5063079A JP S55143683 A JPS55143683 A JP S55143683A
Authority
JP
Japan
Prior art keywords
mirror
light source
scanning
bar code
light
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
Application number
JP5063079A
Other languages
Japanese (ja)
Inventor
Takaaki Okamoto
Shigeo Terajima
Shoichi Yasuda
Kimio Yatsunami
Seiji Amazaki
Masahiro Horii
Yoshihiko Iwamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP5063079A priority Critical patent/JPS55143683A/en
Publication of JPS55143683A publication Critical patent/JPS55143683A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To read accurately bar code information with a scanning light focused all the time by controlling an interval between a light source and optical lens synchronizing with the vibration state of a reflex mirror while arranging the optical lens between the light source and reflex mirror.
CONSTITUTION: Light from light source 1 strikes galvanometer 3 as a reflex mirror brought under the vibration control of control method 9 through focus adjusting lens 8. Reflected light from this mirror 3 is led to scanning window 6 via a group of fixed mirrors 5 arranged at the circumference of mirror 3 to read bar code information arranged on scanning window 6. Synchronizing with the vibration state of mirror 3, an interval between light source 1 and lens 8 is controlled by control method 9 to focus the scanning line all the time even at any scanning position, so that the information will be read with accuracy without reference to the position where the bar code information is arranged.
COPYRIGHT: (C)1980,JPO&Japio
JP5063079A 1979-04-23 1979-04-23 Optical reader Pending JPS55143683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5063079A JPS55143683A (en) 1979-04-23 1979-04-23 Optical reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5063079A JPS55143683A (en) 1979-04-23 1979-04-23 Optical reader

Publications (1)

Publication Number Publication Date
JPS55143683A true JPS55143683A (en) 1980-11-10

Family

ID=12864287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5063079A Pending JPS55143683A (en) 1979-04-23 1979-04-23 Optical reader

Country Status (1)

Country Link
JP (1) JPS55143683A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01127057U (en) * 1988-02-23 1989-08-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01127057U (en) * 1988-02-23 1989-08-30

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