JPS6161622U - - Google Patents

Info

Publication number

JPS6161622U

JPS6161622U JP14633284U JP14633284U JPS6161622U JP S6161622 U JPS6161622 U JP S6161622U JP 14633284 U JP14633284 U JP 14633284U JP 14633284 U JP14633284 U JP 14633284U JP S6161622 U JPS6161622 U JP S6161622U

Authority

JP

Japan

Prior art keywords

optical system

optical

reading device

movement amount

detection means

Prior art date

1984-09-27

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

• Espacenet
• Global Dossier
• Discuss

• 230000003287 optical effect Effects 0.000 claims description 18
• 238000001514 detection method Methods 0.000 claims description 6
• 230000004069 differentiation Effects 0.000 claims 1
• 230000001678 irradiating effect Effects 0.000 claims 1
• 238000004804 winding Methods 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 4
• 230000004048 modification Effects 0.000 description 1
• 238000012986 modification Methods 0.000 description 1