JPH0185928U - - Google Patents

Info

Publication number

JPH0185928U

JPH0185928U JP17881887U JP17881887U JPH0185928U JP H0185928 U JPH0185928 U JP H0185928U JP 17881887 U JP17881887 U JP 17881887U JP 17881887 U JP17881887 U JP 17881887U JP H0185928 U JPH0185928 U JP H0185928U

Authority

JP

Japan

Prior art keywords

notch

detection device

position detection

optical axis

rotational position

Prior art date

1987-11-26

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

• 238000001514 detection method Methods 0.000 claims description 4
• 230000003287 optical effect Effects 0.000 claims description 2