JPS63185112U - - Google Patents

Info

Publication number

JPS63185112U

JPS63185112U JP7667287U JP7667287U JPS63185112U JP S63185112 U JPS63185112 U JP S63185112U JP 7667287 U JP7667287 U JP 7667287U JP 7667287 U JP7667287 U JP 7667287U JP S63185112 U JPS63185112 U JP S63185112U

Authority

JP

Japan

Prior art keywords

optical axis

ring

hole

guide protrusion

center hole

Prior art date

1987-05-21

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 6
• 230000002093 peripheral effect Effects 0.000 claims 1
• 230000001105 regulatory effect Effects 0.000 description 3
• 230000004048 modification Effects 0.000 description 2
• 238000012986 modification Methods 0.000 description 2
• 125000006850 spacer group Chemical group 0.000 description 1

Cited By (2)