JPS6451837U - - Google Patents

Info

Publication number

JPS6451837U

JPS6451837U JP14860787U JP14860787U JPS6451837U JP S6451837 U JPS6451837 U JP S6451837U JP 14860787 U JP14860787 U JP 14860787U JP 14860787 U JP14860787 U JP 14860787U JP S6451837 U JPS6451837 U JP S6451837U

Authority

JP

Japan

Prior art keywords

knife edge

optical disk

laser beam

reflector plate

beam shape

Prior art date

1987-09-29

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

• 238000000034 method Methods 0.000 claims description 2
• 230000003287 optical effect Effects 0.000 claims 3
• 238000007689 inspection Methods 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 3
• 238000005259 measurement Methods 0.000 description 1