JPS63193221U - - Google Patents

Info

Publication number

JPS63193221U

JPS63193221U JP1987081957U JP8195787U JPS63193221U JP S63193221 U JPS63193221 U JP S63193221U JP 1987081957 U JP1987081957 U JP 1987081957U JP 8195787 U JP8195787 U JP 8195787U JP S63193221 U JPS63193221 U JP S63193221U

Authority

JP

Japan

Prior art keywords

parallel beam

lens

recording medium

information recording

semiconductor laser

Prior art date

1987-05-28

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
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• 230000003287 optical effect Effects 0.000 claims description 7
• 239000004065 semiconductor Substances 0.000 claims description 4
• 230000008878 coupling Effects 0.000 claims description 2
• 238000010168 coupling process Methods 0.000 claims description 2
• 238000005859 coupling reaction Methods 0.000 claims description 2
• 238000010586 diagram Methods 0.000 description 9
• 238000001514 detection method Methods 0.000 description 2
• 238000002834 transmittance Methods 0.000 description 1