JPH01159223U - - Google Patents

Info

Publication number

JPH01159223U

JPH01159223U JP5645588U JP5645588U JPH01159223U JP H01159223 U JPH01159223 U JP H01159223U JP 5645588 U JP5645588 U JP 5645588U JP 5645588 U JP5645588 U JP 5645588U JP H01159223 U JPH01159223 U JP H01159223U

Authority

JP

Japan

Prior art keywords

lens

diffraction grating

optical head

semiconductor laser

hologram diffraction

Prior art date

1988-04-26

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

• 230000003287 optical effect Effects 0.000 claims description 4
• 239000004065 semiconductor Substances 0.000 claims 2
• 239000003989 dielectric material Substances 0.000 claims 1
• 239000000758 substrate Substances 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 2