JPH0433547Y2 - - Google Patents

Info

Publication number

JPH0433547Y2

JPH0433547Y2 JP1984157418U JP15741884U JPH0433547Y2 JP H0433547 Y2 JPH0433547 Y2 JP H0433547Y2 JP 1984157418 U JP1984157418 U JP 1984157418U JP 15741884 U JP15741884 U JP 15741884U JP H0433547 Y2 JPH0433547 Y2 JP H0433547Y2

Authority

JP

Japan

Prior art keywords

objective lens

magnetic

lens holder

magnetic circuit

focus coil

Prior art date

1984-10-17

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.)

Expired

Links

• Espacenet
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• 230000007935 neutral effect Effects 0.000 claims description 23
• 230000002093 peripheral effect Effects 0.000 claims description 4
• 230000003287 optical effect Effects 0.000 description 8
• XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
• 239000000696 magnetic material Substances 0.000 description 4
• 230000000694 effects Effects 0.000 description 3
• 238000005452 bending Methods 0.000 description 2
• 229910052742 iron Inorganic materials 0.000 description 2
• 239000000463 material Substances 0.000 description 2
• 239000002184 metal Substances 0.000 description 2
• 229910052751 metal Inorganic materials 0.000 description 2
• 230000000630 rising effect Effects 0.000 description 2
• XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
• 238000005516 engineering process Methods 0.000 description 1
• 238000000034 method Methods 0.000 description 1
• 229920001296 polysiloxane Polymers 0.000 description 1
• 230000000717 retained effect Effects 0.000 description 1
• 239000004065 semiconductor Substances 0.000 description 1
• 229910052710 silicon Inorganic materials 0.000 description 1
• 239000010703 silicon Substances 0.000 description 1