JPH01146207U - - Google Patents

Info

Publication number

JPH01146207U

JPH01146207U JP4037188U JP4037188U JPH01146207U JP H01146207 U JPH01146207 U JP H01146207U JP 4037188 U JP4037188 U JP 4037188U JP 4037188 U JP4037188 U JP 4037188U JP H01146207 U JPH01146207 U JP H01146207U

Authority

JP

Japan

Prior art keywords

light emitting

emitting source

positive lens

focus detection

optical system

Prior art date

1988-03-29

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

• 230000003287 optical effect Effects 0.000 claims description 10
• 238000001514 detection method Methods 0.000 claims description 5
• 238000005286 illumination Methods 0.000 claims description 4
• 238000010586 diagram Methods 0.000 description 3
• 238000003384 imaging method Methods 0.000 description 1