JPS59178613U - 光ヘツド用集光光学系 - Google Patents

光ヘツド用集光光学系

Info

Publication number
JPS59178613U
JPS59178613U JP7272183U JP7272183U JPS59178613U JP S59178613 U JPS59178613 U JP S59178613U JP 7272183 U JP7272183 U JP 7272183U JP 7272183 U JP7272183 U JP 7272183U JP S59178613 U JPS59178613 U JP S59178613U
Authority
JP
Japan
Prior art keywords
light source
collimating lens
distance
lens
collimating
Prior art date
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.)
Granted
Application number
JP7272183U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0138564Y2 (enrdf_load_stackoverflow
Inventor
豊 山中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP7272183U priority Critical patent/JPS59178613U/ja
Publication of JPS59178613U publication Critical patent/JPS59178613U/ja
Application granted granted Critical
Publication of JPH0138564Y2 publication Critical patent/JPH0138564Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Microscoopes, Condenser (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP7272183U 1983-05-16 1983-05-16 光ヘツド用集光光学系 Granted JPS59178613U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7272183U JPS59178613U (ja) 1983-05-16 1983-05-16 光ヘツド用集光光学系

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7272183U JPS59178613U (ja) 1983-05-16 1983-05-16 光ヘツド用集光光学系

Publications (2)

Publication Number Publication Date
JPS59178613U true JPS59178613U (ja) 1984-11-29
JPH0138564Y2 JPH0138564Y2 (enrdf_load_stackoverflow) 1989-11-17

Family

ID=30202855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7272183U Granted JPS59178613U (ja) 1983-05-16 1983-05-16 光ヘツド用集光光学系

Country Status (1)

Country Link
JP (1) JPS59178613U (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0138564Y2 (enrdf_load_stackoverflow) 1989-11-17

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