US Patent 7170689 Front converter lens
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Patent abstract
A converter lens includes a front unit and a rear unit disposed on an image side with respect to the front unit. The front unit has positive optical power and includes two positive lens elements. The two positive lens elements are spaced apart. The rear unit has negative optical power and includes a positive lens element and a negative lens element.
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US Patent 07170689 Front converter lens US Patent 7170689 Front converter lens
Infobox
Patent Number
0717068900
Patent Number
717068900
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Golden AI
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Official Website
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Infobox
Is a
Patent Jurisdiction
Patent Number
071706890
Date of Patent
January 30, 2007
0Patent Application Number
111299430
Date Filed
May 16, 2005
0Official Website
Patent Primary Examiner
Edits on 23 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
071706890
Date of Patent
January 30, 2007
0Patent Application Number
111299430
Date Filed
May 16, 2005
0Official Website
Patent Primary Examiner
Edits on 8 Jun, 2022
Golden AI
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US Patent 07170689 Front converter lens
Infobox
Is a
Patent jurisdiction
Patent number
07170689
Date of patent
January 30, 2007
Patent application number
11129943
Date Filed
May 16, 2005
Patent primary examiner
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