OPTICAL LENS

An optical lens is provided. The optical lens includes, in order from an object side to an image-forming side, a first lens having negative refractive power, a second lens having negative refractive power, a third lens having refractive power and having an Abbe number Vd3, a cemented lens having ref...

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Bibliographic Details
Main Authors Cheng Shuo-Hsien, Chen Jung-Yao, Chang Yu-Min
Format Patent
LanguageEnglish
Published 05.10.2017
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:An optical lens is provided. The optical lens includes, in order from an object side to an image-forming side, a first lens having negative refractive power, a second lens having negative refractive power, a third lens having refractive power and having an Abbe number Vd3, a cemented lens having refractive power, and a fourth lens having refractive power and having an Abbe number Vd4, wherein 15≦Vd3 and/or Vd3≦30, and 60≦Vd4 and/or Vd4≦85.
Bibliography:Application Number: US201715458068