SET OF NEGATIVE MENISCUS LENSES, WIDE-ANGLE OPTICAL SYSTEM, IMAGING DEVICE, AND PROJECTION DEVICE

Provided is a set of negative meniscus lenses which has suitably corrected aberrations and is employed in an optical system having an angle of view of 240° or greater. The set of negative meniscus lenses is used for an optical system having an angle of view of 240° or greater, one negative meniscus...

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Bibliographic Details
Main Author TOGINO Takayoshi
Format Patent
LanguageEnglish
French
Japanese
Published 04.06.2020
Subjects
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Summary:Provided is a set of negative meniscus lenses which has suitably corrected aberrations and is employed in an optical system having an angle of view of 240° or greater. The set of negative meniscus lenses is used for an optical system having an angle of view of 240° or greater, one negative meniscus lens among the set of negative meniscus lenses is positioned closest to the object side, the set of negative meniscus lenses has a prescribed lens surface, and the prescribed lens surface is hemispherical or extends beyond the hemisphere. L'invention concerne un ensemble de lentilles ménisques négatives qui a des aberrations corrigées de manière appropriée et qui est utilisée dans un système optique ayant un angle de vision de 240° ou plus. L'ensemble de lentilles ménisques négatives est utilisé pour un système optique ayant un angle de vision de 240° ou plus, une lentille ménisque négative parmi l'ensemble de lentilles ménisques négatives est positionnée le plus près du côté objet, l'ensemble de lentilles ménisques négatives a une surface de lentille prescrite, et la surface de lentille prescrite est hémisphérique ou s'étend au-delà de l'hémisphère. 諸収差が良好に補正され、240°以上の画角を有する光学系に用いられる1組の負メニスカスレンズを提供する。 1組の負メニスカスレンズは、240°以上の画角を有する光学系に用いられる1組の負メニスカスレンズであって、1組の負メニスカスレンズのうちの1つの負メニスカスレンズは、最も物体側に位置し、1組の負メニスカスレンズは、所定のレンズ面を有し、所定のレンズ面は、半球状の面か、又は半球を超える面である。
Bibliography:Application Number: WO2018JP43785