IMAGING OPTICAL SYSTEM AND IMAGING APPARATUS AND MOBILE OBJECT
To achieve a novel imaging optical system that can reduce an influence of ghost light.SOLUTION: An imaging optical system is provided, forming an image in which an imaging object is a physical body on an imaging plane. The imaging optical system is constituted with a lens system and a filter F1 arra...
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Format | Patent |
Language | English Japanese |
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05.10.2022
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Abstract | To achieve a novel imaging optical system that can reduce an influence of ghost light.SOLUTION: An imaging optical system is provided, forming an image in which an imaging object is a physical body on an imaging plane. The imaging optical system is constituted with a lens system and a filter F1 arranged from an object side toward an image side. The lens system is comprised of five groups. The filter F1 has a parallel plane plate-shape, and is arranged orthogonally to an optical axis of the lens system. A first group G1 of the lens system is comprised of a first lens L1 serving as a negative meniscus lens with a convex surface directed at an object side. A radius of curvature on an object side surface of the first lens L1: R11, a focal length of an entire system: f, a distance between an object side surface of the filter F1 and an image plane IS: Df and an overall length of the entire system:L satisfy a conditional expression: (1) 0.55<(R11/f)×(Df/L)<1.00 .SELECTED DRAWING: Figure 1
【課題】ゴースト光の影響を軽減できる新規な撮像光学系を実現する。【解決手段】撮像対象を物体とする像を、撮像面上に結像させる撮像光学系であって、前記物体の側から像側に向かってレンズ系とフィルタF1とを配してなり、前記レンズ系は5群構成で、前記フィルタF1は平行平板状で前記レンズ系の光軸に直行するように配置され、前記レンズ系の第1群G1は、物体側に凸面を向けた負メニスカスレンズである第1レンズL1により構成され、前記第1レンズL1の物体側面の曲率半径:R11、全系の焦点距離:f、前記フィルタF1の物体側面と像面ISとの距離:Df、前記全系の全長:Lが、条件式:(1) 0.55 <(R11/f)×(Df/L)< 1.00を満足する。【選択図】 図1 |
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AbstractList | To achieve a novel imaging optical system that can reduce an influence of ghost light.SOLUTION: An imaging optical system is provided, forming an image in which an imaging object is a physical body on an imaging plane. The imaging optical system is constituted with a lens system and a filter F1 arranged from an object side toward an image side. The lens system is comprised of five groups. The filter F1 has a parallel plane plate-shape, and is arranged orthogonally to an optical axis of the lens system. A first group G1 of the lens system is comprised of a first lens L1 serving as a negative meniscus lens with a convex surface directed at an object side. A radius of curvature on an object side surface of the first lens L1: R11, a focal length of an entire system: f, a distance between an object side surface of the filter F1 and an image plane IS: Df and an overall length of the entire system:L satisfy a conditional expression: (1) 0.55<(R11/f)×(Df/L)<1.00 .SELECTED DRAWING: Figure 1
【課題】ゴースト光の影響を軽減できる新規な撮像光学系を実現する。【解決手段】撮像対象を物体とする像を、撮像面上に結像させる撮像光学系であって、前記物体の側から像側に向かってレンズ系とフィルタF1とを配してなり、前記レンズ系は5群構成で、前記フィルタF1は平行平板状で前記レンズ系の光軸に直行するように配置され、前記レンズ系の第1群G1は、物体側に凸面を向けた負メニスカスレンズである第1レンズL1により構成され、前記第1レンズL1の物体側面の曲率半径:R11、全系の焦点距離:f、前記フィルタF1の物体側面と像面ISとの距離:Df、前記全系の全長:Lが、条件式:(1) 0.55 <(R11/f)×(Df/L)< 1.00を満足する。【選択図】 図1 |
Author | ICHII DAISUKE HATASHITA CHIEKO SUZUKI KENSUKE NAKANUMA HIROSHI OGINO SHIMPEI |
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DocumentTitleAlternate | 撮像光学系および撮像装置および移動体 |
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Snippet | To achieve a novel imaging optical system that can reduce an influence of ghost light.SOLUTION: An imaging optical system is provided, forming an image in... |
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Title | IMAGING OPTICAL SYSTEM AND IMAGING APPARATUS AND MOBILE OBJECT |
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