CEMENTED LENS AND ON-VEHICLE CAMERA

To provide a cemented lens capable of suppressing turbidity in the bonded layer.SOLUTION: A cemented lens 19 comprises: a first lens 31 having a convex surface 31A; a second lens 33 having a concave surface 33A; and joint layer 35 joining the convex 31A and the concave surface 33A. The joint layer 3...

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Bibliographic Details
Main Authors ISHIKAWA TOMONORI, FUJIWARA OSAMU, MASUI SOJI, AOKI KOJI, KOZUKA KATSUSHI
Format Patent
LanguageEnglish
Japanese
Published 24.01.2019
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:To provide a cemented lens capable of suppressing turbidity in the bonded layer.SOLUTION: A cemented lens 19 comprises: a first lens 31 having a convex surface 31A; a second lens 33 having a concave surface 33A; and joint layer 35 joining the convex 31A and the concave surface 33A. The joint layer 35 contains a resin 37 and a gap agent 39. The particles constituting the gap agent has preferably spherical shape. The gap agent preferably consists of an organic composition. The absolute value of the difference between the refractive index of the gap agent and the refractive index of the resin is preferably 0.01 or less.SELECTED DRAWING: Figure 3 【課題】接合層における白濁を抑制できる接合レンズ及び車載カメラを提供する。【解決手段】接合レンズ１９は、凸面３１Ａを備える第１のレンズ３１と、凹面３３Ａを備える第２のレンズ３３と、前記凸面３１Ａと前記凹面３３Ａとを接合する接合層３５と、を備える。前記接合層３５は、樹脂３７及びギャップ剤３９を含む。前記ギャップ剤を構成する粒子の形状は球形であることが好ましい。前記ギャップ剤は有機組成物から成ることが好ましい。前記ギャップ剤の屈折率と前記樹脂の屈折率との差の絶対値が０．０１以下であることが好ましい。【選択図】図３
Bibliography:Application Number: JP20170128873