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Bio-inspired hemispherical compound eye camera

机译:生物启发半球形复合眼相机

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摘要

Compound eyes in arthropods demonstrate distinct imaging characteristics from human eyes, with wide angle field of view, low aberrations, high acuity to motion and infinite depth of field. Artificial imaging systems with similar geometries and properties are of great interest for many applications. However, the challenges in building such systems with hemispherical, compound apposition layouts cannot be met through established planar sensor technologies and conventional optics. We present our recent progress in combining optics, materials, mechanics and integration schemes to build fully functional artificial compound eye cameras. Nearly full hemispherical shapes (about 160 degrees) with densely packed artificial ommatidia were realized. The number of ommatidia (180) is comparable to those of the eyes of fire ants and bark beetles. The devices combine elastomeric compound optical elements with deformable arrays of thin silicon photodetectors, which were fabricated in the planar geometries and then integrated and elastically transformed to hemispherical shapes. Imaging results and quantitative ray-tracing-based simulations illustrate key features of operation. These general strategies seem to be applicable to other compound eye devices, such as those inspired by moths and lacewings (refracting superposition eyes), lobster and shrimp (reflecting superposition eyes), and houseflies (neural superposition eyes).
机译:节肢动物中的复合眼睛展示了人眼的明显成像特征,具有广角场景,低差像差,高敏感,运动和无限景深。具有类似几何和性质的人工成像系统对于许多应用来说都很有兴趣。然而,通过建立的平面传感器技术和传统光学器件,不能满足建立具有半球形,复合的和解布局的这种系统的挑战。我们在结合光学,材料,力学和集成方案方面展示了我们最近的进展,以构建全功能性的人造复合眼镜。实现了几乎全半球形状(约160度),含有密集包装的人工ommatidia。 OMMATIDIA(180)的数量与消防蚂蚁和树皮甲虫的眼睛相当。该器件将弹性化合物光学元件与可变形的薄硅光电探测器组合,它们在平面几何形状中制造,然后整合并弹性地转化为半球形。成像结果和基于定量的基于射线描绘的模拟说明了操作的关键特征。这些一般策略似乎适用于其他复合眼设备,例如受飞蛾和叶子(折射叠加眼睛),龙虾和虾(反射叠加眼睛)和储物(神经叠加眼睛)的那些。

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