We explore integrated microcamera focus systems for array cameras. Array cameras enable wide field of view 90° to 360° high resolution (10–100 μ rad) imaging with small exit apertures (≈10 mm). Small exit apertures enable compact focus mechanisms with fast actuators. We show that a common mechanism supports ≈f/2.5 camera modules with focal lengths ranging from 25 to 60 mm. Designs for each focal length include a fixed objective lens group and an adjustable back focus group. Increasing the focal power of the front focal group enables the travel range to accommodate long focal length systems. We present design examples for both discrete and multiscale array camera systems.

中文翻译：

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分布式对焦和数字变焦

我们探索用于阵列相机的集成微相机聚焦系统。阵列摄像机可实现90°至360°高分辨率（10–100μrad）的宽视野成像，并具有较小的出射孔（≈10mm）。较小的出口孔可实现具有快速执行器的紧凑型聚焦机构。我们证明了一种常见的机制支持焦距范围从25到60 mm的≈f/ 2.5相机模块。每个焦距的设计包括一个固定的物镜组和一个可调节的后焦距组。增加前对焦组的对焦能力可使行程范围适应长焦距系统。我们提供了离散和多尺度阵列摄像机系统的设计实例。