Schonbrun Ethan, Möller Guðfríður, Di Caprio Giuseppe
Opt Lett. 2014 Mar 15;39(6):1433-6. doi: 10.1364/OL.39.001433.
Digital cameras would be colorblind if they did not have pixelated color filters integrated into their image sensors. Integration of conventional fixed filters, however, comes at the expense of an inability to modify the camera's spectral properties. Instead, we demonstrate a micropolarizer-based camera that can reconfigure its spectral response. Color is encoded into a linear polarization state by a chiral dispersive element and then read out in a single exposure. The polarization encoded color camera is capable of capturing three-color images at wavelengths spanning the visible to the near infrared.
如果数码相机的图像传感器没有集成像素化彩色滤光片,那么它们将是色盲的。然而,集成传统的固定滤光片会牺牲相机修改光谱特性的能力。相反,我们展示了一种基于微偏振器的相机,它可以重新配置其光谱响应。颜色通过手性色散元件编码为线性偏振状态,然后在单次曝光中读出。偏振编码彩色相机能够在从可见光到近红外的波长范围内捕获三色图像。