In measuring the flame temperature and radiative properties, the light field camera is subject to the visible bands of the spectral snapshot measurement in a single shot. In this paper, the infrared light field camera is proposed to improve the spectral range of detection. The effects of the participating media on the infrared light field imaging are clarified. The temperature detection ranges of visible, near-infrared, and mid-infrared spectral bands are analyzed. The coupling effects of radiative properties of gas and soot on the mid-infrared light field imaging are compared. The light field imaging results show that the temperature detection range in the mid-infrared band is twice as much as that in the visible band. The gas and soot radiative properties have recognizable effects on the mid-infrared light field images. The absorption coefficient takes the primary role, while the scattering effects by 0.275. The mid-infrared light field camera is used to take snapshots of the flame. The temperature detection range is wider than the visible band, the gas and soot laden changes the flame structure. This work can be used as theoretical support for the design and application of infrared light field camera to diagnose the flame temperature and radiation properties.

在测量火焰温度和辐射特性时，光场相机在单次拍摄中受到光谱快照测量的可见波段的影响。在本文中，提出了红外光场相机来提高检测的光谱范围。阐明了参与介质对红外光场成像的影响。分析了可见光、近红外和中红外光谱波段的温度检测范围。比较了气体和烟尘的辐射特性对中红外光场成像的耦合效应。光场成像结果表明，中红外波段的温度探测范围是可见波段的两倍。气体和烟尘的辐射特性对中红外光场图像具有可识别的影响。吸收系数起主要作用，而散射作用起0.275。中红外光场相机用于拍摄火焰的快照。温度检测范围比可见波段更宽，气体和烟尘改变了火焰结构。该工作可为红外光场相机的设计与应用提供理论支持，用于诊断火焰温度和辐射特性。