Diaphragm, infrared module and infrared imaging equipment

The invention discloses a diaphragm, an infrared module and infrared imaging equipment. The diaphragm comprises a main body, one side of the main body is covered with a black coating, the other side of the main body is covered with a high-reflectivity coating, and the main body is provided with an opening for light to pass through. The diaphragm is added in the infrared module to effectively inhibit heat radiation from the inside, so that stray light is reduced, and the contrast ratio of infrared imaging is improved. 本发明公开了一种光阑、红外模组及红外成像设备，光阑包括主体，且所述主体一侧覆盖有黑色涂层，另一侧覆盖有高反射率涂层，且所述主体上开设有供光线通过的开孔。本发明通过在红外模组中添加光阑来有效抑制来自内部的热辐射，由此减少杂散光，提高红外成像的对比度。