Heating type narrow-band infrared light emitting device

The invention relates to a heating type narrow-band infrared light emitting device. In some examples, an infrared light emitting device has a heating layer sandwiched between top and bottom optical layers. The optical layer only allows narrow-band infrared light to pass through. A reflective layer may further be disposed below the bottom optical layer. This configuration greatly reduces the energy loss and can be manufactured using a simple and cost-effective method. 本发明是加热式窄波段红外光发射装置。在一些示例中，红外光发射装置具有被顶部和底部光学层夹在中间的加热层，所述光学层仅允许窄带红外光通过。可以在底部光学层的下方进一步设置反射层。这种配置极大地减少了能量损失，并且可以使用简单和低成本的方法来制造。