本发明属于红外光学技术领域，特别涉及一种以蓝光LED芯片复合发射红外光的发光材料的半导体光源，以及一种适合蓝光激发的黄色和/或绿色荧光粉的光学装置。本发明所述半导体光源利用蓝光LED芯片、发射红外光的发光材料(1400‑1600nm)、适合蓝光激发的黄色(540‑570nm)和/或绿色(510‑540nm)荧光粉同时实现高效红外光谱和白光发射，具有制备工艺简单、成本低、可靠性优异、抗干扰能力强、出光效率高等特点；并且由于本发明所提供的光学装置的发射主峰波长位于1400‑1600nm，在生物和食品检测、安防、红外加温等领域具有很好的应用前景。

The invention belongs to the technical field of infrared optics, and particularly relates to a semiconductor light source of a luminescent material for compositely emitting infrared light by a blue light LED chip, and an optical device of yellow and/or green fluorescent powder suitable for blue light excitation. According to the semiconductor light source, a blue light LED chip, a luminescent material (1400-1600nm) for emitting infrared light and yellow (540-570nm) and/or green (510-540nm) fluorescent powder suitable for blue light excitation are used for simultaneously realizing high-efficiency infrared spectrum and white light emission; the preparation process is simple, the cost is low, the reliability is excellent, the anti-interference capability is high, and the light emitting efficiency is high; and moreover, the wavelength of the emission main peak of the optical device provided by the invention is 1400-1600nm, so that the optical device has a good application prospect in the fields of biological and food detection, security and protection, infrared heating and the like.