近红外微弱光信号检测镜头的研制

运用ZEMAX设计了一款大孔径、小畸变微弱光信号检测镜头,与高灵敏近红外CCD图像传感器匹配,实现了对微弱单态氧¹O₂信号的实时、快速、高准确度的检测.检测镜头相对孔径1:0.86,半像高为6.3 mm,光谱范围为1 250~1 290 nm,放大倍率为1X,畸变小于0.1%.运用AutoCAD设计光学系统的机械结构,采用双高斯对称式结构以降低成本,手动聚焦、直插式滤片切换机构方便实验的调节,检测镜头研制成功并在实验中采集到较好的微弱单态氧¹O₂信号.

Developed on the Near-infrared Weak Optical Signal Detection Lens

A weak optical signal detection lens is designed by optical design software-ZEMAX.The optical system requires small distortion and large relative aperture,which can match with the near-infrared CCD image sensor, in order to realize real-time, fast, high-precision detection of the weak singlet oxygen signal. The optical system parameters are relative aperture 1:0.86, semi-image high 6.3 mm,spectral range(1 250~1 290 nm),magnification 1X,distortion<0.1%, and manual focus. On the other hand, the mechanical structure of the optical system is design using the software-Auto CAD. The symmetrical structure is used to reduce costs and independent filter switching mechanism to facilitate the adjustment of the experiment. The detected lens successfully collects better weak singlet oxygen signals in the research experiments.