Simple retinal imaging system using a MEMS scanning mirror
Simple retinal imaging system using a MEMS scanning mirror
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使用 MEMS 扫描镜的简单视网膜成像系统
DOI：
10.1117/1.oe.57.9.095101
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发表时间：
2018
影响因子：
1.3
通讯作者：
Kazuhiro Hane
中科院分区：
文献类型：
--
作者：
Neelam Kaushik;Takashi Sasaki;Toru Nakazawa;Kazuhiro Hane
我们使用微机电系统 (MEMS) 扫描仪制造了一个简单而紧凑的扫描激光光学系统，可以将其集成到便携式健康监测设备中。与市售眼科设备中使用的检流计扫描仪和多边形扫描仪相比，该系统中使用的二维 (2-D) MEMS 扫描仪更小、重量更轻。与检流计和多边形扫描仪相比，MEMS 扫描仪有许多优点，但也有局限性。易于使用且紧凑的设备对于快速对准测量和数据采集更有用。通过测量高反射率和低反射率材料的信噪比 (SNR) 来量化系统的灵敏度。高反射率材料的SNR为10，低反射率材料的SNR约为4，这足以用于生物成像。使用 2-D MEMS 扫描仪的大扫描角度产生的失真可通过定制的 LabVIEW 程序进行实时校正。在眼科设备中使用激光时，需要重点考虑眼部安全。考虑到我们系统的规格（例如激光束的视角和波长），我们计算了热损伤和光化学损伤的最大允许光束功率。模型眼前方测得的激光强度为6 μW，远小于美国国家标准协会推荐的最大允许光束功率。
We have fabricated a simple and compact scanning laser optical system using microelectromechanical system (MEMS) scanner that can be incorporated into portable health monitoring devices. The two-dimensional (2-D) MEMS scanner used in this system is much smaller and light in weight compared to galvanometer scanners and polygon scanners used in the commercially available ophthalmic devices. MEMS scanners have many advantages and also limitations compared to galvanometer and polygon scanners. An easy to use and compact device is more useful for rapid alignment for measurement and data acquisition. Sensitivity of the system was quantified by measuring signal-to-noise ratio (SNR) for both high and low reflectivity materials. SNR was 10 for the high reflectance materials and about 4 for low reflectance materials, which is sufficient for biological imaging. Distortion generated using large scanning angle of 2-D MEMS scanner was corrected in real time by custom made LabVIEW program. Ocular safety is important to consider when using a laser for ophthalmic devices. We calculated the maximum permissible beam power for thermal damage and photochemical damage considering the specification of our system such as visual angle and wavelength of the laser beam. The measured laser intensity in the front of model eye was 6 μW, which is much smaller than the maximum permissible beam power recommended by the American National Standards Institute.
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影响因子：
1.9
作者：
WEBB, RH;HUGHES, GW;DELORI, FC
通讯作者：
DELORI, FC
两轴倾斜单镜激光扫描仪产生的光路畸变剖面研究
DOI：
--
发表时间：
2003
期刊：
影响因子：
--
作者：
M. Hafez;T. Sidler;R. Salathé
通讯作者：
R. Salathé
用于扫描视频成像仪的探测器。
影响因子：
1.9
作者：
R. Webb;G. Hughes
通讯作者：
G. Hughes
影响因子：
4
作者：
Callamaras, N;Parker, I
通讯作者：
Parker, I
影响因子：
3.6
作者：
Burns, SA;Marcos, S;Bara, S
通讯作者：
Bara, S