Department of Optical System Engineering, Kumoh National Institute of Technology, Gumi, Korea.
Department of Electronic Engineering, Gachon University, Seongnam, Korea.
Technol Health Care. 2022;30(S1):243-250. doi: 10.3233/THC-228023.
Compared to benchtop ultrasound machines, mobile ultrasound machines require portable batteries when acquiring information regarding human tissues during outdoor activities.
A novel fisheye lens type was designed to address the charging issue where it is difficult to constantly track the sun. This method does not require the use of a mechanical motor that constantly tracks the sun to charge the portable batteries.
To obtain an optical solar power system, the numerical aperture (NA) and field angle must be increased. Therefore, we use the fisheye lens with the largest field angle.
The NA of the designed fisheye lens system reaches 0.75, allowing light collection of approximately ± 48∘. Additionally, the efficiency ratio of the central and surrounding areas also satisfies more than 80% at a field angle of 85∘ and more than 70% at field angles of 85∘ to 90∘, respectively.
We designed a novel fisheye lens for solar-powered mobile ultrasound machines used outdoors.
与台式超声机相比，移动超声机在户外活动中获取人体组织信息时需要便携式电池。
设计了一种新型鱼眼镜头类型，以解决在难以持续跟踪太阳时的充电问题。这种方法不需要使用不断跟踪太阳为便携式电池充电的机械马达。
为了获得光学太阳能系统，必须增加数值孔径（NA）和视场角。因此，我们使用具有最大视场角的鱼眼镜头。
设计的鱼眼镜头系统的 NA 达到 0.75，允许大约±48∘的光收集。此外，在 85∘的视场角下，中心和周围区域的效率比也分别满足 80%以上，在 85∘到 90∘的视场角下满足 70%以上。
我们为户外使用的太阳能驱动移动超声机设计了一种新型鱼眼镜头。
