In recent years, with the development of precise lathe-cutting equipment, special shaped contact lenses (CL) have been crafted. However, while it is possible to manufacture such a lens, its shape evaluation has not been well-established. We conduc...
The attenuation of backscattered light through human tissue makes it difficult to measure the interferometric signal with high accuracy. We present a new method that combines the originally developed Time Domain-OCT (TD-OCT) technique with Ghost I...
Nofel C. Lagrosas   Hiroaki Kuze   Tatsuo Shiina   
SPIE FUTURE SENSING TECHNOLOGIES 2021 11914 2021年
Nighttime clouds are detected using a camera without a NIR-cut filter by exploring the pixel value distribution in each red, green, and blue (RGB) color space from clear and 100% cloudy sky images. The removal of the NIR-cut filter enhances the pi...
29TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 29) 237 2020年
The LED mini lidar was improved to monitor Raman scattering echoes. The Raman scattering signal indicates a certain gas concentration and it can distinguish the target from the other materials. It is so weak, 1/1000 of Mie scattering echoes, but e...
Prane Mariel Ong   Nofel Lagrosas   Tatsuo Shiina   Hiroaki Kuze   
29TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 29) 237 2020年
The combined use of remote sensing and in-situ monitoring instruments could help improve the assessment of near-surface aerosol properties. In this paper, we analyze the diurnal behavior of aerosol extinction coefficients, alpha(Ext)(lambda), at l...
Prane Mariel B. Ong   Tatsuo Shiina   Naohiro Manago   Hiroaki Kuze   Hiroki Senshu   Naohito Otobe   George Hashimoto   Yasuhiro Kawabata   
EPJ Web of Conferences 176 2018年4月 [査読有り]
A compact LED lidar was constructed and fieldtested with the aim to observe the Mars' dust devils. To be able to fit it on the Mars rover, a specialized Cassegrain telescope was designed to be within a 10 cm-cube, with a field of view of 3mrad. Th...