海洋水色儀（Ocean Color Instrument, OCI），是使用多光譜觀測海洋表層溫度、鹽度與藻類分布的儀器，可應用於衛星漁圖、河口觀測、沿岸養殖區監測，以及軍事用途，須具有拍攝大範圍與高清影像的能力。本次研究的TWOCI海洋水色儀設計具有更好的光譜量測效率，以及小型化的體積，約為1U（10×10×10 〖cm〗^3），可搭載於立方衛星上，拍攝出更高品質的衛星影像，具有低成本、高度研究價值的特性，TWOCI與美國Hawkeye海洋水色儀，有著相同的觀測光譜，藉由選用濾光效率更高之濾光片，以及量子效率更好的CMOS感測器，得到更好的光學觀測效率，可觀測準確的海洋葉綠素變化，在整體衛星影像上，TWOCI鏡頭設計使用三片透鏡組之設計，降低單一鏡片之曲率，有助於提升整體視場的清晰度，避免影像產生邊緣像差。;The Ocean Color Instrument (OCI) uses multispectral observation to measure ocean surface temperature, salinity, and algae distribution. Its applications span various fields, including satellite-based fishing charts, estuary monitoring, coastal aquaculture oversight, and military uses. Consequently, OCIs must be capable of capturing wide-ranging, high-definition images. This research introduces the TWOCI Ocean Color Instrument, a design that significantly improves spectral measurement efficiency while achieving a miniaturized form factor. At approximately 1U (10×10×10 〖cm〗^3) in size, it′s ideal for deployment on CubeSats. This not only leads to lowering costs but also makes it a highly valuable tool for research. The TWOCI shares the same observation spectrum as the U.S. Hawkeye Ocean Color Instrument. By incorporating filters with higher light transmission efficiency and CMOS sensors with superior quantum efficiency, the TWOCI achieves enhanced optical observation efficiency. This allows for the accurate monitoring of ocean chlorophyll changes. For its overall satellite imaging, the TWOCI features a three-lens group design. This approach reduces the curvature of individual lenses, which helps to improve the clarity of the entire field of view and effectively prevents image aberrations at the edges.
