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10 June 2024 A high-performance multispectral 3-sensor zoom camera with fully achromatized common entrance optics for submarine optronics masts
Christian Lehmann, Martin Gerken, Martin Huebner
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Proceedings Volume PC13042, Advanced Optics for Imaging Applications: UV through LWIR IX; PC1304204 (2024) https://doi.org/10.1117/12.3013631
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States
Abstract
The multispectral camera reported herein consists of a single aperture optic, splitting the incoming light onto three independent sensors. Having a common beam path, it is possible to employ a motion blur compensating de-scanner unit, allowing the generation of high-speed panoramic stitches for quick look arounds. The fast aperture optics has a F-number spanning from F/2.8 in the wide field of view to F/3.8 in the narrow field of view. Additionally, the optic is corrected for chromaticity errors over the whole wavelength range. For each sensor we managed to maintain focus and exactly match horizontal fields of view over the complete zoom range. The individual imaging sensors employed are a SXGA SWIR sensor, a 4K VIS CMOS sensor and a SXGA low light level sensor for night vision capability. Thus, it is possible to see under almost all possible atmospheric and light conditions. As all sensors can be read out simultaneously with subsequent on-board processing, we can combine image analysis with image fusion such as navigation light detection within SWIR images. Additionally, the SWIR sensor is able to detect laser light using ALPD (asynchronous laser pulse detection).
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Christian Lehmann, Martin Gerken, and Martin Huebner "A high-performance multispectral 3-sensor zoom camera with fully achromatized common entrance optics for submarine optronics masts", Proc. SPIE PC13042, Advanced Optics for Imaging Applications: UV through LWIR IX, PC1304204 (10 June 2024); https://doi.org/10.1117/12.3013631
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KEYWORDS
Sensors
Cameras
Optoelectronics
Zoom lenses
CMOS sensors
Image processing
Ocean optics
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