Optical design and fabrication of a common-aperture multispectral imaging system for integrated deep space navigation and detection

Cao, Jianjing; Chang, Jun; Huang, Yi; Wu, Yunan; Ji, Zhongye; Lai, Xiaoming; Wang, Junya; Li, Yiting; Zhu, Wei; Li, Xuyang

doi:10.1016/j.optlaseng.2023.107619

Cited by 4 publications

(1 citation statement)

References 18 publications

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“…Figure 1 is a schematic representation of the spectral separation of a dichroic beamsplitter, reflecting SWIR and transmitting MWIR and LWIR. There is a report [10] on the design and construction of a common-aperture multispectral imaging system (CAMIS) to simultaneously obtain spectral data in ultraviolet, visible, MWIR, and LWIR bands. Four dichroic beamsplitters were used to split spectra in different wavelength ranges in the CAMIS.…”

Section: Introductionmentioning

confidence: 99%

NIR to LWIR Dichroic Beamsplitter Designed and Manufactured for Space Optical Remote Sensor

Jiang,

Qin,

et al. 2024

Coatings

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The infrared dichroic beamsplitter plays an important role in infrared multi-band imaging systems, especially for infrared remote sensing. This paper presents the design and preparation of a dichroic beamsplitter that is capable of reflecting near infrared (NIR) and shortwave infrared (SWIR), and transmitting medium wave infrared (MWIR) as well as longwave infrared (LWIR). A single crystal germanium (Ge) sheet is used as the substrate of the dichroic beamsplitter, while Ge, zinc sulfide (ZnS) and ytterbium trifluoride (YbF3) are selected as coating materials. The average reflectance of the dichroic beamsplitter is more than 95% in bands 1.28 to 1.38 μm, 1.58 to 1.83 μm, and 1.95 to 2.32 μm, and the average transmittance is more than 92% in bands 3.7 to 6.2 μm and 7.5 to 12.5 μm at an incident angle of 45°. The dichroic beamsplitter has been successfully applied in the optical system of infrared remote sensing. It provides a technical approach for other optical systems to separate the optical spectrum from NIR to LWIR.

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Section: Introductionmentioning

confidence: 99%

NIR to LWIR Dichroic Beamsplitter Designed and Manufactured for Space Optical Remote Sensor

Jiang,

Qin,

et al. 2024

Coatings

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High contrast ratio optimized total internal reflection prism for compact medium-wave IR target simulation system

Du,

Sun,

Yang

et al. 2024

iScience

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Research on ultraviolet-visible composite optical target simulation technology

Du,

Sun,

Yang

et al. 2024

Opt. Express

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This study proposes an ultraviolet-visible composite optical target simulation technique based on a liquid crystal display (LCD) spatial light modulation device to solve the problem of not being able to satisfy the demand for optical target simulation for both ultraviolet and visible light operating spectral ranges in a single system when composite simulation of multi-source spatial targets is performed. We establish a composite light source model of an ultraviolet light emitting diode (LED) and a xenon lamp to enhance the energy simulation of the ultraviolet portion, and the light is mixed and homogenized by an integrating sphere. We analyze the light transmission principle of LCD display devices and derive the equation for the relationship between its working band and transmittance. We design a transmission-type projection system with a wide spectral range and simulate the transmittance of the whole system, and demonstrate the optical target simulator can realize the simulation requirements of a wide working spectral range, high interstellar angular distance accuracy, and high magnitude accuracy.

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Optical design and fabrication of a common-aperture multispectral imaging system for integrated deep space navigation and detection

Cited by 4 publications

References 18 publications

NIR to LWIR Dichroic Beamsplitter Designed and Manufactured for Space Optical Remote Sensor

NIR to LWIR Dichroic Beamsplitter Designed and Manufactured for Space Optical Remote Sensor

High contrast ratio optimized total internal reflection prism for compact medium-wave IR target simulation system

Research on ultraviolet-visible composite optical target simulation technology

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