Planetary exploration missions generally impose high demands on both the imaging quality and the size-weight constraints of opticalsystems. Therefore, this paper proposes using curved detector in the design of a fast...
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ISBN:
(纸本)9781510673571;9781510673564
Planetary exploration missions generally impose high demands on both the imaging quality and the size-weight constraints of opticalsystems. Therefore, this paper proposes using curved detector in the design of a fast and wide-field off-axis freeform three-mirror optical system, aiming to achieve high imaging performance within a relatively small volume. Specifically, a freeform-shaped curved detector is considered in the off-axis system design, which ultimately enables the system reach a near diffraction limited image quality within 10-liter volume. The proposed design shows great potential for application in planetary exploration missions, making the higher performance imaging instruments feasible in the future missions.
Freeform systems benefit from using base surfaces that are conics. We present two approaches that leverage the unique properties of conical optics that allow for near-null testability in component metrology and system...
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Stock lenses are attractive components in optical system design, offering lower cost and ready availability when compared to custom lenses. However, the lack of effective (optimization) tools to designsystems with st...
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ISBN:
(纸本)9781510673571;9781510673564
Stock lenses are attractive components in optical system design, offering lower cost and ready availability when compared to custom lenses. However, the lack of effective (optimization) tools to designsystems with stock lenses often leads to a manual, thus time-consuming and highly iterative design process with low success rate and clearly non-ideal results. In this work, we present an automatic opticaldesign tool that uses only stock lenses from known suppliers to generate lens systems directly from the specifications and constraints given by the user, without requiring any nominal starting or reference design. To efficiently master this complex problem of selecting working stock lens combinations, our proposed tool makes use of the 'First Time Right' design method to generate constraint stock-based lens systems of both finite and infinite conjugate configurations from scratch. The method relies on Fermat's principle and enables a highly systematic generation and very fast evaluation of arbitrary lens designs. This all-analytic approach makes the pre-selection and positioning of stock lenses highly efficient computationally. We will demonstrate and discuss the extensive and fast exploration of stock lens solutions offered by the stock lens-based design tool using several- practical lens design examples. These results clearly highlight the tool's capabilities for streamlined stock lens-based system exploration and the cost-versus-performance analysis.
The correction of spatial and spectral resolution in imaging spectrometer systems is of great importance due to their significant impact on efficiency and quality. During the design process, the resolution and distort...
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ISBN:
(纸本)9781510673571;9781510673564
The correction of spatial and spectral resolution in imaging spectrometer systems is of great importance due to their significant impact on efficiency and quality. During the design process, the resolution and distortion are both essential for imaging spectrometer performance analysis and correction. In a spectrometer system, the prism or the grating usually break the rotational symmetry, causing problems in aberration correction. Therefore, freeforms can be introduced in such systems to improve the imaging performance with the additional degrees of freedom. Concerning the high-order surface deviation and the symmetry-free system structure, the mixed ray-tracing method is applied for a comprehensive aberration analysis. The results calculated with the method help for opticaldesign with a clear visualization of surface-decomposed aberration contributions. In case of freeform application, the method is considered as a reliable tool for a better understanding of the imaging performance.
Digital design and dynamic simulation are indispensable parts of modern robot design process. By means of the study and utilization of digital design and simulation, defects can be detected at an early stage, structur...
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Digital design and dynamic simulation are indispensable parts of modern robot design process. By means of the study and utilization of digital design and simulation, defects can be detected at an early stage, structural parameters can be optimized, and the number of iterations and cost can be reduced, which not only can improve the design efficiency and verify the design parameters and algorithms, but also significantly reduces the development cost and time.
With the explosive growth of Internet traffic, modern communication systems have put forward higher transmission capacity and efficiency requirements. This study explores the design of bismuth ion-doped fiber lasers t...
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We report the first bias-free performance of Type-ii modified GaInAsSb/InP UTC-PD for high-bandwidth and high-power applications. The UTC-PD achieves zerobias bandwidth of 60 GHz and high output power of -11 dBm at 10...
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ISBN:
(纸本)9798350377583
We report the first bias-free performance of Type-ii modified GaInAsSb/InP UTC-PD for high-bandwidth and high-power applications. The UTC-PD achieves zerobias bandwidth of 60 GHz and high output power of -11 dBm at 100 GHz. (c) 2023 The Author(s)
The results of the design of electron-opticalsystems for electro-vacuum O-type devices designed to operate in the 220 GHz band are presented. The fundamental necessity of taking into account the phase volume of the e...
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We assess the performance of an O-band integrated optical 4x4 switch using the broadcast and select architecture with 100 Gbit/s PAM-4 signals. We measured a power penalty of <1 dB at the FEC-limit for multiple opt...
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ISBN:
(纸本)9798350377583
We assess the performance of an O-band integrated optical 4x4 switch using the broadcast and select architecture with 100 Gbit/s PAM-4 signals. We measured a power penalty of <1 dB at the FEC-limit for multiple optical paths. (c) 2024 The Author(s)
Dense false target jamming has highly deceptive and suppressive characteristics, which may exist seriously impact on radar systems. Hence, based on the principle that jammers generate dense false target jamming, a wav...
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