Development of focusing mechanism for space camera

Zi-qing, 姜紫庆 Jiang; Jianjun, 贾建军 Jia

doi:10.3788/ope.20182612.2956

Cited by 2 publications

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“…They provide a high accuracy and resolution, but at the cost of increasing the complexity and cost and reducing the reliability of the structure [ 5 , 6 , 7 , 8 , 9 ]. Some recent studies [ 10 , 11 , 12 , 13 , 14 ] have proposed improved focusing mechanisms, but they are still based on traditional focusing mechanisms and there are still movable motion pair, motion transformation, transmission error, friction, and wear problems. The focus mechanism proposed in this paper applies piezoelectric ceramics in the actuator and works with a flexible structure at the same time.…”

Section: Introductionmentioning

confidence: 99%

Design of a Focusing Mechanism Actuated by Piezoelectric Ceramics for TMA Telescope

Chen

Zhu

2023

Sensors

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With the development of space telescopes towards high-resolution and intelligent imaging, the scale and complexity of the focal plane components of large-aperture, off-axis, three-mirror anastigmatic (TMA) optical systems are increasing. Traditional focal plane focusing technology reduces the system reliability and increases the scale and complexity. This paper proposes a three-degrees-of-freedom focusing system based on a folding mirror reflector, with a piezoelectric ceramic actuator as the driver. An environment-resistant flexible support was designed for the piezoelectric ceramic actuator through an integrated optimization analysis. The fundamental frequency of the large-aspect-ratio rectangular folding mirror reflector focusing mechanism was around 121.5 Hz. After testing, it was found to meet the requirements of the space mechanics environment. This system shows promise for application to other optical systems as an open-shelf product in the future.

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Section: Introductionmentioning

confidence: 99%

Design of a Focusing Mechanism Actuated by Piezoelectric Ceramics for TMA Telescope

Chen

Zhu

2023

Sensors

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Design and experimental study of minitype modularized fluorescence microscopic imaging system and focusing mechanism

Zhang

Liu

et al. 2021

J. Phys.: Conf. Ser.

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In the global in vitro diagnostic(IVD) market, point-of-care testing(POCT) features the largest market share, while POCT in China features small market share. With the development of consumption upgrading, urbanization and medical reform of China, this kind of real-time detection without central laboratory features huge market demand and potential. POCT is a testing method, which can obtain test results in just few minutes with portable equipment and supporting reagents. In this paper, a minitype modularized fluorescence microscopic imaging system is proposed, which is used for blood cells detection, microbial observation and pathological section scanning. In order to meet the needs of portable, miniaturized and chip-type, a linear objective lens switching and focusing mechanism (LOLSFM) has been designed and developed, which changed the rotating disk switching mode of existing microscope. Finally, the precision and verticality of the LOLSFM are verified by experiments. The imaging quality of minitype modularized fluorescence microscopic imaging system.

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Development of focusing mechanism for space camera

Cited by 2 publications

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Design of a Focusing Mechanism Actuated by Piezoelectric Ceramics for TMA Telescope

Design of a Focusing Mechanism Actuated by Piezoelectric Ceramics for TMA Telescope

Design and experimental study of minitype modularized fluorescence microscopic imaging system and focusing mechanism

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