Optical surface figure of lens under kinematic mount apparatus and its reproducibility

Xinfeng, 于新峰 Yu; Yan, 巩岩 Gong; Ming-yang, 倪明阳 Ni; Shuo, 秦硕 Qin

doi:10.3788/ope.20132108.2000

Cited by 3 publications

(2 citation statements)

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“…Based on the three lateral point principles discussed in Section 2.1, each support point can be divided into two points, three points or four points etc. Thus, the basic three-point lateral support can be changed into a six-point, nine-point or twelve-point support [3,4].…”

Section: Kinematic Multi-point Lateral Supportmentioning

confidence: 99%

Kinematic evaluation of the whiffletree lateral support setup and its application for the mirror support of the TMT tertiary mirror

Wang

Linmin

Jin

2015

J. Eur. Opt. Soc.-Rapid Publ.

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With increasing size of the reflecting mirror apertures in telescopes, the lateral support is becoming more and more important. In order to find a setup satisfying the requirements for the TMT tertiary mirror, based on the classic three-point flexure support setup, a twelve-point lateral support setup was investigated its basic internal relations and properties were investigated. The virtual equivalent circle concept is then proposed to evaluate different potential setups. By studying the relationship between the virtual equivalent circle radius and the thermal deformation and resonant frequency, it can be concluded that a larger virtual equivalent circle radius results in a smaller the thermal deformation and a higher resonant frequency. Preliminary research results suggested that the TMT tertiary mirror surface figure error and thermal deformation requirements can easily be met. However, it was more difficult to obtain resonant frequencies higher than 15 Hz. Based on the virtual equivalent circle concept, the TMT tertiary mirror support setup was optimized, resulting in a resonant frequency of 17.7 Hz, which satisfies the requirements. The whiffletree lateral support setup can be applied to similar reflecting mirror support structures.

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Section: Kinematic Multi-point Lateral Supportmentioning

confidence: 99%

Kinematic evaluation of the whiffletree lateral support setup and its application for the mirror support of the TMT tertiary mirror

Wang

Linmin

Jin

2015

J. Eur. Opt. Soc.-Rapid Publ.

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“…The optical path of high-power solid-state laser systems consists of numerous opto-mechanical assemblies, and the precision of their assembly directly influences the laser's pointing accuracy (Guamán et al,2020). Kinematic couplings, a prevalent mechanical assembly technique, have gained widespread use in the precision assembly of opto-mechanical assemblies due to their simplicity, efficiency, and repeatability (Slocum et al,2010;Saha et al,2018;Yu et al,2013;Zhang et al,2020).…”

Section: Introductionmentioning

confidence: 99%

Optimization Design of Kinematic Couplings for Improving Repetitive Positioning Accuracy of Opto-mechanical Assemblies

Fan,

Yang,

Yuan

et al. 2023

Preprint

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Kinematic coupling, as an efficient form of connection, is frequently employed for the repeated assembly and accurate positioning of replaceable opto-mechanical assemblies within high-power solid-state laser systems. During the kinematic coupling process, uncertainties in the mechanical behavior within the contact region often hinder the attainment of consistent positioning accuracy, potentially leading to an inability to meet operational requirements. This study aims to enhance the repetitive positioning precision of opto-mechanical assemblies kinematic couplings. To achieve this goal, a predictive model for repetitive positioning accuracy is established, accounting for uncertainties in contact region forces. Based on this model, an optimization design of kinematic couplings is conducted to mitigate these challenges. Initially, accounting for uncertainties in mechanical parameters within the contact region, we formulate a static analysis computational model to elucidate the probabilistic distribution of these parameters. Subsequently, employing Hertz contact theory and Holm-Archard wear theory, we quantify the elastic deformation and equivalent wear for each contact region through the calculation of normal pressures. Building upon this foundation, we establish a predictive model for repetitive positioning accuracy. Finally, optimization design is carried out on the friction coefficient of contact surfaces and the structural dimensions of positioning elements. The proposed optimization design is validated through experimental verification. The findings demonstrate that optimization of structural dimensions and contact surface friction coefficients resulted in enhanced repetitive positioning accuracy of 35.9%, effectively ameliorating the assembly quality. This study contributes a quantifiable analytical approach to the prediction and optimization design of repetitive positioning accuracy in kinematic couplings.

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Analysis and optimization of repetitive positioning precision for kinematic couplings of opto-mechanical components considering uncertainty

Fan,

Yang,

Yuan

et al. 2024

Precision Engineering

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Optical surface figure of lens under kinematic mount apparatus and its reproducibility

Cited by 3 publications

References 0 publications

Kinematic evaluation of the whiffletree lateral support setup and its application for the mirror support of the TMT tertiary mirror

Kinematic evaluation of the whiffletree lateral support setup and its application for the mirror support of the TMT tertiary mirror

Optimization Design of Kinematic Couplings for Improving Repetitive Positioning Accuracy of Opto-mechanical Assemblies

Analysis and optimization of repetitive positioning precision for kinematic couplings of opto-mechanical components considering uncertainty

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