Co-phase error detection for segmented mirrors with ptychography

Li, Liangliang; Pan, An; Li, Chuang; Zhao, Hui

doi:10.1016/j.optcom.2023.129393

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…1 The use of the metaphor of "screen as mirror" is particularly apt in the portrayal of Chinese lesbianism, since in Chinese etymology, the phrase mojing (磨鏡, literally "rubbing the mirror") specifically refers to the sexual act of rubbing each other's bodies among lesbian couples (Chen,"Queering" 245). Therefore, it is not a coincidence that one of the most recent mainland Chinese television shows to feature lesbian love among its protagonists is titled Couple of Mirrors (Shuangjing 雙鏡, literally "double mirror," directed by Dachao Li, 2021). 2 While the negation of queer personhood in the Global North has its roots in the religious doctrines of Christianity, Judaism, and Islam, Taiwanese religious beliefs and practices are more syncretic (Cheng 2), drawing from such diverse sources as Zen, Theravada, Mahayana, and Tibetan Buddhism; Daoism; and folk religion.…”

Section: Notesmentioning

confidence: 99%

Queering the Screen: Spectral Figures and German-Taiwanese Encounters in Monika Treut’sGhosted

Zhou

2022

Seminar: A Journal of Germanic Studies

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In queer German director Monika Treut’s film Ghosted (2009), a plethora of screen apparatuses, including cameras, laptops, and cellphones, mediate encounters among the German protagonist, Sophie Schmitt; her Taiwanese girlfriend, Ai-ling; and Ai-ling’s spectral doppelgänger, Mei-li. Examining how the screen bestows visibility on the otherwise elusive figure of the queer Asian woman while limiting her freedom, this article explores how the comparatively more fluid apparitional lesbian challenges the domesticating effect of racially charged looks by destabilizing various borders between life and death, past and present, the real and the imaginary. Although Treut valorizes the ghost’s unfathomable nature as its source of power, a full acceptance of the spectre’s opacity and epistemological differences inherently conflicts with the desire to bridge German and East Asian cultures.

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Section: Notesmentioning

confidence: 99%

Queering the Screen: Spectral Figures and German-Taiwanese Encounters in Monika Treut’sGhosted

Zhou

2022

Seminar: A Journal of Germanic Studies

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“…To uphold the facial shape precision of these segmented plane mirrors, it becomes imperative to identify and rectify the piston and tilt errors among the sub-mirrors. While the tilt error detection technique has achieved a certain degree of maturity, the predicament surrounding piston error detection remains unresolved, primarily attributable to issues such as 2π blurring and related challenges [5]. Various methodologies are available for the detection of segmented plane mirrors, including broad-and narrow-band Shack-Hartmann detection [6], dispersion fringe method [7], pentaprism scanning detection [8], dual-wavelength co-phase detection [9], and interference detection method [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation into the Co-Phase Detection Methodology for Segmented Plane Mirrors Utilizing Grazing Incidence Interferometry

Liu,

Guo,

2024

Sensors

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Segmented plane mirrors constitute a crucial component in the self-aligned detection process for large-aperture space optical imaging systems. Surface shape errors inherent in segmented plane mirrors primarily manifest as tilt errors and piston errors between sub-mirrors. While the detection and adjustment techniques for tilt errors are well-established, addressing piston errors poses a more formidable challenge. This study introduces a novel approach to achieve long-range, high-precision, and efficient co-phase detection of segmented plane mirrors by proposing a segmented plane mirror shape detection method based on grazing incidence interferometry. This method serves to broaden the detection range of piston errors, mitigate the issue of the 2π ambiguity resulting from piston errors in co-phase detection, and extend the detection capabilities of the interferometer. By manipulating the incident angle of the interferometer, both rough and precise adjustments of the segmented plane mirrors can be effectively executed.

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