Results 151 to 160 of about 3,080 (207)

Adaptive PVDF piezoelectric deformable mirror system

Applied Optics, 1980
An adaptive mirror system whose surface deforms smoothly according to the desired curve has been made of polyvinylidene fluoride (PVDF) piezoelectric film and laminar glass plate. One surface of the glass plate was evaporated with silver, and this side was used as the mirror surface. A PVDF film, whose shape was determined by the deformation curve, was
T, Sato, H, Ishida, O, Ikeda
openaire   +2 more sources

Development of piezoelectric MEMS deformable mirror

Microsystem Technologies, 2011
This paper reports on piezoelectric micro-electro-mechanical systems deformable mirrors with high-density actuator array for low-voltage and high-resolution retinal imaging with adaptive optics. The deformable mirror was composed of unimorph structure of lead zirconate titanate (PZT) thin film deposited on Pt-coated silicon on insulator substrate and a
Sato, Masashi, Tsuda, Shogo, Kanno, Isaku, Kotera, Hidetoshi, Tabata, Osamu   +4 more
openaire   +2 more sources

Unimorph piezoelectric deformable mirrors for space telescopes

SPIE Proceedings, 2016
We have developed, manufactured and tested a unimorph deformable mirror for space applications based on piezoelectric actuation. The mirror was designed for the correction of low-order Zernike modes with a stroke of several tens of micrometers over a clear aperture of 50 mm.
Rausch, Peter, Verpoort, Sven, Wittrock, Ulrich   +2 more
openaire   +1 more source

Adaptive deformable mirror with piezoelectric ceramic actuators

Soviet Journal of Quantum Electronics, 1988
An experimental investigation was made of the formation of the relief of a reflecting surface by an adaptive deformable mirror. The additivity of the effect of a system of discrete actuators on the reflecting surface of the adaptive mirror was confirmed.
V V Apollonov, A M Prokhorov, S N Temnov, S A Chetkin   +3 more
openaire   +1 more source

Analysis and test of a piezoelectric deformable mirror

SPIE Proceedings, 2010
Adaptive optics is concerned with correcting a distorted wavefront by introducing a counter aberration into an element of the optical system, it use widely in astronomy and there are also applications in microscopy, the writing of 3D optical bit memory and photo-fabrication now.
Dan Wang, Chaoming Li, Jianhong Wu
openaire   +1 more source

Single Crystal Piezoelectric Actuators for Advanced Deformable Mirrors

Aerospace, 2004
In this paper, single crystal piezoelectric actuators are developed and demonstrated as a means of increasing actuator authority while maintaining strain precision for adaptive optics used large throw deformable mirror applications. Single crystal (PMN-PT crystal) stack actuators with foot print size of 5 mm × 5 mm and height varied from 16 mm to 21 mm
X. N. Jiang, P. W. Rehrig, W. S. Hackenberger, J. Moore, S. Chodimella, B. Patrick   +5 more
openaire   +1 more source

Piezoelectric deformable mirror based on monolithic PVDF membranes

SPIE Proceedings, 2011
Deformable mirrors using polyvinylidene fluoride (PVDF) membranes in a bimorph configuration have been previously investigated. Kratos Defense and Security Solutions, in partnership with Advanced Optical Systems, Inc. and NeXolve, Inc., have been evaluating the utility of unimorph PVDF films for fabrication of deformable mirrors.
Greg A. Finney, Kevin Spradley, Brandon Farmer, Lensey Smith, Brian Patrick   +4 more
openaire   +1 more source

Tilt displacement range testing for a piezoelectric deformable mirror

SPIE Proceedings, 2016
In our previous works, we presented a zoom system and image stabilization design based on deformable mirrors (DMs). According to the high bandwidth and free edge characteristics of the piezoelectric deformable mirror (PDM), we tested the system’s image-stable capability.
Dongdong Wang, Qun Hao, Yong Song, Xuemin Cheng, Fan Fan, Heng Li   +5 more
openaire   +1 more source

Piezoelectric deformable mirror technologies for astronomy at IOE, CAS

SPIE Proceedings, 2014
Institute of Optics & Electronics (IOE), Chinese Academy of Sciences (CAS) has more than 30 years’ experience on piezoelectric deformable mirror (DM) technologies research and developing since early 1980s. Several DMs of IOE have been used in many different application systems.
Chunlin Guan, Xinlong Fan, Xiaojun Zhang, Hong Zhou, Jinbo Mu, Lixia Xue, Kai Wei, Hao Xian, Changhui Rao, Yudong Zhang, Ning Ling   +10 more
openaire   +1 more source

Piezoelectric unimorph MEMS deformable mirror for ultra-large telescopes

SPIE Proceedings, 2005
This paper describes the results of our demonstration on a proof-of-concept piezoelectric unimorph-based deformable mirror (DM) with continuous single-crystal silicon membrane. A PZT unimorph actuator of 2.5 mm in diameter with optimized PZT/Si thickness and design showed a deflection of 5 μm at 50 V.
Yoshikazu Hishinuma, Eui-Hyeok Yang, Bruce M. Levine, Eric E. Bloemhof   +3 more
openaire   +1 more source