Silicon adaptive optic systems using micromirrors

Clark, Natalie; Furth, Paul M.; Whitfield, Gregory N.; Comtois, John H.; McKecknie, Stuart; Michalicek, M. Adrian

doi:10.1117/12.321665

Cited by 2 publications

(6 citation statements)

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“…This high active area coverage offers unprecedented to diffraction-limited imaging with minimal light loss. [4][5] . .…”

Section: I0az Dnmentioning

confidence: 97%

“…MEM technology can provide devices with very low weight making them entirely suitable for ground based, airborne, and even hand-held wavefront correction applications. Figure 2 shows the details of an individual mirror design of a micro-mirror device developed at the Air force Research Laboratory (4)(5). This figure captures all of the advantages of the SUMMIT process for MOEMS.…”

Section: I0az Dnmentioning

confidence: 98%

“…This is an important consideration not only for optical efficiency, but also in applications where stray light leakage into the mechanism limits power handling capability. [4][5] The multiple layers also allows us to shield the wiring so the optical surface can be metalized after the release etch. Thus the optical surface of choice can be deposited without concern over its survival through the harsh release etch.…”

Section: I0az Dnmentioning

confidence: 99%

“…This approximation is quite good if the cone of emerging rays is narrow enough. Thus, based upon this the approximation of a parabolic equation yields the transport equation v±I.v±w+Ivw+i= 0 dz (1) where V1 + is the gradient operator in the (x,y) plane which is normal to the direction of ax ay beam propagation [1][2][3][4][5].…”

Section: Wavefront Sensorsmentioning

confidence: 99%

“…The micro-mirrors lend themselves to being integrated with CMOS circuits. Hence, the highly integrated nature of our silicon adaptive optic system offers advantages in speed, cost, size, and powerconsumption [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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<title>Intelligent vision systems using dynamic neural networks</title>

Clark

Furth

1999

SPIE Proceedings

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The design of a silicon eye using dynamical neural networks. Our silicon eye is capable of not only able to compensate for defocus, but it can also compensate for other aberrations including astigmatism, coma, and spherical aberrations. In addition, the silicon retina acts as a reconfigurable dynamic neural network to enable real-time image processing. The silicon eye uses three key enabling technologies. First, high-speed active pixel photo-diodes are uses as photo-detectors for both imaging and for wavefront sensing. The design of the active pixel photo-detectors is described along with experimental results characterizing their performance. Second, the analog signals received from the photo-detectors and processed by the active pixel circuitry is fed into a smart vision chip. The smart vision chip is a reconfigurable neural network capable of real-time reconstruction of the phase information associated with the imaging system. The micro mirrors are active optic devices that can be used to compensate for optical aberrations. Experimental results obtained from the circuit implementation of the dynamical neural networks are presented The experimental results obtained from our intelligent vision system demonstrate that dynamical neural networks offer advantages in speed, cost, size, and power consumption.

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“…This high active area coverage offers unprecedented to diffraction-limited imaging with minimal light loss. [4][5] . .…”

Section: I0az Dnmentioning

confidence: 97%

Section: I0az Dnmentioning

confidence: 98%

Section: I0az Dnmentioning

confidence: 99%