MEMS-based pico projector display

Davis, Wyatt O.; Sprague, R.; Miller, Josh

doi:10.1109/omems.2008.4607813

Cited by 81 publications

(48 citation statements)

References 4 publications

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“…According to its operating method, a pico-projector is categorized according to three types: digital light processing (DLP), liquid crystal on silicon (LCoS), or laser beam steering (LBS). Figure 1 (a) shows the basic layout of a LBS-type picoprojector [15]. As shown, there is no projection lens set.…”

Section: Projection-type Integral Imaging System Using a Pico-promentioning

confidence: 99%

Projection-Type Integral Imaging Using a Pico-projector

Yang

Min

2014

Journal of the Optical Society of Korea

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A pico-projector is a compact and mobile projector that has an infinite focus. We apply the pico-projector to a projection-type integral imaging system, which can expand the image depth to form multiple central depth planes. In a projection-type integral imaging system, the image flipping problem arises because the expanded elemental images pass through a lens array. To solve this problem, we propose the ray tracing of a pico-projector at a central depth plane and compensate the elemental image using a pixel-mapping process. Experiments to verify the proposed method are performed, and the results are presented.

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Section: Projection-type Integral Imaging System Using a Pico-promentioning

confidence: 99%

Projection-Type Integral Imaging Using a Pico-projector

Yang

Min

2014

Journal of the Optical Society of Korea

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“…MEMS scanning micro mirrors are an emerging technology with possible applications ranging from consumer pico projection [1,2] to 3D scanning [3], automotive HUD [4] as well as medical applications [5]. A large percentage of use cases requires or benefits from a 2D MEMS mirror concept that can be deflected about one resonant "fast" horizontal axis and a "slow" vertical static axis to be able to perform a regular multiline scan as depicted in Figure 1a.…”

Section: Introductionmentioning

confidence: 99%

A Novel Gyroscopic Actuation Concept for 2D MEMS Micromirrors

Kaupmann

Pinter

Franz

et al. 2017

Proceedings of Eurosensors 2017, Paris, France, 3–6 September 2017

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Abstract:In this paper we present a novel approach to achieve indirect quasistatic deflection of 2D MEMS scanning micromirrors by solely resonant excitation utilizing gyroscopic effects. Therefore the micromirror is set to oscillate in its mirror plane additionally to its primary resonant oscillation with a similar frequency. According to angular momentum conservation this leads to a quasistatic deflection along a third axis orthogonal to the former. To investigate the applicability to MEMS micromirrors we develop a reference MEMS design to be used for fully transient FEM simulation. To achieve consistent simulation results we further develop a closed loop control algorithm. We then perform simulations using this method to prove the viability of the proposed concept

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“…Miniature scanner technologies have been employed in 1) scanning confocal microscopy, a powerful optical imaging method that can achieve sub-cellular resolution in real time [1][2][3][4], 2) portable, lightweight, low-power, inexpensive projection video displays with high information content [5][6][7][8][9], and 3) near-eye virtual displays like head-mounted displays (HMD) [10][11][12][13][14]. Most miniature scanner technologies utilize MEMS scanner mirrors.…”

Section: Introductionmentioning

confidence: 99%

2D MEMS electrostatic cantilever waveguide scanner for potential image display application

Lin

Wang

2015

MATEC Web of Conferences

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Abstract. This paper presents the current status of our micro-fabricated SU-8 2D electrostatic cantilever waveguide scanner. The current design utilizes a monolithically integrated electrostatic push-pull actuator. A 4.0 μm SU-8 rib waveguide design allows a relatively large core cross section (4μm in height and 20 μm in width) to couple with existing optical fiber and a broad band single mode operation (λ= 0.7μm to 1.3μm) with minimal transmission loss (85% to 87% output transmission efficiency with Gaussian beam profile input). A 2D scanning motion has been successfully demonstrated with two fundamental resonances found at 202 and 536 Hz in vertical and horizontal directions. A 130 μm and 19 μm, corresponding displacement and 0.062 and 0.009 rad field of view were observed at a +150V input. Beam divergence from the waveguide was corrected by a focusing GRIN lens and a 5mm beam diameter is observed at the focal plane. The transmission efficiency is low (~10%) and cantilever is slightly under tensile residual stress due to inherent imperfection in the process and tooling in fabrication. However, 2D light scanning pattern was successfully demonstrated using 1-D push-pull actuation.

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MEMS-based pico projector display

Cited by 81 publications

References 4 publications

Projection-Type Integral Imaging Using a Pico-projector

Projection-Type Integral Imaging Using a Pico-projector

A Novel Gyroscopic Actuation Concept for 2D MEMS Micromirrors

2D MEMS electrostatic cantilever waveguide scanner for potential image display application

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