Experimental demonstration of precise holograms using complex light modulation

Parthiban, Vik; Kohn, Rudolph N.; Liang, Jinyang; Becker, Michael F.

doi:10.1117/12.2208316

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Although overcoming the limitation in projection speed, to eliminate the high-order harmonics from the binary mask, binary defocusing projects quasi-sinusoidal fringe patterns away from the system's image plane, which could bring instability in fringe pattern quality. Consequently, DMD's uneven surface could induce image distortion to the defocused binary DMD masks at any unconjugate plane, especially under coherent illumination [30]. In addition, the high-order harmonics from the binary mask are frequency-dependent [31], which makes binary defocusing less compatible with multifrequency fringe pattern projection.…”

Section: Introductionmentioning

confidence: 99%

Dynamic three-dimensional imaging with cubic-meter-level measurement volume using multi-scale band-limited illumination profilometry

Jiang

Kilcullen

Lai

et al. 2023

Emerging Digital Micromirror Device Based Systems and Applications XV

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Dynamic three-dimensional (3D) surface imaging using phase-shifting fringe projection profilometry is currently driven by industrial manufacturing, archaeological inspection, and entertainment. However, existing techniques cannot simultaneously provide the robustness in solving spatially isolated 3D objects, the tolerance of large variation in surface reflectance, and the flexibility of tunable working distances with a cubic meter (m 3 )-level measurement volume at video rate. To overcome these limitations, we have developed multi-scale band-limited illumination profilometry (MS-BLIP). MS-BLIP implements multi-frequency fringe projection with the associated phase unwrapping, which enables robust 3D imaging of spatially isolated objects. Meanwhile, MS-BLIP adopts dual-level intensity projection to enhance its dynamic range, which allows recovering 3D information from surfaces with large reflectance variation. Moreover, MS-BLIP applies a newly developed iterative method for distortion compensation, which improves the 3D reconstruction quality over a cubic-meter-level measurement volume. Finally, a dove prism is used to adjust the orientation of the field of view, which helps MS-BLIP fit different experimental scenarios. With a measurement volume of up to 1.5 m 3 and a working distance of up to 2.8 m, MS-BLIP showcases the video-rate 3D surface imaging of full human-body movements.

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Section: Introductionmentioning

confidence: 99%

Dynamic three-dimensional imaging with cubic-meter-level measurement volume using multi-scale band-limited illumination profilometry

Jiang

Kilcullen

Lai

et al. 2023

Emerging Digital Micromirror Device Based Systems and Applications XV

View full text Add to dashboard Cite

show abstract

“…Single-phase SLMs are perfect for easily encoding phase patterns, while DMDs are basically aimed to manipulate the amplitude. The combination of these two elements in the same optical setup can create a fully complex modulated wavefront [97]. Several disadvantages are implicit with these strategies.…”

Section: Iv1 -General Overviewmentioning

confidence: 99%

Complex spatial shaping of femtosecond pulses with phase-only spatial light modulators

Leal¹

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Among the most notable results obtained during this thesis, it is worth highlighting: 1. The experimental development and improvement of a double-phase method. 2. The introduction of a novel spatial phase multiplexed technique able to generate arrays of foci with extremely high precision in the position and peak energy of foci. 3. The development of a new calibration technique for phase-only SLMs to increase the accuracy and control capabilities of these devices. 4. The application of the optimized double-phase method to enhance both non-linear microscopic through the introduction of a complex lighting scheme and non-linear optical processes (e.g., secondharmonic generation or filamentation) by means of an accurate control of light parameters.

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Real-time high-speed three-dimensional surface imaging using band-limited illumination profilometry with a CoaXPress interface

et al. 2020

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High-speed three-dimensional (3D) surface imaging by structured-light profilometry is currently driven by numerous applications. However, the limited speeds in fringe pattern projection, image acquisition, and data transmission have strained the existing methods from reaching kilohertz-level acquisition, processing, and display of 3D information during the occurrence of dynamic events (i.e., in real time). To overcome these limitations, we have developed band-limited illumination profilometry (BLIP) with a CoaXPress interface (CI), which enables real-time high-speed 3D surface imaging. We have demonstrated the system’s performance by imaging various static and fast-moving 3D objects in real time. We have also applied this system in fluid mechanics by imaging dynamics of a flag, which allowed observation of the wave propagation, gravity-induced phase mismatch, and asymmetric flapping motion. We expect CI-BLIP to find diverse scientific and industrial applications.

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Experimental demonstration of precise holograms using complex light modulation

Cited by 4 publications

References 8 publications

Dynamic three-dimensional imaging with cubic-meter-level measurement volume using multi-scale band-limited illumination profilometry

Dynamic three-dimensional imaging with cubic-meter-level measurement volume using multi-scale band-limited illumination profilometry

Complex spatial shaping of femtosecond pulses with phase-only spatial light modulators

Real-time high-speed three-dimensional surface imaging using band-limited illumination profilometry with a CoaXPress interface

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