04/19/2022: Blanche, P-A. “Towards a modular and scalable holographic display“. Light Sci Appl 11, 100 (2022). Link
In this editorial article, I am reviewing a recent publication by a group at Disney Research and the University of Cambridge about an “Holobricks: modular coarse integral holographic displays”. I describe this new system in the context of similar researches done in the past, and the future of 3D display in general.
03/14/2022: F. Akhoundi et al., “Performance analysis of a compact auto-phoropter for accessible refractive assessment of the human eye“, Appl. Opt. 61, 2207-2212 (2022). Link
In this publication, we present the performance analysis of a portable auto-phoropter capable of an objective measurement of the refractive power and astigmatism of the human eye, and presenting the correction to the patient.
02/25/2022: I will be presenting an e-seminar about the “Texas Instruments Phase Light Modulator for Holography” from UT Dallas TXACE, Texas Analog Center of Excellence. The seminar will be available online. Link
01/05/2022: An article in SyFy Wire that is relaying my publication on holographic 3D display: “3D holographic televisions are much closer than a galaxy far, far away”, By Cassidy Ward. Link
The original scientific article was published in Light: Advanced Manufacturing, doi: 10.37188/lam.2021.028
01/11/2022: C. Draper and P.-A. Blanche, “Holographic curved waveguide combiner for HUD/AR with 1-D pupil expansion“, Opt. Express 30, 2503-2516 (2022). Link
In this publication, we are demonstrating for the first time ever how a curved waveguide can be used as a combiner for head up display or augmented reality applications. We used holographic optical elements to correct for the distortion of the image during its propagation inside the curved waveguide. The image is extracted from the waveguide multiple times to expand the system pupil and offer a large eye box. The image that is perceived by the viewer does not show any aberration, and is projected at infinity so it does not require any accommodation. In addition, we are using a polymer waveguide, instead of glass, which reduces dramatically the cost of the system.
This publication has been the 7th top downloaded article from Optics Express during the month of January.
12/23/2021: P. E. Alcaraz, G. Nero, and P.-A. Blanche, “Bandwidth optimization for the Advanced Volume Holographic Filter,” Opt. Express 30, 576-587 (2022). Link
We previously explained that two diffraction gratings working together can extend the spectral bandwidth of the system (link). In this new paper, we optimized the configuration to obtain the maximum bandwidth. This technique can find applications in astronomy and free space communication.
12/20/2021: P.-A. Blanche, “Holography, and the future of 3D display“. Light: Advanced Manufacturing, 2, 2689-9620, (2021). doi: 10.37188/lam.2021.028
In this manuscript, I am exploring the technical reasons why an holographic 3D display is such a difficult endeavor, what to expect for the future of 3D displays, and when could we expect to see the emergence of holographic displays.
12/13/2021: Thank you to UA’s Research, Innovation & Impact (RII), the 18th Mile TRIF Fund, and Technology Research Initiative Fund/Innovative Technology for the 4th Industrial Revolution initiative for funding our research on “Polymer AR holographic glasses for IoT, 4IR and Personal Medicine”
11/02/2021: Thank you to OPTICA (former OSA) for electing me as a Fellow of the Society. Link
10/05/2021: P.-A. Blanche, and C. T. Draper, “Curved waveguide combiner for HUD/AR“, Proceedings Volume 11828, ODS 2021: Industrial Optical Devices and Systems; 1182806 (2021). Link
In this article and presentation, we are introducing for the first time to our knowledge, the use of a curved waveguide (instead of flat), as a combiner for HUD/AR applications. Curved waveguides can find applications in automotive HUD (windshield), motorcycle (helmet visor), and AR glasses (curved lenses and prescription lenses).