Advanced stereo projection using interference filters

Jorke, Helmut; Simon, Arnold; Fritz, Markus

doi:10.1889/jsid17.5.407

Cited by 20 publications

(8 citation statements)

References 6 publications

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“…They are based on wavelength multiplexing, polarization multiplexing, or time multiplexing (using active shutter glasses) of the images for the left and the right eyes. Both wavelength multiplexing and polarization multiplexing can be time parallel (two projectors) or time sequential (one projector) . Polarization‐based 3D requires a polarization preserving projection screen, whereas wavelength multiplexing stereoscopy can be used with any standard front or rear projection screen.…”

Section: Three‐dimensional Displaysmentioning

confidence: 99%

Projection displays: New technologies, challenges, and applications

Maximus

2015

J Soc Info Display

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-The achievable color gamut and light output of projection displays based on light-emitting diodes (LEDs), phosphor conversion, and lasers are discussed. The color appearance phenomena, colorfulness, and the Helmholtz-Kohlrausch effect are discussed in the context of LED and laser illumination of projection displays, as well as some pitfalls concerning the interpretation of the HelmholtzKohlrausch effect. Also the laser speckle phenomenon and the characterization of it are addressed. The importance of both the American National Standards Institute (ANSI) contrast and the sequential contrast of projectors, as well as the discrepancy between measured and perceived contrasts, are explained. Visibility criteria for contouring artifacts are explained and compared with new emerging electro-optical transfer functions that are more adapted to this issue. Stereoscopic solutions and early prototypes of autostereoscopic multi-view, super multi-view projection displays, and electroholographic displays are discussed as well as the limiting factors of these systems in the context of display resolution, and LED and laser light sources.

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Section: Three‐dimensional Displaysmentioning

confidence: 99%

Projection displays: New technologies, challenges, and applications

Maximus

2015

J Soc Info Display

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“…One application of a temporal-interlacing S3D projector employs wavelength multiplexing. It uses optical filters that have three narrow bands that, respectively, transmit red, green, and blue lights [18]. The transmission bands are slightly shifted for the left-and right-eye views, which make the two filters mutually exclusive.…”

Section: Color Interlacingmentioning

confidence: 99%

An overview of depth distortion in stereoscopic 3D displays

Kim

2015

Journal of Information Display

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This article reviews how different presentation techniques of stereoscopic 3D (S3D) TVs affect depth perception. Many S3D TVs employ various interlacing techniques to present two eye views using one screen. The spatial or temporal interocular offsets introduced by these interlacing techniques can affect the image's perceived depth, resulting in depth distortion. Temporal interlacing delivers the two eye views with an interocular delay, which can be interpreted by the visual system as a horizontal disparity. Spatial interlacing presents the two eye views in alternating fashion on every other pixel row, thereby creating a vertical interocular offset, which can induce an additional horizontal disparity while the visual system performs binocular matching. Recently, novel S3D presentation techniques were introduced to improve depth perception. Spatiotemporal hybrid interlacing combines spatial interlacing and temporal interlacing: it presents the two eye views as spatial interlacing does, but each pixel row switches between the two views overtime. This hybrid technique has been proven to be free from depth distortion. By contrast, color interlacing presents the two eye views with an interocular delay, but the sign of the delay differs among the color channels. Such a configuration effectively decreases the interocular delay and improves the depth perception.

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“…Nevertheless, glasses free 3D displays based on color separation could be the next step to a more natural stereoscopic viewing experience. Like at the INFITEC® system, sharp‐bordered spectra are a necessity.…”

Section: Introductionmentioning

confidence: 99%

Quantum dot materials for improved autostereoscopic color filter display designs

2018

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In previous publications, we investigated and discussed wavelength selective autostereoscopic 3D arrangements, consisting of common LCD and RGB-color filter barriers. We determined computed advantages of wavelength selective barriers compared with conventional barriers like lenticular and parallax barriers. An experimental demonstration showed no satisfactory results using commercial displays. The broad band wavelength spectra of backlights and filter technology resulted in high crosstalk and undesirable moiré effects. Nowadays, LCDs with quantum dot materials have come into the market and compete with OLED by improved color depth and High Dynamic Range. In this paper, we describe how to improve the characteristics of autostereoscopic displays by using quantum dot materials and show the benefits of this technology in combination with novel color filter designs. FIGURE 1 -Top view, a schematic representation of the 3D display design (D> > a) with rays originating from the sub-pixels of a pixel row, in front; visible pattern on the color barrier with subpixel gaps s > 0 and a section of the 3D display. Journal of the SID 26/9, 2018 535 FIGURE 16 -ASD with LC-valve steered QLED subpixels (a) for an UV-backlight and (b) for a blue backlight.FIGURE 17 -Electrically switchable RGB-QD integrated color filter-based ASD design. Journal of the SID 26/9, 2018 543

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Advanced stereo projection using interference filters

Cited by 20 publications

References 6 publications

Projection displays: New technologies, challenges, and applications

Projection displays: New technologies, challenges, and applications

An overview of depth distortion in stereoscopic 3D displays

Quantum dot materials for improved autostereoscopic color filter display designs

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