Design Methods For A Holographic Head-Up Display Curved Combiner

Fisher, Richard L.

doi:10.1117/12.7977010

Cited by 9 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A spherical-surface HOE was designed to operate as a Fourier lens without aberration. As an early application, curved HOEs were used to design HUDs for aircraft pilots [44].…”

Section: Previous Research On Curved Hoesmentioning

confidence: 99%

Curved holographic optical elements and applications for curved see-through displays

Bang

Jang

Lee

2019

Journal of Information Display

View full text Add to dashboard Cite

Holographic optical elements (HOEs) have been used as important tools for implementing augmented reality (AR) and see-through displays because they are transparent and thin. Moreover, as HOEs usually come in the shape of a thin film, they can be bent, used for coating, or attached to curved surfaces. While they can be used to implement curved AR displays, however, the applications of the curved HOE have not been sufficiently studied. In this paper, an analysis method for curved/bent HOEs using the coupled-wave theory and the numerical ray tracing method is introduced. Using this method, the influence of the surface curvature on the optical characteristics of HOEs, including the aberration and diffraction efficiency, was analyzed. Also presented herein is a method of designing the optimal curvature that can reduce the aberration. Curved HOEs can be applied to see-through displays such as head-mounted displays (HMDs), head-up displays (HUDs), or transparent screens. They can be used to expand the field of view (FOV) and to reduce the form factor. The proposed analysis method provides a useful guideline for designing practical curved see-through displays.

show abstract

“…A spherical-surface HOE was designed to operate as a Fourier lens without aberration. As an early application, curved HOEs were used to design HUDs for aircraft pilots [44].…”

Section: Previous Research On Curved Hoesmentioning

confidence: 99%

Curved holographic optical elements and applications for curved see-through displays

Bang

Jang

Lee

2019

Journal of Information Display

View full text Add to dashboard Cite

show abstract

“…Recent calls for increased field of view (FOV), brightness, and diffraction efficiency have challenged designers and led to designs that use new image sources and holographic technology [4][5][6]. While the cathode ray tube (CRT) performs well in traditional HUD systems, its limitations in size, weight, resolution, luminance, and reliability are fatal [7].…”

Section: Introductionmentioning

confidence: 99%

Design and fabrication of a holographic head-up display with asymmetric field of view

et al. 2014

View full text Add to dashboard Cite

It is difficult to design and fabricate a head-up display (HUD) with a large asymmetric field of view (FOV) while maintaining a good image quality. In this paper, we design and develop such a holographic HUD system. To improve luminance and enhance the environmental adaptability of the HUD, we use a liquid crystal display with high brightness as well as a holographic reflection element. The vertical FOV is tilted to an angle of -7°, which is consistent with the actual view of the pilot. The decentration and tilt of the optical relay system effectively compensate for the distortion and off-axis aberration due to the asymmetric FOV and tilted, curved combiner. The transition plates used in the mechanical structure significantly decrease the difficulty in fabrication and alignment, and virtual prototyping greatly reduces the risk and shortens the development cycle. Experimental results demonstrate that this prototype achieves a total FOV of 30° (horizontal) ×24° (vertical), a resolution of 1280×1024, and a 5% distortion.

show abstract

“…Conventional head-up display configurations for aircraft and vehicles are implemented by means of geometrical optical designs. In such a design, a head-up display system can be basically decomposed into two parts: one is the virtual image projector and the other is a transparent optical device called a combiner [7], which is positioned in the line of sight of the pilot or driver. The virtual image projector generates the required and important information for drivers in a magnified virtual image, and simultaneously the combiner directs the wavefront of this virtual image to the eyes of observers.…”

Section: Introductionmentioning

confidence: 99%