The human eye requires a change in accommodation between the displayed image and the road even if the displayed image is in the line of sight. The mismatch between the focal distance of the displayed image and the real objects has adverse consequences. In contrast to the aircraft HUDs, automotive HUDs show the ghost image focused at a short distance from the windshield.
New advances have been in HUDs, including colored images, matrices, retractable reflectors. This HUD consisted of a monochromatic segment display reflected on the windshield. The first in-vehicle HUDs was developed in the Oldsmobile Cutlass Supreme by General Motors in 1988. However, current high-tech aircraft HUDs are unable to produce a simultaneous multifocal projection, and mostly they are focused at a long distance. Further advanced in HUDs included variable focal distance of the projected reticle and a gyroscope. The reticle is projected at the infinite, where it remains fixed at distant targets regardless of the position of the viewer. A semi-transparent window allows the transmitted light from a real sight to be combined with a projected image that appears as a ghost image. The major characteristics of aircraft HUDs were derived from the reflector sight reticle predecessor. The original HUDs emerged as an advancement to the reflector sight that were capable of projecting a reticle at the infinite. HUDs were first utilized in fighter aircrafts after World War II. Automotive HUDs have been developed as a safer alternative to touch control infotainment systems to reduce the sight shift from the road. Human error was a major contributing factor in 94% of the crashes. Introductionġ.25 million fatal car accidents occurred on roads worldwide in 2017. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. 3D holograms were observed floating as a ghost image at a variable focal distance with a digital Fresnel lens into the CGH and a concave lens. By decreasing the focal distance of the CGHs, the zero-order spot was diffused into the holographic replay field image. The reconstructions were obtained with a HeNe laser and a UHD spatial light modulator with a panel resolution of 3840×2160 px for replay field projections. The LiDAR data was collected with a 3D terrestrial laser scanner and was converted to computer-generated holograms (CGHs). Note: Author names will be searched in the keywords field, also, but that may find papers where the person is mentioned, rather than papers they authored.Ī holographic automotive head-up display was developed to project 2D and 3D ultra-high definition (UHD) images using LiDAR data in the driver’s field of view.Use a comma to separate multiple people: J Smith, RL Jones, Macarthur.Use these formats for best results: Smith or J Smith.
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