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Patent

Image combining system for eyeglasses and face masks

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TLDR
An optical system combines a first image formed by a main lens (300) with a second image provided by an electronic display, slide, or other image source (320) as mentioned in this paper.
Abstract
An optical system combines a first image formed by a main lens (300) with a second image provided by an electronic display, slide, or other image source (320) The image combining system includes one or more inserts such as a set of reflecting image combiners to redirect light on an optical pathway within the main lens to the user's eye The image combining system is highly compact, allowing the integration of a display system with eyeglasses or a face mask, such as a diver's mask A number of implementations of the optical system make possible other types of image integration including uses in image acquisition systems such as cameras

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Patent

Eyeglass interface system

TL;DR: In this article, an eyeglass interface system is provided which integrates interface systems within eyewear, such as a display assembly and one or more audio and/or video assemblies mounted to an eyewlass frame.
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References
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Patent

Interactive aircraft training system and method

David R. Baum
TL;DR: In this paper, a system for detecting and tracking head orientation and head movement of an individual is presented, which includes a computer (20), a detector (40), a pair of tactile gloves (42, 44), a stereoscopic, head-mounted display (31, 33, 40, 42, 43, 44, 48), and a microphone (48).
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Head mounted display for miniature video display system

TL;DR: In this article, a head mounted display for presentation of video information includes a virtual raster display unit, an attachment mechanism for attaching the display unit to the head of the user, a support member connected to the attachment mechanism, and a remote signal source for providing power, timing, control signals and display information.
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TL;DR: In this article, a visual display system is described which utilizes one and/or two-dimensional arrays of visible emitting vertical-cavity surface-emitting lasers (VCSELs) in order to provide a desired visual display within an observer's field of view.
Patent

Portable computer and head mounted display

TL;DR: A portable or "lap-top" computer includes an associated head mounted display as mentioned in this paper, which can be either opaque or light transmitting, and can be hinge mounted to the glasses frame so that they can be swung up and out of the field of vision of the user.
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Display system for a head mounted viewing transparency

TL;DR: In this article, a display system for conventional eyewear having a transparency that defines a field of view and a frame for supporting the transparency on a user's head is shown.